CAJ | 학술논문

研究几种不同的机制砂对混凝土体积稳定性的影响。结果表明：机制砂中的石粉增加混凝土的早期开裂倾向，要加强早期养护；机制砂对于混凝土的干缩具有正负效应：当石粉含量较小时，负效应占优势，干缩率随石粉含量的增加而增大；当石粉含量超过一定值时，正效应占优势，干缩率随石粉含量的增加有减小趋势。
연구궤충불동적궤제사대혼응토체적은정성적영향。결과표명：궤제사중적석분증가혼응토적조기개렬경향，요가강조기양호；궤제사대우혼응토적간축구유정부효응：당석분함량교소시，부효응점우세，간축솔수석분함량적증가이증대；당석분함량초과일정치시，정효응점우세，간축솔수석분함량적증가유감소추세。
The effects of several manufactured sands on volume stability of concrete were researched. The results show that, the tendency of early cracking of concrete is increased with the increasing of limestone powder. Early conservation is strengthened to prevent cracking. There are positive and negative effects on concrete with manufactured sand. Negative effect is dominated with less limestone powder. Positive effect is dominated with excessive limestone powder.