Making method for low-cost concrete water-reducing agent

Abstract

The invention provides a making method for a low-cost concrete water-reducing agent. The making method comprises the following concrete contents: (1) cement mortar is allowed to form a flocculation structure under the action of molecular gravitation of cement particles, 10 to 30% of mixing water is allowed to be wrapped in the cement particles instead of participating in free flowing and exerting lubrication effect, so the fluidity of a concrete mixture is influenced, and raw material quality is stabilized at a constant level by using a waste material homogenizing and purifying apparatus developed under self-dependent innovation; (2) molecules of cement mortar aqua can directionally adhere on the surfaces of the cement particles, and the surfaces of the cement particles are allowed to carry same charges (usually negative charges) so as to form electrostatic repulsion effect, so the cement particles are dispersed, the flocculation structure is destroyed, and water wrapped in the cement particles is released and participated in flowing; and (3) the doping amount of the water-reducing agent is 0.4 to 2.0% of the gross weight of cementing materials, and a frequently-used doping amount is 0.4 to 1.2%. Concrete trial mix test should be carried out before usage of the water-reducing agent so as to determine an optimal doping amount.

Description

1. Technical field [0001] The invention relates to a production process of a water reducer, in particular to a method for making a low-cost concrete water reducer. 2. Background technology [0002] Water reducing agent refers to the admixture that can reduce the amount of mixing water and increase the strength of concrete under the condition of constant workability and cement amount of concrete; or save the amount of cement under the condition of constant workability and strength. The agent is suitable for concrete construction where the daily minimum temperature is above 5°C. High-efficiency water-reducing agent is suitable for concrete construction with the daily minimum temperature above 0°C, and is suitable for the preparation of high-fluidity concrete, high-strength concrete and steam-cured concrete. From the 1930s to the 1960s, the types of water reducing agents were mainly ordinary water reducing agents represented by organic substances such as sodium rosinate, sodiu...

AI Technical Summary

Problems solved by technology

Significantly enhance the strength of cement mortar, but the production process is complicated, and the general price is high, which is the primary problem to be solved at present