scholarly journals Strengthening of Brick Masonry with Welded Wire Mesh

2018 ◽  
Vol 7 (3.12) ◽  
pp. 133
Author(s):  
V Umamaheswari ◽  
S Kanchidurai ◽  
P A. Krishnan ◽  
K Baskar
Keyword(s):  
Bond Strength ◽  
Low Cost ◽  
Strength Test ◽  
Brick Masonry ◽  
Wire Mesh ◽  
Seismic Region ◽  
Development Method ◽  
Flexural Bond Strength ◽  
Wire Meshes ◽  
Masonry Prism

Unreinforced brickwork (URM) is the most established development method. URM being weak can't withstand the parallel burdens amid a seismic region. Consequently, it is important to locate an appropriate low-cost technique to fortify existing brickwork structures. In this paper flexural bond strength test was conducted on the rectangular brick masonry prisms with two types of welded wire meshes (epoxy coated mesh with the spacing of 12mm and galvanized iron wire mesh with the spacing of 15mm). Masonry prisms were cast and tested as per the guidelines are given in ASTM E518 /E518-15 standards. The results of the flexural bond strength embedded masonry prism show greater when comparing the prisms with no mesh embedment.

scholarly journals Strengthening of Unreinforced Masonry with Fibre Reinforced Concrete

2018 ◽  
Vol 7 (3.12) ◽  
pp. 550
Author(s):  
S Gayathri ◽  
S Kanchidurai ◽  
P A. Krishanan ◽  
K Baskar
Keyword(s):  
Experimental Study ◽  
Bond Strength ◽  
Steel Fibre ◽  
Unreinforced Masonry ◽  
Strength Test ◽  
Geometrical Parameters ◽  
Masonry Buildings ◽  
Fibre Reinforced Concrete ◽  
Flexural Bond Strength ◽  
Masonry Prism

Unreinforced Masonry buildings are vulnerable because the walls and parapets aren’t securely tried to the floors and roof. In an earthquake, parapets can break away, walls pull apart and the floors collapse. This paper presents the experimental study performed on the flexural bond strength of unreinforced brick masonry prism. Different percentage (1%, 2%, and 3%) of Hooked Steel Fibre was used. One of the most geometrical parameters of fibres is their length, diameter and aspect ratio. Masonry prism will be cast and tested as per the guidelines are given in ASTM E518/E518-15. The results of the flexural bond strength test of prisms with and without fibre discussed.

scholarly journals Flexural and Shear Bond Strength of Sediment Brick Masonry

2019 ◽  
Vol 8 (4) ◽  
pp. 6288-6294
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Cement Mortar ◽  
Strength Test ◽  
Brick Masonry ◽  
Clay Brick ◽  
Lime Mortar ◽  
Flexural Bond Strength ◽  
Bond Strengths ◽  
Masonry Units

This paper presents an experimental investigation of shear and flexural bond strength of masonry prisms for newly developed sediment masonry bricks. The masonry prisms were constructed in three levels stack-bonded prisms for shear bond strength test and five levels stack-bonded prisms for flexural bond strength test using cement mortar and cement-lime mortar with pre-wetted and dry masonry units. The bond strengths of sediment brick masonry were tested accordance with RILEM TC 127-MS and ASTM E518 for shear and flexural bond strengths respectively. The results were compared to clay brick and cementsand brick masonry. The results show that pre-wetted sediment brick masonry exhibits higher flexural and shear bond strengths of about 1.5 times and 5 times respectively compared to dry (nonwetted) sediment brick masonry. Using cement-lime mortar in pre-wetted sediment brick masonry leads to increment of the bond strengths and pre-wetting action is essential for sediment brick masonry to prevent failure of shear bond strength.

Behavior of Self Compacted Concrete Ferrocement Beams

2021 ◽  
pp. 1-14
Author(s):  
Abeer M. Erfan ◽  
Tamer H. K. Elafandy ◽  
Mahmoud M. Mahran ◽  
Mohamed Said
Keyword(s):  
Energy Absorption ◽  
Low Cost ◽  
Steel Wire ◽  
Construction Material ◽  
Point Load ◽  
Wire Mesh ◽  
Experimental Program ◽  
Cracking Behavior ◽  
Group B ◽  
Wire Meshes

Many researchers have been conducted on the ferrocement as a low cost construction material and a flexible structural system. This experimental investigation on the behavior of ferrocement beams after exposed to different type of ferrocement and different of ferrocement layer are presented in this paper. The experimental program consisted of seven simply supported beams tested up to failure under four-point load. The dimensions of 150mm×250mm×2000mm. Each beam was reinforced using steel 2 f 12 in top and 2 f10 in bottom and the stirrups was 10 f 10/m. In addition to six of them contains ferrocement different steel wire meshes and different of ferrocement layer. The test specimens are divided in three groups and the results of each one compared with the control specimen. The first group (A) which used the welded wire mesh. The second group (B) which used the expanded wire mesh. But the third group (C) which reinforced using woven wire mesh. The mid span deflection, cracks, reinforcement and concrete strains of the tested beams were recorded and compared. The performance of the test beams in terms of ultimate flexure load cracking behavior and energy absorption were investigated. The experimental results emphasized that high ultimate loads, better crack resistance control, high ductility, and good energy absorption properties could be achieved by using the proposed ferrocement beams. The cracks propagation decreased and its number and width decreased by using woven, expanded and welded wire mesh especially in specimens with two layers of wire mesh. Theoretical calculation was carried out to compare the oplained results with the theoretical ones, which show good agreement.

scholarly journals Out-of-Plane Behavior of Masonry Wall Strengthened Using Expanded Wire Mesh

2018 ◽  
Vol 7 (3.12) ◽  
pp. 554
Author(s):  
S Kanchidurai ◽  
P A. Krishanan ◽  
K Baskar ◽  
K Saravana Raja Mohan
Keyword(s):  
Construction Industry ◽  
Masonry Wall ◽  
Strength Test ◽  
Wire Mesh ◽  
Propagation Path ◽  
Test Results ◽  
Wall Panel ◽  
Compressive Strength Test ◽  
Out Of Plane ◽  
Masonry Prism

Brick masonry is the principal part of the construction industry. This paper presents the result of the expanded wire mesh embedded into the masonry wall panel; expanded mesh (EM) is the inexpensive locally available material on the market. Through the experimental study, the primary affecting parameters recognized, and the methodology of the embedment details established, the preliminary survey was conducted as per the guidelines are given in the ASTM E518. Totally three numbers of control specimen and three numbers of EM embedded specimen are cast, and compressive strength test of masonry prism also evaluated to identify the crack propagation path. The test results turned out to be highly promising, out of plane damage was less in the EM embedded specimen also it was designated the cracks are reduced.

scholarly journals Strength Enhancement of Interlocking Hollow Brick Masonry Walls with Low-Cost Mortar and Wire Mesh

2021 ◽  
Vol 6 (12) ◽  
pp. 166
Author(s):  
Panuwat Joyklad ◽  
Nazam Ali ◽  
Muhammad Usman Rashid ◽  
Qudeer Hussain ◽  
Hassan M. Magbool ◽  
...  
Keyword(s):  
Failure Modes ◽  
Ultimate Load ◽  
Cement Mortar ◽  
Low Cost ◽  
Brick Masonry ◽  
Wire Mesh ◽  
Masonry Walls ◽  
Structural Behaviour ◽  
Hollow Brick ◽  
Strength And Ductility

Cement–clay Interlocking Hollow Brick Masonry (CCIHBM) walls are characterized by poor mechanical properties of bricks and mortar. Their performance is observed to be unsatisfactory under both gravity and seismic loads. There is an urgent need to develop sustainable, environmentally friendly, and low-cost strengthening materials to alter the structural behaviour of brick masonry walls in terms of strength and ductility. The results of an experimental investigation conducted on the diagonal compressive response of CCIHBM walls are presented in this study. In this experimental study, a total of six CCIHBM walls were constructed using cement–clay interlocking hollow bricks. One was tested as a control or reference wall, whereas the remaining walls were strengthened using cement mortar. In some walls, the cement mortar was also combined with the wire mesh. The research parameters included the type of Ordinary Portland Cement (OPC) (Type 1 and Type 2), thickness of cement mortar (10 mm and 20 mm), and layers of wire mesh (one and three layers). The experimental results indicate that control or unstrengthened CCIHBM walls failed in a very brittle manner at a very low ultimate load and deformation. The control CCIHBM wall, i.e., W-CON, failed at an ultimate load of 247 kN, and corresponding deflection was 1.8 mm. The strength and ductility of cement mortar and wire mesh-strengthened walls were found to be higher than the reference CCIHBM wall. For example, the ultimate load and deformation of cement-mortar-strengthened wall were found to be 143% and 233% higher than the control wall, respectively. Additionally, the ultimate failure modes of cement mortar and wire mesh strengthened were observed as ductile as compared to the brittle failure of reference wall or unstrengthened CCIHBM wall, which increased by 66% and 150% as compared with the control wall.

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