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王海良，  李國(guó)興，  楊新磊

(天津城市建設(shè)學(xué)院土木工程學(xué)院，天津300384)

 

[摘要] 通過(guò)試驗(yàn)研究了不同玄武巖活性粉末摻量對(duì)普通硅酸鹽水泥膠砂試件強(qiáng)度的影響。根據(jù)抗折強(qiáng)度和抗壓強(qiáng)度確定了玄武巖活性粉末的最佳摻量。利用X射線衍射研究了水化產(chǎn)物的組成變化，分析了玄武巖活性粉末的增強(qiáng)機(jī)理。試驗(yàn)結(jié)果表明：玄武巖活性粉末的摻加對(duì)水泥的抗折強(qiáng)度和抗壓強(qiáng)度有明顯的改善，當(dāng)玄武巖活性粉末摻量為10%時(shí)，其對(duì)水泥的增強(qiáng)效果最為顯著。

[關(guān)鍵詞] 玄武巖活性粉末；最佳摻量；增強(qiáng)機(jī)理；X射線衍射

中圖分類(lèi)號(hào)：TU525.9    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：1002-848X( 2012) S2-0454-02

 

Wang Hailiang, Li Guoxing, Yang Xinlei

(School of Civil Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, China)

 

Abstract: Effect of addition amount of basalt reactive powder on strength of strength of Portland cement mortar was investigated herein. The optimum mix amount of basalt reactive powder was determined by flexural strength and compressive strength. The variations of hydration products were investigated by X-ray diffraction(XRD), and strengthening mechanism of basalt reactive powder was analyzed. The results showed that the flexural strength and compressive strength of Portland cement mortar could be greatly improved by mixing basalt reactive powder, and the reinforcing action was the best when the adding amount of basalt reactive powder reached 10%.

Keywords: basalt reactive powder; optimum rmx amount; strengthening mechanism; XRD