人民长江
人民長江
인민장강
Yangtze River
2015年
20期
72-76
,共5页
碾压混凝土%原材料试验%力学热学试验%参数选定%配和比优化%观音岩水电站
碾壓混凝土%原材料試驗%力學熱學試驗%參數選定%配和比優化%觀音巖水電站
년압혼응토%원재료시험%역학열학시험%삼수선정%배화비우화%관음암수전참
rolling concrete%raw material test%mechanics and thermal test%parameter selection%proportion optimization%Guanyinyan Hydropower Station
云南观音岩水电站碾压混凝土大坝施工前，为了保证混凝土质量，在选定水泥、粉煤灰、外加剂和骨料等材料的基础上，进行了配合比试验。主要试验内容包括：最佳砂率、骨料级配、外加剂掺量、VC值以及混凝土极限拉伸值、抗冻抗渗性能、线膨胀系数、自生体积、比热、导热系数、绝对温升等。根据试验结果，最终选定了大坝碾压混凝土配合比。实际施工效果表明，混凝土砂浆骨料包裹均匀，泛浆良好，抗冻、抗渗、温升等指标均满足设计要求。
雲南觀音巖水電站碾壓混凝土大壩施工前，為瞭保證混凝土質量，在選定水泥、粉煤灰、外加劑和骨料等材料的基礎上，進行瞭配閤比試驗。主要試驗內容包括：最佳砂率、骨料級配、外加劑摻量、VC值以及混凝土極限拉伸值、抗凍抗滲性能、線膨脹繫數、自生體積、比熱、導熱繫數、絕對溫升等。根據試驗結果，最終選定瞭大壩碾壓混凝土配閤比。實際施工效果錶明，混凝土砂漿骨料包裹均勻，汎漿良好，抗凍、抗滲、溫升等指標均滿足設計要求。
운남관음암수전참년압혼응토대패시공전，위료보증혼응토질량，재선정수니、분매회、외가제화골료등재료적기출상，진행료배합비시험。주요시험내용포괄：최가사솔、골료급배、외가제참량、VC치이급혼응토겁한랍신치、항동항삼성능、선팽창계수、자생체적、비열、도열계수、절대온승등。근거시험결과，최종선정료대패년압혼응토배합비。실제시공효과표명，혼응토사장골료포과균균，범장량호，항동、항삼、온승등지표균만족설계요구。
Before the construction of rolling concrete dam of Guanyinyan Hydropower Station , to guarantee the concrete quali-ty, the mix proportion test was conducted by selecting the concrete , fly ash, admixture and aggregate etc .The main test contents included the optimal sand rate , aggregate gradation , admixture amount , VC value and the limit tension value , anti-frost and an-ti-seepage capability , linear expansion coefficient , autogenous volume , specific heat capacity , thermal conductivity , and abso-lute temperature rise of the concrete .The final concrete mix proportion was determined according to the test result .The practical construction shows that the aggregate is packaged homogeneously by slurry , the slurry bleeding is appropriate , and the indexes of anti-frost, anti-seepage and temperature rise etc .meet design demand .
