半柔性混凝土路面水泥浆料的研发与性能评价

Development and Performance Evaluation of Cement Slurry for Semi-flexible Pavement

目的研发半柔性混凝土路面水泥浆的配合比并对其性能进行评价.方法鉴于影响水泥浆性能的因素众多,因此采用均匀设计法作为试验方法,进行不同配合比的水泥浆的性能测试试验,并且和目前商用的水泥浆的流动度和抗压抗折强度进行对比试验.采用统计软件对水泥浆的流动度和抗压抗折强度试验结果进行回归分析.结果商用的水泥浆流动度在36.0 s,不符合目标值的要求,而研发的水泥浆料具有更好的流动性,满足施工使用的要求.提出了最佳水灰质量比0.41,相较于商用的0.34的水灰质量比,0.41的水灰质量比能够减少水泥用量,从而降低半柔性混凝土路面的造价成本.结论研发的水泥浆与商用的半柔性混凝土路面材料性能对比具有更高的流动性和比较合适的抗折强度和抗压强度.

The proportion of cement slurry for semi-flexible concrete pavement is researched and the corresponding performance evaluation is carried out.In view of the many factors affecting the performance of cement slurry,the uniform design method is used as the test method,and the performance test of cement slurry with different mixing ratios is carried out,moreover,the fluidity and compressive flexural strength of the currently commercial cement slurry are compared.The statistical analysis was used to analyze the fluidity and compressive flexural strength test results of cement slurry.The commercial cement slurry has a fluidity of 36.0 s,which does not meet the target value.The cement slurry developed has better fluidity and basically meets the requirements of construction use.The optimum water-cement mass ratio of 0.41 is proposed.Compared with the commercial water-cement mass ratio of 0.34,the water-cement mass ratio of 0.41 can reduce the amount of cement,thus reducing the cost of semi-flexible concrete pavement.By comparing with the properties of commercial semi-flexible concrete pavement materials,it can be concluded that the cement slurry developed has higher fluidity and more suitable flexural strength and compressive strength.