Abstract
Lightweight glass fiber reinforced cement (LWGRC) with good thermal insulation can be produced by using expanded polystyrene (EPS) particles. In this study, the influence of EPS and glass fiber on the modulus of rupture (MOR) and toughness of GRC was investigated. The fiber mass fraction is 0% ~ 3.6%, and the EPS volume fraction is 0% ~ 36%. No matter how much glass fiber is, the relative MOR has the same proportional relationship with the relative density of LWGRC. The empirical formula based on power function can well show the relationship between relative MOR and relative density. The higher the content of EPS, the more obvious the plastic characteristics of LWGRC. When the content of EPS is in a range of 0% to 18% (by volume), the fracture energy of LWGRC increases with the increase of glass fiber content. When the content of EPS is in the range of 27% to 36% (by volume), the fracture energy of LWGRC with 2.4% (by mass) fiber is higher. Too high or too low content of glass fiber is harmful to the fracture energy of LWGRC.
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