本文選題：泡沫水泥 + 輕質(zhì)保溫材料　； 參考：《新型建筑材料》2016年11期

【摘要】：為制備較高韌性的輕質(zhì)水泥基發(fā)泡保溫材料,研究了粉煤灰摻量、粉煤灰激活劑摻量、輕骨料比率及聚乙烯醇纖維摻量等對(duì)發(fā)泡體系性能和微觀結(jié)構(gòu)的影響。試驗(yàn)結(jié)果顯示,粉煤灰能明顯降低發(fā)泡體系的溫度和干密度,當(dāng)其摻量大于30%時(shí),試件早期強(qiáng)度大幅降低,因此粉煤灰摻量應(yīng)小于30%;粉煤灰激活劑能明顯提高試件的早期強(qiáng)度,當(dāng)其摻量為2.5%時(shí),效果最佳;隨輕骨料比率增大,干混體系空隙率先減小后增大,導(dǎo)熱系數(shù)逐漸減小,當(dāng)輕骨料比率為24%時(shí),空隙率最小而導(dǎo)熱系數(shù)趨于穩(wěn)定;聚乙烯醇纖維能明顯改善試件的韌性和表面微觀形貌,綜合考慮纖維摻量不應(yīng)大于1%。
[Abstract]:In order to prepare high toughness lightweight cement based foam insulation material, the effects of fly ash content, fly ash activator content, lightweight aggregate ratio and polyvinyl alcohol fiber content on the properties and microstructure of foaming system were studied. The test results show that the temperature and dry density of foaming system can be obviously reduced by fly ash. When the content of fly ash is more than 30%, the early strength of the specimen will be greatly reduced, so the content of fly ash should be less than 30%, and the activator of fly ash can obviously improve the early strength of the specimen. With the increase of lightweight aggregate ratio, the void of dry mixing system decreases first and then increases, and the thermal conductivity decreases gradually. When the ratio of light aggregate is 24, the porosity is the smallest and the thermal conductivity tends to be stable. Polyvinyl alcohol fiber can obviously improve the toughness and surface morphology of the specimen, and the fiber content should not be greater than 1.
【作者單位】： 黃河水利職業(yè)技術(shù)學(xué)院;
【分類號(hào)】：TU551
，

本文編號(hào)：1985915