Experimental study on the effect of basalt fiber reinforced expanded polystyrene foams on the compressive strength of lightweight concrete
Zheng Cao,
Tao Jiang,
Ying Wang,
Erke Wang,
Lixue Xiang,
Bo Tang,
Xinfeng Wu,
Wei Shao,
Wenge Li,
Kai Sun,
Danda Shi
Affiliations
Zheng Cao
Tao Jiang
Shanghai Key Laboratory of Engineering Materials Application and Evaluation, China Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China
Ying Wang
Shanghai Key Laboratory of Engineering Materials Application and Evaluation, China Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China
Erke Wang
Hangzhou Vulcan New Materials Technology Co., Ltd, Hangzhou 311255, China
Lixue Xiang
Hangzhou Vulcan New Materials Technology Co., Ltd, Hangzhou 311255, China
Bo Tang
Hangzhou Vulcan New Materials Technology Co., Ltd, Hangzhou 311255, China
Xinfeng Wu
Shanghai Key Laboratory of Engineering Materials Application and Evaluation, China Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China
Wei Shao
Merchant Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
Wenge Li
Merchant Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
Kai Sun
Merchant Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
Danda Shi
Merchant Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
Reducing the structural load and operational energy consumption of buildings is a trend in the development of the construction industry, and lightweight concrete has become a research hotspot because of its dual characteristics of low density and high strength. In this paper, a three-step method is used to prepare lightweight concrete composites. In the first step, basalt fiber powder was adhered to polystyrene foam ball expanded polystyrene spheres (EPSs) by the “ball rolling method” to obtain basalt fiber reinforced epoxy composite balls. In the second step, the epoxy resin composite ball and the configured cement matrix are filled into a prefabricated mold. Finally, the lightweight concrete specimens were overlaid, pressed into shape, and cured for 28 days. By changing the volume ratio, size, and wall thickness of the epoxy composite balls, as well as the length and content of basalt fibers, the lightweight concrete was exhibited a reduction in density and increase in strength. The results showed that the smaller the epoxy composite spheres and the larger the wall thickness are, the higher the compressive strength of the material for a certain volume ratio of epoxy composite spheres will be. The addition of appropriate hollow glass beads can reduce the number of pores in the matrix, but excessive hollow glass beads will reduce the bonding force of the concrete matrix. Basalt fibers not only improve the strength of EPSs but also serve to connect matrix–matrix and matrix–epoxy composite spheres.
