本文研究了在约束体内部浇注高膨胀混凝土的限制膨胀压。膨胀压随着膨胀剂含量、浇注温度、约束体的刚度和混凝土的配合比而变化。为了定量评价这些因素,提出在特定约束条件下产生设定膨胀压的高膨胀混凝土配合比设计方法。根据实验结果,测定了与实际的施工规模等同的大型构件所产生的膨胀压。同时,介绍建设省有关施工试验资料和道路高架桥的抗震补强的工程事例。 In this paper, the restricted expansion pressure of high expansive concrete poured into restraint body is studied. Expansion pressure varies with expander content, pouring temperature, restraint body stiffness, and concrete mix. In order to quantitatively evaluate these factors, a design method of mixing ratio of high expansive concrete with specified inflation pressure under certain constraints was proposed. According to the experimental results, the expansion pressure of the large-scale structure equivalent to the actual construction scale was measured. At the same time, the construction province on the construction test data and road viaduct seismic reinforcement project examples.