Results 31 to 40 of about 3,514,101 (170)

Failure Transition and Validity of Brazilian Disc Test under Different Loading Configurations: A Numerical Study

Mathematics, 2022
The Brazilian disc test is a popular tensile strength test method for engineering materials. The fracture behavior of specimens in the Brazilian disc test is closely related to the validity of the test results.
Peng Xiao, Guoyan Zhao, Huanxin Liu
doaj   +1 more source

Relations between indirect tensile and flexural strengths for dry and plastic concretes

Revista IBRACON de Estruturas e Materiais
Indirect tensile strength is not usually used for concrete mixtures proportioning and its technological control; flexural strength tests under third point loads arrangement are the pattern for such goals. Indeed, neither of such tests have the capability
J. T. Balbo
doaj   +1 more source

Mechanical properties of Michigan Basin's gypsum before and after saturation

Journal of Rock Mechanics and Geotechnical Engineering, 2019
The stability analysis of an abandoned underground gypsum mine requires the determination of the mine pillar's strength. This is especially important for flooded abandoned mines where the gypsum pillars become saturated and are subjected to dissolution ...
Mohammadhossein Sadeghiamirshahidi, Stanley J. Vitton   +1 more
doaj   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Effective statistical models for prediction of the tensile strength of rocks

Kuwait Journal of Science
This study investigated the relationships between indirect and direct tensile strength values of rocks using regression analysis. The uniaxial tensile strength (UTS) values of nine distinct rock specimens were ascertained, after which assessments were ...
Tamer Efe, Servet Demirdag, Nazmi Sengun, Kenan Tufekci, Rasit Altindag   +4 more
doaj   +1 more source

Effect of specimen size and loading conditions on indirect tensile test results

Materiales de Construccion, 2009
Due to the difficulties inherent in the direct measurement of concrete tensile strength, experimental methods have been devised to determine this property indirectly.
S. Carmona
doaj   +1 more source

A Flexible Particle Model for Rock Fracture: Validation and Assessment of the Influence of Deformability on the Macroscopic Response

Geotechnics, 2022
Circular/spherical rigid particle models that were initially applied to rock fracture studies were not able to match the ratio of the compressive strength to tensile strength that occurs in rock.
Nuno Monteiro Azevedo, Maria Luísa Braga Farinha, Sérgio Oliveira   +2 more
doaj   +1 more source

Leucaena Oil Functionalized With Osmium Tetroxide as a Precursor for Polyol‐Based Polyurethane

Journal of Polymer Science, EarlyView.
Leucaena leucocephala seed oil is converted into a hydroxyl‐functional biopolyol through OsO4‐mediated dihydroxylation. The resulting biopolyol shows a hydroxyl number of 160–175 mg KOH g−1 and is successfully used to produce flexible, open‐cell polyurethane foams, highlighting a renewable route for converting underutilized biomass into value‐added ...
Giovanni Miraveti Carriello, Lucas Repecka Alves, Guilherme Manassés Pegoraro, Henrique Solowej Medeiros Lopes, Amanda Stefanie Jabur de Assis, Thaís de Agrella Janolla, David Rodrigues Gomes, Diego Aleixo da Silva, Beatriz Merillas, Fabiana Aparecida Lobo, Fabio Minoru Yamaji, Maira de Lourdes Rezende, Aparecido Junior de Menezes, Giovanni Pimenta Mambrini   +13 more
wiley   +1 more source

Influence of shear reinforcement detailing on the shear capacity of reinforced concrete beams

Structural Concrete, EarlyView.
Abstract Alternative shear reinforcement layouts that do not fully enclose the longitudinal tensile reinforcement can significantly improve the constructability of reinforced concrete (RC) members. However, their influence on shear transfer mechanisms is not yet fully understood. To address this gap, an experimental program comprising 10 shear tests on
Franz Untermarzoner, Michael Rath, Simon Leitner, Tobias Huber, Johann Kollegger, Patrick Huber   +5 more
wiley   +1 more source

Effect of Silane Incorporation on the Bonding Performance of Universal Adhesives to Dentin

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Purpose The effect of silane in universal adhesives (UAs) on dentin adhesion remains unclear. Therefore, this study evaluated the dentin bonding of UAs with and without silane immediately and after thermocycling. Materials and Methods Sixty‐four sound human molars were randomly assigned to eight groups according to silane incorporation (UAs ...
Diego Melendez, Camila Farias Monteles, Eduarda Kaizer Vieira, Pedro H. Moreira, Alessandro D. Loguercio   +4 more
wiley   +1 more source