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Concrete pumping retarder
The invention discloses a concrete pumping retarder, and relates to the technical field of concrete admixtures. The concrete pumping retarder is prepared from, by weight, 40 parts to 50 parts of soybean molasses, 30 parts to 40 parts of isomaltitol, 20 parts to 25 parts of sulfonated melamine, 15 parts to 20 parts of tephra, 15 parts to 20 parts of modified starch, 13 parts to 17 parts of polyacrylamide, 12 parts to 15 parts of fatty alcohol-polyoxyethylene ether, 12 parts to 15 parts of microcrystalline cellulose, 10 parts to 13 parts of fructus gleditsiae powder, 10 parts to 13 parts of tea seed powder, 8 parts to 11 parts of naphthalene water reducers, 6 parts to 10 parts of nanometer rubber powder, 6 parts to 10 parts of polycarbamate, 5 parts to 8 parts of palmitic acid, 15 parts to 20 parts of coconut oil and 300 parts to 400 parts of water. The prepared retarder is free of chloride and alkali, the setting time of concrete can be effectively prolonged, heat of hydration can be reduced, generation and development of temperature cracks of the concrete can be greatly reduced and even avoided, the workability of the concrete can be further obviously improved, the bleeding rate can be greatly reduced, and endurance performance such as freezing resistance and corrosion resistance can be improved.
Concrete pumping retarder
The invention discloses a concrete pumping retarder, and relates to the technical field of concrete admixtures. The concrete pumping retarder is prepared from, by weight, 40 parts to 50 parts of soybean molasses, 30 parts to 40 parts of isomaltitol, 20 parts to 25 parts of sulfonated melamine, 15 parts to 20 parts of tephra, 15 parts to 20 parts of modified starch, 13 parts to 17 parts of polyacrylamide, 12 parts to 15 parts of fatty alcohol-polyoxyethylene ether, 12 parts to 15 parts of microcrystalline cellulose, 10 parts to 13 parts of fructus gleditsiae powder, 10 parts to 13 parts of tea seed powder, 8 parts to 11 parts of naphthalene water reducers, 6 parts to 10 parts of nanometer rubber powder, 6 parts to 10 parts of polycarbamate, 5 parts to 8 parts of palmitic acid, 15 parts to 20 parts of coconut oil and 300 parts to 400 parts of water. The prepared retarder is free of chloride and alkali, the setting time of concrete can be effectively prolonged, heat of hydration can be reduced, generation and development of temperature cracks of the concrete can be greatly reduced and even avoided, the workability of the concrete can be further obviously improved, the bleeding rate can be greatly reduced, and endurance performance such as freezing resistance and corrosion resistance can be improved.
Concrete pumping retarder
WANG WENBIN (author) / MAO KAI (author) / WANG RAN (author) / WANG WENFEI (author)
2015-12-23
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME