混凝土
混凝土
혼응토
CONCRETE
2014年
12期
11-13
,共3页
丁莎%牛荻涛%王家滨%胡晓鹏
丁莎%牛荻濤%王傢濱%鬍曉鵬
정사%우적도%왕가빈%호효붕
喷射混凝土%抗压强度%劈裂抗拉强度%渗透性
噴射混凝土%抗壓彊度%劈裂抗拉彊度%滲透性
분사혼응토%항압강도%벽렬항랍강도%삼투성
shotcrete%compressive strength%splitting tensile strength%permeability
试验采用扫描电子显微镜（SEM）对喷射混凝土微观结构进行分析，并采用RCM氯离子渗透法研究了粉煤灰对喷射混凝土抗氯离子渗透性能的影响，并对其抗压强度、劈裂抗拉强度进行研究。试验结果表明：随着粉煤灰掺量增大，喷射混凝土微观结构变得致密，强度和抗渗性显著提高。粉煤灰的最佳掺量为20%左右，超过此掺量喷射混凝土抗压强度降低，喷射混凝土强度和渗透性有较好的相关性。
試驗採用掃描電子顯微鏡（SEM）對噴射混凝土微觀結構進行分析，併採用RCM氯離子滲透法研究瞭粉煤灰對噴射混凝土抗氯離子滲透性能的影響，併對其抗壓彊度、劈裂抗拉彊度進行研究。試驗結果錶明：隨著粉煤灰摻量增大，噴射混凝土微觀結構變得緻密，彊度和抗滲性顯著提高。粉煤灰的最佳摻量為20%左右，超過此摻量噴射混凝土抗壓彊度降低，噴射混凝土彊度和滲透性有較好的相關性。
시험채용소묘전자현미경（SEM）대분사혼응토미관결구진행분석，병채용RCM록리자삼투법연구료분매회대분사혼응토항록리자삼투성능적영향，병대기항압강도、벽렬항랍강도진행연구。시험결과표명：수착분매회참량증대，분사혼응토미관결구변득치밀，강도화항삼성현저제고。분매회적최가참량위20%좌우，초과차참량분사혼응토항압강도강저，분사혼응토강도화삼투성유교호적상관성。
The micro-structure of shotcrete was investigated by means of SEM. The influence of fly ash on permeability of shotcrete was investigated by means of RCM. The compressive strength and splitting tensile strength of shotcrete was researched.The test results show that with the increase of fly ash,the micro-structure of shotcrete is changed as well,thestrength and resistance to chloridion penetration of shotcrete increase obviously.The compressive strength of shotcrete will decline when the production of fly ash exceed 20 percent.The strength and resistance to chloridion penetration of shotcrete has a good relationship.
