Green rapid-hardening early-strength magnesium phosphate-based healant and preparation method thereof

A technology of magnesium phosphate and repair agent, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as strength shrinkage, increase compactness, reduce preparation conditions, and increase impermeability The effect of grade

Active Publication Date: 2015-09-16
WUHAN MUNICIPAL CONSTR GROUP +1
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a green fast-hardening and early-strength magnesium phosphate-based repairing agent with low cost and stable late-stage strength and a preparation method there

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] A green quick-hardening early-strength magnesium phosphate-based repair agent, and its preparation method includes the following steps:

[0030] 1) Weighing of raw materials: Prepare material A and material B separately. The mass percentages of each component in material A are: potassium dihydrogen phosphate 88% (mass purity greater than 95%), borax 3.3%, and fine steel fiber 8.0% , Lithium carbonate 0.04%, cellulose ether 0.06%, FDN9000 polycarboxylic acid water reducing powder 0.5%, triethanolamine 0.1%; the mass percentages of each component of B material are: magnesium oxide 68%, fly ash 6%, silicon Ash 2%, steel slag powder 5%, ferrochrome tailings slag powder 10.5%, anhydrite 2.4%, UEA expansion agent 6%, triethanolamine 0.1%; mix material A and material B evenly, and dry them for later use;

[0031] 2) Weigh material A and material B at a mass ratio of 1:5.0;

[0032] 3) Weigh the water according to the water-to-glue ratio of 0.3, first put the B mate...

Example Embodiment

[0034] Example 2

[0035] A green quick-hardening early-strength magnesium phosphate-based repair agent, and its preparation method includes the following steps:

[0036] 1) Weighing of raw materials: according to the component ratio in Example 1, the A and B materials are mixed uniformly, and dried for use;

[0037] 2) Weigh material A and material B at a mass ratio of 1:4.0;

[0038] 3) Weigh the water according to the water-to-glue ratio of 0.3, control the water-to-gel ratio to 0.30, put the A and B materials in a portable mixer and mix them for 1 to 2 minutes, and then add water to continue mixing for 2 to 3 minutes to mix evenly. Vibrate and flatten the plastered surface within 10 minutes, maintain under standard conditions, green fast hardening early strength magnesium phosphate-based repair agent test block.

[0039] The prepared green quick-hardening early-strength magnesium phosphate-based repair agent test block is subjected to compressive and flexural strength, initial flui...

Example Embodiment

[0040] Example 3

[0041] A green quick-hardening early-strength magnesium phosphate-based repair agent, and its preparation method includes the following steps:

[0042] 1) Weighing of raw materials: Prepare material A and material B separately. The mass percentages of each component in material A are: 81% potassium dihydrogen phosphate (mass purity greater than 95%), 6.3% borax, and 12.0% fine steel fiber , Lithium carbonate 0.02%, cellulose ether 0.08%, FDN9000 polycarboxylic acid water reducing powder 0.4%, triethanolamine 0.2%; the mass percentages of each component of B material are: magnesium oxide 61%, fly ash 7.5%, silicon Ash 3%, active steel slag powder 6.5%, ferrochrome tailings slag powder 15%, anhydrite 1.8%, UEA expansion agent 5%, triethanolamine 0.2%; mix A and B materials evenly, and dry them for later use;

[0043] 2) Weigh material A and material B at a mass ratio of 1:5.0;

[0044] 3) Weigh the water according to the water-to-glue ratio of 0.28, first put the B m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Compressive strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Flexural strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a green rapid-hardening early-strength magnesium phosphate-based healant and a preparation method thereof. The green rapid-hardening early-strength magnesium phosphate-based healant is composed of a material A and a material B; the material A is prepared via mixing of a phosphate, borax, a toughening ingredient, an accelerating component, a water retention ingredient, a water reducing ingredient, and a grinding aid dispersing agent; and the B material is prepared via mixing of magnesium oxide, flyash, silica fume, ground steel slag, chromium iron tailing slag powder, anhydrite, an expanding agent, and a grinding aid dispersing agent. According to the preparation method, industrial supplementary cementious materials (flyash, silica fume, and ground steel slag) are added into cement, so that cement fluidity and early strength are improved; industrial chromium iron tailing slag powder is added into the green rapid-hardening early-strength magnesium phosphate-based healant as a filling material, so that it is beneficial for cement hydration reaction, set cement compaction rate is increased, and at the same time heavy metal waste solidification is realized. The green rapid-hardening early-strength magnesium phosphate-based healant is capable of achieving balance between magnesium phosphate cement setting time and high early strength, and solving problems that shrinking percentage is large and bonding strength is low.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a green quick-hardening and early-strength magnesium phosphate-based repair agent and a preparation method thereof. Background technique [0002] Magnesium Phosphate Cement (MPC) is a new type of early-strength and fast-hardening cementitious material prepared by MgO, phosphate and retarder in appropriate proportions. MPC cement has the advantages of fast setting, high bond strength with old concrete interface, small shrinkage, good wear resistance and frost resistance, etc. It is widely used in rapid repair projects of bridges, roads and airport runways, and has important civil and military applications. use. [0003] However, the preparation cost of ordinary magnesium phosphate cement is high, the setting speed is fast, and the construction operation time is limited; the cement is brittle, which is not conducive to the environment of long-term impact load and defo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B28/34C04B18/12
CPCY02W30/91
Inventor 黄小霞肖铭钊李扬王鸿非徐波苗强代小曼代超孟祥静
Owner WUHAN MUNICIPAL CONSTR GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap