884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（中交一公局第七工程有限公司， 鄭州 451452）

［摘要］為了探究水膠比、粉煤灰摻量、煤矸石摻量和玻璃纖維摻量對(duì)混凝土抗壓、劈裂抗拉和抗裂性能的影響，設(shè)計(jì)了四因素四水平正交試驗(yàn)。分析結(jié)果表明：各因素對(duì)混凝土抗壓強(qiáng)度影響程度為水膠比＞煤矸石體積比例＞粉煤灰質(zhì)量濃度＞纖維質(zhì)量濃度，粉煤灰摻量20%、纖維摻量0.1%時(shí)混凝土抗壓強(qiáng)度達(dá)到最佳；各因素對(duì)混凝土劈裂抗拉強(qiáng)度影響程度為水膠比＞纖維質(zhì)量濃度＞粉煤灰質(zhì)量濃度＞煤矸石體積比例，粉煤灰摻量20%、纖維摻量0.2%時(shí)混凝土劈裂抗拉強(qiáng)度達(dá)到最佳；各因素對(duì)混凝土抗裂性能影響程度為纖維質(zhì)量濃度＞水膠比＞粉煤灰質(zhì)量濃度＞煤矸石體積比例，粉煤灰摻量30%、纖維摻量0.3%、煤矸石摻量15%時(shí)混凝土抗裂性能達(dá)到最佳。

［關(guān)鍵詞］玻璃纖維；  煤矸石骨料混凝土；  抗壓強(qiáng)度；  劈裂抗拉強(qiáng)度；  抗裂性能；  正交試驗(yàn)

中圖分類號(hào)：TU528-572文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)13-0049-05

Experimental study on strength and crack resistance of coal gangue aggregate concrete mixed with glass fiber and fly ash

LI Wenlong

(The Seventh Engineering Co., Ltd. of CFHEC， Zhengzhou 451452， China)

Abstract:In order to explore the effects of water-binder ratio, fly ash content, coal gangue content and glass fiber content on concrete performance of compression, splitting tensile and crack-resistance, the four factors and four levels orthogonal test was designed. The results shows that the influence of each factor on the concrete compressive strength is water-binder ratio＞coal gangue volume ratio＞fly ash mass concentration＞fiber mass concentration, the concrete compressive strength is best when the content of fly ash is 20% and the fiber content is 0.1%. The influence of each factor on the concrete splitting tensile strength is water-binder ratio＞fiber mass concentration＞fly ash mass concentration＞coal gangue volume ratio, the concrete splitting tensile strength is best when the content of fly ash is 20% and the fiber content is 0.2%.The influence of each factor on the concrete crack-resistance is fiber mass concentration＞water-binder ratio＞fly ash mass concentration＞coal gangue volume ratio, the concrete crack-resistance is best when the content of fly ash is 30%,the fiber content is 0.3% and the coal gangue content is 15%.

Keywords:glass fiber; coal gangue aggregate concrete; compressive strength; splitting tensile strength; crack-resistance; orthogonal test

作者簡介：李文龍，學(xué)士，工程師，Email:lwl519@163.com。