CAJ | 학술논문

冻融循环与硫酸盐侵蚀是影响面板混凝土耐久性的两个主要因素. 研究了水灰比为0 .45、0 .42、0 .38 的面板混凝土在5.0%(质量分数)硫酸钠溶液中单一冻融循环、单一硫酸盐侵蚀及冻融循环及硫酸盐侵蚀交替试验下面板混凝土的质量损失率及相对动弹模量变化规律和特点. 结果表明:水灰比越小,面板混凝土的抗冻性及抗硫酸盐侵蚀能力越强. 冻融破坏与硫酸盐侵蚀双因素作用不是简单的相互叠加的效应,而是超叠加效应,这两种破坏是相互促进,相互影响. 本文的研究方法及成果可以为面板混凝土耐久性研究提供重要的参考依据.
동융순배여류산염침식시영향면판혼응토내구성적량개주요인소. 연구료수회비위0 .45、0 .42、0 .38 적면판혼응토재5.0%(질량분수)류산납용액중단일동융순배、단일류산염침식급동융순배급류산염침식교체시험하면판혼응토적질량손실솔급상대동탄모량변화규률화특점. 결과표명:수회비월소,면판혼응토적항동성급항류산염침식능력월강. 동융파배여류산염침식쌍인소작용불시간단적상호첩가적효응,이시초첩가효응,저량충파배시상호촉진,상호영향. 본문적연구방법급성과가이위면판혼응토내구성연구제공중요적삼고의거.
Freeze-thaw cycle and sulfate attack are two important factors that affect the durability of panel concrete.The paper studied the mass loss rate ,the viriation law and feature of relative dynamic modulus of panel concrete with water to cement ratio of 0.45,0.42,0.38 under freeze-thaw cycles ,sulfate attack and the alternation test in solutions of 5.0%Na2 SO4 .The results show that the less the water cement ra-tio,the stonger the ability of face slab concrete of resistance to frost and sulfate erosion becomes .The effect of double factors of freeze-thaw cycle and sulfate attack is not a simple mutual superposition , but is a super superposition effect .The two kinds of damage is promoted and impacted each other .The result can provide a reference for the research of durability of panel concrete .