将活性氧化镁均匀分散于无机聚合物浆体中，以期快速、均匀补偿收缩． 研究了掺活性氧化镁的无机聚合物浆体的形变、力学性能、结构与组成． 结果表明: 活性氧化镁掺量为6%时，无机聚合物浆体的28 d 化学收缩降低10． 7%，7 d 自收缩降低72． 1%，28 d 干燥收缩降低20． 0%，有效补偿了无机聚合物硬化过程中的体积收缩． 颗粒细小的活性氧化镁在高碱度液相环境中与水反应生成晶体细小的蠕虫状Mg( OH)₂，在无机聚合物浆体中产生均匀微膨胀，细化了浆体孔径，并提高了无机聚合物的强度，实现了无机聚合物浆体收缩和氧化镁补偿收缩历程的匹配．

In order to compensate the shrinkage of inorganic polymer pastes uniformly and quickly,reactive MgO powders were evenly dispersed in the inorganic polymer pastes,and the deformation,mechanical property,microstructure and component of the inorganic polymer pastes doped with the reactive MgO were investigated.The results indicate that,when the dosage of the reactive MgO is 6%,the chemical shrinkage,autogenous shrinkage and drying shrinkage of the inorganic polymer pastes decrease respectively by 10. 7% at 28d,72. 1% at 7d and 20. 0% at 28 d,which means that the shrinkage of the inorganic polymer pastes in a hardening process is effectively compensated by the reactive MgO,In addition,after the reaction of the reactive MgO with the water in a high-alkalinity liquid-phase environment,fine wormlike Mg( OH) ₂ crystal forms and causes a uniform expansion in the inorganic polymer pastes,which refines the pore size of the inorganic polymer pastes and enhances their compressive strength,so that the compensation of the reactive MgO for the shrinkage of the inorganic polymer pastes is accomplished.