scholarly journals Precursors to the shear failure of rock discontinuities

2014 ◽  
Vol 41 (15) ◽  
pp. 5467-5475 ◽  
Author(s):  
Ahmadreza Hedayat ◽  
Laura J. Pyrak-Nolte ◽  
Antonio Bobet
Keyword(s):  
Shear Failure ◽  
Rock Discontinuities

An experimental system to evaluate impact shear failure of rock discontinuities

2021 ◽  
Vol 92 (3) ◽  
pp. 034501
Author(s):  
Wei Yao ◽  
Chonglang Wang ◽  
Kaiwen Xia ◽  
Xin Zhang
Keyword(s):  
Shear Failure ◽  
Experimental System ◽  
Rock Discontinuities

INTERPRETATION OF SURFACE EROSION AS SHEAR FAILURE OF SOIL CAUSED BY SURFACE FLOW

2018 ◽  
Vol 74 (5) ◽  
pp. I_901-I_906
Author(s):  
Yosuke HIGO ◽  
Shinichiro ONDA ◽  
Daiki TAKANO ◽  
Toshiki YAMAUCHI
Keyword(s):  
Shear Failure ◽  
Surface Flow ◽  
Surface Erosion

scholarly journals Evaluation of Dynamic Properties of Sodium-Alginate-Reinforced Soil Using A Resonant-Column Test

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2743
Author(s):  
Seongnoh Ahn ◽  
Jae-Eun Ryou ◽  
Kwangkuk Ahn ◽  
Changho Lee ◽  
Jun-Dae Lee ◽  
...  
Keyword(s):  
Shear Modulus ◽  
Sodium Alginate ◽  
Shear Failure ◽  
Dynamic Properties ◽  
Damping Ratio ◽  
Reinforced Soil ◽  
Resonant Column ◽  
Column Test ◽  
Alginate Solution ◽  
Resonant Column Test

Ground reinforcement is a method used to reduce the damage caused by earthquakes. Usually, cement-based reinforcement methods are used because they are inexpensive and show excellent performance. Recently, however, reinforcement methods using eco-friendly materials have been proposed due to environmental issues. In this study, the cement reinforcement method and the biopolymer reinforcement method using sodium alginate were compared. The dynamic properties of the reinforced ground, including shear modulus and damping ratio, were measured through a resonant-column test. Also, the viscosity of sodium alginate solution, which is a non-Newtonian fluid, was also explored and found to increase with concentration. The maximum shear modulus and minimum damping ratio increased, and the linear range of the shear modulus curve decreased, when cement and sodium alginate solution were mixed. Addition of biopolymer showed similar reinforcing effect in a lesser amount of additive compared to the cement-reinforced ground, but the effect decreased above a certain viscosity because the biopolymer solution was not homogeneously distributed. This was examined through a shear-failure-mode test.

scholarly journals Strengthening of RCC Beams in Shear by Using SBR Polymer-Modified Ferrocement Jacketing Technique

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Rajinder Ghai ◽  
Prem Pal Bansal ◽  
Maneek Kumar
Keyword(s):  
Carrying Capacity ◽  
Shear Failure ◽  
Ultimate Load ◽  
Load Test ◽  
Wire Mesh ◽  
Styrene Butadiene Rubber ◽  
Shear Load ◽  
Butadiene Rubber ◽  
Load Carrying Capacity ◽  
Load Carrying

There is a common phenomenon of shear failure in RCC beams, especially in old buildings and bridges. Any possible strengthening of such beams is needed to be explored that could strengthen and make them fit for serviceable conditions. The present research has been made to determine the performance of predamaged beams strengthened with three-layered wire mesh polymer-modified ferrocement (PMF) with 15% styrene-butadiene-rubber latex (SBR) polymer. Forty-eight shear-designed and shear-deficient real-size beams were used in this experimental work. Ultimate shear load-carrying capacity of control beams was found at two different shear-span (a/d) ratios 1 and 3. The sets of remaining beams were loaded with different predetermined damage levels of 45%, 75%, and 95% of the ultimate load values and then strengthened with 20 mm thick PMF. The strengthened beams were then again tested for ultimate load-carrying capacity by conducting the shear load test at a/d = 1 and 3. As a result, the PMF-strengthened beams showed restoration and enhancement of ultimate shear load-carrying capacity by 5.90% to 12.03%. The ductility of strengthened beams was improved, and hence, the corresponding deflections were prolonged. On the other hand, the cracking pattern of PMF-strengthened beams was also improved remarkably.

scholarly journals Shear failure of the Meraka hardwood in bolted connections loaded parallel to the timber grain

2021 ◽  
Vol 1101 (1) ◽  
pp. 012005
Author(s):  
Abdul Razak Abdul Karim ◽  
Pierre Quenneville ◽  
Norazzlina M. Sa’don
Keyword(s):  
Shear Failure ◽  
Bolted Connections
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