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

Self-repairing ecological cement road material and preparation method

A technology for ecological cement and road materials, applied in the field of building materials, can solve the problems of increasing cost and reducing economic benefits, and achieve the effect of improving toughness

Inactive Publication Date: 2018-08-24
CHENDU NEW KELI CHEM SCI CO LTD
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the above patents is that the phase change material uses paraffin as the raw material, which increases the cost and reduces its economic benefits.

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

Embodiment 1

[0025] A method for preparing self-repairing ecological cement road material, the steps are as follows:

[0026] S01: Bamboo powder is dried and dehydrated at a temperature of 55°C, then ground into a micron-sized fine powder, added to the phase change material stearic acid at a temperature of 50°C, and fully mixed. The mixing ratio of bamboo powder and phase change material is 1:3, prepared as a biomass phase change material.

[0027] S02: Add calcium hydrogen phosphate to the melted biomass phase change material, coat, filter, and sieve; absorb carbonic acid on fumed silica, add the melted biomass phase change material, coat, filter, and sieve; Calcium salt biomass phase change material capsules and carbonated biomass phase change material capsules;

[0028] S03: Mix calcium salt biomass phase change material capsules, carbonated biomass phase change material capsules, and cement material matrix at a ratio of 1:1:1 to obtain self-repairing ecological cement road materials. ...

Embodiment 2

[0031] A method for preparing self-repairing ecological cement road material, the steps are as follows:

[0032] S01: Dry and dehydrate the wood flour at 55°C, then grind it into micron-sized fine powder and add it to the phase change material at 55°C, mix thoroughly, the mixing ratio of wood flour and phase change material is 1:4 , prepared into a biomass phase change material.

[0033]S02: Add calcium hydrogen phosphate to the melted biomass phase change material, coat, filter, and sieve; absorb carbonic acid on fumed silica, add the melted biomass phase change material, coat, filter, and sieve; Calcium salt biomass phase change material capsules and carbonated biomass phase change material capsules;

[0034] S03: Mix calcium salt biomass phase change material capsules, carbonic acid biomass phase change material capsules, and cement material matrix at a ratio of 1:1:20 to obtain self-repairing ecological cement road materials.

[0035] Experimental inspection: the self-re...

Embodiment 3

[0037] A method for preparing self-repairing ecological cement road material, the steps are as follows:

[0038] S01: Dry and dehydrate corn stalk powder at a temperature of 55°C, then grind it into a micron-sized fine powder and add it to a phase change material at a temperature of 60°C, and mix thoroughly. The mixing ratio of corn stalk powder and phase change material is 1: 4. Preparation of biomass phase change materials.

[0039] S02: Add calcium hydrogen phosphate to the melted biomass phase change material, coat, filter, and sieve; absorb carbonic acid on fumed silica, add the melted biomass phase change material, coat, filter, and sieve; Calcium salt biomass phase change material capsules and carbonated biomass phase change material capsules;

[0040] S03: Mix calcium salt biomass phase change material capsules, carbonic acid biomass phase change material capsules, and cement material matrix at a ratio of 1:1:30 to obtain self-repairing ecological cement road material...

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

No PUM Login to View More

Abstract

The invention belongs to the field of building materials, and provides a self-repairing ecological cement road material and a preparation method. A biomass phase change material is used as a carrier for a self-repairing agent, the self-repairing agent comprises calcium salt and carbonic acid, and the biomass phase change material comprises one or more of bamboo powder, wood powder and corn stalk powder and a phase change material. The preparation method comprises the following steps: grinding the biomass material into fine powder, adding into the phase change material, fully mixing to preparethe biomass phase change material, adsorbing the carbonic acid by porous silicon dioxide, and coating with the biomass phase change material to obtain a capsule; wrapping the calcium salt with the biomass phase change material to obtain a capsule; then, adding the two microcapsules prepared in the steps into a cement material matrix. When a road is damaged, the phase change material is dissolved when the temperature rises, and then Ca<+> reacts with the carbonic acid to produce calcium carbonate for repairing the road.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a self-repairing ecological cement road material and a preparation method thereof. Background technique [0002] Cement concrete refers to the collective designation of engineering composite materials that are made of cement, sand, stone, etc. mixed with water. Generally speaking, the term concrete refers to cement as cementing material, sand and stone as aggregate; mixed with water (with or without admixtures and admixtures) in a certain proportion, and obtained by stirring, molding and curing. Cement concrete, also known as ordinary concrete, is widely used in civil engineering. Cement concrete pavement has the advantages of large bearing capacity, good stability, long service life, and low daily maintenance costs. It is now widely used in airport runways, expressways, trunk roads, urban roads, factory and mine roads, parking yards, and roads in tunnels. and wate...

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): C04B28/00C04B20/10
CPCC04B28/00C04B20/1055C04B2111/0075C04B18/24C04B22/103C04B22/16C04B14/064
Inventor 陈庆曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD