【摘要】：以含有活性氧化鎂和碳酸鈣的輕燒白云石、粉煤灰作為硅酸鹽水泥的摻和料。研究了相同摻量粉煤灰、輕燒白云石及粉煤灰與輕燒白云石復摻時膠凝材料力學性能的變化規(guī)律。結(jié)合水化熱、XRD、FSEM等測試手段對不同體系膠凝材料的水化過程、組成及微觀形貌進行了表征。結(jié)果表明,粉煤灰與輕燒白云石復摻時,膠凝材料具有優(yōu)于單摻時的力學性能。當輕燒白云石摻量為10%,粉煤灰摻量為30%時,膠凝材料在90 d的抗壓強度可以達到51.0 MPa,為粉煤灰和輕燒白云石單摻40%時膠凝材料抗壓強度的123.2%和151.8%。
[Abstract]:Fly ash was used as the admixture of Portland cement with light burning dolomite containing active magnesium oxide and calcium carbonate. The change of mechanical properties of cementing materials with the same amount of fly ash, light calcined dolomite and fly ash and light calcined dolomite was studied. The hydration process, composition and micromorphology of different systems of cementing materials were characterized by means of XRD- FSEM. The results show that when fly ash is mixed with light calcined dolomite, the cementing material has better mechanical properties. When the content of light burned dolomite and fly ash is 10 and 30 respectively, the compressive strength of cementitious material can reach 51.0 MPa in 90 days, which is 123.2% and 151.8% of that of fly ash and light burned dolomite.
【作者單位】： 四川省非金屬復合與功能材料重點實驗室-省部共建國家重點實驗室培育基地;
【基金】：四川省非金屬復合與功能材料實驗室開放基金(13zxfk04) 西南科技大學重點科研平臺專職科研團隊建設基金(14tdfk01)
【分類號】：TU528.04

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