Efficient composite concrete air entraining agent and preparation method thereof

Abstract

The invention provides an efficient composite concrete air entraining agent and a preparation method thereof, and relates to the field of concrete admixtures. The efficient composite concrete air entraining agent is prepared from the following components in parts by weight: 30-40 parts of sapogenin, 30-40 parts of sapindus saponin, 10-15 parts of sodium dodecyl benzene sulfonate, 5-10 parts of coco fatty acid diethanolamide, 3-6 parts of orange essential oil, 3-5 parts of itaconic anhydride, 2-4 parts of sodium alcohol ether sulphate, 0.1-0.5 parts of sulfonated castor alcohol sodium salt, 0.1-0.5 part of carboxymethyl cellulose, 5-15 parts of nano powder, 0.01-0.1 parts of a water reducing agent, 0.01-0.1 parts of a foam stabilizer, 10-15 parts of polyethylene glycol, 2-4 parts of pentaerythritol and 130-150 parts of water. The efficient composite concrete air entraining agent can effectively improve slump, fluidity and plasticity of concrete, can reduce bleeding and segregation of the concrete, can improve homogeneity of the concrete, can reduce thermal diffusion and conduction coefficient of the concrete, can improve volume stability of the concrete and can enhance weather resistance of a field structure.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to a high-efficiency composite concrete air-entraining agent and a preparation method thereof. Background technique [0002] In order to improve the workability, water retention and cohesion of the concrete mixture, and improve the fluidity of the concrete, a large number of uniformly distributed, closed and stable micro-bubble admixtures are introduced into the mixing process of the concrete mixture. Aerosol. [0003] Usually, under the external force of violent agitation or vibration, air will be involved in the water to form small bubbles, but after standing still, the bubbles will float up and burst soon. When the air-entraining agent is added to the water, a large number of air bubbles will be introduced after shaking or stirring. [0004] The reason is that the surface of the liquid tends to shrink automatically, and foaming is a process in which the area of ​​the interfac...

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Problems solved by technology

[0004] The reason is that the surface of the liquid tends to shrink automatically, and bubbling is a process in which the area of ​​the interface increases greatly. In the case of constant surface tension, the free energy of the system will inevitably increase greatly, which is a thermodynamically unstable system. causing bubbles to shrink and collapse

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