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Iron tailing lightweight phase change concrete and preparation method thereof

A technology of iron tailings and light phase, applied in the field of building materials, can solve the problems of drying shrinkage cracking, poor temperature adjustment effect, poor stability of iron tailings, etc., and achieve the effect of blocking heat transmission

Pending Publication Date: 2021-12-28
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purposes of the present invention is to provide a lightweight phase-change concrete for iron tailings, which solves the problem of high cost of phase-change temperature-adjusting concrete in the prior art, poor temperature adjustment effect, poor stability of iron tailings, shrinkage and cracking, Problems such as high maintenance costs

Method used

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  • Iron tailing lightweight phase change concrete and preparation method thereof
  • Iron tailing lightweight phase change concrete and preparation method thereof
  • Iron tailing lightweight phase change concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment discloses the preparation method of iron tailings lightweight phase change concrete of the present invention, specifically:

[0050] Take 500g of cement, 2000g of quicklime, 1500g of fly ash, 3500g of river sand, 4000g of iron tailings, 20g of water-absorbing resin, and 20g of sodium hydroxide for dry mixing and uniformly obtain dry-mixed mixing raw materials;

[0051] Take 15g of aluminum powder paste, 10g of water reducer, and 6500g of water and stir evenly to obtain a mixed solution;

[0052] Pour the obtained mixed solution into the dry-mixed mixture obtained above, stir for 2 minutes and then quickly mold it;

[0053] Put it into a 100*100*100 iron mold and put it into a steam curing box, steam it at 60°C for 60 minutes and take it out; cut off the bread head with a saw blade, and put the light concrete with the bread head removed into the steam curing box, After steam curing at 60°C for 5 hours, take it out for room temperature curing; demould aft...

Embodiment 2

[0059] This embodiment discloses the preparation method of iron tailings lightweight phase change concrete of the present invention, specifically:

[0060] Take 500g of cement, 2000g of quicklime, 1500g of fly ash, 3500g of river sand, 4000g of iron tailings, 25g of water-absorbing resin, and 40g of sodium hydroxide for dry mixing and uniformly obtain dry-mixed mixing raw materials;

[0061] Take 13g of aluminum powder paste, 20g of water reducer, and 6000g of water and stir evenly to obtain a mixed solution;

[0062] Pour the obtained mixed solution into the dry-mixed mixture obtained above, stir for 2 minutes and then quickly mold it;

[0063] Put it into a 100*100*100 iron mold and put it into a steam curing box, steam it at 60°C for 60 minutes and take it out; cut off the bread head with a saw blade, and put the light concrete with the bread head removed into the steam curing box, After steaming at 60°C for 5 hours, take it out for normal temperature curing; demould after...

Embodiment 3

[0065] This embodiment discloses the preparation method of iron tailings lightweight phase change concrete of the present invention, specifically:

[0066] Take 1500g of cement, 1000g of quicklime, 1000g of fly ash, 4500g of river sand, 3500g of iron tailings, 35g of water-absorbing resin, and 60g of sodium hydroxide for dry mixing and uniformly obtain the dry mixing mixing raw materials;

[0067] Take 10g of aluminum powder paste, 40g of water reducer, and 5500g of water and stir evenly to obtain a mixed solution;

[0068] Pour the obtained mixed solution into the dry-mixed mixture obtained above, stir for 2 minutes and then quickly mold it;

[0069] Put it into a 100*100*100 iron mold and put it into a steam curing box, steam it at 60°C for 60 minutes and take it out; cut off the bread head with a saw blade, and put the light concrete with the bread head removed into the steam curing box, After steaming at 60°C for 5 hours, take it out for normal temperature curing; demould...

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Abstract

The invention discloses iron tailing lightweight phase change concrete and a preparation method thereof, belonging to the technical field of building materials. The invention aims to solve the problems of high cost and poor temperature adjustment effect of phase change temperature adjustment concrete, poor stability of iron tailings, dry shrinkage cracking, high maintenance cost and the like in the prior art. The iron tailing lightweight phase change concrete is prepared from the following raw materials in parts by mass: 5 to 15 parts of cement, 10 to 20 parts of quick lime, 10 to 15 parts of fly ash, 35 to 45 parts of river sand, 30 to 40 parts of iron tailings, 0.08 to 0.15 part of aluminum powder paste, 0.2 to 0.5 part of water-absorbent resin, 0.2 to 0.8 part of an active auxiliary agent, 55 to 65 parts of water and 0.1 to 0.5 part of a water reducing agent. The iron tailing lightweight phase change concrete provided by the invention has good workability and good constructability in a preparation process; collapsing can be effectively prevented in early-stage maintenance; maintenance conditions are simple, and hydration reaction can be continued; stability is good, and cracking is prevented; heat is effectively absorbed and a temperature is reduced when a fire disaster occurs; and a temperature can be adjusted according to humidity to keep a comfortable environment.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a lightweight phase-change concrete with iron tailings and a preparation method thereof. Background technique [0002] Lightweight concrete is a composite material with low density, light weight, good thermal insulation and good seismic performance. Lightweight concrete has good mechanical properties and economic benefits, and can better compensate for the shortcomings of ordinary concrete such as brittle failure; in construction projects, the use of lightweight concrete can reduce the ratio of steel bars and structural weight, save engineering costs, improve Earthquake structural response. [0003] In order to create more comfortable living conditions and save energy, phase change temperature-adjusting building materials have become a research hotspot of lightweight concrete. Adding phase change materials to building materials can not only be used as bea...

Claims

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Application Information

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IPC IPC(8): C04B28/12C04B38/02C04B18/12C04B24/24C04B111/40C04B111/28
CPCC04B28/12C04B38/02C04B18/12C04B24/24C04B2111/00017C04B2111/40C04B2201/50C04B2111/28C04B7/02C04B18/08C04B14/06C04B22/04C04B22/062Y02W30/91
Inventor 阳黎王宁林燕夏艳晴腾银见张雨晴
Owner JIAHUA SPECIAL CEMENT
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