WorldCat Identities

Martin, L. A.

Overview
Works: 389 works in 905 publications in 2 languages and 2,124 library holdings
Genres: Bibliography  Folklore  Records and correspondence  Biography  Juvenile works  History 
Roles: Author, Editor, Other, Recipient, Author of introduction, Publishing director, Annotator, Former owner, Speaker, Contributor
Classifications: PJ7721, 531
Publication Timeline
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Most widely held works by L. A Martin
Field-expedient shotcrete adhesion test system( )

1 edition published in 2011 in English and held by 235 WorldCat member libraries worldwide

"Objective: To develop a practical method of measuring shotcrete adhesion strength in underground mines. A more thorough understanding of the in-situ strength properties of shotcrete, particularly the bond strength of shotcrete to the rock, will lead to improvements in ground support practices, thereby preventing ground falls and reducing mine roof-fall incidents. Background: When shotcrete is used as an integral part of a mine's ground support system, it is important to know the strength properties of the in-place shotcrete. To quantify the bond strength of the shotcrete to the rock, a shotcrete adhesion test system has been developed for use in underground mines. The test system consists of readily available components, primarily a small stand-mounted core drill and a pulling unit equipped with a precision pressure gauge. All of these components are rugged and portable, and they can reliably be used to measure the adhesion strength of shotcrete app lied to the surface of an underground mine opening. With this test method, a direct tensile load is applied to a core drilled through the shotcrete into the underlying rock. As this load is gradually increased, the test core typically breaks or fails in tension. This tensile failure can occur in the shotcrete, at the bond surface (interface), in the rock, or at some combination of these locations. As a result, the tensile-strength values derived from these tests provide important information about the quality of the applied shotcrete and the competency of the underlying rock, as well as the bond strength of the shotcrete to the rock. Conducting the Shotcrete Adhesion Test: Once a desired test site has been selected, a hand-operated rotary percussive drill is used to drill a 16-mm x 51-mm (0.625- in x 2-in) hole for anchoring the drill stand. After installing a 13-mm- (0.5-in- ) diameter threaded stud and expansion anchor in this hole, the drill stand is leveled and secured in position. Three holes are then drilled from this drill setup ensuring that all of the holes are parallel and concentric. First, an 11.1-mm- (0.4375-in- ) diameter hole is drilled dry into the shotcrete using a rotary percussive bit, to a depth of 60 mm (2.375 in), assuming a shotcrete thickness of 75 mm (3 in). Next, the hole is cleaned, filled with a quick-setting, two-part epoxy adhesive, and a 9.5-mm- (0.375-in- ) diameter pull anchor is inserted. After the epoxy has initially set or gelled (about 15 min), a 102-mm- (4-in- ) diameter diamond core bit is used to wet drill a second hole through the shotcrete to a depth of about 25 to 50 mm (1 to 2 in) into the underlying rock. Finally, a 127-mm- (5-in- ) diameter diamond core bit is used to wet drill a shallow kerf for seating the base of the pulling fixture. After the epoxy has fully set (30-60 min), a threaded extension rod is connected to the pull anchor with a coupling nut; the pulling fixture is then carefully placed over the core sample with the base of its reaction ring positioned in the kerf of the outer drill hole. Next, a collet and a slip-on, quick-threading locknut are connected to the threaded extension rod to serve as a mechanical stop for the pulling fixture's ram. The hydraulic hose from the hand pump is then connected to the loading ram, and the pressure gauge is zeroed. To conduct a test, an increasing tensile load is applied to the core sample through a slow and steady movement of the pump handle until the core breaks. The adhesion strength of the test core is determined by converting the maximum hydraulic pressure value, saved on the pressure gauge's digital display, to the maximum tensile stress acting normal to the core's failure surface. Typical adhesion test results comparing tensile strength with shotcrete curing age are shown in Figure 4"--NIOSHTIC-2
Field-use early-strength shotcrete test system( )

1 edition published in 2011 in English and held by 235 WorldCat member libraries worldwide

