Composite water-retaining thickening material for commodity mortar and using method thereof
A water-retaining, thickening, commercial mortar technology, which is applied in the field of building materials, can solve the complex and strict technical requirements for commercial mortar preparation, and achieve the effects of reasonable product components, improved workability, and long storage period
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Embodiment 1
[0032] Embodiment 1, a composite water-retaining thickening material for commercial mortar (by weight percentage, the same below). Calcium-based bentonite 68.07%, sodium-based bentonite 6.82%, kaolin 3.40%, sepiolite 2.72%, zeolite 3.41%, cellulose ether (viscosity 200000mPa.s) 1.97%, lignosulfonate 0%, fly ash 13.61 After mixing, it is put into a pulverizer for grinding (until the percentage of 0.08mm square hole sieve is less than 40%). Compared with the ground mortar without any admixture, the ground mortar mixed with the product of the present invention (amount of 6% of the cementitious material weight) not only improves workability and viscosity, but also has a degree of delamination of 10mm. The water retention rate increased from 65% to 92%, the 28d compressive strength increased by 5%, the bond strength increased from about 0.2MPa to 0.5MPa, the shrinkage rate decreased by 30%, and the strength loss rate decreased by 40% after 50 freeze-thaw cycles. Standard requireme...
Embodiment 2
[0033] Embodiment 2, the compound type water-retaining thickening material that is used for commercial mortar presses calcium-based bentonite 39.00%, sodium-based bentonite 15.60%, kaolin 15.60%, sepiolite 7.80%, zeolite 7.80%, cellulose ether (viscosity 100000mPa.s ) 2.50%, lignosulfonate 0%, and fly ash 11.70% are mixed and then put into a pulverizer for grinding (until the 0.08mm square hole sieve percentage is less than 40%). Compared with the masonry mortar without any admixture, the masonry mortar mixed with the product of the present invention (the amount is 9% of the weight of the cementitious material) not only has improved workability and viscosity, but also has only 13mm, the water retention rate increased from 68% to 94%, the 28d compressive strength increased by 8%, the bond strength increased from about 0.2MPa to 0.5MPa, the shrinkage rate decreased by 25%, and the strength loss rate decreased by 35% after 50 freeze-thaw cycles , meeting the standard requirements...
Embodiment 3
[0034] Embodiment 3, the compound type water-retaining thickening material that is used for commodity mortar presses calcium-based bentonite 34.96%, sodium-based bentonite 17.48%, kaolin 12.24%, sepiolite 10.49%, zeolite 8.74%, cellulose ether (viscosity 75000mPa.s ) 2.80%, fly ash 8.74%, and lignosulfonate 4.55% are mixed and put into a pulverizer for grinding (until the sieve percentage of 0.08mm square hole sieve is less than 40%). Compared with the plastering mortar without any admixture, adding the product of the present invention (dosage is 40kg / m 3 )’s plastering mortar not only has greatly improved workability and viscosity, but also has a layered degree of only 15mm, water retention rate increased from 70% to 95%, setting time extended from 6.5h to 9.0h, and 28d compressive strength increased 6%, the bond strength is increased from about 0.15MPa to 0.4MPa, the shrinkage rate is reduced by 35%, and the strength loss rate is reduced by 32% after 50 freeze-thaw cycles, mee...
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