摻特細(xì)砂C30超高層泵送混凝土的制備及工程應(yīng)用
發(fā)布時(shí)間:2018-08-28 06:32
【摘要】:結(jié)合工程實(shí)際,通過采用特細(xì)砂替代部分機(jī)制砂,調(diào)整細(xì)骨料的級配曲線,使用Ⅱ級風(fēng)選粉煤灰、S95級磨細(xì)礦粉,以及高性能外加劑,在低膠凝材料用量的條件下,配制出大流動(dòng)性、高保坍C30超高層泵送混凝土。經(jīng)過原材料選擇、工作性能評價(jià)、抗壓強(qiáng)度測試等方面的研究,確定了摻特細(xì)砂的C30超高層泵送混凝土配合比。結(jié)果表明,以特細(xì)砂替代部分機(jī)制砂能夠改善混凝土性能,滿足工程施工要求,具有良好的經(jīng)濟(jì)效益和推廣意義。
[Abstract]:Combined with the engineering practice, by replacing some machined sand with ultra-fine sand, adjusting the gradation curve of fine aggregate, using the grade 鈪,
本文編號:2208572
[Abstract]:Combined with the engineering practice, by replacing some machined sand with ultra-fine sand, adjusting the gradation curve of fine aggregate, using the grade 鈪,
本文編號:2208572
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