再生骨料对高性能混凝土性能的影响研究

Study on the Impact of High Performance Concrete's Performance with Recycled Concrete Aggregate

主要研究再生粗骨料与再生细骨料的组合在高性能混凝土中的作用。分别用20%的再生粗骨料(CRCA)、20%的再生细骨料(FRCA)和20%的再生粗细骨料组合代替天然粗骨料(NCA)与天然细骨料(NFA)后,评价混凝土和易性、抗压强度和耐久性能。实验结果表明,再生骨料替代20%的天然骨料后,混凝土拌合物的流动性和混凝土试件抗压强度都有提高。再生粗、细骨料组合后替代天然粗、细骨料后,混凝土的抗硫酸盐侵蚀性也有着较好的改善。

This experimental study mainly studies the function of Coarse Recycled Concrete Aggregate(CRCA)and Fine Recycled Concrete Aggregate(FRCA)in high performance concrete.Evaluate the workability,compressive strength and durability of concrete after using 20%CRCA,20%FRCA and both instead of NCA and NFA.The experimental results show that the fluidity of concrete mixture and the compressive strength of concrete specimens are improved.When the CRCA and FRCA are replaced by NCA and NFA,the sulfate resistance of concrete is also improved.