Bridge bearing grouting material to distinguish good or bad

Bearing grouting quality bearing grouting material price support grouting material, grouting material manufacturer first come into contact with a lot of bearing customers have such doubt, how to distinguish the bridge bearing grouting material ( Also called bearing mortar) The quality is good or bad? How to choose the pedestal mortar manufacturer? Support even don't quite understand the difference between the slurry and grouting material, in order to make solid steady customers consultation can be more clear whether your choice of bridge bearings mortar in line with their own construction of bridge bearing grouting material quality letter get answers brand solid stability building materials for you. Bearing grouting material is mainly used for high-speed rail projects, to the foot screws and bearing need to support, anchor bolt ( Anchor bolt) , the vibration is larger. , the quality of the grouting material, in order to ensure the bearing pedestal mortar when use need to quality inspection, so what is the bearing mortar test standard? How to determine whether the product quality meet the national quality requirements?     Bridge bearing grouting material inspection standards: the & # 8195;   1, bearing mortar with high quality special cement as base material, USES the many kinds of inorganic and organic functional materials of composite modified cement mortar.     2, support slurry water cement ratio should not exceed 0. 15, more than that the moisture is too large, and the quality is not qualified.     3, the requirement of the fluidity, fluidity is not less than 320 mm, no bleeding phenomenon, no separation, no segregation.     4, support mortar strength requirement, the compressive strength is not suitable for 24 hours for 20 mpa.     5, the requirements of the inflation rate, 28 hours free expansion rate at 0. 02% & # 12316; 0. 1%.     Methods: bridge bearing grouting material construction & # 8195;   1, basic level processing: remove floating dust, grease and other unfavorable to glue the miscellaneous, 12 hours before construction should be fully wetting with water at the grass-roots level, grouting time guarantee no MingShui at the local level.     2, before the grouting should be set template and check the sealing, prevent leak slurry during grouting and grouting quality.     3, the large amount of forced mixer mixing: can be used in accordance with the recommended water metering well water, mixing water standard is 15% 17%, stir in about three-quarters of the water first 1 & # 12316; 2 minutes, add the remaining water continue to stir until smooth, the mixing time control within 5 minutes. A mixing amount of unfavorable and overmuch, used up to 20 minutes advisable.     4, volume is small can use hand electric drill: stir to mix water and about three-quarters of material into the barrel, stir for 1 minute then pour the remaining material after stirring until smooth, according to the power of the hand electric drill and rotational speed, the mixing process takes about 5 & # 12316; For 10 minutes.     5, stir well after grouting material if the surface has a large number of air bubbles, should let stand 1 & # 12316; Stay for 2 minutes, bubble elimination after grouting.     Maintenance: the & # 8195;   1, after the grouting, the surface touch dry, water moisture curing of initial setting.     2, should be in the winter maintenance construction besmear to brush immediately after the completion of concrete curing the seam an agent, covering plastic film and heat preservation rock wool or grass grid and moist.     Zhengzhou building materials co. , LTD. Is a collection research and development, production, sale and application of high-tech enterprises, specializing in special dry mortar and cement base and the development of the seam an agent, and related technical services, engineering consulting, etc. ​