改性轻骨料混凝土微观作用机理与抗折强度试验研究

Experimental Study on Microcosmic Action Mechanism and Flexural Strength of Modified Lightweight Aggregate Concrete

为探索改性轻骨料混凝土抗折强度微观机理与力学效果,向混凝土中添加玄武岩纤维等添加剂进行改性,基于法国FUARY密实理论新制轻骨料混凝土,研究微观结构并进行抗折强度试验。研究发现,改性轻骨料混凝土相体形成致密的网络骨架结构,此外,其抗折强度随添加剂含量提高而提高,达到最佳掺量时抗折强度达峰值,过多的添加材料会造成混凝土抗折强度的降低。

In order to explore the micro-mechanism and mechanical effect of the flexural strength of the modified lightweight aggregate concrete,basalt fiber was added into the concrete to modify the flexural strength of the lightweight aggregate concrete.It is found that the phase structure of the modified lightweight aggregate concrete forms a dense network skeleton structure.The flexural strength of modified lightweight aggregate concrete increases with the increase of the content of additives,and reaches the peak value when the optimum content of additives is reached.