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Novel method for preparing unburned product by curing construction solid wastes

A technology for building slag and slag, which is applied in the field of new-type solidified building slag to prepare non-burning products, can solve problems such as low strength of solidified soil, and achieve the effects of reducing energy consumption, reducing production cost and improving utilization rate

Pending Publication Date: 2018-11-13
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it solves the shortcoming of low strength of solidified soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] The amount of curing agent added is 5% of the mass of the slag (the curing agent consists of 70 parts of cement, 10 parts of lime, 2 parts of silica fume, 8 parts of slag, 5 parts of fly ash, and 5 parts of starch), and the amount of water reducing agent added is 0.5% of the mass of the slag, the amount of the sludging agent added is 0.2% of the mass of the slag, the amount of the reinforcing agent is 0.03% of the mass of the slag, the amount of water added is 5% of the mass of the slag, and the crushed construction slag is Put the dry material and curing agent into the mixer and stir for 1min, then pour the water reducing agent, mud inhibitor and reinforcing agent into the water and mix them evenly, then pour them into the mixing pot, stir for 10min, and press the uniformly mixed material under the pressure of 20MPa Forming, demoulding after forming, placing in a steam curing box at 60°C for 6 hours, and then making unfired products.

example 2

[0023] The amount of curing agent added is 20% of the mass of the slag (the curing agent consists of 30 parts of cement, 15 parts of lime, 5 parts of silica fume, 25 parts of slag, 15 parts of fly ash, and 10 parts of starch). 2% of the mass of the slag, the amount of the mud inhibitor added is 1% of the mass of the slag, the amount of the reinforcing agent is 0.1% of the mass of the slag, the amount of water added is 15% of the mass of the slag, and the crushed construction slag is Put the dry material and curing agent into the mixer and stir for 5 minutes, then pour the water reducer, mud inhibitor and reinforcing agent into the water and mix them evenly, then pour them into the mixing pot, after stirring for 5 minutes, put the uniformly mixed materials under a pressure of 20MPa and press them Forming, demoulding after forming, placing in a steam curing box at 95°C for 24 hours, and then making unfired products.

example 3

[0025] The amount of curing agent added is 15% of the mass of the muck (the curing agent consists of 50 parts of cement, 12 parts of lime, 3 parts of silica fume, 15 parts of slag, 15 parts of fly ash, and 5 parts of starch), and the amount of water reducing agent added is 1% of the mass of the slag, the amount of the mud inhibitor added is 0.5% of the mass of the slag, the amount of the reinforcing agent is 0.06% of the mass of the slag, the amount of water added is 10% of the mass of the slag, and the crushed construction slag is Put the dry material and curing agent into the mixer and stir for 2 minutes, then pour the water reducer, mud inhibitor and reinforcing agent into the water and mix them evenly, then pour them into the mixing pot, after stirring for 8 minutes, put the uniformly mixed materials under a pressure of 50MPa and press them Molding, demoulding after molding, and natural curing for 1 day to make non-fired products.

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PUM

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Abstract

The invention discloses a method for preparing an unburned product by curing construction solid wastes. The unburned product comprises the following main raw materials by mass: a curing agent at a dosage of 5%-20% of the solid wastes, a water reducing agent at a dosage of 0.5% or 2% of the solid wastes, a mud blocking agent at a dosage of 0.2%-1% of the solid wastes, a reinforcing agent at a dosage of 0.03%-0.1% of the solid wastes, and water at a dosage of 5%-15% of the solid wastes, wherein the curing agent is composed of the following substances: 30-70 parts of ordinary Portland cement, 10-15 parts of lime, 2-5 parts of silica fume, 8-25 parts of slag, 5-15 parts of fly ashand 5-10 parts of starch. The invention further discloses a method for preparing unburned product of the solid wastes, wherein the unburned product of the solid wastes is prepared in a manner of press molding and steam curing or film curing. According to the invention, the raw materials construction solid wastescan be utilized by simple crushing treatment without sorting, so that the utilization rate is up to 100%; and a prepared test piece can be quickly hardened in the manner of natural film curing or steam curing without burning molding to greatly reduce production energy consumption and secondary pollution to the environment.

Description

technical field [0001] The invention relates to the field of building environmental protection materials, in particular to a novel method for preparing unfired products from solidified building dregs. Background technique [0002] Construction dregs are one type of construction waste. The present invention aims at the comprehensive utilization of spoils generated in the civil engineering process, mainly including foundation pit soil, shield soil, and dregs generated during excavation of tunnels and pipe galleries. In recent years, due to factors such as infrastructure construction and urban development, land resources have been occupied by a large amount of construction debris, which has caused serious pollution to the natural environment and led to a large amount of waste of resources. [0003] The comprehensive utilization of construction dregs is of great significance for saving resources, improving the environment, improving economic and social benefits, and realizing op...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B18/16C04B22/064C04B18/146C04B18/141C04B18/08C04B24/38C04B24/24C04B24/32C04B24/122C04B12/04C04B24/00C04B22/147
Inventor 曾路严春杰王瑶房杰王洪权浦嵩段平周森
Owner CHONGQING UNIV