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（內(nèi)蒙古科技大學(xué)土木工程學(xué)院， 包頭 014010）

［摘要］對不同摻量塑鋼纖維增強(qiáng)的橡膠混凝土進(jìn)行抗壓強(qiáng)度、抗拉強(qiáng)度、抗折強(qiáng)度、彎曲韌性、抗沖擊性能以及耐磨的試驗研究，分析塑鋼纖維摻量變化對橡膠混凝土路用性能的影響。試驗表明：塑鋼纖維摻入到橡膠混凝土中，有助于提高橡膠混凝土的抗壓強(qiáng)度、抗拉強(qiáng)度、抗折強(qiáng)度、拉壓比及折壓比，隨著塑鋼纖維摻量的增加呈先提高后減小的趨勢；摻入塑鋼纖維后橡膠混凝土的彎曲韌性提高顯著，存在最優(yōu)摻量；塑鋼纖維橡膠混凝土的沖擊性能大幅度提高；耐磨性能隨著塑鋼纖維的摻入而不斷增強(qiáng)。綜合多方面考慮，宜摻6～8kg/m3塑鋼纖維。

［關(guān)鍵詞］橡膠混凝土； 塑鋼纖維； 路用性能； 試驗研究

中圖分類號：TU528-041文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)12-0098-05

 Experimental research on pavement performance of rubber concrete incorporated with plastic-steel fiber

Xue Gang, Hou Shuai, Niu Jiangang

(School of  Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)

Abstract:Experimental research on the impact of different proportions of plastic-steel fiber on the compressive strength, tensile strength, flexural strength, bending toughness, impact-resistant and wear-resistant performance of rubber concrete was carried out to analyze the impact of different proportions of plastic-steel fiber on pavement performance of rubber concrete. The experiment showed that the mixture of plastic-steel fiber into rubber concrete can be helpful to the improvement of the compression strength, tensile strength, flexural strength, tensile-compression ratio and flexural-compression ratio of rubber concrete. It presents the tendency of first increase and later decrease with the increase of the addition amount of plastic-steel fiber; the flexural toughness of rubber concrete after mixing the plastic-steel fiber is obviously improved and the optimal mixing proportion exists; the anti-impact of rubber concrete incorporated with plastic-steel fiber gets greatly enhanced; and its wear-resistant performance is constantly strengthened with the addition of plastic-steel fiber. Based on the result, the dosage of plastic-steel fiber should be controlled within 6～8kg/m3.

Keywords:rubber concrete; plastic-steel fiber; pavement performance; experimental research