Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of high-performance gel material and preparation method thereof

A gelling material and high-performance technology, applied in the field of high-performance gelling materials and their preparation, can solve problems such as uneven internal alkali concentration, different material reaction degrees, and reduced mechanical strength, so as to improve fiber reactivity and specific surface area The effect of growth and porosity increase

Active Publication Date: 2022-04-19
SHANDONG TRANSPORTATION INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Geopolymers were first proposed by the French scientist Davidovits. They have the possibility to replace traditional Portland cement. Since the raw materials are mostly derived from mineral waste and construction waste, they are now widely studied all over the world. Compared with traditional cement, geopolymers Polymers have higher mechanical strength and shorter reaction time, and can complete engineering emergency repair tasks. However, due to the ultra-high strength, geopolymers present very obvious brittle characteristics, and traditional geopolymers have weak flexural resistance, so it is difficult to adapt Existing engineering needs
[0003] The patent document with the publication number CN106746825A discloses "Plant fiber reinforced alkali slag cementitious material and its preparation method". Although the problem of high brittleness of alkali slag cementitious material is solved to a certain extent by adding plant fibers, there are still The preparation process is complex, the surface is deficient, such as efflorescence, especially because the natural fiber itself is hygroscopic, and the internal alkali concentration is seriously uneven during the formation of the material strength, resulting in different reaction degrees of the material and more cracks on the surface, which in turn leads to short-term cracking , For fibers with strong hygroscopicity (such as: cotton and linen fibers), they can only improve the short-term bending resistance. For natural fiber specimens over 28d in age, the mechanical strength is even higher than that of traditional geopolymers. varying degrees of reduction

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
  • A kind of high-performance gel material and preparation method thereof
  • A kind of high-performance gel material and preparation method thereof
  • A kind of high-performance gel material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The weight ratio of each raw material of the cementitious material in this example is shown in Table 1.

[0039] Table 1: Material Proportion Table

[0040]

[0041]

[0042] Preparation steps of cementitious material:

[0043] S1. Mix calcium chloride and sodium hydroxide, dry at 110°C after grinding, and set aside for later use;

[0044] S2.S95 slag powder is stirred at a frequency of 3500 rpm for 2min;

[0045] S3. Add sodium alginate, cationic polyacrylamide, liquid sodium silicate, sodium hydroxide and calcium chloride mixture during stirring, and continue stirring for 8min at the same stirring frequency;

[0046] S4. Add water and bamboo fiber, and continue stirring for 3 minutes to obtain a composite material slurry;

[0047] S5. Take out part of the composite material slurry for the fluidity test, then pour the remaining composite material slurry into the mold, fill it evenly and smooth it out, expose it to the air for 3 hours at room temperature, and t...

Embodiment 2

[0053] The material and preparation method of this embodiment are basically the same as those of the first embodiment, the difference is that the bamboo fiber is replaced by cotton and linen fiber.

[0054] The test results of unconfined compressive strength, flexural strength, shrinkage rate, and water absorption rate are shown in Table 3.

[0055] Table 3: Summary of test results

[0056]

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
specific surface areaaaaaaaaaaa
compressive strengthaaaaaaaaaa
activation indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-performance cementitious material and a preparation method thereof, belonging to the field of road engineering. The high-performance cementitious material is mainly composed of slag powder, sodium alginate, water reducing agent, liquid sodium silicate, vegetable fiber, sodium hydroxide and water in a specific weight ratio. Compared with the prior art, the high-performance cementitious material of the present invention has a higher fold-to-compression ratio, the molding time of the material is controllable, the initial setting time is in the range of 2h-3d, and the final molding compressive strength is as high as about 140Mpa, which can meet the requirements of construction. The technical requirements of engineering materials have good promotion and application value.

Description

technical field [0001] The invention relates to the field of road engineering, and specifically provides a high-performance cementitious material and a preparation method thereof. Background technique [0002] Geopolymer was first proposed by French scientist Davidovits and has the potential to replace traditional Portland cement. Since the raw materials are mostly derived from mineral waste and construction waste, they are now widely studied around the world. Compared with traditional cement, geopolymer Polymers have higher mechanical strength and shorter reaction time, and can complete engineering repair tasks. However, due to their ultra-high strength, geopolymers have obvious brittle characteristics, and traditional geopolymers have weak flexural resistance, so they are difficult to adapt to. Existing engineering needs. [0003] The patent document whose publication number is CN106746825A discloses "plant fiber reinforced alkali slag cementitious material and its prepar...

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 Patents(China)
IPC IPC(8): C04B28/00
CPCC04B28/006C04B2201/50C04B2201/52C04B24/38C04B24/2652C04B12/04C04B18/265C04B22/062C04B22/124
Inventor 周圣杰樊亮李永振侯佳林毕飞梁浩马士杰姜峰林江涛魏慧
Owner SHANDONG TRANSPORTATION INST