混凝土
混凝土
혼응토
CONCRETE
2015年
5期
122-123,127
,共3页
干混抹灰砂浆%机制砂%石灰石粉%砂浆性能%光学显微镜
榦混抹灰砂漿%機製砂%石灰石粉%砂漿性能%光學顯微鏡
간혼말회사장%궤제사%석회석분%사장성능%광학현미경
dry mixed plastering mortar%machine - made sand%limestone powder%mortar properties%optical microscope
对石灰石粉对机制砂干混抹灰砂浆的性能影响进行了试验研究，并通过光学显微镜分析了水泥和石粉净浆的微观结构，解释了干混抹灰砂浆中水泥和石粉含量过多造成抹平困难的原因。结果表明：石粉作为矿物掺合料制备干混砂浆，石粉和粉煤灰双掺比单掺效果要好；从抹灰砂浆的施工角度考虑，每吨机制砂抹灰砂浆中总的粉料（小于0．075 mm）含量应≥230 kg，水泥和小于45μm 的石粉颗粒总量应≤150 kg。
對石灰石粉對機製砂榦混抹灰砂漿的性能影響進行瞭試驗研究，併通過光學顯微鏡分析瞭水泥和石粉淨漿的微觀結構，解釋瞭榦混抹灰砂漿中水泥和石粉含量過多造成抹平睏難的原因。結果錶明：石粉作為礦物摻閤料製備榦混砂漿，石粉和粉煤灰雙摻比單摻效果要好；從抹灰砂漿的施工角度攷慮，每噸機製砂抹灰砂漿中總的粉料（小于0．075 mm）含量應≥230 kg，水泥和小于45μm 的石粉顆粒總量應≤150 kg。
대석회석분대궤제사간혼말회사장적성능영향진행료시험연구，병통과광학현미경분석료수니화석분정장적미관결구，해석료간혼말회사장중수니화석분함량과다조성말평곤난적원인。결과표명：석분작위광물참합료제비간혼사장，석분화분매회쌍참비단참효과요호；종말회사장적시공각도고필，매둔궤제사말회사장중총적분료（소우0．075 mm）함량응≥230 kg，수니화소우45μm 적석분과립총량응≤150 kg。
Experimental study on the effect of limestone powder on the properties of dry - mixed plastering mortar with machine - made sand was carried on. The microstructures of cement and limestone powder neat paste were observed by optical microscope,and the reason of floating difficulty created by too much cement and limestone powder content in mixed plastering mortar was explained.The results showed that when limestone powder was used for mineral admixture in preparing mixed mortar,the effect of double - doped limestone powder and fly - ash was better than that of single - doped limestone powder or fly - ash.From floating construct of plastering mortar perspective,the total content of the powder(including cement and limestone powder)with less than 0.075 mm in per ton mixed mortar should be equal or greater than 230 kg and the total content of cement and limestone powder with less than 45 μm should be equal or less than 150 kg.
