An Experimental Study On Mechanical Properties & Development Of M50 Grade Self Compacting Concrete (SCC) & Comparison With M50 Conventional Concrete

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Chengzhi Wang ◽  
Xin Liu ◽  
Wei Liu ◽  
Zhiming Li

In the water resources allocation project in Pearl River Delta, in order to optimize the structural design, the deep buried tunnel adopts the composite lining structure. However, the weakest link in a complex structure is the connection between two different interfaces. This paper reports the findings of an experimental study that was undertaken to investigate the interface mechanical performance of steel self-compacting concrete composite structure subjected to cyclic loads. In this study, different shear connectors are considered, and six different specimens were designed and tested, respectively. The test is used to research the effect of the different shear connectors on the bearing capacity and interface mechanical properties of composite structure in an experimental study. According to these test results, a detailed analysis was carried out on the relationships, such as the stress-strain and load-displacement relationships for the specimen. These tests show that the shear connectors will significantly enhance the bearing capacity and interface mechanical properties of the composite structure. Among them, the comprehensive performance of the specimens using the stud-longitudinal ribs shear connectors is the best. Additionally, a finite element analysis (FEA) model was developed. The comparison of the simulation results with the experimental results shows that this FEA is applicable for this type of experiment.


2018 ◽  
Vol 7 (3.12) ◽  
pp. 955
Author(s):  
Aluri Bhavana ◽  
M L. Sai Rangarao

To diminish the effect on condition and impact of soil disintegration the lathe waste or steel scrap i.e. machine squander, which is acquired from mechanical machines, can be utilized as reusing material in the concrete blend. This project emphasizes the study on self-compacting concrete (SCC) and conventional concrete (CC) with the addition of machine squander. The investigation is done with and without the addition of steel scrap in conventional and self-compacting concrete. The optimal content of steel scrap is utilized out of 1%, 2%, and 3%. Multiple trail mixes were carried out to find out the optimal content of steel scrap. The fresh and hardened properties of concrete are resolved. The test completed determining flow properties of SCC are Slump, L-box, V-funnel tests.  The flexural, compressive and split tensile strengths of concrete were resolved. A total 8 beam specimens were cast and tested under simply supported condition. Deformational behavior was compared between conventional concrete, beam specimens to SCC concrete beam specimens.  


Author(s):  
Ben Ngene ◽  
Gideon Bamigboye ◽  
Chidiebere Agomo ◽  
Kenechukwu Eneh ◽  
Olayinka Olajide

The impact of magnetized water on the strength properties of concrete calls for a holistic appraisal of its effect on the environment of production and use. In this study, the influence of the Magnetic Field Treated Water (MFTW) on the strength of concrete produced under various environments is considered. The work considered three environments of use of magnetized water in concrete with respect to partial replacement of fine aggregate with waste glass; quality of curing medium on mechanical properties of concrete and effect on the mechanical properties of self-compacting concrete. The three scenarios presented involved preparing and testing concrete cubes made with magnetized water, cement, fine (sand and glass) and coarse (granite) aggregates at various levels of combination and environment of curing. The concrete cubes were cured for 7, 14, 28, and 56 days and the strength and other parameters, such as slump and workability, were compared with conventional concrete in normal environment. It was observed that concrete under self-compacting concrete made with MFTW had a 9.1% increase in compressive strength than normal; for concrete made with clay brick powder and MFTW, both the workability and compressive strength was higher than normal. The magnetized water in concrete with waste glass as partial replacement had higher slump value and 24% increase in compressive strength than conventional concrete. MFTW therefore improves strength development of concrete.


2011 ◽  
Vol 250-253 ◽  
pp. 3475-3478
Author(s):  
Mei Xiong

Dry-mixing self-compacting concrete (DSCC) is a kind of new concrete composite materialswhich based on self-compacting concrete vibration. DSCC was prepared with the cement, the coarse aggregate and sand of high strength and some cement replacement materials that had the better crack resistance. And it has the characteristics of filling performance, gap trafficability and anti- segregating like self-compacting concrete. The paper study on the basic mechanical properties and anti-carbonization ability of DSCC through concrete performance test, the results indicate that the basic mechanical properties and durability of DSCC better significantly than common concrete materials.


2010 ◽  
Vol 168-170 ◽  
pp. 1289-1294
Author(s):  
Pei Xiang He ◽  
Xiu Shi Wang ◽  
Jian Guo Wang

This paper evaluates mainly the dry-mixed self-compacting concrete (DSCC) based on the experimental study. The study analyzes mechanical properties of DSCC at the hardened condition, which has been conducted as follows: compressive strength and split tensile strength with elapsed age as well as size effect of strength. Rate of gain in strength at different periods of curing such as 1day, 3days, 7days, 14days and 28days are studied for different DSCC mixes and suitable relations have been established for the gain in strength at the early ages. Relations have also been formulated for compressive strength and split tensile strength for DSCC mixes. Size effect of compressive strength and structural efficiency have been evaluated, all at cured after 28 days.


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