Abstract
To improve the weak mechanical properties of the foamed concrete that resulted from a large number of pores, a plant fiber is used as fill with the matrix. In this study, five contents of sisal fiber are added into the foamed concrete to investigate the static and fatigue performance of composites. The static and fatigue experimental results show that the sisal fiber can improve the mechanical properties of the foamed concrete. When the content of sisal fiber is less than 0.15%, the higher the content of sisal fiber, the greater the bending strength and fatigue life of the foamed concrete. In contrast, if the sisal fiber content is larger than 0.15%, the bending strength and fatigue life decrease with the increasing fiber content. From the regression analyses, the results show that the double linear relationships exist not only between the sisal fiber content and the flexural strength, but also between the sisal fiber content and the fatigue life of the foamed concrete. In this study, the optimal content of sisal fiber mixed in the foamed concrete can be inferred to be 0.133%.
Highlights
IntroductionFor the excellent physical properties, the foamed concrete is extensively used in civil engineering
For the excellent physical properties, the foamed concrete is extensively used in civil engineering.In 1923, a swede Axel Eriksson achieved the first patent related to the foamed concrete [1]
To enhance the low strength and the low toughness of the foamed concrete, sisal fibers with five contents of 0.05%, 0.10%, 0.15%, 0.20%, and 0.30% have been added into the matrix to strengthen the mechanical properties of the foamed concrete
Summary
For the excellent physical properties, the foamed concrete is extensively used in civil engineering. In 1923, a swede Axel Eriksson achieved the first patent related to the foamed concrete [1]. The foamed concrete research had been greatly developed. In 1996, the work of the foamed concrete in bridge construction is conducted by Pickford C. et al [2]. In 1998, the light weight foamed concrete was investigated by Byun K.J. et al [3] when polymer foam agent was used. The applications of the foamed concrete are still conducted, such as the low density foamed concrete used in filling engineering, the high density foamed concrete is used in insulated structures The applications of the foamed concrete are still conducted, such as the low density foamed concrete used in filling engineering, the high density foamed concrete is used in insulated structures (Ramamurthy K. [4])
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