Tianquan concrete powder liquid accelerator manufacturers

Liu: 13520568044 Product Description: Standard: JC / 477-2005 "sprayed concrete with accelerator" accelerator can be widely used in sprayed concrete and mortar projects. It is used for national defense, railway, metallurgy, coal, hydropower and other sectors underground engineering and tunneling, rock excavation and lining support seam after mining. Supporting more general and concrete pouring, it can speed up the construction speed, reduce engineering costs. Accelerator is a powdered concrete, mortar admixtures, has quick-setting cement rapid hardening effect, adding appropriate accelerator of cement paste hardens and quickly, with high early strength and late growing strength, and can keep other properties of the cement. Shotcrete construction method is an indispensable additive. You can achieve in concrete roadway repair or rapid coagulation purposes to ensure require special construction. Shotcrete accelerator with concrete, mortar wet spray process of supporting products, with small dust, low rebound resilience and good workability. Effect of accelerator on the early strength of concrete depends largely on its own chemical composition, dosage, chemical composition of cementitious materials, which contain mineral additives and temperature. Play a role because they are within a certain range of cement chemical composition, in order to test the adaptability of accelerator and determine a reasonable dosage is determined in the case of the compatibility of different construction cement and accelerator it is necessary. Performance: ★ Appearance: white powder; ★ alkali metal content <1%, non-toxic, tasteless, non-irritating; ★ fineness: 80μm hole sieve, sieve residue of less than 10%; ★ high early strength concrete jet, its 28 day-old preservation rate of compressive strength 80-100%; ★ paste cohesiveness good, no corrosion of steel role in enhancing the impermeability grade, quick coagulation, a spray thickness, spray arch up to 130mm, wall spray can up to 200mm or more; ★ initial setting ≤5min, final setting ≤10min; ★ 1 day compressive strength ratio ≥7%, 28-day compressive strength ratio ≥70%. Construction Technology: ★ when used according determine appropriate dosage (usually 3-5% by weight of cement) incorporation. There are incorporated into the shotcrete method and the first increase after two plus: the former is the accelerator and cement, sand, gravel, dry mix together, and then transported to the inner jet is injected; the latter is the accelerator uniform be added to the feed belt, and the mixture was added to the Jets fight together, or the accelerator uniformly is injected directly into the inner jet. Stop time interval as short as possible, so as not to absorb moisture accelerator aggregate, resulting in condensation ahead, affecting project quality. ★ Please do not add to the product at the time of mixing of materials, due to gravel, sand contains a lot of water, within the short time absorption accelerator, when it is not quick-setting jet exploded its ingredients affect the setting time, lower the concrete strength, will lead to ejection Concrete adverse effects. Before using cement should be used for projects with a test trial varieties, selected content, the only large-scale use. Expired can not be used to store cement, cement does not meet national standards can not be used. Of the accelerator requires proper care to prevent moisture caking failure. Strengthening early water conservation to ensure the late strength. Strictly good water-cement ratio. Leakage of water seepage engineering dosage must be increased. Recently, in the field of sprayed concrete accelerator there are some new trends, mainly aimed at improving the performance of the wet and dry mix concrete. Using Admixture control cement hydration, to extend the initial setting time, which is conducive to long-distance transport of commercial concrete. Use accelerators destroy reaction plasticizer in the wet mix process, a sudden increase in the hardness of the water slurry which is a new market direction. Shotcrete, was originally a small amount of special concrete, are now widely used in supporting and repairing underground infrastructure. Packaging and storage: ★ 50kg woven bag can be customized according to customer requirements Packing. ★ should be in the room cool, dry, well-ventilated place, can be stored in sub-zero environments. ★ initial setting time 2-4min Final setting 4-8min. ★ dosage of 3-5% cement content is generally 4% cement ratio of 0.4. ★ incorporation of this agent one day compressive strength of 8.8Mpa, 28-day strength can be maintained is not mixed with those of more than 80%. ★ cement setting time influenced by the temperature, 20 ℃ general temperature is 20 ℃ lower than the dosage may be increased. Application Techniques: ★ various accelerator for cement there Adaptability, cement used in construction must be suitability before use, to determine the optimal dosage. ★ construction, should strictly control the water-cement ratio between 0.3 to 0.5, water-cement ratio is too large to affect the results. ★ incorporating the present accelerator of concrete with the mix with dry spices with its stacking time is not more than two hours, otherwise, not only affects the accelerator effect, but will reduce the strength of sprayed concrete. ★ incorporating the present accelerator of concrete projects, we should strengthen the early conservation to ensure the smooth progress of the hydration reaction, in order to reduce the lowering of the late strength. ★ cement stored for too long or poor construction shall be appropriate to increase the dosage. Packaging and storage: ★ This product packed in woven bag lined with plastic film, the weight of 50 ± 0.5kg / bag. ★ can not rain, mainly moisture. ★ This product should be placed on ventilation