养护制度对加气混凝土抗压强度的影响及其机理研究

摘要

本文研究了不同养护制度下加气混凝土抗压强度的变化。研究结果表明，蒸压养护有利于提高加气混凝土的抗压强度。本文利用 XRD 和扫描电镜对加气混凝土的水化产物进行了研究。分析结果表明，在蒸压养护下，水化产物的组成和形貌都发生了变化，水化产物主要是托勃莫来石，并且随着蒸压时间的增加，托勃莫来石的尺寸减小，晶体形貌由草叶状向针片状转变。%This paper studies changes of compressive strength of aerated concrete under different curing systems. Al results of the research show that the autoclave curing wil help improve the compressive strength of aerated concrete. In this paper, XRD and SEM were employed to study the hydration products of aerated concrete. The results show that under the autoclave curing, the composition and morphology of the hydration products have changed, hydration products are mainly tobermorite. It also shows that with the increase of autoclave curing time increasing, the grain size of tobermorite reduces, and its morphology changes from grass-like crystal to flakiness crystal.