CAJ | 학술논문

采用0．4、0．5和0．6三种不同水灰比，分别以颗粒级配为0．6 mm ～1．18 mm ，1．18 mm ～2．36 mm ，2．36 mm ～4．75 mm 的橡胶颗粒等体积代替，掺量分别为0，15％和30％，按照 L9（34）正交表进行试验，对胶粒混凝土和基准混凝土拌合物的含气量进行比较，分析其影响因素和变化规律。结果表明：胶粒掺量对拌合物含气量的影响最大，其次是水灰比，胶粒粒径影响最小。当胶粒掺量为15％时，拌合物的含气量增加了122％；当胶粒掺量为30％时，拌合物的含气量增加了171％。水灰比为0．4，胶粒掺量为30％，胶粒粒径为0．6 mm ～1．18 mm 时混凝土拌合物的含气量最大。
채용0．4、0．5화0．6삼충불동수회비，분별이과립급배위0．6 mm ～1．18 mm ，1．18 mm ～2．36 mm ，2．36 mm ～4．75 mm 적상효과립등체적대체，참량분별위0，15％화30％，안조 L9（34）정교표진행시험，대효립혼응토화기준혼응토반합물적함기량진행비교，분석기영향인소화변화규률。결과표명：효립참량대반합물함기량적영향최대，기차시수회비，효립립경영향최소。당효립참량위15％시，반합물적함기량증가료122％；당효립참량위30％시，반합물적함기량증가료171％。수회비위0．4，효립참량위30％，효립립경위0．6 mm ～1．18 mm 시혼응토반합물적함기량최대。
In the present work ,the influence factors and the effect of air content in rubber-filled concrete mixture were studied .Three water-cement ratios of 0 .4 ,0 .5 and 0 .6 were applied .The rubber grains of three grain gradations of 0 .6 mm ~ 1 .18 mm ,1 .18 mm ~ 2 .36 mm ,2 .36 mm ~ 4 .75 mm were added into the mixtures to replace sand of equal vol-ume at the amounts of 0 ,15% and 30% respectively .After the experiment was done according to the orthogonal list of L 9 (34 ) ,the air content of the mixture were compared between rubber-filled concrete and base concrete ,and its influence factors and variation patterns were analyzed .The addition amount of rubber grain takes great effect on the air content of concrete mixtures ;the water-cement ratio is secondary ,while the size of rubber grains has the least impact .As the addi-tion amount of rubber grain reaches 15% ,the air content of mixtures to 122% ,and when the addition of rubber grain reaches 30% ,the increasement of air content bacomes 171% .The concrete mixture with a water-cement ratio of 0 .4 , the grain addition amount of 30% and the grain size of 0 .6 mm ~ 1 .18 mm ,shows the largest air content .