摘要
本文对桥面铺装混凝土早期裂缝产生的原因进行了理论分析，并根据分析结果，采用混凝土温度应力试验机在优选骨料的基础上对掺加不同掺和料、膨胀剂和聚丙烯纤维的混凝土早期裂缝进行了试验研究，通过对试验过程的对比分析，阐明混凝土成分对早期裂缝的影响，其中膨胀能转化为膨胀变形和掺粉煤灰和聚丙烯纤维，可使应力储备大，裂缝温度降低，综合抗裂性能增强。提出了改进控制桥面铺装混凝土早期裂缝的设计和施工方法。
the concrete early ages cracking for bridge spreadingConcrete,and according to analyse result,adopt concrete TSTM test study of concrete with mixing variable pozzolanic binder, expansive agent and polypropylene fiber,by parallelWith analysis for excellent aggregate,illuminate concrete component about early ages cracking affect,and expand can translate into expand distortion and mixing polypropylene fiber,it can increase strees, reduce cracking temperature,colligate resistance cracking Capability gather head. Bring forward improve on design and construction method for the concrete early ages cracking for bridge spreading,
