本文關(guān)鍵詞： 抹灰砂漿 鎂渣 木質(zhì)素纖維 回歸模型　出處：《硅酸鹽通報》2016年06期 　論文類型：期刊論文

【摘要】：為有效與充分利用工業(yè)廢料,改善抹灰砂漿的性能,以水膠比、鎂渣摻量、外加劑摻量和木質(zhì)素纖維摻量為因素,設(shè)計(jì)正交試驗(yàn)方案L16(45),試驗(yàn)研究了鎂渣木質(zhì)素纖維復(fù)合抹灰砂漿的性能。應(yīng)用激光粒度儀分析了鎂渣的顆粒級配,掃描電鏡分析了鎂渣的形貌和砂漿的微觀結(jié)構(gòu),正交試驗(yàn)理論分析了各因素的作用規(guī)律,及其顯著性,最小二乘法建立了抹灰砂漿和易性參數(shù)及力學(xué)強(qiáng)度的多元非線性回歸模型。在試驗(yàn)研究條件下,鎂渣、外加劑和木質(zhì)素纖維能明顯改善砂漿的和易性,木質(zhì)素纖維對砂漿保水性的影響顯著,鎂渣對砂漿的流動性稍有不利影響;鎂渣和木質(zhì)素纖維對抹灰砂漿的力學(xué)強(qiáng)度有增強(qiáng)效應(yīng),木質(zhì)素纖維對砂漿強(qiáng)度的影響不顯著,鎂渣摻量有較大影響;建立的回歸模型顯著性高,相關(guān)性好。
[Abstract]:In order to make full use of industrial waste and improve the performance of plastering mortar, orthogonal test scheme L1645 was designed with water / binder ratio, magnesium slag content, admixture content and lignin fiber content as factors. The properties of magnesium slag lignin fiber composite plastering mortar were studied. The particle gradation of magnesium slag was analyzed by laser particle size analyzer and the morphology and microstructure of magnesium slag were analyzed by scanning electron microscope. The orthogonal test theory analyzed the action law of each factor and its significance. The least square method established the multivariate nonlinear regression model of plastering mortar and easiness parameters and mechanical strength. Under the experimental conditions, magnesium slag. Admixture and lignin fiber can obviously improve the compatibility of mortar, lignin fiber has a significant effect on the water retention of mortar, and magnesium slag has a little adverse effect on the fluidity of mortar. The mechanical strength of plastering mortar was enhanced by magnesium slag and lignin fiber, but the effect of lignin fiber on mortar strength was not significant. The established regression model has high significance and good correlation.
【作者單位】： 寧夏大學(xué)土木與水利工程學(xué)院;
【基金】：國家自然科學(xué)基金(51368047) 寧夏回族自治區(qū)建筑工程質(zhì)量監(jiān)督檢驗(yàn)站資助項(xiàng)目(HX2014116) 寧夏大學(xué)研究生創(chuàng)新項(xiàng)目(GIP201631)
【分類號】：TU578.1
【正文快照】： 1引言抹灰砂漿往往因粘結(jié)和抗裂性能不足,而產(chǎn)生脫落、開裂,影響建筑物的外觀,危及結(jié)構(gòu)構(gòu)件的耐久性。隨著經(jīng)濟(jì)發(fā)展和施工技術(shù)的提高,現(xiàn)代建筑對抹灰砂漿硬結(jié)前的工作性、硬化后的粘結(jié)性和抗裂性要求不斷提高,改善抹灰砂漿性能成為當(dāng)前研究的熱點(diǎn)。應(yīng)用摻合料[1,2]、纖維[3-5]，

本文編號：1485663