氯氧镁水泥混凝土路面性能试验研究

氯氧镁水泥混凝土是由轻烧氧化镁、氯化镁溶液和一些砂石反应生成的一种气硬性胶凝材料。利用镁水泥混凝土修筑示范路面,通过回弹仪、X-Ray 衍射仪(XRD)、扫描电子显微镜(SEM)检测路面的抗压强度、相组成和微观结构。结果表明：修筑示范路面早期抗压强度增加很快,三天就能通车,后期基本保持稳定。修筑路面的主要相组成为5.1.8相,不随路面使用时间的延长而变化且其具有针状结构。

study on properties of pavement builded using magnesiumoxychloride cement concrete

Magnesium Oxychloride Cement concrete can be obtained by chemical reaction of light burned magnesia, magnesium chloride and some stone, which is a air-hardening cementing material. The compressive strength, microstructure and phase composition of builded pavement were examined by rebound apparatus, x-ray diffraction(XRD) and scanning electron microscope(SEM). It can be seen that the increase of early compressive strength of pavement builded using Magnesium cement concrete is very quick, keeping trafficing after three days and the late strength almost remain stable. The main phase composition of concrete is 5.1.8 pahse, which can not change with prolonging time of builded pavement, and needlelike structure was distributed evenly on the pavement formed by magnesium oxychloride cement concrete.