SPC superfine cement grouting is Three Lions special cement company and Zhejiang University jointly developed a special type of cement. Currently superfine varieties are double quick cement, superfine and ultrafine AEC expansive cement Portland cement. Cement ratio of surface area can be divided into three sizes: ①≥800m2 / Kg; ②≥900m2 / kg; ③≥1000m2 / kg, according to user needs to produce more than 1500m2 / kg and greater than 2000m2 / kg specific surface area of ??various special cement. After the Central Laboratory of the Department of Geology and Mineral Resources of Zhejiang Province detected, the minimum average particle size of ultrafine cement up 1.94UM, outside the specific surface area of ??up to 2140m2 / kg, product performance with leading domestic level. ? First, the scope? 1. Water conservancy dam cracks in the dam and grouting;? 2. Underground water pouring curtain, cut off water penetration, overall impermeability plugging;? 3. Strengthening and improving the mechanical strength of soft soil and rock, concrete structure repair and restore its integrity;? 4. Correct cracking dam and high-rise buildings due to ground instability caused by uneven subsidence caused by inclination; ???? 5. Roads, bridges, airport runways and other complementary ground subsidence pulp reinforcement;? 6. Various underground buildings pretreatment before excavation and drilling in complex geological formations drilled hole in the retaining solid wall, only Chung plugging and other projects;? 7. Quicksand layer of sand fixation and mucky soil consolidation of complex formation. ? Second, the product performance 1, setting time: 0.6 water cement ratio, the standard curing time, the initial setting no earlier than two hours, the final setting later than 12 hours. As there are special requirements for setting time, according to requirements. ? 2, the average particle diameter refers :( 50% by weight of average particle diameter) of less than 5mm, the maximum particle size of not more than 30mm. 3, superfine AEC expansive cement expansion: cement ratio of 0.6, according to JC311 / T standard test, 28 days cement mortar expansion at 0.02-0.05% limit. 4. Strength: cement ratio of 0.5, 1: 2.5 mortar, three, fine cement slurry characteristics:?? 1, the slurry solidification time: according to the project needs to be adjusted. ? 2, slurry stability: analysis of the slurry water is low, has good stability. ? 3, groutability: possession of naphthalene after adding appropriate agent, can reduce the slurry viscosity, improve mobility and groutability, can enter the fine slits and fine sand. 4, the slurry no shrinkage during curing phenomenon, high stone strength and durability. ? 5, the construction process the slurry is simple, easy to operate, can be large-scale use. Fourth, the typical construction examples? 1, Dayaoshan for Railway (Beijing-Guangzhou line) tunnel reinforcement grouting. ? 2, for the Qinshan Nuclear Power Station Foundation Consolidation Grouting. ? 3, with Wencheng high LINGTOU dam foundation grouting. 4, for the Xiaolangdi Water Control Project Filling cracks in concrete. Sales center: 400-039-1997 more details please visit the http://www.tzsn.cn