摘要
利用机制砂部分或全部取代河砂作为细集料配制混凝土,通过开展混凝土力学性能和徐变试验,研究了混合砂中石粉含量对各组混凝土的抗压强度、抗折强度、弹性模量以及徐变度的影响。结果表明:混凝土强度、弹性模量均随着混合砂中石粉含量的增加先增大后减小,石粉含量为5%时,上述力学性能最优;混合砂中石粉含量在7%以内时,随着石粉含量的增加,混凝土徐变度随之增大。
Using the manufactured sand partially or wholely replaced the river sand as fine aggregate mixed concrete, through the concrete mechanical properties and creep tests, this paper studied the influence of stone powder content in the mixed sand on the concrete compressive strength, flexural strength, elastic modulus and the degree of creep in each group.
出处
《山西交通科技》
2017年第5期15-17,共3页
Shanxi Science & Technology of Transportation
关键词
机制砂
石粉
力学性能
徐变度
manufactured sand
stone powder
mechanical performance
creep degree
