Evaluation of Relations among Basic Mechanical Properties of Concrete with Machine-Made Sand

Abstract:

Due to many different characteristics such as irregular polygon particle with pointed edges, rough surface and larger content of stone powder, machine-made sand has ignorable effects on the properties of concrete. As the basis for the design of concrete structures, the relations among the basic mechanical properties of concrete such as compressive strength, tensile strength, flexural strength and elastic modulus should be clearly understood. This paper summarizes the test data from the published references, and discusses the relations among these properties by statistical analyses compared with those of ordinary concrete. The results show that the axial compressive strength and the tensile strength can be prospected by the same formulas of ordinary concrete specified in current Chinese design code, but the prospected tensile strength should multiply a reducing coefficient when the strength grade of concrete is lower than C30. The elastic modulus of concrete with machine-made sand is larger than that of ordinary concrete, which should be prospect by the formula in this paper. Meanwhile, the formula of flexural strength is suggested.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 441-444
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.441
• Online since: December 2011
• Authors: Feng Lan Li, Yan Zeng, Chang Yong Li
• Keywords: Compressive Strength, Concrete, Elastic Modulus, Flexural Strength, Machine-Made Sand, Relation, Tensile Strength

References

[1] S. Zhao: Design Principles of Concrete Structures, Tongji University Press, Shanghai, 2004.

[2] S. Zhao: Design Principles of Concrete Structures, Tongji University Press, Shanghai, 2004.

[3] H. He and Q. Yao: Chongqing Architecture, No. 8 (2006), pp.53-55.

[4] Z. Cao and J. Yang: Concrete, No. 6 (2010), pp.101-103.

[5] M. Wu, Z. Fu, T. Li and D. Wang: Railway Construction Technology, No. 4 (2000), pp.46-49.

[6] X. Chen: Building Construction, No. 3 (2002), pp.232-233.

[7] X. Li: Shanxi Building, No. 8 (2005), pp.112-113.

[8] F. Li, Q. Zhu and K. Gao: Water Power, No. 5 (2010), pp.79-81.

[9] F. Li, Q. Zhu and Y. Xu: Concrete, No. 2 (2010), pp.84-86.

[10] F. Li, Q. Zhu and Y. Xu: Water Resources and Hydropower Engineering, No. 7 (2010), pp.76-78.

[11] Q. Zhu: Experimental Study on Mechanical Properties of Concrete with Stone-crushed Proto-machine-made Sand, Thesis for Master Degree of North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou, 2011.

[12] K. Tan: Sichuan Water Power, No. 3 (1998), P. 43-45.

[13] W. Lu: Shanxi Hydrotechnics, No. 4 (2000), pp.63-67.

[14] X. Huang and Z. Han: Water Power, No.1 (1995), pp.32-35.

[15] Y. Wang: Research on the Low-strength Pump Concrete with MFA of High AMF Contents, Thesis for Ph.D Degree of Wuhan University of Technology, Wuhan, 2007.

[16] J. Cai: Research of Effects and Mechanism of Micro-fines on Manufactured Fine Aggregate Concrete, Thesis for Ph.D Degree of Wuhan University of Technology, Wuhan, 2006.