High performance concrete pumping agent controlling falling degree loss type and its usage method

Abstract

The invention belongs to the technical field of building materials, and in particular relates to a high-performance concrete pumping agent for controlling slump loss. It is composed of naphthalenesulfonic acid formaldehyde condensation product water reducer, polyvinyl alcohol, sodium 12 alkyl sulfate, citric acid, sodium gluconate and water. Using this invention can greatly improve the fluidity of concrete, and make the concrete slump between 2- There is basically no loss within 4 hours, and it reduces bleeding, increases strength, and improves concrete durability. The invention is applicable to structures (structures) such as commercial ready-mixed concrete, mass concrete, reinforced concrete, light aggregate concrete, bridges, buildings, hydraulic engineering and road surfaces.

Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a high-performance concrete pumping agent for controlling slump loss. Background technique

[0002] Commercial ready-mixed concrete adopts specialized production technology and centralized mixing supply process, which not only speeds up the concrete construction speed, but also greatly increases the mixing ratio of admixtures and various active mineral admixtures in concrete, effectively utilizing solid waste, saving This has laid a solid foundation for saving energy, saving resources and protecting the environment, and realizing the sustainable development of concrete, a bulk building material.

[0003] The ready-mixed concrete is poured by pumping technology at the construction site, which requires the concrete to have good fluidity and pumpability. In addition, since the mixing station is a certain distance from the construction site, commercial ready-mi...