CAJ | 학술논문

对氯盐侵蚀后不同掺合料混凝土进行了压汞试验，从细观角度研究了掺合料对混凝土孔结构特征的影响。结果表明：单掺粉煤灰20%、35%和50%以及单掺矿粉35%和50%，均有效降低了混凝土的总孔隙率，单掺50%矿粉时总孔隙率最小；单掺粉煤灰20%、35%以及单掺矿粉35%和50%，均有效降低了混凝土的总孔面积，单掺50%矿粉时总孔面积最小；单掺粉煤灰20%、35%和50%以及单掺矿粉35%和65%，均有效降低了混凝土的平均孔径，且单掺65%矿粉时平均孔径最小；单掺粉煤灰35%和50%及单掺矿粉65%时，最可几孔径较基准混凝土明显减小，混凝土孔径得到细化；单掺粉煤灰35%和50%以及单掺矿粉35%和65%均使多害孔、有害孔比例减小，且粉煤灰掺量在50%左右，有害孔比例最小，混凝土抗渗性能最好。
대록염침식후불동참합료혼응토진행료압홍시험，종세관각도연구료참합료대혼응토공결구특정적영향。결과표명：단참분매회20%、35%화50%이급단참광분35%화50%，균유효강저료혼응토적총공극솔，단참50%광분시총공극솔최소；단참분매회20%、35%이급단참광분35%화50%，균유효강저료혼응토적총공면적，단참50%광분시총공면적최소；단참분매회20%、35%화50%이급단참광분35%화65%，균유효강저료혼응토적평균공경，차단참65%광분시평균공경최소；단참분매회35%화50%급단참광분65%시，최가궤공경교기준혼응토명현감소，혼응토공경득도세화；단참분매회35%화50%이급단참광분35%화65%균사다해공、유해공비례감소，차분매회참량재50%좌우，유해공비례최소，혼응토항삼성능최호。
The pore structure feature of concrete mixed with mineral admixture after chloride corrosion was studied through MIP.The results showed that fly ash(20%,35%,50%) and slag(35%,50%) reduced the porosity,and the porosity was the least when the SG's per-centage was 50%.Fly ash(20%,35%) and slag(35%,50%) reduced the total pore area,and the total pore area has a minimum value when the SG's percentage was 50%.Fly ash(20%,35%,50%) and slag(35%,65%) reduced the average pore size,and the value became lowest when the SG's percentage was 65%.Fly ash(35%.50%) and slag(65%) reduced the most probable aperture.Fly ash(20%,35%,50%) and slag (35%,65%) reduced the percentage of much harm pore and the harmful pore.When the dosage of fly ash was around 50%,the pore structure and anti-penetrability performance of concrete became best because the percentage of harmful pore was the lowest.