Concrete admixture and preparation method thereof

Abstract

The invention discloses a concrete admixture. According to the key point of the technical scheme, the concrete admixture is composed of the following raw materials (by weight): 28-32 parts of a waterreducing agent, 0.6-1 part of a viscosity regulator, 8-12 parts of an expanding agent, and the balance water. The invention aims to provide a concrete admixture with good compatibility and stability.After the concrete admixture is added into concrete, viscosity of the concrete can be obviously reduced without affecting fluidity of the concrete.

Description

technical field

[0001] The invention relates to the technical field of building materials, more specifically, it relates to a concrete admixture and a preparation method thereof. Background technique

[0002] Concrete is the most widely used building material in modern times. It has the advantages of abundant raw materials, low price, simple process, high strength and good durability. In engineering applications, construction parties usually use high-strength cement and reduce the water-binder ratio to improve concrete strength. However, these measures often lead to an increase in the viscosity of the concrete, a slowing of the flow rate, and a slowing of the concrete jacking speed, and during the construction process, pipe plugging and pipe bursting often occur.

[0003] At present, the effective way to solve such problems is usually to mix a certain amount of viscosity modifier and water reducer in concrete to improve the workability of concrete. However, the viscosity m...

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