CAJ | 학술논문

对比研究了不同胶凝材料用量（465~560 kg/m3）对自密实混凝土工作性能、力学性能以及氯离子扩散系数的影响。试验表明，随着胶凝材料用量的增加，自密实混凝土的氯离子扩散系数先降低后升高；当胶凝材料用量较低时，混凝土内部大孔较多，ITZ结构松散，抗渗性较差；随着胶凝材料的增加，混凝土更密实，大孔减少而毛细孔相对增多，ITZ也越来越致密，界面变窄，抗渗性较好；当增大到一定用量时，界面孔隙率会稍微增加，抗渗性劣化。
대비연구료불동효응재료용량（465~560 kg/m3）대자밀실혼응토공작성능、역학성능이급록리자확산계수적영향。시험표명，수착효응재료용량적증가，자밀실혼응토적록리자확산계수선강저후승고；당효응재료용량교저시，혼응토내부대공교다，ITZ결구송산，항삼성교차；수착효응재료적증가，혼응토경밀실，대공감소이모세공상대증다，ITZ야월래월치밀，계면변착，항삼성교호；당증대도일정용량시，계면공극솔회초미증가，항삼성열화。
The cementation materials content(465~560 kg/m3)on the work performance,mechanical properties and the diffusion coeffi-cient of chloride ion of the self-compacting concrete was studied.Experimental results showed that with the increase of cementitious mate-rials,the diffusion coefficient of chloride ion of self-compacting concrete first and then decreased.When the cementitious material was low,there were more large pores inside the concrete,and the interfacial transition zone structure was loose,then the impermeability was poor.With the increase of cementitious materials,the concrete was more dense,and the macroporous pores reduced the relative increase, the interfacial transition zone increasingly dense,the interface became narrower,better impermeability.When increased to a certain amount,the interfacial transition zone will be slightly increased porosity,permeability deteriorated.