Supply Jinan CGM-320A bearing grout, for a variety of precast erection of grout, grout factory outlets

CGM-320A bearing grout a range of applications for a variety of precast erection of grout, grout used between the seat bottom and the stone piers supporting the pad. Second, the product features ultra-high early strength l; excellent mobility; l longer working hours; economy; l dense, non-shrink; no rust, no metal aggregate; l convenient construction; chloride free three Performance indicators Performance Model CGM-320A fluidity (mm) ≥320 30min fluidity (mm) ≥240 bleeding rate (%) 0 compressive strength (Mpa) 2h≥20 / 28d≥50 56d of not less than 28d The results of not less than 56d 90d flexural strength test results (Mpa) 24h≥10 elastic modulus (Gpa) 28d≥30 28d free expansion (%) 0.02 - 0.1 The above data are in standard laboratory under controlled conditions measured. Unit Dosage: about 2200Kg m3 test based /: technological base [2005] No. 101 Railway Bridge rubber bearing basin Interim technical conditions Fourth, the construction method, the holder mounted on the beam at the end, should be installed so that symmetrical bearing midline midline symmetry coincides with the bottom of the beam, the deviation not greater than 0.5mm; successive bearing bolt tightening, tightening of the bolts should be basically the same; after the completion of bolts shall have a gap between the seat and the beam bearing plate . 2, the bolt hole mounting bolt on the bearing, the bolt protruding nut length is 0.25 times the diameter of the bolt. Nuts and bolts fastening the sleeve to prevent the bolt and sleeve bearing underside junction leakage of plasma. 3, the support pad stone mark the longitudinal, transverse symmetrical supporting center line. Bearing pad surface chiseling stone, clear the debris left in the bolt hole, with water saturation bearing pad stone surface wet, but not out of water during construction. Then in the top surface of the stone bearing pad 20-30mm thick layer of non-shrink mortar M50 dry hard and compacted, smooth surface, note the amount of compression of mortar elevation beam after falling mortar should be considered. Clear debris left in the bolt holes, and in front of the beam position within 30min, the bolt hole perfusion CGM-320A to support pad 15mm below the top surface of the stone. 4. Press the powder slurry: water = 1: 0.17 (weight ratio) preparation. Water should be added to the mixing bucket first, then gradually adding weighed grout, side by side feeding electric mixer gun was stirred until all the powder addition was completed, stirring was continued for 2-3 minutes, the slurry evenly. The mixed slurry should be completed within 25 minutes perfusion. 5, should be off the beam centerline and make bearing pad stone top bearing longitudinal centerline coincides laterally symmetrical. After the fall of the beam should be no shrinkage mortar dry hard M50 conservation. After 6 until bolt hole grouting material to achieve the specified strength, fastening bolt, bearing the temporary removal of the connecting plate, bearing the seal installed hoardings.