玻璃纤维和膨胀剂增强混凝土轴压性能试验研究

Experimental Study on Compression Performance of Glass Fibers and Expansive Agents Reinforced Concrete

海水海砂混凝土的开发与应用可有效降低生产混凝土的自然资源利用,从而保护生态环境。添加玻璃纤维和膨胀剂可以通过控制裂纹发展和降低孔隙率来提高混凝土的韧性和密实度。本文以玻璃纤维和膨胀剂掺量为控制变量,设计了7组混凝土配合比,对玻璃纤维和膨胀剂增强海水海砂混凝土的轴压性能进行了研究。研究发现,混凝土的破坏形态与玻璃纤维和膨胀剂掺量相关性较大。玻璃纤维和膨胀剂的掺入能提高海水海砂混凝土的抗压强度,提升幅度在4%~7%之间。此外,玻璃纤维和膨胀剂的掺入对海水海砂混凝土的弹性模量没有明显的影响。

The development and application of seawater sea-sand concrete can effectively reduce the utilization of natural resources for producing concrete,thereby protecting ecological environments.Adding glass fibers and expansion agents can improve the toughness and compactness of concrete by controlling crack development and reducing porosity.This paper took the proportions of glass fibers and expansion agents as control variables,and designed 7 groups of concrete mix proportions.The compression performance of glass fibers and expansion agents reinforced seawater sea-sand concrete was studied.Research found that the failure mode of concrete is highly correlated with the proportions of glass fibers and expansion agents.The addition of glass fibers and expansive agents can improve the compressive strength of seawater sand concrete,and the increase range was between 4%and 7%.In addition,the addition of glass fibers and expansive agents had no obvious effect on the elastic modulus of seawater sand concrete.