Optimization of Casing Mix Ratio for Sleeve Valve Pipe Grouting
The quality of casing material is the key to the success of sleeve valve pipe grouting.In order to determine the optimal mix ra-tio of casing material suitable for sleeve valve pipe grouting,laboratory tests were carried out under different proportions of water,ce-ment,bentonite,water glass and other materials,and casing material's microstructural analysis is conducted.The water-cement ratio has the most significant effect on the compressive strength of casing material,and the higher the water-cement ratio,the lower the com-pressive strength of casing material.Bentonite and sand can improve the early compressive strength of casings to a certain extent,but have little effect on the later strength.The smaller the water-cement ratio is,the shorter the initial and final setting time of casing mate-rials,and the water glass is more significant in shortening the final setting time of casing materials.The content of bentonite and the presence of sand have no effect on the setting time of casing material.
sleeve valve pipe groutingcasing material mix ratiocompressive strength
万方数据
维普