"Objective: To develop a practical method of measuring shotcrete early strength ansite in the first six hours after application using a partial beam test standard, ASTM C 1 16-90. Determining the early-strength development of as-sprayed shotcrete can improve mine safety by identifying appropriate reentry times and providing a convenient means of quality control during application. A more thorough understanding of shotcrete early strength will lead to improvements in ground support practices, thereby preventing ground falls and reducing mine roof-fall accidents. Background: When shotcrete is used as part of a multi component ground support system, it is important to know when the material has developed enough strength to be self-supporting and allow for reentry and emplacement of the remaining support elements that require drilling of the shotcrete layer without degradation. Typical reported values for this threshold strength for North American mines range from 1 to 1.6 MPa (145 to 233 psi) [O'Toole and Pope 2006], with a compressive strength equivalent to 1 MPa (145 psi) being the norm [Rispin et al. 2003; O'Toole and Pope 2006]. Typical ground control support includes a shotcrete flash coat 19- to 25-mm (3 /4- to 1-in) thick, followed by screen, plates, bolts, and a second layer of shotcrete bringing the combined thickness to 75 to 100 mm (3 to 4 in). In areas requiring rehabilitation, the second layer of shotcrete is plated and bolted as well. While testing cored samples after 24 hours is standard, this is not practical for the one- to six-hour period following application when shotcrete unconfined compressive strengths are less than 10 MPa (1,450 psi). Indirect methods are typically used to determine shotcrete strength during the early stages of curing because the partially cured or green material is difficult to sample and test. While problems with inconsistent test results have been reported with the penetrometer-type devices, beam molds have been used successfully for creating shotcrete test specimens in the United States and Canada. Operating the Partial Beam Test System: The test unit is a self-contained, servo-controlled, stiff-frame press. Partial beam test samples are obtained by spraying shotcrete into 102- x 102- x 152-mm (4- x 4- x 6-in) mold boxes. After the samples have been sprayed, tests are conducted at one-hour intervals over the next six hours (one- through six-hour tests). The shotcrete samples are carefully demolded by disassembling the mold fixtures and removing the enclosed sample. Next, a shotcrete sample is placed in a specialized testing fixture and centered under the loading head of the test machine. When the test sequence is initiated, a programmable-logic-controller- (PLC) driven press applies a fixed-rate load to the sample. The load profile is shown on a graphical output display, and the measured test parameters (time, displacement, and load) are stored on a thumb drive. Once the operator observes a well-defined peak in the load profile curve, the test is completed and the test machine's loading platen can be returned to its initial starting position. Peak load is typically reflected by the development of large vertically oriented cracks along the platen-to sample contact edges, which are indicative of the failure plane. There is a marked difference in early-strength gain between sprayed and cast shotcrete. The cast shotcrete samples have a similar strength gain profile to that of cast concrete samples."--NIOSHTIC-2
Text-book of mechanics by Louis A Martin( Book )

15 editions published between 1906 and 2015 in English and held by 165 WorldCat member libraries worldwide

Oeuvres complètes de J. Racine, Vol. 3, [...] : avec les notes de tous les commentateurs by Jean Racine( )

14 editions published in 1822 in Undetermined and held by 140 WorldCat member libraries worldwide

Education in Kenya before independence; an annotated bibliography by L. A Martin( Book )

11 editions published between 1968 and 1969 in English and Undetermined and held by 101 WorldCat member libraries worldwide

Lettres à Sophie sur la physique, la chimie, et l'histoire naturelle by Louis-Aimé Martin( Book )

26 editions published between 1811 and 1847 in French and Undetermined and held by 35 WorldCat member libraries worldwide

Oeuvres complètes by Bernardin de Saint-Pierre( Book )

17 editions published between 1818 and 1833 in French and Undetermined and held by 22 WorldCat member libraries worldwide

Oeuvres philosophiques by René Descartes( Book )

10 editions published between 1838 and 1852 in French and held by 21 WorldCat member libraries worldwide

Oeuvres de Jacques-Henri-Bernardin de Saint-Pierre by Jacques Henri Bernardin de Saint-Pierre( Book )

12 editions published between 1833 and 1840 in French and held by 19 WorldCat member libraries worldwide

