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Thermal insulation building product and preparation method thereof

A thermal insulation and product technology, which is applied in the field of building materials technology and solid waste treatment, can solve the problems of large volume and no advantage in weight, and achieve the effects of high compressive strength, reduced apparent density, and stable mechanical properties

Active Publication Date: 2022-05-17
CHINA CONSTR FIFTH ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on the characteristics of the large capacity of the shield muck itself, the density of the produced product is close to that of concrete, so there is no advantage in weight

Method used

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  • Thermal insulation building product and preparation method thereof
  • Thermal insulation building product and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0033] This specific embodiment also includes the preparation method of the above-mentioned thermal insulation building products, including the following steps:

[0034]1) According to the ratio, mix the shield slag and active waste residue in the mixer and stir for 5-10 minutes until the first mixed material is obtained, then add the alkaline activator according to the ratio and continue to stir for 1-2 minutes; then add water and continue to stir for 1 -2min obtains the second mixed material of flowing state;

[0035] 2) According to the mass ratio of the total mass of foaming agent and foam stabilizer to water: 1:20-50, mix foaming agent and foam stabilizer with water to obtain foaming liquid, and foam the foaming liquid in a foaming machine Bubble to 0.25-1 times of the volume of the first mixed material to make foam;

[0036] 3) Stir the foam prepared in step 2) and the second mixed material prepared in step 1) for 2-3 minutes at a speed of 120-150 r / min to mix and mix, ...

Embodiment 1

[0039] The shield slag in this example is taken from argillaceous siltstone in a certain section of the Changsha subway, and the slag material is air-dried or dried, crushed, and passed through a 2mm sieve for use; the granulated blast furnace slag has a mesh number of 200; alkaline excitation In the agent, the sodium hydroxide solution concentration is 10mol / L, and the water glass modulus is 3.26, and the mass ratio of water glass and the described sodium hydroxide solution is 2:1; Foaming agent is anionic sodium lauryl sulfate ( SDS); The foam stabilizer is a modified FM-550 type silicone resin polyether emulsion with a polyether content of 55%, all of which are commercially available.

[0040] The thermal insulation building product in this embodiment is composed of the following raw materials: argillaceous siltstone shield dregs, granulated blast furnace slag, alkaline activator, foaming liquid; wherein, the first mixed material is Calculated, it is composed of 70% shield ...

Embodiment 2

[0047] The shield slag in this example is taken from the moderately weathered conglomerate in a certain section of the Changsha subway, and the slag material is air-dried or dried, crushed, and passed through a 2mm sieve for later use; the granulated blast furnace slag has a mesh number of 200; alkaline excitation In the agent, the sodium hydroxide solution concentration is 10mol / L, and the water glass modulus is 3.26, and the mass ratio of water glass and the described sodium hydroxide solution is 2:1; Foaming agent is anionic sodium lauryl sulfate ( SDS); The foam stabilizer is a modified FM-550 type silicone resin polyether emulsion with a polyether content of 55%, all of which are commercially available.

[0048] The thermal insulation building product in this embodiment is composed of the following raw materials: moderately weathered conglomerate shield slag, granulated blast furnace slag, alkaline activator, and foaming liquid; wherein, the first mixed material is Calcul...

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Abstract

The invention relates to a thermal insulation building product and a preparation method thereof. The thermal insulation building product is composed of the following raw materials: a first mixed material, an alkaline activator, and a foaming liquid; wherein, the first mixed material consists of 60%-70% of shield slag and 30%-40% of Composition of active waste residue; the mass ratio of alkaline activator to active waste residue is 0.5-1.8:1; the foaming liquid is prepared by foaming agent, foam stabilizer and water, wherein the mass ratio of foaming agent to foam stabilizer is 1 ‑5:1, the mass ratio of the total mass of foaming agent and foam stabilizer to water is 1:20‑50; the particle size of the shield dregs is 0‑2mm, the volume of the foaming liquid after foaming is the same as that of the shield machine The total volume ratio of slag and active waste is 0.25‑1:1. The present invention also includes a method for the preparation of the above-mentioned articles. The invention provides a light-weight thermal insulation construction product based on shield dregs with small bulk density, high compressive strength, stable mechanical properties and low thermal conductivity.

Description

technical field [0001] The invention relates to the fields of building material technology and solid waste treatment, in particular to a thermal insulation building product and a preparation method thereof. Background technique [0002] The existing treatment methods for muck are generally to transport the muck to the designated muck disposal site for open stacking or landfill in the project backfill area. Due to the high moisture content and great hazards of the shield muck, open-air stacking is prone to accidents such as landslides, which poses a great safety hazard, and will occupy a large amount of land resources and pollute the surrounding water and soil environment. [0003] Granulated blast furnace slag, fly ash, silica fume, etc. are all waste residues produced in the industrial production process, with large annual output, abundant sources, and certain dominant or recessive activities, so they are good auxiliary cementing materials. By combining the most difficult-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B38/10C04B7/24B28B1/50B28C5/38C04B111/40
CPCC04B28/00C04B38/10C04B7/246B28C5/388B28B1/50C04B2111/00017C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B24/16C04B24/42Y02P40/10
Inventor 习智琴李水生阳栋杨子汉
Owner CHINA CONSTR FIFTH ENG DIV CORP LTD
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