Supercharge Your Innovation With Domain-Expert AI Agents!

High-strength and high-toughness basic magnesium sulfate fiber concrete and preparation method thereof

A magnesium sulfate fiber and concrete technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of reduced fluidity, poor strength and economical efficiency, and lack of concrete, and achieve good durability and strength and the effect of improving toughness and dispersing stress

Active Publication Date: 2020-09-18
GUANGDONG CHANGDA OVERSEAS ENG +2
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elastic modulus difference between the UPE fiber and the concrete in the existing ultra-high molecular weight polyethylene (UPE) fiber basic magnesium sulfate concrete is too large, it is difficult to give full play to the effect of the fiber, and the unreasonable ratio will make the concrete fluidity Relatively poor in lowering, strength and economy
Therefore, there is a lack of a high-strength and high-toughness basic magnesium sulfate fiber concrete that is easy to construct, can give full play to the respective strength characteristics of fiber and basic magnesium sulfate concrete, has good durability and good fluidity

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-strength and high-toughness basic magnesium sulfate fiber concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation:

[0019] (1) Take by weight 377 parts of light-burned magnesia (water-cement ratio 0.53, light-burned magnesia active content is 65.52%), 129 parts of magnesium sulfate heptahydrate, 600 parts of sand and 1110 parts of crushed stone, pre-dried Stir until all are delivered to the inside of the mixer;

[0020] (2) take by weight 4.6 parts of citric acid and 176 parts of water, fully dissolve;

[0021] (3) Put 60-70% of the solution obtained in step (2) into the mixer for stirring, first stir for 30s, after the volume of the mixture decreases when it meets water, then add the remaining solution into the mixer, and continue stirring for 150s to obtain . The test results are shown in Table 1.

Embodiment 2

[0023] Preparation:

[0024] (1) Take by weight 377 parts of light-burned magnesia (water-cement ratio 0.53, light-burned magnesia active content is 65.52%), 129 parts of magnesium sulfate heptahydrate, 600 parts of sand and 1110 parts of gravel, wherein Stones are continuously graded from 5 to 20mm, dry mixed in advance, until all are transported to the inside of the mixer;

[0025] (2) Take by weight 4.6 parts of citric acid and 176 parts of water, add 0.49 parts of UPE fibers and 0.65 parts of PVA fibers after fully dissolving, the length of both fibers is 12mm, and mix uniformly;

[0026] (3) Put 60-70% of the mixture obtained in step (2) into the blender and stir for 30s first, after the volume of the mixture decreases when it meets water, add the rest of the mixture into the blender and continue stirring for 150s to obtain . The test results are shown in Table 1.

Embodiment 3

[0028] Preparation:

[0029] (1) Take by weight 377 parts of light-burned magnesia (water-cement ratio 0.53, light-burned magnesia active content is 65.52%), 129 parts of magnesium sulfate heptahydrate, 600 parts of medium sand and 1110 parts of gravel, wherein The crushed stones are continuously graded from 5 to 20 mm, and dry-mixed in advance until all of them are transported into the mixer;

[0030] (2) Take by weight 4.6 parts of citric acid and 176 parts of water, add 0.97 parts of UPE fiber and 1.3 parts of PVA fiber after fully dissolving, two kinds of fiber lengths are 12mm, mix uniformly;

[0031] Step (3) is the same as step (3) in Example 2. The test results are shown in Table 1.

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
lengthaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses high-strength and high-toughness basic magnesium sulfate fiber concrete. The basic magnesium sulfate fiber concrete comprises the following raw materials in parts by weight: 350 to 400 parts of light calcined magnesia, 120 to 140 parts of magnesium sulfate heptahydrate, 160 to 185 parts of water, 4.2 to 5.0 parts of citric acid, 590 to 610 parts of sand, 1100 to 1120 partsof gravels, 0.49 to 1.94 parts of fibers with Young modulus of 800 to 1500 cN / dtex and 0.65 to 2.65 parts of fibers with Young modulus of 250 to 500 cN / dtex. The basic magnesium sulfate fiber concretehas the advantages that the prepared basic magnesium sulfate fiber concrete not only has the characteristics of quick setting, early strength and high strength, but also has the characteristics of high breaking strength and high toughness, is easy to construct and wide in application, and is particularly suitable for a structural body in a chloride ion corrosion environment.

Description

technical field [0001] The invention relates to a basic magnesium sulfate fiber concrete, in particular to a high-strength and high-toughness basic magnesium sulfate fiber concrete. Background technique [0002] Basic magnesium sulfate fiber concrete has the characteristics of fast setting, early strength and high strength, especially the advantages of high tensile strength and flexural strength, making it a new material with great application prospects. The elastic modulus difference between the UPE fiber and the concrete in the existing ultra-high molecular weight polyethylene (UPE) fiber basic magnesium sulfate concrete is too large, it is difficult to give full play to the effect of the fiber, and the unreasonable ratio will make the concrete fluidity The reduction, strength and economy are relatively poor. Therefore, there is a lack of a high-strength and high-toughness basic magnesium sulfate fiber concrete that is easy to construct, can give full play to the respecti...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/30
CPCC04B28/30C04B2201/50C04B22/142C04B24/06C04B14/06C04B14/02C04B16/0625C04B16/0641Y02W30/91
Inventor 吕世明卓文泽许修亮郭丹唐凯沈才华钱晋谢飞
Owner GUANGDONG CHANGDA OVERSEAS ENG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com