WorldCat Identities

Qiao, Pizhong

Overview
Works: 37 works in 43 publications in 1 language and 741 library holdings
Genres: Academic theses 
Roles: Author, Other, Thesis advisor
Classifications: TG325.6, 624.283
Publication Timeline
.
Most widely held works by Pizhong Qiao
FRP deck and steel girder bridge systems : analysis and design by Julio F Davalos( )

3 editions published in 2013 in English and held by 611 WorldCat member libraries worldwide

"This book presents the analysis and design of fiber-reinforced polymer (FRP) decks, which have been increasingly implemented in rehabilitation projects and new construction due to their reduced weight, lower maintenance costs, and enhanced durability and service life. The book is organized into three complementary parts, covering FRP decks, shear connectors between the deck and steel girders, and the behavior of bridge systems. It outlines analysis and design guidelines for each specific deck type, which can be broadly classified according to their production process as sandwich panels and adhesively bonded cellular sections, produced mainly by pultrusion"--
An over-height collision protection system of sandwich polymer composites integrated with remote monitoring for concrete bridge girders( Book )

3 editions published in 2008 in English and held by 14 WorldCat member libraries worldwide

One of the common damages in existing highway bridges is the damage at the bottom corners or edges of the reinforced concrete beams or box girders induced by an impact of trucks exceeding the allowable height clearance of the bridges. In this study, a collision protection and scarifying system is developed, and it utilizes advanced materials/structures to protect highway bridge girders. The proposed collision protection and scarifying system is in a new "I-Lam" (Impact Laminate) configuration and bolted and/or bonded to the bottom portions or edges of concrete girders. The I-Lam panels are made of a composite sandwich construction with multi-layer aluminum honeycomb core and top and bottom thin face sheets, and they are developed/designed specifically for impact damage protection of bridge girders (e.g., concrete girders). Design criteria and guideline for I-Lam are developed, and the analysis, optimal design, and quality control tests of the collision protection system are conducted. Smart piezoelectric sensors are integrated with the I-Lam panels for monitoring the performance of the collision protection system. The collision protection system is implemented in an identified bridge. The developed smart bilayer honeycomb I-Lam sandwich is capable of reducing the transferred contact force dramatically, absorbing/mitigating impact energy, protecting the underneath concrete structures by system scarifying and core crushing, and monitoring the impact incident with smart piezoelectric sensors, and it is applicable to protecting other structures (e.g., steel girders, columns) from accidental vehicle impact in the highways
Effect of intermediate diaphragms to prestressed concrete bridge girders in over-height truck impacts by Pizhong Qiao( )

2 editions published in 2008 in English and held by 11 WorldCat member libraries worldwide

Mitigation strategies for early-age shrinkage cracking in bridge decks by Pizhong Qiao( )

1 edition published in 2010 in English and held by 8 WorldCat member libraries worldwide

Early-age shrinkage cracking has been observed in many concrete bridge decks in Washington State and elsewhere around the U.S. The cracking increases the effects of freeze-thaw damage, spalling, and corrosion of steel reinforcement, thus resulting in premature deterioration and structural deficiency of the bridges. In this study, the main causes of the early-age cracking in the decks are identified, and concrete mix designs as a strategy to prevent or minimize the shrinkage cracking are evaluated. Different sources (eastern and western Washington) and sizes of aggregates are considered, and the effects of paste content, cementitious materials (cement, fly ash, silica fume, slag), and shrinkage reducing admixture (SRA) are evaluated. A series of fresh, mechanical and shrinkage property tests were performed for each concrete mix. The outcomes of this study identify optimum concrete mix designs as appropriate mitigation strategies to reduce or eliminate early-age shrinkage cracking and thus help minimize shrinkage cracking in the concrete bridge decks, potentially leading to longer service life
Concrete performance using low-degradation aggregates by Pizhong Qiao( )

1 edition published in 2012 in English and held by 6 WorldCat member libraries worldwide

Effect of intermediate diaphragms to prestressed concrete bridge girders in over-height truck impacts : final report by Pizhong Qiao( Book )

1 edition published in 2008 in English and held by 6 WorldCat member libraries worldwide

Active Lamb wave propagation-based damage identification in plate-like structures by Zijian Wang( )

1 edition published in 2015 in English and held by 5 WorldCat member libraries worldwide

In this study, the improved active Lamb wave propagation-based damage identification methods are developed for metallic and composite laminated plates. Existing studies are first reviewed followed by a comprehensive study. Second, a damping boundary is developed in both the numerical finite element modeling and experimental implementation to absorb the Lamb wave reflection at plate edges. Based on the purified wave field, the Lamb wave propagation can be accurately characterized and easily interpreted, through different time frequency spectral analysis methods. Third, a signal denoising method based on the soft-thresholding of decomposed Lamb wave components is presented. By applying two representative signal decomposition methods, the signal of interest is decomposed into a series of components with different frequencies, and the noise is alleviated by restricting the energy of high-frequency components. The results show that the denoised signals present damage related wave features more distinctively and improve the damage identification accuracy. Fourth, an enhanced single transmitter and multi-receiver (ESTMR) array is proposed. Structural responses collected by various sensing points in ESTMR are shifted and summed to generate a time-velocity spectrum where the forward and backward waves can be extracted. Since the first backward wave indicates the reflection from damage, the damage can be located by multiplying the corresponding Lamb wave group velocity with the time-of-flight. Three baseline-free quantification parameters using the pixel values of the reconstructed damage image manifest a convincing improvement of ESTMR over the classic single transmitter and multi-receiver array. Finally, a new damage identification method considering hybrid wave components is proposed to monitor small-sized non-penetrating damages, and a damage index is developed by windowing the Hilbert-Huang spectrum. The numerical and experimental results demonstrate that the hybrid wave components-based damage identification method has higher damage sensitivity and noise immunity than the one based on the single wave component. In summary, different improved methods of damping boundary, signal denoising, enhanced sensor array, and hybrid wave components are presented for active Lamb wave propagation-based damage identification of plate-like structures, and they contribute to better detecting damage in structures and promoting the wave propagation-based methods in real time structural health monitoring
Best practices of using shotcrete for wall fascia and slope stabilization (phase I study) by Pizhong Qiao( )

1 edition published in 2017 in English and held by 5 WorldCat member libraries worldwide

Interface mechanics of layered composite beam-type structures by Fangliang Chen( )

1 edition published in 2011 in English and held by 5 WorldCat member libraries worldwide

In this study, improved analytical models are developed to characterize interface behavior of layered composite beam-type structures. The mechanics models of the bonded interface with and without adhesive layer are established, from which the interface fracture, delamination buckling, free vibration and stress analysis across the adhesive layer of corresponding interface are studied. By modeling an interface cracked bi-layer composite beam as two Timoshenko's sub-beams, elegantly simple but theoretically rigorous methods for computing the interface stresses and interface crack tip deformations are summarized, from which the distinguished levels of accuracy from different joint models in capturing the crack tip deformations are illustrated. Based on the flexible joint model, closed-form solutions of energy release rate (ERR) of four-point bending fracture specimens are first provided,and the experiment of wood-FRP bond interfaces under mode-II and mixed mode fracture is evaluated. An improved one-dimensional (1-D) analytical model is then developed to analyze the buckling behavior of a delaminated bi-layer composite beam-column. By accounting for the global deformations of the intact region, the present model is capable of capturing the buckling mode shape transitions from global, to global-local coexistent, and to local buckling for asymmetric delamination buckling as the interface delamination increases. An improved vibration analysis is further developed to evaluate the free vibration behavior of delaminated bi-layer composite beams. Besides including the delamination tip deformations, the contact and friction effects between the delaminated sub-layers are accounted for by employing the piecewise linear spring model and the linear bridging model. Frequencies and mode shapes are then solved through a boundary eigen-value problem. An improved adhesively-bonded joint model is finally proposed to study the interface stress distributions in the plated beams with moderately-thick adhesive layer. Both the shear and normal stresses along different adherend-adhesive interfaces are assumed to be different, and the adhesive layer is modeled as a simplified 2-D elastic continuum, from which the closed-form expressions of interface stresses are then obtained. The improvement of the proposed model over other existing theoretical models is demonstrated by disclosing the shear and normal stress variations across the adhesive thickness direction
Developing connections for longitudinal joints between deck bulb tees - development of UHPC mixes with local materials by Pizhong Qiao( )

1 edition published in 2016 in English and held by 5 WorldCat member libraries worldwide

Health monitoring and damage identification of composite structures by Wei Fan( )

1 edition published in 2011 in English and held by 5 WorldCat member libraries worldwide

Structural health monitoring and damage identification method for composite beams and plate-type structures were studied in this dissertation, especially for fiber-reinforced plastic (FRP) sandwich beams and deck panels. A literature review showed that research on 2-D damage identification method for plate-type structure is relatively limited. Two vibration-based methods were presented for damage identification of plate-type of structure. First, the 2-D continuous wavelet transform (CWT)-based method was proposed for damage localization. Then, a strain energy-based Damage Severity Correction Factor (DSCF) method was proposed for damage localization and quantification. In this method, a damage location factor matrix and a damage severity correction factor matrix could be generated from the curvature mode shape of a plate and then be used for damage localization and quantification. A structural health monitoring strategy was proposed for FRP sandwich panels using the combination of experimental modal testing technique and damage identification method. Using this strategy, the two proposed methods were applied to an as-manufactured FRP sandwich deck panel for damage identification. The 2-D CWT-based strategy used an accelerometer and an impact hammer modal testing system, while the DSCF-based strategy adopted a polyvinylidence fluoride (PVDF) sensor network and an impact hammer system. The application of 2-D CWT method on mode shape data from experimental modal analysis showed that it could effectively indicate the location and area of damage in a FRP sandwich plate-type structure. The application of DSCF-based damage identification method on curvature mode shape data from the FE/experimental modal analysis shows that it could not only effectively indicate the location of damage but also approximate the damage severity in a FRP sandwich plate-type structure. The free vibration of cantilevered sinusoidal core sandwich beams was investigated based on a high-order sandwich beam theory. The results were compared with Timoshenko's beam theory, numerical simulation and experimental test results to illustrate the improvement of the high-order approach. The temperature effect on dynamic response of FRP sandwich beams/panels was also studied for condition assessment. A series of FRP sandwich beams and an as-manufactured FRP sandwich panel were investigated for dynamic response change under temperature effect based on the material data obtained from dynamic mechanical analysis
Explicit buckling analysis of fiber-reinforced plastic structural shapes by Xuping Huo( )

1 edition published in 2011 in English and held by 5 WorldCat member libraries worldwide

In this dissertation, the comprehensive explicit local, distortional, and global (flexural-torsional) buckling analyses of fiber-reinforced plastic (FRP) structural shapes are presented. Based on the energy method, the explicit formulas for local, distortional, and flexural-torsional buckling of thin-walled FRP beams under transverse loading are derived. The eigenvalue problems are established based on the total potential energy function and considering the boundary and loading conditions, of which the buckled shape functions are treated as admissible shape functions for either intended rectangular plates or FRP beams. The buckling analysis of both rotationally- and vertically-restrained orthotropic composite plates subjected to uniform compression is first conducted to obtain the explicit solutions. The explicit formulas for the local buckling loads of rotationally-restrained orthotropic plates subjected to various in-plane loads under generic boundary conditions are also obtained. Using the discrete plate analysis technique, the closed-form explicit solution for the critical buckling of restrained plate components under the combined in-plane shear and in-plane bending is applied to the web local buckling analysis of several common FRP structural shapes (i.e., Box-, I-, C-, Z-, T-, and L-section beams) under transverse loading. Based on the energy method and generic displacement shape function, the closed-form explicit solution for the flexural-torsional buckling of thin-walled open section beams is proposed, and it is applicable to eight different beam end boundary conditions by adjusting the spring stiffness. The explicit method is also capable of dealing with different loading cases by calculating the corresponding stress resultants acting on the plate components of the beams. Simple procedures to construct the displacement field of the I-section beams in distortional buckling mode are proposed. Taking advantage of the kinematic assumptions of each plate component, the order of the eigenvalue problem is significantly reduced. The explicit formulas for distortional buckling of double symmetric and monosymmetric FRP I-section beams are developed. To verify the explicit solutions for the stability of FRP structural shapes, the numerical finite element analyses are conducted, and reasonable agreements between the explicit and numerical solutions are obtained, thus validating the accuracy of the proposed approximate explicitness of formulas for buckling analyses of composite structures. The theoretical methods and admissible shape functions presented are useful for deriving effective explicit solutions for relatively complex problem of structural stability; while the explicit solutions proposed in this study for local, distortional, and flexural-torsional buckling analysis of thin-walled FRP structures can facilitate design, analysis and optimization of existing and new composite structures and assist the preliminary design in practical analysis
Nonlinear material behavior and fatigue-accumulated damage of wood plastic composites by Derek A Brosious( )

1 edition published in 2008 in English and held by 4 WorldCat member libraries worldwide

Wood-plastic composites (WPC) are quickly growing as useful materials in the development of structural elements by combining some of the advantages of both wood and plastic. However, their structural use has been somewhat limited due to a lack of knowledge concerning the mechanical behavior of WPC, most notably the stress-strain nonlinearity and the lack of design predictability due to damage accumulation. This paper attempts to address and mitigate these two limitations. The stress-strain behaviors of several formulations of WPC were evaluated in quasi-static tension and flexure under various strain rates, where highly nonlinear performance was observed. A nonlinear hyperbolic tangent constitutive relation was used for stress-strain and force-displacement analysis in an attempt to model the behavior of coupled wood-polypropylene in axial members and in flexural members. It was found that the hyperbolic tangent function is an excellent tool for describing nonlinear stressstrain behavior in tension and flexure, and deflections of structural members in both loading modes can be predicted quite successfully. Through this process, it was also discovered that the strain rate, or rate of applied load, had a notable effect on material properties. Increases in stiffness and ultimate strength were observed for increased load rates, and the nonlinearity of stress-strain relation reduced as the load rate increased. An analytical model using energy method was proposed to predict the nonlinear loaddeformation history of structural components. A stress-cycle to failure (S-N) curve was developed for a coupled woodpolypropylene by fatiguing flexural samples to failure. The fatigue data indicated that the formulation behaved extremely well at lower stress ratios, although the data was somewhat erratically dispersed. Based on these findings, coupons were conditioned to varying fractions of ultimate failure cycles and then tested in quasi-static flexure to measure reduced stiffness and in dynamic mechanical analysis (DMA) to measure reduced storage modulus. Two cumulative damage models were proposed using random distributions and two-parameter Weibull distributions of the measured fatigue data. Damage parameters were proposed based on cumulative probability density functions, and they were applied in the context of Continuum Damage Mechanics (CDM) to predict reduced stiffness and reduced storage modulus. The Weibull distribution provided good comparisons with test data, but further investigations are recommended. The present study sheds light on nonlinear material behavior of WPCs under quasi-static loading and accumulated damage under fatigue and provides related prediction models for such phenomena
Local Buckling Analysis of Composite Corrugated and Honeycomb Structures by Sachinthani Thilinika Pathirana( )

1 edition published in 2020 in English and held by 4 WorldCat member libraries worldwide

This dissertation aims to investigate local buckling instability of composite corrugated and honeycomb core structures subjected to various loading conditions (e.g., axial compression, in-plane shear, and combined loading). Using classical shell theory, Rayleigh-Ritz method and a representative periodic element that encapsulates the repetitive buckling nature of the panel, semi-analytical solutions for the local buckling of composite corrugated sinusoidal panels, subjected to uniaxial compression, in-plane shear, and combined compression and in-plane shear, are developed. The generalized eigenvalue problems are established based on the first variation of the total potential energy and by modeling the buckling mode shapes with suitable displacement functions, which satisfy the periodic, simply-supported and rotationally-restrained boundary conditions. The curvilinear honeycomb core is discretized to individual corrugated elements; hence, the buckling solution of sinusoidally-corrugated elements serves as a lower bound one to the local buckling of sinusoidal honeycomb core walls. The buckling of prismatic honeycomb cores is also studied by modeling the flat core walls as discrete plate elements and developing an analytical expression for the rotational restraint stiffness at the intersection of core walls. Excellent correlations are observed between the present theoretical predictions and the numerical finite element analysis results. Parametric studies exploring the effects of the thickness, aspect ratio, corrugated amplitude, and material properties of the structure on buckling show that the developed solutions accurately capture the local buckling behavior at a greater extent of these parameters within the range of thin-walled shells. User-friendly equations to predict the critical local buckling of sinusoidal panels under axial compression and in-plane shear are obtained. The relationship of local buckling loads between compression and in-plane shear when applied simultaneously to a sinusoidally-corrugated structure is described through a fitted equation. The local buckling analysis of prismatic honeycomb core walls shows satisfactory comparison with the finite element results for the three honeycomb core geometries considered (i.e., hexagonal, rectangular and triangular). The recommended buckling solutions can be used in confidence to better comprehend the complex local buckling behaviors of these highly advantageous structures subjected to various loading as well as to improve and optimize design efficiency of corrugated and honeycomb composite structures
Impact identification on concrete panels using a surface-bonded smart piezoelectric module (SPM) system by Ayumi Kalpana Manawadu( )

1 edition published in 2019 in English and held by 4 WorldCat member libraries worldwide

This study investigates the effectiveness of using a surface-bonded smart piezoelectric module (SPM) system to determine the impact location, impact force, and projectile properties (mass and velocity) of low-velocity impacts on concrete panels. Further, the study investigates the experimental relationship between the impact force/energy and the amplitude/energy of the propagating waves. The impact source localization algorithm was effective, with a maximum error of 6.4%, and numerical simulation was used to verify the experimental results. A drop weight test with varying masses and varying heights were conducted to determine the projectile properties at the impact point. A special SPM was introduced to determine the contact force at the impact location. The maximum force and contact duration values were in good agreement with Reed's contact model. A simplified formula was derived to obtain the mass of the projectile when the impact velocity is known, and to determine the impact velocity when the mass of the projectile is known, using an SPM located at the impact location. Finally, a relationship between the impact force/energy with the amplitude/energy from the distributed SPM system was established experimentally
Performance of recycled aggregate concrete with atomic polymer technology by Nicolas Lopez( )

1 edition published in 2012 in English and held by 4 WorldCat member libraries worldwide

Many concrete constructions have reached the end of their service life or have been damaged by natural disasters and will create a great amount of waste concrete at a future date. At the same time, societies around the world continue to consume a large amount of natural aggregate. To reduce the environmental impact of this impending force, a need has arisen to develop a use for recycled aggregate (RA) and to develop a recycled aggregate concrete (RAC) with enhanced performance. Recycled aggregates from waste concrete have been used as filler in road construction and in low-level applications due to material deficiencies such as large water absorption capacity and irregular shapes, which influence the workability of concrete. This study evaluates the performance of RAC with atomic polymer technology (APT). It considers different degrees of APT and performs a series of concrete shrinkage, mechanical property, and dynamic tests. A wave propagation test, also performed, uses embedded smart piezoelectric sensors and actuators. The outcomes of this study identify the effect of APT on RAC properties, promote the widespread application of recycled concrete in engineering, improve the sustainability of RAC structures, and provide viable long-term health monitoring techniques for RAC structures
Development, Characterization and Modeling of Ultra-high Performance Concrete (UHPC) with Locally Available Materials by Zhidong Zhou( )

1 edition published in 2018 in English and held by 4 WorldCat member libraries worldwide

Ultra-high performance concrete (UHPC) is a new generation of advanced cementitious materials with superior mechanical properties that far surpass conventional concrete. However, UHPC is expensive and proprietary, and only a few field producers are available commercially in the United States. Moreover, its tensile behavior has not been well understood. This research aims to develop, characterize and model UHPC, specifically for its tensile behavior. Two viable UHPC mixes produced with locally available materials are developed, and they exhibit comparable mechanical properties to those of commercial products. An effective specimen for direct tension test (DTT) is designed and then used to evaluate both the short- and long-term tensile behavior of UHPC. The extended freeze-thaw actions have obvious impact on the tensile responses of UHPC, particularly over the post-cracking period, and the energy-based evaluation approach from DTT is more critical than the modulus-based approach to screen and evaluate material deterioration over freeze-thaw period. An analytical model is proposed to predict the tensile responses of UHPC from the bridging behavior of matrix and fibers. A fiber reinforcement efficiency function is derived to characterize the combined effects of fiber orientation, fiber snubbing and matrix spalling on the tensile behavior of UHPC. The fiber geometry and volume fraction, interfacial bond strength, and fiber reinforcement efficiency pronouncedly govern the tensile strength and hardening behavior of UHPC. The prediction capability of the analytical model is greatly improved by adjusting some coefficients that govern the hardening and softening branches of tensile stress-crack width curves. This model can effectively predict the tensile behavior of UHPC and its deterioration effect due to freeze-thaw actions. The non-contacted lap-splice pullout test is conducted to investigate the bond behavior of rebar in UHPC. The adopted analytical model can predict the bond stress-slip relation accurately. The critical embedment length and bond strength of rebar in UHPC mixes are recommended for bridge deck connection design. The comprehensive study on the tensile behavior of UHPC presented sheds light on better understanding UHPC performance in tension and provides both the experimental and analytical methods to effectively evaluate its tensile behavior
Buckling analysis of sinusoidal corrugated panels in compression by Sachinthani Thilinika Pathirana( )

1 edition published in 2018 in English and held by 4 WorldCat member libraries worldwide

