Experimental Research on Impact and Flexural Behavior of RC Beams Strengthened with High Strength Steel Wire Mesh and High Performance Mortar

Author(s):  
Wei-zhang Liao ◽  
Wei Zhang
2013 ◽  
Vol 444-445 ◽  
pp. 1067-1071
Author(s):  
Li Ping Sun ◽  
Zheng Liu ◽  
Yan Zi Liu

The high strength steel wire mesh and polymer mortar reinforcement technology has the advantages of high strength, high temperature resistance,corrosion,resistant, etc. In this paper,we analysis the flexural properties of RC beams strengthened by it using ANSYS.To bear the same moment in the same area of the reinforcement steel strand, and then get effect of different span and different reinforcement methods (comparative beam, direct reinforced beams,and secondary load of reinforced beams) on flexural load-carrying capacity and deflection, then compare and analysis,and draws the conclusion which can provide reference for practical engineering.


2013 ◽  
Vol 482 ◽  
pp. 15-19
Author(s):  
Chen Xing Yang ◽  
Zheng Liu ◽  
Li Ping Sun ◽  
Jiong Li

Based on the experimental study of shear strengthened of reinforced concrete rectangular beam strengthened by high-strength steel wire mesh and polymer mortar , the finite element extended analysis was used. The finite element analysis software showed that with the increasing of the strand dosage and reinforcement strand length,the shear strength and stiffness of strengthened members improved . However,with the increasing of shear span ratio , the shear strength and stiffness reduced obviously .


2014 ◽  
Vol 488-489 ◽  
pp. 809-812
Author(s):  
Jia Qi Wang ◽  
Min Duan ◽  
Ping Shi Li

The high strength stainless steel wire mesh and high-performance mortar reinforcement has been gradually applied in construction, bridge reinforcement project. Study of the reinforcement at home and abroad mainly focus on research of strengthening RC beam shear, bending, and seismic performance. Although the application of RC column has already been carried out, there is also a short of basic technical an applied research for further study. After looking through a large amount of references, this article gives a summary of the present study about reinforcing RC column with the reinforcement, draws some conclusions and predicts the prospect of development.


2019 ◽  
Vol 23 (6) ◽  
pp. 1142-1153 ◽  
Author(s):  
Jianan Qi ◽  
Jingquan Wang ◽  
Zhongwen Zhang ◽  
Wenchao Li ◽  
Yuqing Hu

An experimental program investigating the flexural behavior of an innovative dovetail ultra-high performance concrete joint for connecting precast ultra-high performance concrete slabs in composite bridges is reported in this study. Test parameters included interface treatment method, joint material, reinforcing bar overlapping form, and prestressing level. Specifically, a new steel wire mesh interface treatment was proposed, which could generate an additional fiber-bridging mechanism in the joint surface. An enhancement of 17.4%, 20.1%, and 50% on flexural cracking strength, ultimate strength, and ductility were obtained by using the steel wire mesh. Joint material showed no significant influence, while prestressing had obvious influence on the flexural behavior of ultra-high performance concrete joints. The post-cracking behavior, ductility performance, and stiffness degradation of the tested specimens were analyzed. Good deformability was obtained for the jointed ultra-high performance concrete slabs as the ratio of deflection to span was about 1/50 at failure. The post-cracking stiffness was retained at about 90% of the initial stiffness, while the ultimate stiffness was retained at about 10% of the initial stiffness. The research findings are useful in popularizing and applying the proposed innovative dovetail ultra-high performance concrete joints in composite bridges.


Author(s):  
Jun Shi ◽  
Jing Rao ◽  
Jianfeng Shi ◽  
Ping Xu ◽  
Taiqing Shao ◽  
...  

A steel reinforced plastic pipe (PSP), which is composed of two layers of high density polyethylene (HDPE) matrix and a high strength steel wire mesh skeleton, has wide applications in many industrial areas, such as gas and petroleum transportation, etc. In order to achieve higher efficency and lower costs, a large diameter PSP has been developed. However, requirements of the large diameter PSP in safety and economy are much higher, compared with those small diameter PSPs, and some potential problems should be taken into account. In this paper, relevant structural parameters of the large diameter PSP are determined, based on a previously proposed model, and a short-term burst test is carried out. The experiment results agree with the theoretical results quite well. Subsequently, the resistance of vertical pressure and uniform external pressure are evaluated by using experiment investigation and finite element method, respectively. And corresponding results indicate the large diameter PSP with determined structural parameters is qualified to use.


2019 ◽  
Vol 210 ◽  
pp. 1150-1163 ◽  
Author(s):  
Qingfei Meng ◽  
Chengqing Wu ◽  
Yu Su ◽  
Jun Li ◽  
Jian Liu ◽  
...  

2012 ◽  
Vol 256-259 ◽  
pp. 911-917
Author(s):  
Meng Jie Zhang ◽  
Ming Hua He ◽  
Ke Gui Xin ◽  
Tian Shen Zhang ◽  
Yuan Ma

The pre-stressed stainless steel wire mesh (SSWM) –mortar (M) is a pre-stressed laminate structure for structural strengthening and rehabilitation. Pre-stressing the stainless steel wire mesh is the key technology for engineering practice. A jogged anchor is proposed for anchoring large diameter SSWM conveniently. The flexural performances of 5 damaged RC beams strengthened by pre-stressed SSWM-M and one referential RC beam were tested. The experimental results indicates that the large diameter pre-stressed SSWM-M has a better performance in controlling the crack growth, restoring the flexural capacity and stiffness than the small diameter pre-stressed SSWM-M.


2019 ◽  
Vol 27 (4(136)) ◽  
pp. 94-101
Author(s):  
S. Paramasivam ◽  
M. Rameshkumar ◽  
R. Malathy ◽  
C. Prakash

This paper presents the effect of warp knit textile reinforcement in ferrocement laminates. In general, steel wire mesh is used as ferrocement reinforcement, which is often known as chicken mesh. The need for the replacement of steel mesh is the problem of corrosion, which reduces the durability of ferrocement laminate. High performance synthetic fibres and fabrics are constantly used in various research works as reinforcement in concrete. In this paper, an attempt was made to incorporate three different nylon warp knit mesh structures in the place of chicken mesh. Ferrocement composites were produced with chicken mesh and nylon warp knit fabrics. The flexural properties of ferrocement laminates were analysed in terms of the first crack load, ultimate load, energy absorption capacity and ductility factor. Nylon square mesh with 3 layers in the reinforcement has a 2.5 kN first crack load and 3.36 kN ultimate load, which is higher than chicken mesh reinforcement in ferrocement laminate. The results show that there is an improvement in the flexural properties of ferrocement laminates reinforced with a nylon warp knit structure. The flexural parameters have a direct relationship with the number of layers used in the reinforcement.


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