摘要
为获得细骨料品质对自密实混凝土工作性能与强度的影响规律,本文进行了砂率、不同细度模数细骨料对自密实混凝土性能影响试验研究。研究结果表明,砂率存在最优值,最优砂率时,混凝土的工作性与强度均达到最佳;细骨料品质对自密实混凝土的工作性影响较大,好级配的机制砂工作性最好,河砂工作性也可以,但低品质机制砂严重影响到了自密实混凝土的工作性;细骨料品质对抗压强度有一定的影响。
To obtain the rule of fine aggregate quality to the workability and strength of self-compacting concrete,the influence of sand rate and different fineness modulus fine aggregate on the performance of self-compacting concrete were studied.The results show that the concrete workability and strength are the best with the optimal sand rate.Moreover,the quality of fine aggregate has a greater influence on the workability of self-compacting concrete,which is,the mechanism of good gradation has the best workability,and river sand has a better workability,in addition,the compressive strength of fine aggregate quality has a certain influence.
作者
包丽丽
BAO Lili(Heilongjiang Erjian Construction Engineering Co.,Ltd.,Harbin 150080,China)
出处
《低温建筑技术》
2020年第7期62-64,87,共4页
Low Temperature Architecture Technology
关键词
细骨料
自密实混凝土
工作性
抗压强度
fine aggregate
self-compacting concrete
workability
compressive strength
