Concrete early strength agent

BQW-10 series early strength agent is a non-chlorine salt early strength agent, for use in concrete, reinforced concrete and prestressed concrete projects and members, improve the early strength concrete effect significantly shorten the construction period, increase production, improve the template turnover and reduce energy consumption, save cement. BQW-10 series is divided into three varieties of early strength agent: BQW-10 (common type), BQW-10 (heavy duty), BQW-10 (early strength composite pumping type). The main technical indicators: the implementation of standards GB8076-2008 "concrete admixtures." ● BQW-10 early strength ordinary type 1, the appearance of dark brown powder content of 2% to 3% the amount of cement. 2, concrete incorporation of the agent, one day strength increased by 70%, 3 days, 7 days strength increased by 40% to 50%, 28 days strength also increased more than 5%. Blank standard curing concrete strength of 70% 28 days maintenance period can be shortened by 50% to 60%. 3, the agent can enhance the impermeability of the concrete, and can be increased by 2 times minus three times. 4, the agent for cement has better adaptability, concrete and mortar setting time is slightly shortened. 5, mixed with this agent on the durability of concrete and reliable, no corrosion of steel role. ● BQW-10 highly efficient type 1 early strength, the appearance of a pink powder, the amount of cement content is 2% -3% 2, water-reducing rate of 14% to 20%. 3, setting time 60-90 minutes. 4, mixed with this agent early strength concrete and reinforcing effect is obvious: 1 day to 3 days increased by 70% -80%, 7 days increased by 40% -60%, 28 days increase 10% -20%, shorten curing asked 60 %. 5, cement adaptability, improved durability of concrete, in the case of diminished water can improve concrete slump. 6, no corrosion of steel role. ● BQW-10 compound early strength pumping type: 1, the appearance of a pink powder or brown liquid, dosage is 3% of cement content. 2. Water Reduction: 8-12%. 3, setting time: Slight delay. 4, the incorporation of the curing agent at a temperature of 5 ℃ -15 ℃, the three days to meet the design compressive strength of 50%, five days to meet the design strength of 90% to 100%; in support seven days to meet the design strength of 90% -100% . Late strength increased by 20%. 5, no corrosion of steel role. 6.50 freeze-thaw qualified. Second, the main purposes: 1, BQW-10 series early strength agents are mainly used in concrete construction in winter and the need to improve the early strength of the project. 2, applies to the average ambient temperature within the working range of 0 ℃ -15 ℃. Winter when the temperature is 0 ℃, minimum of -5 ℃ case, the agent can prevent Concrete frost damage, improve the early strength. Third, the product uses: 1, the product directly to the cement, sand, stone and other materials into mixer mixing together, in order to ensure uniform dispersion, mixing time be extended one minute to 2 minutes. 2, cold season should strengthen the insulation (eg covering straw bags, plastic film), high temperature early wet season should strengthen conservation. 3, BQW-10 (highly efficient type) incorporated in concrete, water conservation must be the first three days. 4, slump to meet the construction needs of the case, to minimize the water-cement ratio, to ensure the strength of the growth rate. 5, important structures demolished before the end of the mold, to test blocks of concrete pressure test before form removal after passing. Fourth, the product packaging: 1, and lined with two layers of woven bag, net weight 40-50kg ± 0.5kg. 2, stored in dry warehouse, it must not get wet. 3, shelf life is 12 months. 4, if found to have lumps, crushed into powder through before use.