人民黄河
人民黃河
인민황하
Yellow River
2015年
8期
115-118
,共4页
膨胀纤维混凝土%纤维膨胀剂%耐久性%缺陷修补%正交试验
膨脹纖維混凝土%纖維膨脹劑%耐久性%缺陷脩補%正交試驗
팽창섬유혼응토%섬유팽창제%내구성%결함수보%정교시험
expansive and fiber concrete%fiber and expansive agent%durability%repair defect%orthogonal experiment
膨胀纤维混凝土是一种将纤维膨胀剂与其他材料一起拌和形成的新型混凝土，具有较强的耐久性。为修补水工混凝土中大面积的蜂窝与孔洞等缺陷，通过凿除试件中缺陷混凝土，以便形成形状与深度都相同的方形凹槽，并且应用正交法设计得到比原混凝土级配低一级、强度高一级的膨胀纤维混凝土进行缺陷修补。试验分析了膨胀纤维掺量、粉煤灰掺量、减水剂掺量与砂率对膨胀纤维混凝土耐久性的影响，并确定最佳配合比以获得最佳耐久性能。结果表明：修补后的混凝土在耐久性方面得到了较大的改善；纤维膨胀剂是影响新型膨胀纤维混凝土耐久性能的最重要因素，但纤维膨胀剂用量并不是越多越好。
膨脹纖維混凝土是一種將纖維膨脹劑與其他材料一起拌和形成的新型混凝土，具有較彊的耐久性。為脩補水工混凝土中大麵積的蜂窩與孔洞等缺陷，通過鑿除試件中缺陷混凝土，以便形成形狀與深度都相同的方形凹槽，併且應用正交法設計得到比原混凝土級配低一級、彊度高一級的膨脹纖維混凝土進行缺陷脩補。試驗分析瞭膨脹纖維摻量、粉煤灰摻量、減水劑摻量與砂率對膨脹纖維混凝土耐久性的影響，併確定最佳配閤比以穫得最佳耐久性能。結果錶明：脩補後的混凝土在耐久性方麵得到瞭較大的改善；纖維膨脹劑是影響新型膨脹纖維混凝土耐久性能的最重要因素，但纖維膨脹劑用量併不是越多越好。
팽창섬유혼응토시일충장섬유팽창제여기타재료일기반화형성적신형혼응토，구유교강적내구성。위수보수공혼응토중대면적적봉와여공동등결함，통과착제시건중결함혼응토，이편형성형상여심도도상동적방형요조，병차응용정교법설계득도비원혼응토급배저일급、강도고일급적팽창섬유혼응토진행결함수보。시험분석료팽창섬유참량、분매회참량、감수제참량여사솔대팽창섬유혼응토내구성적영향，병학정최가배합비이획득최가내구성능。결과표명：수보후적혼응토재내구성방면득도료교대적개선；섬유팽창제시영향신형팽창섬유혼응토내구성능적최중요인소，단섬유팽창제용량병불시월다월호。
Expansive and fiber concrete has strong durability,and it is a kind of concrete which mixes fiber expansion agent and other materi-al together to form a new type of concrete. In hydraulic concrete for repairing large area honeycomb and holes and other defects,by chiseling defect specimens of concrete,so as to form a square groove shape and depth of the same,and orthogonal test was used to design smaller gra-dation and higher strength grade of expansive concrete to repair defects. It analyzed the influence of different amount of fly ash,dosage of ex-pansive agent,water-reducing admixture and sand ratio on durability of expansive and fiber concrete,and recommended the best mix ratio for the best durability. The results show that concrete after repairing has been improved greatly in terms of durability;expansive and fiber agent is the most important factor in durability of the new expansive and fiber concrete,but the dosage of expansive and fiber agent is not the more the better.
