Bridge bearing grouting material identification method

Bearing grouting, grouting material bearing bridge bearing grouting material manufacturer first come into contact with a lot of bridge bearing mortar 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 consulting solid steady customers can more clear whether your choice of bridge bearings mortar in line with their own construction of bridge bearing grouting material quality trustworthy brand solid stability building materials for your answer. 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 inspection standards? How to judge the quality of the products conform to quality requirements? Bridge bearing grouting material inspection standard: 1, support mortar with high quality special cement as base material, USES the many kinds of inorganic and organic composite functional materials of modified cement mortar. 2, support the water-cement ratio of mortar should not exceed 0. 15, more than that the moisture is too large, and the quality is not qualified. 3, fluidity, fluidity should not be less than 320 mm, no bleeding, no separation, no segregation. 4, support mortar strength requirement, 24 hours should not be less than 20 mpa compressive strength. 5, the requirements of the inflation rate, after 28 hours free expansion rate at 0. 02% ~ 0. 1%. Bridge bearing grouting material construction method: 1, the basic level processing: remove floating dust, grease and other unfavorable to glue the sundry, 12 hours before construction should be fully wetting with water at the grass-roots level, should guarantee the basic no MingShui grouting. 2, before the grouting should be set template and check the sealing, prevent leak slurry during grouting and grouting quality. 3, 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 water about three-quarters of the first 1 ~ 2 min, then add the remaining water continue to stir until smooth, the mixing time control within 5 min. A mixing volume shoulds not be too much to used up within 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 add remaining material after 1 min to stir evenly, according to the power of the hand electric drill and rotational speed, the mixing process takes about 5 ~ 10 min. 5, stir well after grouting material if the surface has a large number of air bubbles, should let stand for 1 ~ 2 min, after waiting for air bubbles eliminate again for grouting. Maintenance: 1, after the grouting, the surface touch dry, water moisture curing of initial setting. 2, the winter maintenance should be immediately after the construction completion besmear brushs concrete curing the seam an agent, covering plastic film and build rock for thermal insulation quilt or grass grid and moist. Architectural technology 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.