Compound type liquid anti-freezing pumping agent and preparation method thereof

Abstract

The invention discloses a compound type liquid anti-freezing pumping agent and a preparation method thereof. The compound type liquid anti-freezing pumping agent is prepared from the following components in parts by mass: (30 to 35) parts of a polycarboxylic type high efficiency water-reducing agent, (5 to 6) parts of alkyl succinimide, (2 to 3) parts of dioctyl phthalate, (1.5 to 2) parts of sodium gluconate, (8 to 10) parts of magnesium acetate, (0.3 to 0.4) part of sodium dodecylbenzene sulfonate, (1.3 to 1.5) parts of isopropyl alcohol, (1 to 1.5) parts of fragilaria crotonensis anti-freezing protein, (0.005 to 0.007) part of polyethylene glycol, (0.0025 to 0.003) part of beta-cyclodextrin, (0.0075 to 0.008) part of dimethyl diallyl ammonium chloride and (45 to 50) parts of water. Theanti-freezing pumping agent has small crystallization amount at low temperature, high cohesive force, relatively small slump loss and no pollution and the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of building materials and relates to a composite liquid antifreeze pumping agent and a preparation method thereof. Background technique [0002] With the rapid development of my country's infrastructure, more and more projects require construction under negative temperatures, so the demand for antifreeze pumping agents has also increased significantly. As we all know, the reason why concrete has high strength is the result of hydration reaction between cement and water in its composition. The chemical reaction between cement and water is very slow at low temperature, especially at 4°C to 5°C. If the water in the concrete freezes and expands when the concrete curing temperature drops to -0.5°C to 2°C, it will cause permanent damage to the newly formed fragile concrete structure. The antifreeze pumping agent can effectively reduce the freezing point of water and increase the early strength, so that the concrete can qu...

AI Technical Summary

Problems solved by technology

For example: liquid antifreeze with sodium nitrite, sodium chloride, sodium acetate, urea and ammonia water as antifreeze components has a large amount of crystallization and precipitation at negative temperatures, polluting the environment, resulting in poor antifreeze performance and use performance; Various components in the liquid antifreeze pumping agent such as water reduction, early strength, air entrainment, retardation and antifreeze are incompatible, which seriously affects the strength of cement concrete, etc.

At present, the domestic traditional method is to use low-concentration naphthalene-based high-efficiency water reducer to compound liquid antifreeze pumping agent. This kind of liquid antifreeze pumping agent has a large amount of crystallization at low temperature, low cohesion, and slump loss. Larger, polluting the environment and other issues

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