水镁石纤维混凝土在农村公路工程中的应用研究

发布时间：2019-06-04 21:13

【摘要】：进行了水镁石纤维混凝土农村公路路面工程应用试验,研究了低水泥标号、低水泥用量情况下水镁石纤维混凝土性能的影响因素,筛选了最佳混凝土配合比,并进行了混凝土路面施工。研究发现,在低水泥标号、低水泥用量情况下水镁石纤维混凝土的性能仍能满足农村公路工程技术要求,且应用效果良好。水镁石纤维混凝土施工工艺与普通水泥混凝土路面基本相同,与无纤维的普通混凝土相比,水镁石纤维水泥混凝土中水泥用量大幅度减少,混凝土抗折强度高,材料成本降低。影响水镁石纤维水泥混凝土性能的主要因素有:水灰比、矿粉掺量、集料级配、胶凝材料及纤维膏用量等。试验表明,较小的水灰比、较大的胶凝材料和纤维膏用量、掺加矿粉,采用合适的集料搭配等,均有利于混凝土强度的提高。
[Abstract]:The application test of brucite fiber reinforced concrete (brucite fiber reinforced concrete) rural highway pavement engineering is carried out. The influencing factors of brucite fiber reinforced concrete performance under the condition of low cement grade and low cement content are studied, and the optimum concrete mix ratio is selected. The concrete pavement construction is carried out. It is found that the properties of brucite fiber reinforced concrete can still meet the technical requirements of rural highway engineering under the condition of low cement grade and low cement content, and the application effect is good. The construction technology of brucite fiber reinforced concrete is basically the same as that of ordinary cement concrete pavement. Compared with ordinary concrete without fiber, the amount of cement in brucite fiber reinforced concrete is greatly reduced, the bending strength of concrete is high, and the material cost is reduced. The main factors affecting the properties of brucite fiber cement concrete are water-cement ratio, mineral powder content, aggregate gradation, cementitious material and fiber paste content. The test results show that the small water-cement ratio, the larger amount of cementitious material and fiber paste, the addition of mineral powder and the appropriate aggregate mix are all beneficial to the improvement of concrete strength.
【作者单位】：长安大学材料科学与工程学院;陕西省铜川公路管理局;陕西盛泰混凝土工程有限公司;陕西省交通建设集团公司;
【基金】：西部交通建设科技项目,项目编号200831881263
【分类号】：U414

【参考文献】