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A kind of construction mortar using gold mine tailings as full aggregate and its preparation method

A technology for gold mine tailings and mortar, which is applied in the field of building materials, can solve the problems of reduced strength, small particle size of tailings, and increased water consumption for building mortar mixing, etc., to achieve shrinkage and strength improvement, reduce production costs, and save resources. Effect

Active Publication Date: 2022-03-29
陕西宏城矿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] When using tailings instead of all construction sand to prepare construction mortar, due to the small particle size and large specific surface area of ​​the tailings, the mixing water consumption of the construction mortar will increase greatly, thereby increasing the porosity and reducing the strength of the hardened construction mortar.
[0012] 2. The soil content in the tailings exceeds the standard
Especially the soil in powder form is difficult to separate and is a harmful component in the preparation of construction mortar. It not only increases the water consumption of the mortar, but also increases the shrinkage of the mortar and deteriorates the cohesive force.
[0014] 3. The tailings particles have sharp edges and corners
So far, there have been no reports on the large-scale application of tailings to replace all aggregates in construction mortar

Method used

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  • A kind of construction mortar using gold mine tailings as full aggregate and its preparation method
  • A kind of construction mortar using gold mine tailings as full aggregate and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The present invention also relates to a method for preparing the construction mortar with gold mine tailings as the total aggregate. The method includes the following steps: the materials and their dosage are shown in Table 1.

[0052] Step 1: First, sieve the tailings to remove the mud, then mix and heat evenly with 1# surface treatment agent at 70-80°C and keep it for 1 hour, then add 2# surface treatment agent and continue mixing and heating for 1 hour to obtain the surface treated tailings;

[0053] Step 2: Mix and stir the polycarboxylate high-efficiency water reducer, thickener and air-entraining agent to completely dissolve the solid particles to obtain a composite admixture.

[0054]Step 3: Mix the mortar mixing water and the composite admixture liquid evenly to obtain an aqueous admixture solution;

[0055] Step 4: Mix the cementitious material and the tailings treated on the surface evenly in a forced mixer to obtain dry tailings mortar;

[0056] Step 5: Add...

Embodiment 2

[0058] The present invention also relates to a method for preparing the construction mortar with gold mine tailings as the total aggregate. The method includes the following steps: the materials and their dosage are shown in Table 1.

[0059] Step 1: First, sieve the tailings to remove the mud, then mix and heat evenly with 1# surface treatment agent at 70-80°C and keep it for 1 hour, then add 2# surface treatment agent and continue mixing and heating for 1 hour to obtain the surface treated tailings;

[0060] Step 2: Mix and stir the polycarboxylate high-efficiency water reducer, thickener and air-entraining agent to completely dissolve the solid particles to obtain a composite admixture.

[0061] Step 3: Mix the mortar mixing water and the composite admixture liquid evenly to obtain an aqueous admixture solution;

[0062] Step 4: Mix the cementitious material and the tailings treated on the surface evenly in a forced mixer to obtain dry tailings mortar;

[0063] Step 5: Ad...

Embodiment 3

[0065] The present invention also relates to a method for preparing the construction mortar with gold mine tailings as the total aggregate. The method includes the following steps: the materials and their dosage are shown in Table 1.

[0066] Step 1: First, sieve the tailings to remove the mud, then mix and heat evenly with 1# surface treatment agent at 70-80°C and keep it for 1 hour, then add 2# surface treatment agent and continue mixing and heating for 1 hour to obtain the surface treated tailings;

[0067] Step 2: Mix and stir the polycarboxylate high-efficiency water reducer, thickener and air-entraining agent to completely dissolve the solid particles to obtain a composite admixture.

[0068] Step 3: Mix the mortar mixing water and the composite admixture liquid evenly to obtain an aqueous admixture solution;

[0069] Step 4: Mix the cementitious material and the tailings treated on the surface evenly in a forced mixer to obtain dry tailings mortar;

[0070] Step 5: Ad...

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Abstract

The invention provides a kind of building mortar with gold mine tailings as the whole aggregate and its preparation method; it is composed of cementitious material, gold mine tailings through surface treatment, composite admixture and water; the invention also relates to the construction mortar The preparation method, the present invention changes the water absorption performance and angularity of the gold mine tailings through the surface treatment, raw material selection and ratio design of the gold mine tailings, so the gold mine tailings can be used as the whole aggregate to prepare building mortar, The water demand, workability, shrinkage and strength of the mortar are improved to meet the requirements of general construction projects. At the same time, it opens up a new way for the large-scale utilization of solid waste such as gold mine tailings. This is not only beneficial to protect the environment, reduce the mining of natural sand and stone, but also reduce the production cost of construction mortar.

Description

technical field [0001] The invention belongs to the technical field of building materials; in particular, it relates to a preparation method of building mortar using gold mine tailings as a complete aggregate. Background technique [0002] Construction mortar is one of the main materials used in civil engineering. With the progress of my country's basic construction projects, construction mortar will always maintain a high demand. [0003] Sand and gravel aggregate has always been an essential raw material for the preparation of construction mortar. However, due to the requirements of environmental protection, natural sand and gravel aggregates in many places can no longer be mined. This not only led to a sharp increase in the price of aggregates required for construction mortar projects, but also increased the cost of construction projects, and there was a shortage of aggregates in many places, which affected the smooth progress of infrastructure projects. [0004] Tailin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B20/02
CPCC04B28/04C04B20/023C04B2201/20C04B2201/50C04B18/12C04B24/383C04B2103/302C04B24/16C04B18/08
Inventor 刘开平贾旭芝孙志华杨振刘竞怡温久然
Owner 陕西宏城矿业科技有限公司
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