CAJ | 학술논문

试验设计制作了几组掺有不同矿物掺和料、不同配合比的再生混凝土试块，利用加速氯离子渗透性试验对试块进行了抗氯离子渗透性能的测定，以考察常用矿物掺和料对再生混凝土抗氯离子渗透性能的影响规律。试验结果表明，掺有8％硅灰的再生混凝土试块，其氯离子渗透系数减少12.2％～53.4％；掺有25％的粉煤灰，再生混凝土试块氯离子渗透系数减少7.8％～50.1％；掺有25％矿渣微粉的再生混凝土试块，其氯离子渗透系数减少7.1％～43.9％；可见3种矿物掺和料-粉煤灰、矿渣微粉以及硅灰对再生混凝土的抗氯离子渗透性能均有一定的提高，其中以硅粉的效果最好，粉煤灰次之，矿渣微粉较差。
시험설계제작료궤조참유불동광물참화료、불동배합비적재생혼응토시괴，이용가속록리자삼투성시험대시괴진행료항록리자삼투성능적측정，이고찰상용광물참화료대재생혼응토항록리자삼투성능적영향규률。시험결과표명，참유8％규회적재생혼응토시괴，기록리자삼투계수감소12.2％～53.4％；참유25％적분매회，재생혼응토시괴록리자삼투계수감소7.8％～50.1％；참유25％광사미분적재생혼응토시괴，기록리자삼투계수감소7.1％～43.9％；가견3충광물참화료-분매회、광사미분이급규회대재생혼응토적항록리자삼투성능균유일정적제고，기중이규분적효과최호，분매회차지，광사미분교차。
Some recycled concrete specimens with different water to binder ratio are analyzed by experiments in order to study on the influence of the mineral admixture on anti-chloride ion permeability of recycled aggregate concrete by accelerated chloride migration test.The results show that the diffusion coefficient of chloride ion of recycled concrete with 8% silica fume has lower 12.2%~53.4% than that of them not with the mineral admixture,with 25% fly ash has lower 7.8%~50. 1% and with 25% slag has lower 7. 1%~43.9%.We can see that three kinds of mineral admixtures can all enhance anti-chlo-ride ion permeability of recycled aggregate concrete,silica fume has the best effect,slag is in the second place,and fly ash is in the third place.