砂基透水混凝土路面砖胶结料试验研究

Experimental Study on Cementing Material of Sand-based Permeable Concrete Pavement Brick

研究自主研制的胶结料不同掺量、水灰比、集料级配及灰集比对砂基透水混凝土路面砖强度、透水性的影响,并通过室内试验测试试件保水性、抗冻性、耐磨耗性、抗硫酸盐-干湿循环侵蚀。先将自主研制的胶结料Ⅰ与3种同类型胶结料通过胶砂试验比选。结果表明:胶结料Ⅰ(28 d)抗压强度59.2 MPa、抗折强度9.3 MPa,优于同类型胶结料;胶结料Ⅰ掺砂基透水混凝土路面砖最优掺量为水泥质量的5%,其强度为35.6 MPa,透水系数为3.5×10^(-2)cm/s,并具有良好的保水性、抗冻性、耐磨耗性和抗硫酸盐-干湿循环侵蚀性能。

The influences of self-developed admixture with different contents, water-cement ratio,aggregate gradation and ash-aggregate ratio on the strength and water permeability of sand-based permeable concrete pavement bricks were studied,and test the water retention,frost resistance,wear resistance,resistance to sulfate attack and dry-wet cycles performance of the specimen through the indoor test. Firstly,compare the self-developed admixture I with three kinds of admixtures of the same type through the mortar test and choose the best. The results show that the admixture I（28 d） has compressive strength of 59. 2 MPa and bending strength of 9. 3 MPa,which is better than the same type of admixture; the optimal amount of admixture I with sand-based permeable concrete pavement is 5% of cement mass. The strength is 35. 6 MPa,the water permeability coefficient is 3. 5 × 10-（-2）cm/s,and it has good water retention,frost resistance,wear resistance and resistance to sulfate attack and dry-wet cycles.