scholarly journals Experimental research on concrete strength prediction by Limpet pull-off test in China

2014 ◽  
Vol 5 (1) ◽  
pp. 1 ◽  
Author(s):  
Can Chen ◽  
Weiliang Jin ◽  
Hangjie Ding ◽  
Yuxi Zhao ◽  
P.A. Muhammed Basheer ◽  
...  
Keyword(s):  
Experimental Research ◽  
Concrete Strength ◽  
Strength Prediction

Experimental research on remote real-time monitoring of concrete strength for highrise building machine during construction

Measurement ◽  
2021 ◽  
Vol 178 ◽  
pp. 109430
Author(s):  
Zibo Zuo ◽  
Yulin Huang ◽  
Xi Pan ◽  
Yijian Zhan ◽  
Longlong Zhang ◽  
...  
Keyword(s):  
Real Time ◽  
Experimental Research ◽  
Concrete Strength ◽  
Real Time Monitoring

Experimental Research on Factors Affecting Factors of Concrete Strength in Corrosion and Expanding Areas at Initial Stages of Reinforcement

2014 ◽  
Vol 1065-1069 ◽  
pp. 1174-1180
Author(s):  
Xi De Zhang ◽  
Zhen Zhou ◽  
Guo Zhu Li
Keyword(s):  
Experimental Research ◽  
Concrete Strength ◽  
Steel Corrosion ◽  
Concrete Cover ◽  
Reinforcement Corrosion ◽  
Affecting Factors ◽  
Factors Affecting

This studypaper analyzed the affecting factors affecting of strength of concrete in corrosion and expanding areas at initial stages of reinforcement corrosion by experimental resultss, and researched the transformation trend of experimental factors by difference analyzing in statistics. The results showed that the expanding force after steel corrosion remarkably influenceds the strength of concrete. At the same time, the reinforcement diameter and thickness of concrete cover also had clear influence on concrete strength when rust occurroccurrenceed. Therefore, when studying the influence of corrosion and expanding force on concrete strength, we should not only research the influence of reinforcement corrosion magnitude, but also consider other effects, such as steel diameter, thickness of concrete cover should be considered.

Experimental Research on Failure Mechanism of a CVI-Fabricated Ceramic Matrix Composite under Compression

2006 ◽  
Vol 326-328 ◽  
pp. 1841-1844 ◽  
Author(s):  
Guo Yang Guan ◽  
Gui Qiong Jiao ◽  
Tao Huang
Keyword(s):  
Failure Mechanism ◽  
Experimental Research ◽  
Fracture Mechanism ◽  
Failure Modes ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix ◽  
Mechanical Tests ◽  
Strength Prediction ◽  
Compressive Behavior ◽  
Linear Feature

Mechanical tests have been conducted to understand compressive behavior of a plain weave C/SiC composite, especially to investigate the failure mechanism. The stress-strain curves of this composite show linear feature in compression. The specimens fail along a flat plane 13°~15° to the weave plane, running across four typical regions in the bulk: weft bundle, warp/weft interface, warp bundle, and inter-ply. According to the observed fracture route, four basic failure modes are schematically presented. Cracks form and develop in these areas along fiber/matrix interphase or within matrix, depending on the strength competition between interphase and matrix. The fracture mechanism reveals dependence of compress strength on matrix abundance between and within bundles. Based on the failure modes new method for compress strength prediction can be further investigated.

scholarly journals Experimental research on drying control condition with minimal effect on concrete strength

2017 ◽  
Vol 135 ◽  
pp. 194-202 ◽  
Author(s):  
Guohui Zhang ◽  
Zongli Li ◽  
Linfei Zhang ◽  
Yujuan Shang ◽  
Hang Wang
Keyword(s):  
Experimental Research ◽  
Concrete Strength ◽  
Minimal Effect

scholarly journals Refined strength prediction of concrete 2D bottle-shaped struts

2021 ◽  
Vol 4 (2) ◽  
pp. 111-125
Author(s):  
Abdelrazek E. Ebrahim ◽  
Omar M. Elmeligy ◽  
Salah E. El-Metwally ◽  
Mashhour A. Ghoneim ◽  
Hamed S. Askar
Keyword(s):  
Concrete Strength ◽  
High Strength ◽  
Experimental Tests ◽  
Strength Prediction ◽  
Width Ratio ◽  
Element Analysis ◽  
Minimum Reinforcement ◽  
Strength Concrete ◽  
Bearing Plate ◽  
Effectiveness Factors

For better strength prediction using strut-and-tie models (STM), it is essential to use reliable strength parameters of the model components; e.g., struts, ties, and nodes. Among all the elements of the STM, the strength of the bottle-shaped struts is not well quantified. The purpose of this study is to develop more accurate formulas for the calculation of the effectiveness factors for 2D bottle-shaped struts, that are unreinforced, reinforced with minimum reinforcement, and reinforced with sufficient transverse reinforcement. The nonlinear finite element analysis, with the aid of the software ABAQUS, has been utilized in this study, which has been verified against experimental tests. The study has been carried out for grades of concrete varying from 20 to 100MPa, and for bearing plate to width ratio varying from 0.1 to 0.9. The obtained formulas for the effectiveness factors of bottle-shaped struts are functions of the concrete strength, which is not the case with the ACI 318-19 provisions. These formulas have been verified against experimental tests and have been compared with the ACI 318-19 provisions. The predictions based on these formulas are more accurate than those based on the ACI 318-19 provisions. Also, the results from these formulas are always on the safe side. On the other hand, the ACI 318-19 provisions lead to unsafe results in the case of high-strength concrete and very conservative results for the case of unreinforced struts from normal-strength concrete.

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