Yan'an strength non-shrink grout material factory direct micro-expansion

High-strength non-shrink grout material strength non-shrink grout material with a high strength material as an aggregate, with a high standard cement as a binding agent, supplemented by high flow, micro-expansion, anti-segregation and other substances from the preparation. High-strength non-shrink grout material characteristics 1 early strength, high strength 1 day compressive strength ≥20Mpa; 3 day compressive strength ≥30Mpa; 28-day compressive strength ≥65Mpa. 2, close contact between the micro-expansion to ensure that the equipment and infrastructure, the second filling of no contraction. 3, gravity high fill all the gaps, meet the requirements of secondary grouting equipment. 4, durability million times by 50 freeze-thaw cycle fatigue test experiments no significant changes in intensity. 30 days immersed in the oil intensity has improved significantly. 5, winter construction -10 ℃ temperatures allow for outdoor construction. High-strength non-shrink grout uses 1, for equipment foundation secondary grouting. 2, for the anchor bolts and steel plant buried. 3, for the reinforcement and repair of concrete structures. 4, for the reinforcement beams cross-section increases. Implementation of standards GB / T50448-2008 preparation of a pre-construction, machine mixing: concrete mixer or mortar mixer. 2, manual mixing: mixing tank and shovel several. 3, several buckets. 4, several scales. 5, mix tank. 6, high funnel, filling pipes and pipe fittings. 7, grout boosters. 8. template (steel, wood mold). 9, straw, rockwool and so on. 10, cotton yarn, tape. Grouting in the first step: basic treatment 1, the base surface should be cutting hair treatment, or the use of special reinforcement interface agent J-302 and then pouring concrete interface treatment agent to do. 2, clean base surface, may not have gravel, floating pulp, floating dust, grease and mold release agents and other debris. 3, filling before 24h, the surface should be fully wet basis, before filling 1h, remove stagnant water. Step two: formwork 1, according to construction plans grouting support provided template. Water and mud seams (recommended 901 rapid plugging agent) and basic template, the template and the template between the sealing seam tape, etc., to the extent that the overall template watertight. 2, the horizontal distance between the template and equipment around the base should be controlled at about 100mm, in order to facilitate grouting construction. 3, the top of the template level should be higher on the device surface of the base 50mm. 4, filling in as running plasma phenomena occur, promptly. The third step: the preparation of a filling material, general use reinforced by 13-15% standard add water and stir, pisolite reinforced by 9-11% standard add water and stir. 2, recommended the use of mechanical mixing method, mixing time is generally 1-2min (do not touch the drill mixer). Artificial agitation, should be added to water 2/3 mixing 2min, followed by adding the remaining water and stir until uniform. 3, each time stirring the amount of usage depending on how much should be given to ensure that the material used up within 40min. 4, when field use, is strictly prohibited in filling compound mixed with any additives, admixtures. Step Four: grouting construction method, longer equipment or track basis, should be segmented construction. 2, several commonly used grouting methods: (3) the secondary grouting shall meet the following requirements. ① secondary grouting, should one or both sides of the adjacent multi-grouting, until the other side to overflow, in order to facilitate the filling process of the exhaust gas. Grouting shall simultaneously from four sides. ② after filling begin, it must be continuous without interruption. And filling time as short as possible. ③ non-vibrated during the grouting process. If necessary, and push boosters filling grout grouting material along the bottom layer, is prohibited from filling layer, the upper push to ensure homogeneity of the grout layer. ④, after the equipment foundation grouting is completed, should cut out along the edge of the machine in 3-6h after filling 45 degree angle to prevent the free end of the cracks, such as trimming process can not and should 3-6h after filling with a spatula after The grout layer surface pressure light. ⑤, when the grout layer thickness of more than 150mm, should pisolite reinforced high-strength non-shrink grout. ⑥, grout base when the device is large, stirring pisolite reinforced grout should be used mechanical mixing method, in order to ensure grouting construction. Step five: Maintain 1, immediately after filling should be finished within 30min wet stamped straws or rockwool, and kept moist. 2, winter construction, conservation measures should also comply with the current (GB50204) the relevant provisions. 3, grout reach demolition film time, equipment can be installed, the specific time see "The Hurt film and the curing time and ambient temperature of relational tables." 4, after the equipment foundation grouting is completed, if you want to eliminate part in 3-6h after filling is complete, that is, before hardening grout layer lightly with a spatula or shovel to eradicate tool. 5, may not be rotating machine vibration transmitted to the device, based grout should be shut down after the second 24-36h, so as not to damage the outstanding hard grout layer. Packaging and storing 1, packaging specifications: 50kg ± 0.5kg / bag, stored in a dry place and prevent direct sunlight. 2, the shelf life of six months, before being used beyond the shelf life should recheck qualified. 3, does not contain benzene, halogenated hydrocarbons, formaldehyde, heavy metals and other ingredients, non-toxic, tasteless, non-polluting, non-flammable non-explosive, according to general cargo transport.