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１前言随着材料科学的发展，目前人们广泛采用不同性质的外加剂单掺或复合掺加到混凝土中以改善其性能或在一定的基础上赋予混凝土某种特殊的性能，工程中已广泛采用了这样配制的高性能混凝土或特种混凝土。混凝土膨胀剂由于其具有独特的抗裂抗渗的优点，也已受到各国工程...
1 Introduction With the development of materials science, people now widely use different types of admixtures to add concrete to the concrete to improve its performance or to give concrete a certain special performance based on a certain degree. It has been widely used in engineering. The high-performance concrete or special concrete thus prepared. Due to its unique anti-crack and anti-permeability advantages, concrete expansive agents have also been subjected to projects in various countries...