采用丁苯乳液、苯丙乳液、硅灰、粉煤灰和橡胶粉等外加剂分别对物理发泡水泥混凝土的性能进行单一和复合改进试验.结果表明,复掺硅灰和丁苯乳液可显著提高泡沫混凝土早期强度,并降低吸水率,改善混凝土性能,当硅灰掺量4％,丁苯乳液掺量12％时,混凝土吸水率降低17％,7 d抗压强度增加0．5 MPa；丁苯乳液对降低泡沫混凝土吸水率有一定促进作用；苯丙乳液对混凝土强度影响较大；硅灰与粉煤灰降低吸水率效果不佳；橡胶粉不能作为混凝土外加改性材料.
Made experiment to promote the performance of foam concrete by adding SBR,SAE,silica fume,fly ash,and rubber powder to the foam concrete respectively and simultaneously.The results show that,add silica fume and SBR to foam concrete simultaneously can improve early strength significantly and reduce water ab-sorption,while adding 4wt% silica fume and 12wt% SBR to foam concrete,the water absorption of concrete re-duced by 17%,7 day strength increased 0.5 MPa.SBR had a limited role in promoting the early strength of foam concrete,SAE had difference on the strength of concrete,silica fume and fly ash increased water absorp-tion,crumb rubber could not be used as the modified material of concrete.
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