CAJ | 학술논문

在聚羧酸系高效减水剂中复配消泡剂，探讨了消泡剂掺量对砂浆性能的影响。结果表明：当基准砂浆加入消泡剂时，基准砂浆的含气量大幅度降低；砂浆处于高流动度状态时，增加消泡剂掺量，砂浆的流动度逐渐增大、含气量逐渐降低且最终趋于稳定、黏度逐渐降低、屈服应力呈现先减后增的趋势，当消泡剂掺量为0.5g时，屈服应力达到最小；固定配比时，增加水胶比，砂浆含气量呈现升高的趋势。
재취최산계고효감수제중복배소포제，탐토료소포제참량대사장성능적영향。결과표명：당기준사장가입소포제시，기준사장적함기량대폭도강저；사장처우고류동도상태시，증가소포제참량，사장적류동도축점증대、함기량축점강저차최종추우은정、점도축점강저、굴복응력정현선감후증적추세，당소포제참량위0.5g시，굴복응력체도최소；고정배비시，증가수효비，사장함기량정현승고적추세。
Effects of defoamer dosage on properties of mortars were investigated by adding defoamers into the polycar-boxylate superplasticizer. The experimental results show that: when adding defoamer in the reference mortar, the air con-tent of the mortar could decrease sharply; when the mortar is in a high state of fluidity, with the increase of defoamer dosage, the fluidity of mortar increases gradually, the air content of mortar reduces gradually and eventually tends to stabi-lize, the viscosity of mortars could reduce gradually, and the yield stress of mortar presents a trend of decreasing at first and then raising, when the defoamer dosage is 0.5g, the yield stress of mortar reaches a minimum value;when the W/B in-creases, the air content of mortar tends to increase at a fixed mix proportion.