CAJ | 학술논문

模拟了贵州地区地下水强酸盐复合腐蚀环境，系统研究了粉煤灰、矿渣粉和硅灰3种矿物掺合料单掺与复掺对水泥砂浆耐腐蚀性能，如耐蚀系数、质量变化率、氯离子相对扩散系数的影响规律，并探讨了地下水强酸盐复合腐蚀环境下水泥砂浆的腐蚀机理。结果表明，与基准砂浆相比，单掺与复掺矿物掺合料均提高了砂浆的耐蚀系数，降低了砂浆后期氯离子相对扩散系数，但增大了砂浆质量损失率。这3项指标从不同角度反映了地下水复合腐蚀环境下水泥砂浆的耐腐蚀性能。
모의료귀주지구지하수강산염복합부식배경，계통연구료분매회、광사분화규회3충광물참합료단참여복참대수니사장내부식성능，여내식계수、질량변화솔、록리자상대확산계수적영향규률，병탐토료지하수강산염복합부식배경하수니사장적부식궤리。결과표명，여기준사장상비，단참여복참광물참합료균제고료사장적내식계수，강저료사장후기록리자상대확산계수，단증대료사장질량손실솔。저3항지표종불동각도반영료지하수복합부식배경하수니사장적내부식성능。
The strong acid and salt composite groundwater in Guizhou province is simulated in the lab,and the influence of single addition and composite addition of mineral admixtures such as fly ash,slag and silica fume etc.on corrosion resistances of cement mortar using the evaluation indexes such as anti-corrosion coefficient,mass change fraction and chloride ion relative diffusion coefficient in the simulated solution is systematically studied.And its anti-corrosion mechanism of cement mortar is discussed.The results show that the single or composite addition of mineral admixtures results in the improvement of anti-corrosion coefficient,the reduction of chloride ion relative diffusion coefficient and the increase of mass change fraction of mortar compared with the control mortar.The three proposed evaluation indexes can evaluate the corrosion resistance of cement mortar exposed to strong acid and salt composite groundwater from different perspectives.