Salt-freezing-resisting high-performance repairing mortar for repairing road concrete bridge
A technology for repairing mortar and concrete, which is applied in the field of highway concrete bridge maintenance, can solve the problems of lack of salt freeze resistance durability, poor compatibility, and unimproved durability of concrete structures, etc., and achieve high salt freeze resistance and denudation performance , long operating time and high durability
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[0042] Example 1
[0043] The components and parts of the salt-freeze-resistant high-performance polymer repair mortar are as follows:
[0044] 220 parts of ordinary Portland cement, 45 parts of granulated blast furnace slag powder, 45 parts of fly ash, 20 parts of silica fume, 650 parts of quartz sand (20~200 mesh) (30% of 20~40 mesh, 40~70 mesh) 35%, 70~120 mesh 15%, 120~200 mesh 20%), 3.5 parts of modified sulfonated melamine, 7.5 parts of redispersible latex powder, 0.45 parts of defoamer, 0.45 parts of starch ether, 0.4 parts of polyacrylonitrile fiber Copies.
[0045] Put the weighed ordinary Portland cement, granulated blast furnace slag powder, fly ash, and silica fume into the dry mixer in sequence, stirring for 5 min, and stirring speed at 200r / min; after that, the modified sulfonated melamine , Redispersible latex powder, defoamer, starch ether, and polyacrylonitrile fiber are put into the dry mixer and stirred in sequence, the stirring time is 5min, and the stirring spe...
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[0047] Example 2
[0048] 274 parts of ordinary Portland cement, 48 parts of granulated blast furnace slag powder, 48 parts of fly ash, 20 parts of silica fume, 590 parts of quartz sand (20~200 mesh) (of which, 20~40 mesh 30wt% (volume percentage weight ), 40~70 mesh 35%, 70~120 mesh 15%, 120~200 mesh 20%), modified (group) sulfonated melamine 4.0 parts, redispersible latex powder 8.0 parts, defoamer 0.5 parts ( Specific ingredients), 0.5 part of starch ether, 0.5 part of polyacrylonitrile fiber. (List of ingredients)
[0049] Put the weighed ordinary Portland cement, granulated blast furnace slag powder, fly ash, and silica fume into the dry mixer in sequence, stirring for 7 minutes, and stirring speed of 280r / min; after that, the modified sulfonated melamine, The redispersible latex powder, defoamer, starch ether, and polyacrylonitrile fiber are sequentially put into the dry mixer and stirred for 7 minutes, and the stirring speed is 280r / min; finally, the quartz sand is put int...
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