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Magnesium oxychloride cement-based double-liquid grouting material and preparation method thereof

A magnesium oxychloride cement and two-liquid grouting technology, which is applied in the field of construction engineering reinforcement, can solve problems such as poor construction performance, difficult setting time adjustment, etc., and achieves low requirements for production equipment and personnel, simple and easy preparation method, and low slurry good fluidity

Active Publication Date: 2021-12-03
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a magnesium oxychloride cement-based two-liquid grouting material and its preparation method, to solve the existing inorganic two-liquid grouting material construction Poor performance, hard to control the setting time, etc.

Method used

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  • Magnesium oxychloride cement-based double-liquid grouting material and preparation method thereof
  • Magnesium oxychloride cement-based double-liquid grouting material and preparation method thereof
  • Magnesium oxychloride cement-based double-liquid grouting material and preparation method thereof

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preparation example Construction

[0038] The preparation method of magnesium oxychloride cement-based two-liquid grouting material of the present invention comprises the steps:

[0039] The first step is to weigh the corresponding raw materials according to the weight parts of A powder and B powder, and mix them evenly to prepare A powder and B powder respectively;

[0040] In the second step, the A powder component and water are mixed uniformly according to the weight ratio of A powder: water = 100: (35-50) to prepare A slurry; the B powder component and water are mixed according to the B powder : water=100: (35~50) weight ratio mixes evenly, makes B slurry;

[0041] In the third step, the A slurry and the B slurry are uniformly mixed in the same volume to obtain the magnesium oxychloride cement-based two-component grouting material.

Embodiment 1

[0043]The magnesium oxychloride cement-based double-liquid grouting material of this embodiment is formed by mixing A slurry and B slurry at a volume ratio of 1:1, wherein: A slurry consists of 970g lightly burned magnesium oxide powder and 20g water reducer , 10g hydroxypropyl methylcellulose and 380g water are mixed, B slurry is composed of 660g magnesium chloride hexahydrate, 150g potassium dihydrogen phosphate, 150g sodium dihydrogen phosphate, 30g water reducer, 10g hydroxypropyl methylcellulose Mix with 380g of water.

[0044] The preparation method of the magnesium oxychloride cement-based two-liquid grouting material of the present embodiment may further comprise the steps:

[0045] Step 1: Take light-burned magnesia, water reducer, and hydroxypropyl methylcellulose according to the above weight, and mix them uniformly to obtain A powder;

[0046] Step 2, take magnesium chloride hexahydrate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, water reducer, h...

Embodiment 2

[0053] The magnesium oxychloride cement-based double-liquid grouting material of this embodiment is formed by mixing A slurry and B slurry in a volume ratio of 1:1, wherein: A slurry consists of 980g lightly burned magnesia powder and 15g water reducer , 5g hydroxypropyl methylcellulose and 450g water are mixed, B slurry is composed of 700g magnesium chloride hexahydrate, 150g potassium dihydrogen phosphate, 120g sodium dihydrogen phosphate, 20g water reducer, 10g hydroxypropyl methylcellulose Mix with 450g of water.

[0054] The preparation method of the magnesium oxychloride cement-based two-liquid grouting material of the present embodiment may further comprise the steps:

[0055] Step 1: Take light-burned magnesia, water reducer, and hydroxypropyl methylcellulose according to the above weight, and mix them uniformly to obtain A powder;

[0056] Step 2, take magnesium chloride hexahydrate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, water reducer, hydroxyp...

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Abstract

The invention belongs to the technical field of constructional engineering reinforcement, and particularly relates to a magnesium oxychloride cement-based double-liquid grouting material and a preparation method thereof. The double-liquid grouting material is formed by isopyknic mixing of slurry A and slurry B, wherein the slurry A is formed by mixing light calcined magnesia powder, a first water reducing agent, hydroxypropyl methyl cellulose and water, and the slurry B is formed by mixing magnesium chloride hexahydrate, monopotassium phosphate, sodium dihydrogen phosphate, a second water reducing agent, hydroxypropyl methyl cellulose and water. According to the magnesium oxychloride cement-based double-liquid grouting material, the characteristic of early strength of magnesium oxychloride cement is fully utilized, and the effect of rapid hardening and rapid hardening is achieved under the action of an additive; According to engineering requirements, the initial setting time of the double-liquid grouting material can be adjusted and shortened to be within 1 min, the final setting time of the material can be adjusted and shortened to be within 3 min, and the compressive strength of the material within 2 h can reach 10 MPa.

Description

technical field [0001] The invention belongs to the technical field of construction engineering reinforcement, and in particular relates to a magnesium oxychloride cement-based two-liquid grouting material and a preparation method thereof. Background technique [0002] Grouting in construction projects can achieve the purpose of reinforcing surrounding rock and blocking water. According to the chemical composition of the grouting material, the grouting material can be divided into inorganic grouting material and chemical grouting material; according to the construction method of the grouting material, it can be divided into single-liquid grouting material, double-liquid grouting material or three-liquid pulp material. Among them, the double-liquid or three-liquid grouting materials can achieve the purposes of rapid reinforcement and water blocking under the premise of meeting the construction requirements, especially for the exposed surrounding rock mass. At present, the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B111/70
CPCC04B28/32C04B2111/70C04B2201/50C04B2103/302C04B24/383C04B22/16Y02W30/91
Inventor 金祖权王雨利
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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