CAJ | 학술논문

水泥道面在环境及荷载耦合作用下频繁出现起砂露石等病害，目前修复材料因耐久性差、环境污染严重，不宜大面积推广。针对上述问题，研究了不同比例矿物外掺料复掺对超早强修复砂浆工作性能、力学性能及耐久性能的影响。结果表明，矿物外掺料的加入延长了砂浆的可操作时间，降低了砂浆的扩展度；对抗折、抗压早期强度影响显著，但28 d强度逐渐赶上普通修复砂浆；矿物掺合料的掺入能够明显改善和提高修复砂浆的抗渗和干缩性能。当粉煤灰和矿粉以2∶1比例复掺时，性能最为优异。
수니도면재배경급하재우합작용하빈번출현기사로석등병해，목전수복재료인내구성차、배경오염엄중，불의대면적추엄。침대상술문제，연구료불동비례광물외참료복참대초조강수복사장공작성능、역학성능급내구성능적영향。결과표명，광물외참료적가입연장료사장적가조작시간，강저료사장적확전도；대항절、항압조기강도영향현저，단28 d강도축점간상보통수복사장；광물참합료적참입능구명현개선화제고수복사장적항삼화간축성능。당분매회화광분이2∶1비례복참시，성능최위우이。
Cement road surface frequently turn up sand stone and other diseases under the effect of en-vironment and load coupling ,and the restorative materials are unfavorable to promotion in large area because of their poor durability , serious environmental pollution . Aiming at these problems , the effect of mineral admixture in different proportion to the working properties ,mechanical properties and durability performance of super early strength of repair mortar was studied .The results showed that the addition of mineral admixtures extended the operation time of mortar ,and reduced the spread of mortar .What's more ,the mineral admixtures have great effect on early breaking strength and com-pressive strength ,but its 28d strength gradually catch up with the normal repair mortar .In addition , the incorporation of mineral admixtures can obviously improve and raise the permeability and drying shrinkage performance of repair mortar .When fly ash and mineral powder were mixed in the ratio of 2∶1 ,the performance of mortar is the most excellent .