Guangxi high-strength non-shrink grout

H-40 early-strength non-shrink grout First, use 1, 2 secondary grouting equipment installation, installation of steel column base 3, various machinery electrical equipment without the installation of mobile filling horn 4, column-based grouting rock bolt anchor based grout 5, anchor frame joints connected, bridge joints reinforcement 6, grouting post-tensioned precast, prestressed bridge pouring 7, column reconstruction concrete slab foundation of reinforced walls together and repair Second, the technical characteristics 1, grout early strength and high strength materials: equipment installation to run three days after the production is finished. 2, grouting material gravity state: the scene just add water and stir, and directly poured into the device basis, without vibrating equipment foundations can fill all voids. 3, grouting material micro-expansion: to ensure close contact between the equipment and infrastructure. 4, grouting material no rust, anti-oil seepage. 5, grouting material durability: 200 million times fatigue test, 50 freeze-thaw cycle experiments no significant changes in intensity. 6, grout weather resistance -40 ℃ ~ 600 ℃ long-term safe use. Third, test indicators (implementation of the standard: JC / T986-2005) Fourth, the construction of a brief introduction, the construction should be prepared before filling a blender, filling equipment, templates and maintenance items. Second, when the second filling level of the template and equipment around the base of the distance should be about 100mm; the top of the template should not be lower than the elevation of the device surface of the base 50mm. Third, the transformation of reinforced concrete structure, template support should allow sufficient filling hole and vent, filling aperture of not less than 50mm, spaced not more than 1000mm. Fourth, cement-based grout material mixing, water should be added in accordance with the product requirements of water. Should adopt mechanical mixing. When mixing water mixing advised added about 2/3 3min, then add the remaining water until uniform mixing, stirring time not less than 5min. Mixing should be close to the filling site location, and to ensure the continuity of grout. The amount of time mixing depending on use and how much should be to ensure that the material used up within 30min. Unused portion not add water and stirred. Fifth, the anchor bolts filling: ⑴ bolt into the hole, the bolt hole wall roughness should clean the hole, not a floating dust, oil and other impurities, soaked in water before filling 8 ~ 12h, remove the hole accumulated inflammation . Oil and rust should be removed before bolt surface ⑵ grouting. When ⑶ the good mixing cement-based grouting material poured into the bolt holes, can adjust the position of the bolts as needed. Filling process is strictly prohibited vibrators, may be appropriate interpolation pound, after the grout may not adjusting bolt again. Sixth, equipment foundation secondary grouting: ⑴ before grouting, foundation surface of the concrete floor and equipment should be in contact with the grout clean, not a loose gravel, floating pulp, floating dust, oil, wax and the like. Grouting before 24h, the foundation concrete surface should be thoroughly wetted before filling 1h, remove stagnant water. When ⑵ secondary grout, grout should be one side, the other side until it overflows, grouting and shall not from opposite sides. After filling start, it must be continuous, and filling time as short as possible. ⑶ When the track foundation or grout long distance, depending on the actual situation can be segmented construction project, each length should not exceed 5 meters. The apparatus has a complicated structure base plate, pressure grouting should be adopted. ⑷ prohibited during the grouting process vibrators may be used, if necessary filling booster boosters along the flow direction of the end of treatment slurry grouting material to promote, is prohibited from filling layer, the upper push. After ⑸ equipment foundation grouting is completed, it should be in the initial setting after grouting material along the bottom edge of the 45 ° bevel cut to outsiders, such as trimming can not be treated should be in the initial setting of the grout layer surface with a spatula calender. Seven, renovation and reinforcement of concrete structures grout: Concrete cement-based grout material surface ⑴ contact should be fully cutting hair. ⑵ structural defects in concrete repair, concrete should be removed to expose the loose and it reinforced the repair area cut into the edge vertical shape. Remove any gravel, dust or other debris before ⑶ grout and concrete surfaces wet grass. ⑷ uniform mixing of the grout poured into the template and tap the appropriate template. When ⑸ grout layer thickness is greater than 150mm, should take measures to prevent temperature cracks. Eight, the construction of conservation measures: ⑴ grouting, Riping uniform temperature should not fall below 5 ℃, the exposed part of grout should be promptly after spraying curing agent or covered by plastic film, sealed wet straw bags to keep moist. When using plastic film covering the exposed surfaces of cement-based grouting material should be covered tightly, holding a plastic film has a condensate. When the grout surface inconvenience watering can spray curing agent. ⑵ grouting material should be kept in a wet state, the curing time of not less than 7d. ⑶ When using rapidly solidified rapid hardening cement-based grout material, conservation measures should be performed according to the method of product requirements. ⑷ winter construction, when the ambient temperature is below -5 ℃, hot water mixing grout should be used, the water temperature between 50 ~ 70 ℃, in order to ensure the grout into the mold temperature is higher than 5 ℃. Works on the strength of growth no special requirements, after completion of the exposed part of filling should be covered with plastic film and stamped insulation materials. Initial curing temperature should not fall below 5 ℃. When negative temperature curing condition can not be watered. After ⑸ Chaimo poor cement-based grouting material surface temperature and ambient temperature greater than 20 ℃, it should be covered with insulation material conservation. ⑹ If the ambient temperature is lower than cement-based grouting material required minimum application temperature or the intensity of the need to accelerate growth, we can use artificial heat curing methods; conservation measures should be consistent with existing national standards "building construction procedures winter period" of the relevant provisions of JGJ104. Fifth, packaging, storage 1, grout is plastic woven packaging specifications for 50 kg / bag. 2, grout unopened, should be stored in a dry, cool, ventilated place packaging. Under normal storage and transport conditions, shelf life of 12 months.