CAJ | 학술논문

通过单因素及耦合试验研究纳米 SiO2（NS）和纳米 CaCO3（NC）对玻化微珠保温混凝土坍落度及抗压强度的影响。 NS 以0.5%、1.0%、1.5%，NC 以0.5%、1.0%、1.5%等量代替水泥，并对混凝土坍落度及7d、28d 立方体抗压强度进行了测试。试验结果表明，S 加入可显著提高混凝土的强度，且最佳掺量为1%，但不利于混凝土的流动性；NC 的加入降低混凝土的强度，但改善了混凝土的流动性，且最佳掺量为0.5%。通过纳米矿物的合理复掺可制备出7d 和28d 立方体抗压强度分别为26.7MPa、42.4MPa，坍落度为145mm 的玻化微珠保温承重混凝土。
통과단인소급우합시험연구납미 SiO2（NS）화납미 CaCO3（NC）대파화미주보온혼응토담락도급항압강도적영향。 NS 이0.5%、1.0%、1.5%，NC 이0.5%、1.0%、1.5%등량대체수니，병대혼응토담락도급7d、28d 립방체항압강도진행료측시。시험결과표명，S 가입가현저제고혼응토적강도，차최가참량위1%，단불리우혼응토적류동성；NC 적가입강저혼응토적강도，단개선료혼응토적류동성，차최가참량위0.5%。통과납미광물적합리복참가제비출7d 화28d 립방체항압강도분별위26.7MPa、42.4MPa，담락도위145mm 적파화미주보온승중혼응토。
The effect of nano-SiO2(NS) and nano-CaCO3(NC) on the compressive strength and slump of glazed hollow bead insulation concrete was investigated by single factor test and coupling test. 0.5%、1.0%、1.5% of NS and 0.5%、1.0% 、1.5% of NC were added to partial replace cement. The slump of fresh concrete and 7d、28d cube compressive strength were tested. The test results show that adding NS can significantly increase concrete strength and the optimum content is 1%, but it is not beneficial to flowability of concrete; adding NC reduces concrete strength, but improves flowa≥bility of concrete, and the optimum content is 0.5%. Glazed hollow bead insulation concrete with 7d、28d cube compres≥sive strength of 26.7MPa、42.4MPa and slump of 145mm can be made by suitable admixtures with nano-minerals.