Alkali-activated bagasse ash/slag low-carbon mortar mix proportion design method based on strength regulation and control

Abstract

The invention relates to an alkali-activated bagasse ash/slag low-carbon mortar mix proportion design method based on strength regulation and control. The method comprises the following steps of: (1) preparing alkali-activated bagasse ash/slag low-carbon mortar composed of different raw materials; (2) testing the strength of the low-carbon mortar composed of different raw materials; (3) establishing a low-carbon mortar strength prediction model based on raw material parameters; and (4) calculating the raw material parameters based on strength design requirements, and determining the mix proportion of the low-carbon mortar. By adopting the method, the utilization rate of the bagasse ash can be greatly increased, solid wastes are recycled, calcining treatment and cement compound doping are not needed, and the emission of carbon dioxide is remarkably reduced. Meanwhile, a strength prediction model of the mortar strength, the proportion of bagasse ash to a precursor, the amount of sodium oxide, the ratio of the amount of silicon dioxide to the amount of sodium oxide in the alkali activator, the water-binder ratio and the age is established, the precursor is prepared by homogenizing the bagasse ash and slag, and the model provides reference and prediction for practical engineering application.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an alkali-activated bagasse ash / slag low-carbon mortar mix ratio design method based on strength control. Background technique [0002] Guangxi is the main area for sugarcane planting, and its output accounts for about 68% of the country's total. Bagasse ash, as a by-product of its industry, has an annual stacking volume of up to 9 million tons, seriously affecting the air quality and soil environment. It is urgent to find a suitable method Take advantage of it. [0003] Using bagasse ash to prepare building materials is an effective method for solid waste disposal and utilization. Chinese patent 201910643837.0 discloses a method for preparing bagasse ash mortar. In this application, 10-20 parts of pretreated bagasse ash, 100-300 parts of sand, 30-55 parts of water, 100 parts of cement, and 0 parts of water reducer - 2 parts are mixed and stirred, poured,...

AI Technical Summary

Problems solved by technology

This method establishes an alkali-activated bagasse ash / slag low-carbon mortar strength prediction model based on raw material parameters, which has good universality and can be used to solve the problem of difficult mix ratio design due to large regional differences in raw materials

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