CAJ | 학술논문

通过研究含有粉煤灰、沸石和矿渣的水泥胶砂试样因碱-硅酸反应所引起的膨胀和微观开裂特征表明:复合矿物材料(粉煤灰、沸石和矿渣)在低碱水泥和高活性集料中并不能完全消除水泥胶砂试样中的碱-硅酸反应,但减少了胶砂试样的膨胀率和膨胀破坏;且随着复合材料的增加,胶砂试样的膨胀率和膨胀破坏下降,微观结构得到改善.此外还研究了复合矿物材料对水泥胶砂流动性和强度的影响.
통과연구함유분매회、비석화광사적수니효사시양인감-규산반응소인기적팽창화미관개렬특정표명:복합광물재료(분매회、비석화광사)재저감수니화고활성집료중병불능완전소제수니효사시양중적감-규산반응,단감소료효사시양적팽창솔화팽창파배;차수착복합재료적증가,효사시양적팽창솔화팽창파배하강,미관결구득도개선.차외환연구료복합광물재료대수니효사류동성화강도적영향.
The expansion and micro-cracks of the mortar with composite mineral admixtures (fly ash, zeolite and slag) due to the alkali-silica reaction (ASR) are studied. Results show that composite mineral admixtures cannot absolutely diminish the ASR of mortar bars with the low-alkali cement and a highly reactive aggregate. But the expansion rate and the deleterious expansion of the mortar bar are mostly reduced with increasing composite mineral admixture. The influence of mineral admixtures on the fluidity of the paste and the strength of the mortar is also studied.