低碱度钢渣基油井及地热井胶凝材料的研究——Ⅲ富镁低碱度钢渣的水热反应

STUDY OF LOW-ALKALINITY STEEL SLAG BLENDED OIL WELL CEMENT AND EGOTHERMAL CEMENT-Ⅲ HYDROTHERMAL REACTION OF HIGH-MgO LOW-ALKA LINITY STELL SLAG

通过研究富镁低碱度钢渣的水热反应得出 :富镁低碱度钢渣具有水热活性 ,水热条件下形成具有胶凝性的富镁水化硅酸钙产物。钢渣中CMS、C3MS2 的水热活性高于纯CMS、C3MS2 的水热活性。Mg2 +优先固溶于水化硅酸钙中 ,其余部分根据水热温度不同而形成Mg(OH) 2

Via studying hydrothermal reaction of high-MgO low-alkalinity steel slag, the results indicate, high-MgO low-alkalinity steel slag formed Mg-rich calcium silicate which has cementitious characteristics hydrates under hydrothermal condition, so we can conclude it has hydrothermal activity. The results also indicate the hydrothermal activity of CMS、C 3MS 2 in steel slag is higher than that of pure CMS、C 3MS 2 Mg 2+ substitute in calcium silicate hydrates first, then according to the hydrothermal temperature, the surplus Mg 2+ formed Mg(OH) 2 or chrysolite.