Oeuvres de Fénelon : archevèque de Cambrai by François de Salignac de La Mothe- Fénelon( Book )

13 editions published between 1838 and 1861 in French and held by 18 WorldCat member libraries worldwide

Oeuvres complètes de Jacques-Henri-Bernardin de Saint-Pierre, mises en ordre et précédées de la vie de l'auteur by Bernardin de Saint-Pierre( Book )

5 editions published between 1818 and 1840 in French and held by 17 WorldCat member libraries worldwide

Œuvres de Descartes by René Descartes( Book )

12 editions published between 1838 and 1863 in French and Undetermined and held by 16 WorldCat member libraries worldwide

Harmonies de la nature by Jacques-Henri-Bernardin de Saint-Pierre( Book )

9 editions published between 1815 and 1830 in French and held by 14 WorldCat member libraries worldwide

Oeuvres complètes by Henri Bernardin de Saint-Pierre( Book )

10 editions published between 1818 and 1833 in French and Undetermined and held by 14 WorldCat member libraries worldwide

Les mille et une nuits : contes arabes by Antoine Galland( Book )

8 editions published between 1838 and 1879 in French and held by 13 WorldCat member libraries worldwide

"One Thousand and One Nights is a collection of Middle Eastern and South Asian stories and folk tales compiled in Arabic during the Islamic Golden Age. It is often known in English as the Arabian Nights, from the first English language edition (1706), which rendered the title as The Arabian Nights' Entertainment. The work as we have it was collected over many centuries by various authors, translators and scholars across the Middle East and North Africa. The tales themselves trace their roots back to ancient and medieval Arabic, Persian, Indian, Egyptian and Mesopotamian folklore and literature. In particular, many tales were originally folk stories from the Caliphate era, while others, especially the frame story, are most probably drawn from the Pahlavi Persian work Hazar Afsan which in turn relied partly on Indian elements. Though the oldest Arabic manuscript dates from the 14th century, scholarship generally dates the collection's genesis to around the 9th century. -- from Wikipedia, the free encyclopedia
Harmonies de la nature by Henri Bernardin de Saint-Pierre( Book )

8 editions published between 1815 and 1830 in French and held by 13 WorldCat member libraries worldwide

Lettres à Sophie sur la physique, la chimie et l'histoire naturelle by Louis-Aimé Martin( Book )

6 editions published between 1810 and 1847 in French and held by 13 WorldCat member libraries worldwide

Correspondance de J.-H. Bernardin de Saint Pierre by Henri Bernardin de Saint-Pierre( Book )

4 editions published in 1826 in French and held by 13 WorldCat member libraries worldwide

Oeuvres de Fénelon by François de Salignac de La Mothe Fénelon( Book )

5 editions published between 1835 and 1861 in Undetermined and held by 12 WorldCat member libraries worldwide

Le lazaret de Kavak ou Une quarantaine dans le Bosphore by L.-A Martin( )

3 editions published in 1874 in French and held by 12 WorldCat member libraries worldwide

 
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Alternative Names
A.-L.G.D.

Aimé-Martin 1786-1847

Aimé-Martin 1786-1847 M.

Aimé-Martin L.

Aimé-Martin, L. 1786-1847

Aimé-Martin, L. (Louis), 1786-1847

Aimé-Martin Louis

Aimé-Martin, Louis 1786-1847

Aimé-Martin M.

Aimé-Martin, M. 1786-1847

Aimé-Martin, M. (Louis), 1786-1847

D., A.-L.G.

Martin, A. 1786-1847

Martin, Aimé.

Martin, Aimé 1786-1847

Martin Jeune

Martin L.A.

Martin, L.-A. 1786-1847

Martin, L.-A. (Louis-Aimé), 1786-1847

Martin L.-Aimé

Martin, L.-Aimé 1786-1847

Martin, L.-Aimé (Louis-Aimé), 1786-1847

Martin, Louis 1786-1847

Martin, Louis A. 1786-1847

Martin Louis-Aimé

un Lyonnais

Languages
French (133)

English (27)