CAJ | 학술논문

针对掺高效减水剂导致早期混凝土自收缩增大，收缩时间提前等问题，提出一种掺加减缩剂的方式。采用立杆式收缩测量方法，对两种不同减缩剂进行干缩试验，从而得到效果比较明显、混凝土力学性能得到明显改善的一种复合外加剂材料。通过试验研究表明，减缩剂 B-SAR 较减缩剂 D-SAR 对混凝土在抗压、抗折、收缩率方面要明显具有优势，并确定缩减剂 B 的最佳掺加量。
침대참고효감수제도치조기혼응토자수축증대，수축시간제전등문제，제출일충참가감축제적방식。채용립간식수축측량방법，대량충불동감축제진행간축시험，종이득도효과비교명현、혼응토역학성능득도명현개선적일충복합외가제재료。통과시험연구표명，감축제 B-SAR 교감축제 D-SAR 대혼응토재항압、항절、수축솔방면요명현구유우세，병학정축감제 B 적최가참가량。
Aiming at the problems of early concrete self shrinkage and shrinking in advance, a new method of adding shrinkage-reducing agent was put forward. The vertical rod type shrinkage measurement method was used to carry out the shrinkage test of two different shrinkage reducing agents, so as to get a composite additive material which can obviously improve the mechanical properties of concrete. The results show that the shrinkage reducing agent B-SAR is better than shrinkage reducing agent D-SAR in the compressive strength, flexural strength and shrinkage ratio of concrete,and the best adding amount of the shrinkage reducing agent B has been determined.