Preparation and key properties of C125 ultra high performance grouting material for offshore wind power
The effects of water binder ratio,cement sand ratio,silica fume and viscosity reducing enhancer content,compound admix-ture content and UWB-Ⅱ content on the fluidity,delamination,compressive strength,water land strength ratio and suspended matter con-tent of C125 offshore wind power grouting material were studied.The results show that the water binder ratio is positively related to the flu-idity,delamination and suspended matter content of the grouting material,and negatively related to the compressive strength and water land strength ratio of the grouting material.The cement sand ratio is positively correlated with the compressive strength and water land strength ratio of the grouting material,and negatively correlated with the fluidity,stratification and suspended solids content of the grouting material.Silica fume can improve the compressive strength and water land strength ratio of the grouting material,reduce the stratification and the content of suspended solids,and also reduce the fluidity of the grouting material.The viscosity reducing and reinforcing agent can improve the fluidity,strength and water land strength ratio of the grouting material,but it will increase the stratification degree and sus-pended solids content of the grouting material.The compound admixture can improve the fluidity of the grouting material,but it will reduce the strength of the grouting material and the water land strength ratio.UWB-Ⅱ can improve the water land strength ratio of the grouting ma-terial,reduce the stratification and suspended solids content,but reduce the fluidity and strength of the grouting material.When 1∶1 cement sand ratio,0.11 water binder ratio,8%silica fume and 8%viscosity reducer are added,1%composite admixture and 1.5%UWB-Ⅱ are added,the performance of the grouting material is the best.At this time,the initial and 30 min fluidity of the grouting material are 350 mm and 330 mm respectively,the layering degree is 2.4 mm,the land strength is 50.3 MPa and 137.2 MPa respectively at 1 d and 28 d age,the water land strength ratio is 98.6%at 28 d age,and the content of suspended solids is 55 mg/L.
C125 offshore wind power grouting materialfluiditystratificationwater land strength ratiosuspension contentsilica fumeviscosity reducing reinforcing agent
万方数据
维普
