混凝土
混凝土
혼응토
CONCRETE
2015年
5期
26-28,33
,共4页
橡胶粉%再生混凝土%掺量%粒径%氯离子渗透性%扫描电镜
橡膠粉%再生混凝土%摻量%粒徑%氯離子滲透性%掃描電鏡
상효분%재생혼응토%참량%립경%록리자삼투성%소묘전경
rubber powder%recycled aggregate concrete%content%particle size%chloride permeability%SEM
以再生混凝土的氯离子非稳态迁移系数的为标准，对掺入不同量橡胶粉；掺入不同粒径橡胶粉的 C10、C15、C20三个强度等级的再生混凝土的氯离子渗透性能进行研究，并用扫描电子显微镜对试件的微观结构进行观察研究。结果表明：掺入橡胶粉可以改善再生混凝土的抗氯离子渗透性能；加大掺量，减小掺加橡胶粉的粒径均可以降低再生混凝土的氯离子渗透性。相对而言，减小橡胶粉的粒径较加大橡胶粉的掺量对于改善再生混凝土抗氯离子渗透能力作用更明显。
以再生混凝土的氯離子非穩態遷移繫數的為標準，對摻入不同量橡膠粉；摻入不同粒徑橡膠粉的 C10、C15、C20三箇彊度等級的再生混凝土的氯離子滲透性能進行研究，併用掃描電子顯微鏡對試件的微觀結構進行觀察研究。結果錶明：摻入橡膠粉可以改善再生混凝土的抗氯離子滲透性能；加大摻量，減小摻加橡膠粉的粒徑均可以降低再生混凝土的氯離子滲透性。相對而言，減小橡膠粉的粒徑較加大橡膠粉的摻量對于改善再生混凝土抗氯離子滲透能力作用更明顯。
이재생혼응토적록리자비은태천이계수적위표준，대참입불동량상효분；참입불동립경상효분적 C10、C15、C20삼개강도등급적재생혼응토적록리자삼투성능진행연구，병용소묘전자현미경대시건적미관결구진행관찰연구。결과표명：참입상효분가이개선재생혼응토적항록리자삼투성능；가대참량，감소참가상효분적립경균가이강저재생혼응토적록리자삼투성。상대이언，감소상효분적립경교가대상효분적참량대우개선재생혼응토항록리자삼투능력작용경명현。
Taking the non - steady - state migration coefficient of recycled aggregate concrete as standard,it studied the effect on the chloride permeability of three intensity levels of the recycled aggregate concrete when mixed with different content and particle size of rubber powder and observe the microstructure of the specimens by SEM.It finally draw a conclusion that the mixture of rubber powder would improve the chloride permeability of recycled aggregate concrete;the increase of content and the reduction of particle size of the rubber powder could both decrease the chloride permeability of recycled aggregate concrete.As compared to the increase of content,the reduction of particle size of rubber powder had more obvious effect on improving the chloride permeability of recycled aggregate con-crete.
