養(yǎng)護條件對硅鈣渣基堿激發(fā)膠凝材料性能、反應產(chǎn)物及微觀結(jié)構(gòu)的影響
[Abstract]:By means of X-ray diffraction, infrared spectroscopy, thermogravimetric differential scanning calorimetry (TG-DSC), mercury injection method and scanning electron microscope (SEM), the (SA), of (MA), naturally sealed air with constant temperature and humidity was studied. Under three curing conditions of high temperature and humid air (HA), the properties, reaction products and microstructure of the cementing materials excited by silica slag base were studied. The results show that the densification and strength properties of the samples are different under the three curing conditions, although the main products are calcium silicate hydrated gel. The densification degree and strength of the samples cured by HA are the highest. Compared with MA, under the condition of HA curing, the densification degree and strength property of the samples increased significantly because of the promotion of temperature to the alkali excitation reaction and the increase of the number of the products. Under the condition of SA curing, although the increase of temperature can promote the alkali excitation reaction, the quantity of the product will increase, and the capillary pore distribution in the sample will move towards the direction of low pore size, but the decrease of relative humidity in the sample will hinder it. Therefore, the effect of SA curing on the densification and strength properties of the specimen is weak.
【作者單位】: 中國建筑材料科學研究總院綠色建筑材料國家重點實驗室;大唐國際發(fā)電股份有限公司高鋁煤炭資源開發(fā)利用研發(fā)中心;
【基金】:國家“863”計劃(2012AA06A118) 國家自然科學基金(51402279)資助項目
【分類號】:TQ177
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