High-performance concrete composite admixture produced from high-silicon iron tailings

Abstract

The invention provides a high performance concrete composite admixture produced by high silicon iron tailings. The admixture comprises the following components in parts by weight: 70-80 parts of high silicon iron tailing slags, 15-20 parts of limestone, 10-15 parts of zeolite, 8-15 parts of diatomite, 5-10 parts of desulfurized gypsum, 3-8 parts of perlite, and 3-8 parts of kaolin. 70-80 parts by weight of the high silicon iron tailing slags, 15-20 parts by weight of the limestone, 10-15 parts by weight of the zeolite, 8-15 parts by weight of the diatomite, 5-10 parts by weight of the desulfurized gypsum, 3-8 parts by weight of the perlite, and 3-8 parts by weight of the kaolin are uniformly mixed and thrown into a ball mill, milling is carried out till the materials are milled into powder whose specific surface area is 500-600m<2> / kg, 10-12 parts by weight of a polycarboxylic acids water reducer is mixed into the powder with stirring, and the high performance concrete composite admixture produced by high silicon iron tailings is obtained. The high performance concrete composite admixture produced by high silicon iron tailings can improve strength and endurance of concrete, reduce environmental pollution, reduce production cost, protect natural ecological environment, and promote circular economy and sustainable development of mineral resources.

Description

technical field [0001] The invention relates to a high-performance concrete composite admixture produced from high-silicon iron tailings. Background technique [0002] The cement industry, which is the main raw material of traditional concrete, is a "sunset industry" with serious pollution and unsustainable development. Now countries around the world have formulated the performance indicators of "green" building materials, and the new concept of "green" high-performance concrete (GHPC) has been proposed. The so-called "green" refers to replacing cement with other materials as much as possible in concrete materials to produce new types of concrete with better performance, lower energy consumption and less environmental pollution. High-performance concrete is the development direction of concrete in the future, and it was once called 21st century concrete in foreign countries. [0003] The characteristics of high performance concrete: [0004] 1. Use as little cement clinke...

AI Technical Summary

Problems solved by technology

[0007] Unreasonable selection of high-performance concrete raw materials may cause quality defects such as unqualified concrete, unstable volume, appearance, etc., and increase production costs