Fly ash-based concrete

A fly ash and concrete technology, applied in the field of concrete, can solve environmental pollution and other problems, and achieve the effects of solving pollution, excellent thermal stability, and excellent bond strength

Active Publication Date: 2018-09-18
GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the fly ash is not handled properly, it will also cause environmental pollution

Method used

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  • Fly ash-based concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Fly ash-based concrete was prepared by:

[0043] (1) Weigh 250 parts of fly ash ceramsite, 75 parts of fly ash ceramsite, 5 parts of silica fume, 100 parts of geopolymer cement, 1 part of water reducing agent and 7 parts of slag, 4 parts of Portland cement, 1 part of cellulose ether;

[0044] (2) Put the raw materials weighed in the step (1) in a pure slurry mixer and mix them for 5 minutes, then add 20 parts of water, fully mix them evenly, so that the configured concrete has fluidity;

[0045] (3) Pour the concrete prepared in step (2) into a cement mold with a size of 150cm*150cm*150cm, place the mold on a vibrating table and vibrate for 3 minutes to remove air bubbles inside the concrete;

[0046] (4) Leveling the concrete subjected to the vibration treatment in step (3), sealing it and curing it at room temperature for 28 days to obtain fly ash-based concrete.

[0047]Among them, the cylinder compressive strength of fly ash ceramsite is 15MPa, and the bulk densit...

Embodiment 2

[0050] Fly ash-based concrete was prepared by:

[0051] (1) Weigh 300 parts of fly ash ceramsite, 50 parts of fly ash ceramsite, 10 parts of silica fume, 100 parts of geopolymer cement, 0.5 parts of water reducing agent and 10 parts of slag, 3.5 parts of calcium hydroxide, carboxylate 0.5 part of methyl cellulose;

[0052] (2) Put the raw materials weighed in the step (1) in a pure slurry mixer and mix them for 6 minutes, then add 25 parts of water, fully mix them evenly, so that the configured concrete has fluidity;

[0053] (3) Pour the concrete prepared in step (2) into a cement mold with a size of 150cm*150cm*150cm, place the mold on a vibrating table and vibrate for 5 minutes to remove the air bubbles inside the concrete;

[0054] (4) Leveling the concrete subjected to the vibration treatment in step (3), sealing it and curing it at room temperature for 25 days to obtain fly ash-based concrete.

[0055] Among them, the cylinder compressive strength of fly ash ceramsite ...

Embodiment 3

[0058] Fly ash-based concrete was prepared by:

[0059] (1) Weigh 280 parts of fly ash ceramsite, 100 parts of fly ash ceramsite, 20 parts of silica fume, 100 parts of geopolymer cement, 1.5 parts of water reducing agent and 10 parts of slag, 2 parts of Portland cement, 1 part of sodium lignosulfonate;

[0060] (2) Put the raw materials weighed in step (1) in a pure slurry mixer and mix them for 8 minutes, then add 30 parts of water, fully mix them evenly, so that the configured concrete has fluidity;

[0061] (3) Pour the concrete prepared in step (2) into a cement mold with a size of 150cm*150cm*150cm, place the mold on a vibrating table and vibrate for 4 minutes to remove the air bubbles inside the concrete;

[0062] (4) Leveling the concrete subjected to the vibration treatment in step (3), sealing it and curing it at room temperature for 30 days to obtain fly ash-based concrete.

[0063] Among them, the cylinder compressive strength of fly ash ceramsite is 20MPa, and th...

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Abstract

The invention discloses fly ash-based concrete. The fly ash-based concrete is prepared from the following raw materials in parts by mass: 200 to 300 parts of coarse aggregate of artificial fly ash, 50to 150 parts of fine aggregate of artificial fly ash, 5 to 20 parts of silica fume, 100 parts of geopolymer cement, 0.5 to 3 parts of water reducing agent, 20 to 40 parts of water and 5 to 15 parts of additive. By adopting the fly ash-based concrete disclosed by the invention, the strength of the concrete is ensured, and the bulk density of the concrete can be lowered. Meanwhile, and the fly ash-based concrete has excellent thermal stability and chemical stability. The fly ash is taken as a substrate material, so that the fly ash can be fully reused, and the problem of environmental pollutioncaused by the fly ash is solved.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a fly ash-based concrete. Background technique [0002] Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. [0003] The aggregate in traditional concrete is natural sandstone, resulting in a higher bulk density of traditional concrete. At the same time, due to environmental protection issues, the mining of natural sand and gravel has been greatly restricted. Moreover, traditional concrete has poor high temperature resistance and fire resistance, which is prone to safety hazards. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/00
CPCC04B28/006C04B28/04C04B2201/20C04B2201/50C04B18/023C04B18/146C04B12/005C04B2103/302C04B18/141C04B24/383C04B22/064C04B24/18Y02P40/10
Inventor 王川行张宏生窦明岳
Owner GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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