Drilling grouting material research and development of new products

Drilling grouting material in the construction of the mine, many construction very deep wellbore by drilling method, in order to meet the wall stress and drilling technological requirements, C50 - general design requirements C90 of precast reinforced concrete wall. Site construction, will use the site to do for the preparation of high performance, often early cracking problems. Construction technology co. , LTD. , suggest the mine construction unit, adopt the special wellbore thin-wall shaft grouting material for the construction of this type of grouting material has the following characteristics: 1, the grouting material with a large amount of mineral admixtures, their incorporation, can reduce the hydration heat, and makes the workability of grouting material, improve the late strength, can the space of gelled material, improve the internal structure, participate in the hydration reaction of gelled material, improve the grouting material corrosion resistant ability, and also can inhibit JianJiLiao response; 2, the use of nanoscale materials, very fine particles, hydration soon, to ensure the strength of the grouting material in each age is very high; 3, the compact structure of grouting materials, waterproof effect is good, internal holes; Day 4, high early strength, compressive strength can reach 30 mpa, grouting material casting after 24 hours, can dismantle templates, greatly improve the work efficiency. Drilling borehole wall is composed of casing tube and the bottom of the borehole wall. Wall tube consists of borehole wall connected to several sub. Each sub wall and bottom of the wall on the surface of the precast, for well meet the design, diameter and depth by section in the mouth of the well connected well, suspended in the upper portion of the drilling hole filled with mud, and timely and right amount water, make its slow piecewise sinking, sinking to a predetermined depth, inject grouting material for filling in the wall, the wall with the surrounding rock consolidation.