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A kind of porous lightweight steel slag concrete that can be quickly planted and its preparation method

A light-weight steel and concrete technology, applied in botany equipment and methods, planting substrates, ceramic products, etc., can solve the problems of reduced strength, environmental pollution, etc., achieve reduced shrinkage, facilitate plant growth, and enhance slump-preserving performance Effect

Active Publication Date: 2020-09-22
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, scholars in our country are also committed to the research of plant-growing concrete with better performance. However, there are few high-performance plant-growing concrete that can have the above indicators at the same time. At the same time, its strength will decrease
[0004] In addition, most of the waste steel slag produced by steelmaking in steelmaking plants is discarded or piled up, causing environmental pollution. How to effectively use waste steel slag and turn waste into treasure is also a measure that benefits the country and the people

Method used

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  • A kind of porous lightweight steel slag concrete that can be quickly planted and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Raw material composition

[0031] In this embodiment, the porous lightweight steel slag concrete that can be quickly planted has the following composition by weight:

[0032] 100 parts of steel slag coarse aggregate, 70 parts of cement, 40 parts of water, 0.45 parts of water reducer, 4 parts of gypsum, 7 parts of steel slag powder, 4 parts of slag, 0.4 parts of urea, 0.6 parts of magnesium ammonium phosphate, and 0.5 parts of vermiculite.

[0033] The particle size of the steel slag coarse aggregate is 10-25mm.

[0034] The water mentioned is the mixing water that complies with the industry standard JGJ63-2006 "Water for Concrete".

[0035] The cement is Portland cement with a strength grade of 42.5.

[0036] The water reducer is a polycarboxylate water reducer, and the solid content of the polycarboxylate water reducer is 39-41%.

[0037] The particle size of the steel slag fine powder is 30 μm-40 μm. The steel slag fine powder is made of converter steel slag o...

Embodiment 2

[0049] (1) Raw material composition

[0050] In this embodiment, the porous lightweight steel slag concrete that can be quickly planted has the following composition by weight:

[0051] Steel slag coarse aggregate 150 parts, cement 80 parts, water 45 parts, water reducing agent 0.55 parts, gypsum 6 parts, steel slag powder 9 parts, slag 5 parts, urea 0.4 parts, magnesium ammonium phosphate 0.4 parts, vermiculite 0.6 parts

[0052] Other technical indexes are with embodiment 1.

[0053] (2) Preparation method

[0054] (1) Prepare materials according to the ratio of step (1).

[0055] (2) Add cement, water, and water reducing agent into the mixer and stir for 1.5 minutes.

[0056] (3) Add steel slag coarse aggregate under stirring state, and then continue stirring for 1 min.

[0057] (4) Add the pre-mixed uniform gelling material and vermiculite, and stir for 2 minutes to prepare a slurry.

[0058] (5) Pour the slurry into the mold, and put it into the curing room for stand...

Embodiment 3

[0063] (1) Raw material composition

[0064] In this embodiment, the porous lightweight steel slag concrete that can be quickly planted has the following composition by weight:

[0065] 125 parts of steel slag coarse aggregate, 75 parts of cement, 43 parts of water, 0.5 parts of water reducer, 5 parts of gypsum, 8 parts of steel slag powder, 4 parts of slag, 0.4 parts of urea, 0.5 parts of ammonium magnesium phosphate, and 0.55 parts of vermiculite.

[0066] Other technical indexes are with embodiment 1.

[0067] (2) Preparation method

[0068] (1) Prepare materials according to the ratio of step (1).

[0069] (2) Add cement, water and water reducing agent into the mixer and stir for 2 minutes.

[0070] (3) Add steel slag coarse aggregate while stirring, and then continue stirring for 1.5 minutes.

[0071] (4) Add the cementitious material and vermiculite that have been uniformly mixed in advance, and stir for 2.5 minutes to prepare a slurry.

[0072] (5) Pour the slurry ...

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Abstract

The invention relates to a rapidly plantable porous lightweight steel slag concrete and a preparation method thereof. The rapidly plantable porous lightweight steel slag concrete comprises the following components by weight: 100-150 parts of steel slag coarse aggregate, 70-80 parts of cement, 40-45 parts of water, 0.45-0.55 part of a water reducing agent, 15-20 parts of a cementing material, 0.8-1.0 part of a slow-release fertilizer, and 0.5-0.6 part of vermiculite. The preparation method includes: firstly preparing the raw materials, then adding cement, water and the water reducing agent, performing stirring, then adding the steel slag coarse aggregate, the cementing material, the slow-release fertilizer and vermiculite, conducting mold injection and mold release, then conducting standardcuring in a curing chamber, thus obtaining the rapidly plantable porous lightweight steel slag concrete. Compared with the prior art, the method provided by the invention makes full use of industrialwaste residue as the raw material, the prepared concrete has the advantages of low dry density, high compressive strength, good heat preservation and thermal insulation effects, energy saving and environmental protection, and high porosity, and can be rapidly planted.

Description

technical field [0001] The invention belongs to the field of steel slag concrete, and mainly relates to a porous lightweight steel slag concrete capable of rapid planting and a preparation method thereof. Background technique [0002] Cement concrete is widely used in various infrastructure constructions due to its rich raw material resources, low price, good plasticity, high compressive strength, and excellent durability. However, for a long time, human beings have only noticed that concrete is used by human beings and brings convenience and benefits to human beings, but has ignored the negative impact of concrete on human beings and the earth's environment. Therefore, how to make the produced concrete can be applied to improve the environment has become a new topic. Therefore, the development of environmentally friendly concrete has been put on the agenda. In recent years, a plant-grown concrete that can protect the environment and improve ecological conditions has attra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B38/00C04B18/14A01G24/10A01G24/15
CPCC04B18/141C04B18/142C04B28/14C04B38/0041C04B2111/00284C04B2201/50C04B7/02C04B22/002C04B24/24C04B24/126C04B22/16C04B14/202C04B38/0074Y02W30/91
Inventor 包红旭苏弘治杨华张浩张欣张馨月李良玉吕志忠王俭刘唯玉
Owner LIAONING UNIVERSITY
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