本文選題：堿渣　切入點(diǎn)：注漿材料　出處：《四川建筑科學(xué)研究》2017年06期 　論文類型：期刊論文

【摘要】：為拓寬堿渣利用范圍,研制開(kāi)發(fā)了堿渣-粉煤灰注漿材料。通過(guò)正交試驗(yàn)研究了粉煤灰與堿渣質(zhì)量比(A)、液固比(B)與硅酸鈉溶液濃度(C)對(duì)漿液強(qiáng)度的影響;用極差分析和方差分析討論了各因素對(duì)強(qiáng)度的影響規(guī)律,并采用多元二次回歸方法分析得到了能夠較好表達(dá)該注漿材料28 d強(qiáng)度與3個(gè)影響因素之間的數(shù)學(xué)公式;最后擬合出了堿渣-粉煤灰注漿材料強(qiáng)度隨齡期變化的發(fā)展曲線以及相應(yīng)表達(dá)式。研究表明:因素A為3∶2、因素B為1.1、因素C為3.0 mol/L時(shí),注漿材料28 d強(qiáng)度最高;3 d強(qiáng)度主要受粉煤灰與堿渣質(zhì)量比控制,7 d、28 d強(qiáng)度受硅酸鈉溶液濃度影響最顯著;該配合比條件下,強(qiáng)度前期有較快增長(zhǎng),中期是發(fā)展最快階段,25 d左右時(shí),強(qiáng)度趨于穩(wěn)定但仍有小幅提高,隨齡期呈S形增長(zhǎng)。
[Abstract]:In order to widen the utilization range of alkali slag, the grouting material of alkali slag and fly ash was developed. The effects of the mass ratio of fly ash to alkali slag (A ~ (1)), liquid / solid ratio (B) and sodium silicate solution (C) on the strength of slurry were studied by orthogonal test. The influence of various factors on strength is discussed by means of range analysis and variance analysis, and the mathematical formula between the 28 d strength of the grouting material and the three influencing factors is obtained by using the multivariate quadratic regression analysis. Finally, the development curve and corresponding expression of the strength of alkali slag fly ash grouting material with age are fitted. The results show that when factor A is 3: 2, factor B is 1.1, factor C is 3.0 mol/L. The maximum strength of grouting material in 28 days is mainly controlled by the mass ratio of fly ash to alkali slag. The influence of concentration of sodium silicate solution on the strength of slurry material is most significant at 7 days and 28 days, and the early strength increases rapidly under the condition of the mixture ratio. The intensity tended to be stable but still increased slightly at the middle stage, which was the fastest stage of development for about 25 days, and increased with the age.
【作者單位】： 河北工業(yè)大學(xué)土木與交通學(xué)院;河北省土木工程技術(shù)研究中心;河北省地礦局水文工程地質(zhì)勘查院;
【基金】：河北省科技廳基金資助項(xiàng)目(15273802D)
【分類號(hào)】：TB302;TD823.7

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本文編號(hào)：1651658