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Artificial agglomerated stone waste residue-based cement mortar reinforcing agent and preparation method thereof

A technology of artificial granite and cement mortar, which is applied in the field of building materials, can solve the problems of low compressive and bending strength, limit the application of cement mortar, and high brittleness, and achieve low cost, broad market application prospects, and reduce water reduction. The effect of dosage

Inactive Publication Date: 2021-03-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional cement mortar has low compressive and flexural strength, high brittleness, and is also easily damaged by external corrosive media, causing serious bleeding, which greatly limits the application of cement mortar

Method used

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  • Artificial agglomerated stone waste residue-based cement mortar reinforcing agent and preparation method thereof
  • Artificial agglomerated stone waste residue-based cement mortar reinforcing agent and preparation method thereof
  • Artificial agglomerated stone waste residue-based cement mortar reinforcing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Put 630 parts of cement, 1080 parts of river sand, and 120 parts of artificial rock waste slag powder into the cement mortar mixer, stir at low speed for 2 minutes, take 1.5 parts of carboxylic acid type high-performance water reducer, and mix 283.5 parts of water (keep water The gray ratio is 0.45), mixed and made into a water reducer solution, added to the mixer, stirred rapidly for 2 minutes, poured the obtained cement mortar into the mold and vibrated it, and left it for 2 days. 95±5%, and the temperature is 20±2℃ in saturated lime water for 28 days. According to the national standard GB / T 17671-1999, the flexural strength and compressive strength of the cured cement mortar specimens were tested.

Embodiment 2

[0031] Put 630 parts of cement, 1080 parts of river sand, and 120 parts of artificial rock waste slag powder into the cement mortar mixer, stir at low speed for 2 minutes, take 1 part of carboxylic acid type high-performance water reducer, and mix 283.5 parts of water (keep water The gray ratio is 0.45), mixed and made into a water reducer solution, added to the mixer, stirred rapidly for 2 minutes, poured the obtained cement mortar into the mold and vibrated it, and left it for 2 days. 95±5%, and the temperature is 20±2℃ in saturated lime water for 28 days. According to the national standard GB / T 17671-1999, the flexural strength and compressive strength of the cured cement mortar specimens were tested.

Embodiment 3

[0033] Get 120 parts of artificial stone waste slag powder, 10 parts of polyacrylate emulsion, mix and stir for 10 minutes in proportion to obtain the artificial stone waste slag powder modified by polyacrylate emulsion, and mix it with 630 parts of cement and 1080 parts of river sand , add it to the cement mortar mixer, stir at low speed for 2 minutes, take 1.5 parts of carboxylic acid type high-performance water reducer, mix with 283.5 parts of water (keep the water-cement ratio at 0.45), mix it into a water reducer solution, and add it to the mixer In the process, stir quickly for 2 minutes, pour the obtained cement mortar into the mold and vibrate it, and place it for 2 days. Finally, the cement mortar specimen is cured in saturated lime water with a humidity of 95±5% and a temperature of 20±2°C for 28 days. That's it. According to the national standard GB / T 17671-1999, the flexural strength and compressive strength of the cured cement mortar specimens were tested.

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Abstract

The invention discloses an artificial agglomerated stone waste residue-based cement mortar reinforcing agent and a preparation method thereof. The reinforcing agent comprises the following components:artificial agglomerated stone waste residues, a polymer emulsion and a water reducing agent. The preparation method comprises the following steps: drying and crushing the artificial agglomerated stone waste residue, modifying the artificial agglomerated stone waste residue powder by using the polymer emulsion, and finally mixing the artificial agglomerated stone waste residue powder or the polymer emulsion modified waste residue powder with the water reducing agent to obtain the artificial agglomerated stone waste residue-based cement mortar reinforcing agent. The cement mortar reinforcing agent provided by the invention can establish strong interface interaction with cement particles and hydrated products thereof, effectively reduce the porosity and the number of cracks in an interface transition region, greatly improve the compressive strength and the bending strength of cement mortar, reduce the dosage of a water reducing agent under the condition of ensuring the strength, and is high in economic benefit. The preparation method is simple and has an extremely wide market application prospect.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an artificial granite waste slag-based cement mortar reinforcing agent and a preparation method thereof. Background technique [0002] Artificial granite is a kind of artificial stone made of crushed stone or powder produced in natural stone processing as the main raw material, and unsaturated resin as the binding material. It is widely used in building decoration materials. However, during the process of polishing and grinding, a large amount of artificial granite waste residue will be produced. The main component is calcium carbonate, and the surface contains unsaturated polyester residues, making it difficult for secondary processing and cannot be degraded in the natural environment. Most of them are disposed of in centralized landfill, causing serious environmental pollution. [0003] Cement mortar is one of the main building materials and has a great demand in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B20/02C04B28/04C04B18/16
CPCC04B20/023C04B28/04C04B40/0039C04B2201/50C04B2201/52C04B18/16C04B2103/302C04B14/068Y02W30/91
Inventor 张新星黄鑫杨昕
Owner SICHUAN UNIV
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