Study on Strength and Velocity of Longitudinal Wave of Low-Strength Concrete

Abstract:

A new kind of low-strength concrete is suggested to fill big caves to protect environment and ecosystem. The low-strength concrete have been studied regarding strength, wave propagation, water content, porosity, composition and cemented material by press experiments and sound wave analysis and shear tests. Those results show that: (1) the mechanical characteristics of low-strength concrete is complex; (2) strength of the low-strength concrete comes from interlocking of large-size crushed stones and bond of cement particle; (3) water content has significant effect (more than 30 percent) on velocity of longitudinal wave of the low-strength concrete and has little effect on strength; while effect of porosity of concrete on strength are more than 30 percent; (4) strength of low-strength concrete are controlled by both the content of crust stones and content of cement and a relationship of strength and velocity of longitudinal wave is proposed.

• Periodical: Key Engineering Materials (Volumes 302-303)
• Pages: 451-456
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.302-303.451
• Online since: January 2006
• Authors: Wen Hua Chen
• Keywords: Low-Strength Concrete, Strength, Stress Wave

References

[1] LI ZaoDian: Test study on effect of water of inter-space of rock to ultrasonic[J], Chinese Geo-technology 1987 Vol6(4), pp.35-38.

[2] Tong ShouXing: Study on strength of high-strength concrete using extra-wave technology [J], Non-destructive Test, 1994(1), pp.7-8.

[3] Chen WenHua: Strength of low-strength crushed-stones concrete[R], National Technology Research Eighth-Five-Plan, Guang Zhou, 1996(85-106-01-02-03-X).

[4] Cui GuangXin: Modeling test and theory of conform[M], Published in University of Mine of China , Beijing, (1990).