CAJ | 학술논문

采用5种工艺对废弃水泥混凝土再生骨料（RCA）进行表面处理。压碎指标、吸水性和表观相对密度的测试结果表明，RCA先用稀硫酸超声波处理然后再用氢氧化钙溶液处理工艺（SJ）能显著改善RCA的各项性能。SJ-RCA的压碎指标和吸水性比处理前分别降低20.7%和13%，而表观相对密度提高8.6%。对处理后的再生骨料-沥青混合料（RSAM）性能的粘附等级、流值和马歇尔稳定值进行了研究，结果表明，适当的处理工艺能显著提高RSAM的粘附等级和稳定值，并能降低流值。
채용5충공예대폐기수니혼응토재생골료（RCA）진행표면처리。압쇄지표、흡수성화표관상대밀도적측시결과표명，RCA선용희류산초성파처리연후재용경양화개용액처리공예（SJ）능현저개선RCA적각항성능。SJ-RCA적압쇄지표화흡수성비처리전분별강저20.7%화13%，이표관상대밀도제고8.6%。대처리후적재생골료-력청혼합료（RSAM）성능적점부등급、류치화마헐이은정치진행료연구，결과표명，괄당적처리공예능현저제고RSAM적점부등급화은정치，병능강저류치。
Waste concrete aggregates (RCA) was surface treated by ifve methods. Crush index, water absorption and apparent relative density of the test results showed that cleaned by 0.5%H2SO4 and then using Ca(OH)2 solution meanwhile using ultrasonic (SJ) can signiifcantly improve the various properties of RCA. The crush index and water absorption of SJ-RCA were reduced by 20.7%and 13%respectively than before, and the apparent relative density increased by 8.6%. Test results also showed that the adhesion and Marshall stability of SJ-RSAM are signiifcantly higher than that of WJ-RSAM.