This thesis aims to investigate the critical local buckling of simply supported sinusoidal panels subjected to uniaxial compression using the Rayleigh-Ritz method. Being increasingly and innovatively used in many applications, these corrugated panels are especially popular due to their high stiffness to weight ratio and increased out-of-plane rigidities. Failure of such thin-walled panels occurs mainly in buckling rather than material failure. Conventional analytical methods are limited when analyzing these panels in local buckling because of its unique geometries. Hence, a semi-analytical solution is developed to predict the local buckling based on classical shell theory with a unit cell approach, and it shows excellent correlation with the results based on the numerical finite element analysis. Parametric studies are conducted to explore the effects of the thickness, aspect ratio, and corrugated amplitude of the panel on buckling. The results show that the local buckling can be accurately captured at high thickness/radius of curvature ratios, any aspect ratios, and high corrugated amplitudes. The proposed semi-analytical solution can be confidently used to aid in the efficient and accurate design analysis and optimization of corrugated panels
Vibration based damage identification for plate-like structures by Hussam Saleem( )

1 edition published in 2011 in English and held by 4 WorldCat member libraries worldwide

A structural health monitoring system that is able to detect and identify any damage in real time is essential to maintain the structural integrity and safety and to maximize the life span of the structure as much as possible. The objective of this study is to develop and improve the techniques used in structural health monitoring based on the dynamic properties of a plate structure. An E-glass/polyester plate was extensively tested in the healthy state as well as three damage cases. Polyvinylidene fluoride (PVDF) sensors with PZT actuator (PZT-PVDF) as a main system was used for acquiring the modal parameters experimentally. The HammerAccelerometer system was also considered. Moreover, the finite element (FE) was used to model the plate and implement the modal analysis. The curvature in the longitudinal direction ([kappa]x), in the transverse direction ([kappa]y), and the twist curvature ([kappa]xy) were measured using the PZTPVDF system. Displacement was measured using the Hammer-Accelerometer system. The curvature measurements exhibited more sensitivity to damage than the displacement. On the other hand, using the PVDF-PZT system to measure the curvature is more susceptible to noise than the Hammer-Accelerometer system, which means that there is a trade-off between the sensitivity to damage and sensitivity to noise for the two systems. Ultimately, the results showed the superiority of the PVDF-PZT system. Three damage detection algorithms were tested including the gapped smoothing method (GSM), the generalized fractal dimension (GFD) method and strain energy method (SEM). Five modes of vibration were selected for analysis; modes one through five in the FE, and modes three through seven in the experiment. Based on the curvature mode shapes, GSM and GFD performed better than SEM with GSM being superior above all in terms of damage detection, localization and sensor spacing effect. The use of the curvature in separate directions was investigated; the results concluded that using the curvature in the y-direction solely succeeded in detecting the first and second damage cases, and using the twist curvature detected the third damage case. Based on the displacement mode shapes, GSM performed best while GFD performed poorly in detecting the damage
Evaluation of concrete mix designs to mitigate early-age shrinkage cracking in bridge decks by Jianmin Zhuang( )

1 edition published in 2009 in English and held by 4 WorldCat member libraries worldwide

Early-age shrinkage cracking has been observed in many concrete bridge decks in Washington State and elsewhere around the U.S. The cracking increases the effects of freezethaw damage, spalling, and corrosion of steel reinforcement, thus resulting in premature deterioration and structural deficiency of the bridges. In this study, the main causes of the earlyage cracking in the decks are identified, and concrete mix designs as a strategy to prevent or minimize the shrinkage cracking are evaluated. Different sources (Eastern and Western Washington) and sizes of aggregates are considered, and the effects of paste content, cementitious materials (cement, fly ash, silica fume, slag), and shrinkage reducing admixture (SRA) are evaluated. A series of concrete shrinkage and mechanical property tests are performed. The outcomes of this study identify optimum concrete mix designs as appropriate mitigation strategies to reduce or eliminate early-age shrinkage cracking and thus help minimize shrinkage-associated cracking in the concrete bridge decks, potentially leading to a great deduction in bridge deck maintenance costs
 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  General Special  
Audience level: 0.00 (from 0.00 for FRP deck a ... to 0.00 for FRP deck a ...)

FRP deck and steel girder bridge systems : analysis and design
Covers
Alternative Names
Chiao, Pizhong

Pizhong Qiao.

Languages
English (25)