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（1 石家莊經(jīng)濟(jì)學(xué)院勘查技術(shù)與工程學(xué)院， 石家莊 050031； 2 河北省水資源可持續(xù)利用與開(kāi)發(fā)重點(diǎn)實(shí)驗(yàn)室， 石家莊 050031；3 中鐵隧道勘測(cè)設(shè)計(jì)院有限公司， 天津 300133）

［摘要］為了研究摻合礦物質(zhì)混凝土梁被不同濃度的硫酸鹽溶液浸泡后的正截面受彎承載力，對(duì)6根鋼筋混凝土簡(jiǎn)支梁進(jìn)行了四點(diǎn)加載試驗(yàn)，分析梁承載力隨硫酸鹽溶液濃度的變化規(guī)律。結(jié)果表明：摻合的礦物質(zhì)能夠有效改善普通混凝土的抗硫酸侵蝕性能；梁試件正截面受彎承載力隨硫酸鹽溶液濃度的增加而減?。涣蛩猁}溶液的濃度越大，摻合礦物質(zhì)混凝土梁的正截面受彎承載力增加越明顯。在試驗(yàn)的基礎(chǔ)上提出了考慮摻合礦物質(zhì)和硫酸鹽濃度的混凝土梁正截面受彎承載力計(jì)算公式，計(jì)算值與試驗(yàn)值符合較好。

［關(guān)鍵詞］粉煤灰; 礦渣; 硫酸鹽溶液; 鋼筋混凝土梁; 正截面受彎承載力

中圖分類(lèi)號(hào)：TU375.1, U457+.5    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2015)04-0081-04

Experimental study on normal section flexural strength of sulfate corroded concrete beams

Jia Lei1，2, Xie Yongping1, Li Shenkui3

 (1 School of Exploration Technology and Engineering, Shijiazhuang University of Economics, Shijiazhuang 050031, China;2 Hebei Province Key Laboratory of Sustained Development and Utilization of Water Resources, Shijiazhuang 050031, China;3 China Railway Tunnel Survey & Design Institute Co., Ltd., Tianjin 300133, China)

Abstract:

Six reinforced concrete simply\|supported beams subjected to the four point loading were tested to investigate the normal section flexural strength of reinforced concrete beams with different concentration of sulfate solution. The change law of beam flexural strength along with the concentration of sulfate solution was analyzed. The analysis results show that the concrete by blending minerals can effectively improve the erosion performance of sulfate solution. The normal section flexural strength decreases as the concentration of sulfate solution increases. The larger the concentration of sulfate solution is, the more the normal section flexural strength reinforced concrete beam by blending minerals is improved. On the basis of experiment, a practical calculation formula of normal section flexural strength of reinforced concrete beam considering blending minerals and concentration of sulfate solution was proposed, and the calculation values are consistent with experimental results.

Keywords:coal ash; slag; sulfate solution; reinforced concrete beam;  normal section flexural strength

*國(guó)家青年科學(xué)基金項(xiàng)目(51408378)。

作者簡(jiǎn)介：賈磊, 博士研究生, 副教授，Email:jiali1978@126.com。

參考文獻(xiàn)

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