&Application Scope??? It is suitable for grouting in the erection of various prefabricated beams, and is used for grouting between the support bottom plate and the pier support pad.
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2. Product Features
&Ultra-high early strength, excellent fluidity
&Long working time, economy
&Dense, no shrinkage, no rust , does not contain metal aggregate
& is easy to construct and does not contain chloride
Product model
Performance index
Fluidity
&
Fluidity
&
Bleeding rate (%)
Compressive strength
h&
/
d&
d is not lower than d test result
d is not Lower than d test result
Flexural strength
h&
Elastic modulus
d&
d free expansion rate (%)
.~.
The above data are measured under standard laboratory control conditions. Unit dosage: approx.
Inspection basis: Temporary technical conditions for pot-type rubber bearings on the bridge of the Science and Technology Base Passenger Dedicated Line []
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4. Construction method
???, will The support is installed at the bottom of the beam. During installation, the symmetrical center line of the support should coincide with the symmetrical center line of the beam bottom plate, and the deviation should not be greater than 1. Tighten the support bolts one by one, and the tightening degree of each bolt should be basically the same. There must be no gap between the seat and the beam support plate.
???. Install the anchor bolts in the anchor bolt holes of the support. The length of the bolt extending out of the nut is . times the diameter of the bolt. Tighten the nuts and sleeve bolts to prevent grout leakage at the joint between the sleeve bolts and the bottom surface of the support.
???, mark the longitudinal and transverse symmetrical support center lines on the supporting pad stones. Chisel the surface of the supporting pads, remove debris left in the anchor bolt holes, and saturate the surface of the supporting pads with water, but no open water is allowed during construction. Then lay a thick layer of dry hard non-shrinkage mortar on the top surface of the supporting pad stone and compact it, making the surface smooth. Note that the mortar elevation should take into account the compression of the mortar after the beam is dropped. Clear the debris left in the anchor bolt holes, and before the beam is in place, pour water into the anchor bolt holes to below the top surface of the supporting pad.
???, the slurry is prepared according to powder:water=:. (weight ratio). Water should be added into the mixing barrel first, and then the weighed grouting material should be gradually added. Stir with an electric mixing gun while adding the material, until all the powder is added, and then continue stirring for another minute to make the slurry uniform. The mixed slurry should be poured within minutes.
??? When the beam is dropped, the center line of the support should coincide with the longitudinal and transverse symmetrical center line of the pad stone top support. After the beams are dropped, the dry hard non-shrinkage mortar should be cured in time.
?? ?. After the grouting material of the anchor bolt holes reaches the specified strength, tighten the anchor bolts, remove the temporary connecting plate of the bearing, and install the bearing sealing enclosure plate.
National standard bearing grouting material manufacturer