大粒径再生粗骨料对预拌混凝土性能影响的研究

Study on the Effect of Large Particle Size Recycled Coarse Aggregate on the Properties of Ready-Mixed Concrete

摘要: 本文通过大粒径再生粗骨料对预拌混凝土性能影响的研究，采用混凝土搅拌站使用最多的C30泵送配合比，掺加不同比例大粒径再生粗骨料，大粒径再生粗骨料级配应用为16~31.5 mm连续级配，找出大粒径再生粗骨料混凝土最佳掺量，并分析大粒径再生粗骨料对预拌混凝土用水量、含气量、强度、和易性产生的影响，并在大粒径再生粗骨料界面未加强的情况下，更好的使用大粒径再生粗骨料应用于预拌混凝土。

Abstract: This paper studies the effect of large particle size recycled coarse aggregate on the performance of ready-mixed concrete, adopt C30 pumping mix proportion which is most used in concrete mixing plant, adding different proportions of large particle size recycled coarse aggregate, the grading of large-size recycled coarse aggregate shall be 16~31.5 mm continuous grading, find out the best content of recycled coarse aggregate concrete with large particle size, the influence of large-size recycled coarse aggregate on water consumption, air content, strength and workability of ready mixed concrete is analyzed, and when the interface of large particle size recycled coarse aggregate is not strengthened, better use of large particle size recycled coarse aggregate for ready-mixed concrete.