中文摘要：

针对混凝土开裂的原因。研究了一种GT混凝土抗裂剂，以达到改善混凝土的抗裂性能同时避免或减轻混凝土开裂的目的．GT抗裂剂是由CSA高效膨胀剂与聚合物按一定比例复合而成的．研究了掺加GT高效抗裂剂胶砂试件的力学性、胀缩性等与抗裂相关的性能．结果表明，GT抗裂剂是一种比较理想的抗裂材料。对抑制砂浆开裂效果显著．

英文摘要：

Allusion to the crack of concrete, the authors studied on GT anti-cracking agent to improve the character of anti-cracking or release the crack of the concrete. GT anti-cracking agent is a novel concrete anticracking agent made of CSA high efficiency expansive agent and polymer at a certain ratio. Experiments have been done to investigate the anti-cracking related properties such as the mechanical properties, shrinkage, expansion, early age shrinkage of the mortar specimens with the addition of GT anti-cracking agent. The results demonstrat that GT anti-cracking agent is an optimistic anti-cracking material and has a remarkable effect on suooressing the cracks of cement mortar.