Experimental Study on Diffusion Effect of Grouting in Medium Sand Medium
In order to study the diffusion effect of grouting materials in medium sand medium,a grouting system was designed,ordinary silicate 42.5R cement(OPC),cement-water glass double grout(C-S),fly ash cement(FPC)and early strength cement slurry(ESAPC)were selected to carry out the grouting diffusion test.The maxi-mum diffusion radius and grouting amount of grout were measured,and the influence of different water-cement ratio,water glass baume degree,grouting pressure radius and fly ash content on grout diffusion was systematically discussed.The results show that the diffusion effect of OPC grout in medium sand is more obvious with the in-crease of water-cement ratio.The diffusibility of OPC grout is different from that of FPC grout with water-cement ratio,and the diffusibility of slurry veins in medium sand medium increases with the proportion of fly ash.Under the same working condition,the diffusion radius of OPC and ESAPC grout is almost equal.The diffusion effect of cement-water glass double grout is much lower than that of OPC grout.The water-cement ratio can significantly affect the diffusion distance of slurry and the amount of grouting.The grouting pressure has little effect on the dif-fusion radius and grouting quantity of the slurry.
medium sand mediumgrouting diffusiongrouting pressure
万方数据
维普
