本文選題：聚苯顆�；炷� + 輕質(zhì)隔音��； 參考：《科學(xué)技術(shù)與工程》2017年12期

【摘要】：聚苯乙烯顆粒表面具有明顯的憎水性,以其為骨料制備輕質(zhì)混凝土?xí)r,現(xiàn)有技術(shù)不能徹底解決水灰比小時(shí)流動性喪失或水灰比大時(shí)骨料上浮,還有可能解決方案不便捷,甚至解決方案成本較高;針對這些不足,試驗(yàn)以聚苯顆粒和普通硅酸鹽水泥為基礎(chǔ)材料,在機(jī)械力化學(xué)和粉體材料濕法改性作用下,制備了較為穩(wěn)定的水泥懸浮液;最后借助攪拌機(jī)械力,制備了一種非牛頓流體狀輕質(zhì)混凝土;該流體狀混凝土中輕質(zhì)聚苯顆粒處于懸浮狀態(tài),解決了聚苯顆粒上浮等問題,并且適宜的水灰比下具有良好的流動性好,可實(shí)現(xiàn)自密實(shí)。另外,制備工藝技術(shù)路線簡單,對攪拌機(jī)械和施工人員專業(yè)素質(zhì)要求低,制備過程不受外界環(huán)境劇烈變化影響,可以實(shí)現(xiàn)大范圍泵送,全程可實(shí)現(xiàn)機(jī)械化施工,降低了勞動強(qiáng)度,提高了施工效率。
[Abstract]:The surface of polystyrene particle has obvious hydrophobicity. When using it as aggregate to prepare lightweight concrete, the existing technology can not completely solve the problem of loss of fluidity of water cement ratio or floatation of aggregate when water cement ratio is large, and may not be convenient to solve the problem. In order to solve these problems, stable cement suspensions were prepared by using polystyrene particles and ordinary Portland cement as basic materials, under the action of mechanical chemistry and wet modification of powder materials. Finally, a kind of non-Newtonian fluid lightweight concrete is prepared by means of stirring mechanical force, in which light polystyrene particles are suspended and the problems of floating polystyrene particles are solved. And the suitable water cement ratio has good fluidity and can realize self-compacting. In addition, the technical route of the preparation process is simple, the requirement for the professional quality of the mixing machinery and construction personnel is low, the preparation process is not affected by the drastic changes of the external environment, the pumping can be realized on a large scale, and the mechanized construction can be realized throughout the whole process. The labor intensity is reduced and the construction efficiency is improved.
【作者單位】： 北方民族大學(xué)化學(xué)與化學(xué)工程學(xué)院;寧夏大學(xué)物理電氣信息學(xué)院;寧夏旭日眾粒環(huán)�？萍加邢薰�;
【基金】：國家自然科學(xué)基金(51369001,51569001) 國家民委化工技術(shù)重點(diǎn)實(shí)驗(yàn)室研究項(xiàng)目(2011SY05)資助
【分類號】：TU528
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本文編號：1932344