CGM high holding rubber bearing grouting material Shear wall bearing grouting material construction scheme

Bearing grouting material installation pedestal grouting support grouting material manufacturers, China metallurgical construction research institute ( Shanghai) Co. , LTD. The main products are series products of CGM grout material, bearing grouting material series products, NVCGM resistance rust agent series products, NVCGM high-strength polymer mortar, NVCGM steel bar anchoring material, NVCGM self-leveling mortar, density of NVCGM seam an agent series products, etc. , have been sold to all provinces, municipalities and autonomous regions, widely used in high speed railway, metallurgy, petrochemical, electric power, coal, machinery, building, light industry, Marine engineering, road and bridge, environmental protection, municipal equipment, the structure reinforcement and repair in the field of countries such as serious engineering projects, has accumulated thousands of project performance, its excellent product quality and perfect technical service together by the customer high praise. A, product introduction support grouting material is a kind of early strength, high strength, micro swell grouting materials, the performance indicators in full compliance with the passenger dedicated line bridge pot rubber bearing interim technical conditions '( The base of science and technology ( 2005] No. 101) Appendix A of the technical requirements, has been successfully applied to zheng west, Shanghai and Beijing, Shanghai, shanghai-hangzhou and Shi Wu high-speed railway and the special line for passenger transport, apply to the pot rubber bearing plant for the simple box girders of prefabricated grouting, cast-in-place girder bridge pot rubber bearing, grouting, prefabricated multi-plate T beam pot rubber bearing grouting, etc. Second, product characteristics 1. Plastic swell and hardening swell dual effect, ensure the high effective bearing surface ( EBA） 2. Large activity, no segregation and no bleeding, good construction 3. Wide water scale, adjust the mixing water can be appropriate activity 4. Activity loss is small, long operation time 5. 2 h, the compressive strength is greater than 20 MPa, 24 h flexural strength is greater than 10 MPa three material, construction and maintenance support grouting solidification point 1. 24 h before construction should be the underlying energetic wetting, shall ensure that the underlying no MingShui when grouting; 2. Grouting should be good for template and check before sealing, prevent the course of grouting slurry, grouting quality; 3. Choose forced mixer mixing: according to the introduction in changchun CGM grout material water metering water price, first for about three-quarters of the water mixing 1 ~ 2 minutes, and then for the rest of the water for mixing evenly, the mixing time control within 5 minutes. A mixing volume shoulds not be too much to used up within 20 minutes advisable. 4. Use hand electric drill mixing: mixing water and the first three-quarters of material into the barrel, mixing 30 seconds and then pour the remaining material mixing evenly, based on the electric hand drill power and speed, the mixing process needs about 1 ~ 2 minutes; Evenly mixing the grouting material if there are a lot of bubbles appearance, should let stand for 1 ~ 2 minutes, after waiting for air bubbles eliminate again for grouting; 5. After grouting show part of the grouting material should be timely covering plastic film or wet sack for moisturizing maintenance, after waiting for grouting material hardening ( Requirements 1 at 20 ℃. 5 hours or so) Wet water maintenance to ensure that the grouting material appearance, maintenance time should not less than three days. 6. On the basis of site construction temperature is different, our company will be in accordance with the requirements of the customer support to adjust the formula of the grouting material. After the adjustment the product specification in the laboratory conditions, 20℃） Detection of condensation occurs faster or slower ( Site construction does not affect the infusion, and a suitable strength development speed) 。 7. Bearing strength of grouting material growth is closely related to the environmental temperature, winter construction should be chosen when mixing hot water and heat preservation maintenance and other necessary measures, in order to obtain better early strength. 8. You may refer to more specific construction guide 'series products of CGM grout material no shrinkage grouting material, to clarify the relevant provisions of the book.