本文選題：水泥 + 廢棄砂漿粉��； 參考：《硅酸鹽通報》2017年09期

【摘要】：研究了廢棄砂漿粉對水泥物理力學性能的影響,測試了標準稠度需水量、凝結時間、流動度和強度。結果表明:廢棄砂漿粉的摻加導致水泥的標準稠度需水量增加,水泥的凝結時間總體降低,水泥凈漿的流動度及流動度損失均呈降低趨勢,而減水劑與水灰比對水泥凈漿的流動度及流動度損失有較大影響。廢棄砂漿粉摻加量的多少將直接影響到水泥砂漿的強度,摻量越大,水泥砂漿強度損失越嚴重,而摻量低于10%時,水泥砂漿仍具有較高的抗壓強度和抗折強度。微觀結構特征表明,廢棄砂漿粉摻量在一定范圍時,水泥砂漿體系中產(chǎn)生鈣礬石與C-S-H凝膠較多,體系結構密實性好。
[Abstract]:The effects of waste mortar powder on the physical and mechanical properties of cement were studied. The standard consistency water requirement, setting time, fluidity and strength were measured.The results show that the addition of waste mortar powder leads to the increase of standard consistency water requirement of cement, the decrease of setting time of cement, and the decrease of fluidity and fluidity loss of cement paste.The ratio of water reducing agent to water cement has great influence on the fluidity and fluidity loss of cement paste.The strength of cement mortar will be affected directly by the amount of waste mortar powder. The greater the amount of waste mortar is, the more serious the strength loss of cement mortar is. However, when the content is less than 10, the cement mortar still has high compressive strength and flexural strength.The microstructure of the cement mortar shows that ettringite and C-S-H gels are produced in the cement mortar system when the amount of waste mortar powder is in a certain range and the structure of the cement mortar system has good compactness.
【作者單位】： 沈陽建筑大學材料科學與工程學院;
【基金】：國家自然科學基金(51678374) 國家建筑材料行業(yè)科技創(chuàng)新計劃(2013-M3-8) 住房和城鄉(xiāng)建設部項目(2015-K4-002)
【分類號】：TQ172.1

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