CAJ | 학술논문

主要研究煤矸石掺量对混凝土性能的影响。试验选用煤矸石按照20％、40％、60％、80％、100％的掺量取代碎石制备 C30、C40的混凝土，探索研究煤矸石掺量对混凝土强度、抗冻性、抗渗性和碳化性能的影响，并对煤矸石的碱活性进行验证。试验结果证明，煤矸石的掺量大小对 C30混凝土和煤矸石掺量在60％以下时的 C40混凝土强度影响不大；但是当煤矸石掺量在60％以上时，C40混凝土强度明显降低；混凝土碳化试验结果表明，7 d 龄期碳化深度无明显变化，而随着煤矸石掺量的增加28 d 龄期混凝土碳化深度增大了11~17 mm；混凝土抗渗性能随着煤矸石掺量的增加渗水高度最大增加35 mm，电通量增大到普通混凝土的1．5~1．7倍。煤矸石混凝土的碱活性测试结果显示，华龙集团的煤矸石不具备碱活性。
주요연구매안석참량대혼응토성능적영향。시험선용매안석안조20％、40％、60％、80％、100％적참량취대쇄석제비 C30、C40적혼응토，탐색연구매안석참량대혼응토강도、항동성、항삼성화탄화성능적영향，병대매안석적감활성진행험증。시험결과증명，매안석적참량대소대 C30혼응토화매안석참량재60％이하시적 C40혼응토강도영향불대；단시당매안석참량재60％이상시，C40혼응토강도명현강저；혼응토탄화시험결과표명，7 d 령기탄화심도무명현변화，이수착매안석참량적증가28 d 령기혼응토탄화심도증대료11~17 mm；혼응토항삼성능수착매안석참량적증가삼수고도최대증가35 mm，전통량증대도보통혼응토적1．5~1．7배。매안석혼응토적감활성측시결과현시，화룡집단적매안석불구비감활성。
Concrete samples(strength grade is C30 and C40)were prepared,of which the gravel was replaced by slag,the slag content is 20%,40%,60%,80%and 100% respectively.The effect of slag content on compressive strength,freezing resistance,carbonization re-sistance and anti - permeability of concrete was studied,alkali reactivity of slag was also tested.The results show that slag content has no distinct effect to the compressive strength of C30 concrete,and it can hardly effect the compressive strength of C40 concrete as the con-tent is below 60%.As the slag content is more than 60%,compressive strength of C40 concrete decreases obviously.The 7 d concrete carbonation depth is stable,as the curing age is 28 d,carbonation depth of the samples increase by 11~17 mm.With the increasing of water penetration height rise to 35 mm,the infiltration capacity of Cl - increases about 1.5~1.7 times.Slag make from Hualong Industry Group has no alkali reactivity.