scholarly journals Bond behaviour between NSM CFRP strips and concrete substrate using single-lap shear testing with cement-based adhesives

2016 ◽  
Vol 17 (1) ◽  
pp. 28-38 ◽  
Author(s):  
Nihad Tareq Khshain Al-Saadi ◽  
Riadh Al-Mahaidi ◽  
Kamiran Abdouka
Keyword(s):  
Shear Testing ◽  
Bond Behaviour ◽  
Lap Shear

Bond behaviour between NSM CFRP strips and concrete substrate using single-lap shear testing with epoxy adhesive

2015 ◽  
Vol 132 ◽  
pp. 205-214 ◽  
Author(s):  
Nihad Tareq Khshain ◽  
Riadh Al-Mahaidi ◽  
Kamiran Abdouka
Keyword(s):  
Epoxy Adhesive ◽  
Shear Testing ◽  
Bond Behaviour ◽  
Lap Shear

Bond Behaviour of FRCM Composites: Effects of High Temperature

2019 ◽  
Vol 817 ◽  
pp. 161-166
Author(s):  
Antonio Iorfida ◽  
Sebastiano Candamano ◽  
Fortunato Crea ◽  
Luciano Ombres ◽  
Salvatore Verre ◽  
...  
Keyword(s):  
High Temperature ◽  
Failure Mode ◽  
Failure Modes ◽  
Construction Materials ◽  
Mechanical Damage ◽  
High Density ◽  
Bond Behaviour ◽  
Bond Slip ◽  
Masonry Construction ◽  
Lap Shear

The fire remains one of the serious potential risks to most buildings and structures, as recently it’s been witnessed in Paris’ historic Notre Dame Cathedral and London’s Grenfell Tower. Concrete and masonry construction materials suffer physiochemical changes and mechanical damage caused by heating that is usually confined to the outer surface but can eventually compromise their load-bearing capacity. FRCM systems could provide when applied, supplemental fire insulation on pre-existing structural members, but there is a lack of knowledge about their properties in those conditions. This experimental work, thus, aims to evaluate the mechanical behaviour of carbon-FRCM and basalt-FRCM composites bonded to masonry substrate after high temperature exposure. Temperatures of 100 °C, 300 °C and 500 °C over a period of three hours were used to investigate the degradation of their mechanical properties. Single lap shear bond tests were carried out to evaluate the bond-slip response and failure modes. For all the tested temperatures higher peak stresses were measured for carbon-FRCM composite than basalt ones. Furthermore, low-density basalt-FRCM composite showed higher peak stresses and lower global slips up to 300 °C than high-density one. Carbon-FRCM composite failure mode was not effected by temperature. High-density basalt-FRCM composite showed a change in failure mode between 300 °C and 500 °C.

Deformation analysis of lap-shear testing of solder joints

2005 ◽  
Vol 53 (9) ◽  
pp. 2633-2642 ◽  
Author(s):  
Y.-L. Shen ◽  
N. Chawla ◽  
E.S. Ege ◽  
X. Deng
Keyword(s):  
Solder Joints ◽  
Deformation Analysis ◽  
Shear Testing ◽  
Lap Shear

Ultrasonic Welding of Glass Fiber Reinforced Polypropylene

2012 ◽  
Vol 557-559 ◽  
pp. 1313-1316
Author(s):  
Jian Guang Zhang ◽  
Krishan.K. Chawla ◽  
Uday.K. Vaidya
Keyword(s):  
Glass Fiber ◽  
Ultrasonic Welding ◽  
Maximum Strength ◽  
Weld Strength ◽  
Fiber Reinforced ◽  
Shear Testing ◽  
Polypropylene Composites ◽  
Lap Shear ◽  
Glass Fiber Reinforced ◽  
Weld Time

Glass fiber reinforced polypropylene composites were joined by ultrasonic welding, employing various weld conditions. Single-lap shear testing was used to evaluate the effect of weld time and weld pressure on the weld performance. The weld strength increased with increasing weld time and weld pressure until a plateau or maximum strength was reached. The required weld time to obtain a complete weld became shorter when the weld pressure was increased. As lower weld pressure was applied, a complete weld could not be obtained unless relatively longer weld times were employed. A welding map, showing conditions of weld time and weld pressure to get a good weld, was obtained.

Effect of the Presence of Mortar Joints in the Bond Behaviour of Tuff Masonry Elements

2014 ◽  
Vol 624 ◽  
pp. 526-533 ◽  
Author(s):  
Francesca Ceroni ◽  
Angelo Garofano ◽  
Marisa Pecce ◽  
Gian Marco Procaccini
Keyword(s):  
Southern Italy ◽  
Base Material ◽  
Stress Transfer ◽  
Local Stress ◽  
Bond Behaviour ◽  
Lap Shear ◽  
Experimental Campaign ◽  
Different Types ◽  
Glass Carbon ◽  
Set Up

In this paper, the bond behaviour of masonry elements made of tuff stone and bonded with different types of FRP fabrics (glass, carbon, basalt) has been investigated through an experimental campaign. Tuff is a natural stone representing a very common base material for the construction of masonry buildings in Southern Italy and many Mediterranean areas. Two series of specimens have been tested: 1) single blocks and 2) prisms made of three blocks and two mortar joints. The tests have been carried out according to a single-lap shear scheme according to a push-pull set-up. Presence of a plastering was also investigated for both series. The experimental results have been examined in terms of both debonding load and local stress transfer phenomena in order to evidence the performance of the different fibres and the effect of both mortar joints and plastering.

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