通过对防裂抗渗混凝土进行的室内试验研究 ,对沉管预制混凝土的原材料选择原则、配比设计和实测进行了分析探讨。初步介绍了在沉管管节预制施工中 ,从优选原材料、优化配合比设计、改进拌合物组成、降低施工温差、减少约束、加强养护等多方面所应采取的综合工艺控制措施 ,力求对沉管预制施工有所借鉴 Through the laboratory test research on the anti-cracking and anti-seepage concrete, the principle of raw material selection, proportioning design and actual measurement of immersed pipe precast concrete are analyzed and discussed. In the process of prefabrication of sink pipe joints, the comprehensive process control measures should be preliminarily introduced in aspects of optimizing raw materials, optimizing mix design, improving the composition of mix, lowering construction temperature, reducing constraints and strengthening maintenance. Immersed pipe precast construction has reference