Study on the Variability of the Surface Flexural Strength of Hardened Concrete in Laboratory

Abstract:

he experimentation was to study the effect to cement concrete surface flexural strength by simulating the different natures and thickness of cement mortar, The slump was defined as 20mm and 70mm, on behalf of the low plasticity of concrete and plastic concrete, the three conditions of the surface mortar thickness 25mm, 15mm and 5mm was to simulate the different thickness of mortar extracted during concrete construction,which adopted three different mortar ratio and mortar consistency, the concrete specimens with the 150*150*550mm steel mould were made from concrete and the surface layer of mortar,the specimen surface as a curved flat was to determine the surface flexural tensile strength.The results show that: the surface flexural strength of concrete is affected by the components,natures and thickness of cement mortar, the higher the surface mortar strength is, the higher concrete surface bending strength is.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 1858-1861
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.1858
• Online since: December 2012
• Authors: Ai Jun Yue, Jun Lin Liang, Jian Long Zheng
• Keywords: Flexural Strength, Hardened Concrete, Pouring Surface, Surface, Variability

References

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