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A kind of stone powder concrete admixture and preparation method thereof

A composite admixture and concrete technology, which is applied in the field of building materials, can solve problems such as flushing into rivers, waste of resources, and environmental pollution, and achieve the effects of reducing water consumption, protecting the environment, and reducing the heat of hydration

Active Publication Date: 2018-05-22
山东众森新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no effective treatment method for stone powder disclosed at present. At present, only a small part is used for laying roads, and most of them are dumped or washed into rivers, which not only causes a lot of waste of resources, but also seriously pollutes the environment, making the production of machine-made sand Enterprises worry about the way out of stone powder

Method used

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  • A kind of stone powder concrete admixture and preparation method thereof
  • A kind of stone powder concrete admixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1. A kind of stone powder concrete composite admixture, comprises the raw material of following weight percent:

[0027] Stone powder 20%, smelting waste residue 20%, burnt clay 10%, pozzolanic materials 15%, cement clinker 25%, dolomite 5%, gypsum 5%.

[0028] The smelting waste slag is phosphorus slag, nickel slag, steel slag, slag, iron slag, lead-zinc slag and copper slag mixed in equal proportions.

[0029] The pozzolanic material is a natural pozzolanic material.

[0030] The preparation method steps are as follows:

[0031] (1) Take the above-mentioned raw materials according to weight percentage.

[0032] (2) Grind the above-mentioned materials except stone powder separately, and the particle size is controlled to 10-32mm; add 0.05%-0.3% activator and 0.3%-0.5% functional regulator for each material during the separate grinding process.

[0033] (3) Then all the materials are uniformly mixed by a combination mixer to obtain a composite admixture, a...

Embodiment 2

[0034] Embodiment 2. A kind of stone powder concrete composite admixture, comprises the raw material of following weight percent:

[0035] Stone powder 62%, smelting waste slag 10%, burnt clay 5%, pozzolanic materials 5%, cement clinker 10%, dolomite 3%, gypsum 5%.

[0036] The smelting waste slag is phosphorus slag, nickel slag, steel slag, and slag mixed according to the mass ratio of 1:2:3.

[0037] The pozzolanic material is coal gangue.

[0038] The preparation method steps are as follows:

[0039] (1) Take the above-mentioned raw materials according to weight percentage.

[0040] (2) All materials are mixed and ground with a three-chamber tube mill, the fineness of 45 μm is controlled between 10% and 13%, and 0.05% -0.3% activator + 0.3% -0.5% functional regulator is added during the grinding process After milling, a composite admixture is obtained.

Embodiment 3

[0041] Embodiment 3. A kind of stone powder concrete composite admixture, comprises the raw material of following percentage by weight:

[0042] 45% stone powder, 20% smelting waste residue, 10% burnt clay, 5% pozzolanic material, 10% cement clinker, 5% dolomite, 5% gypsum, the sum of the weight percentages of the above components is 100%.

[0043] The smelting waste slag is iron ore slag.

[0044] The pozzolanic material is a mixture of natural pozzolanic material and andesite in a mass ratio of 2:1.

[0045] The preparation method steps are as follows:

[0046] (1) Take the above-mentioned raw materials according to weight percentage.

[0047] (2) Grind the above-mentioned materials except stone powder separately, and the particle size is controlled to 10-32mm; add 0.05%-0.3% activator and 0.3%-0.5% functional regulator for each material during the separate grinding process.

[0048] (3) Then all the materials are uniformly mixed by a combination mixer to obtain a composi...

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Abstract

The invention provides a stone flour concrete composite admixture and a preparation method thereof. The admixture comprises, by weight, 20-70% of stone flour, 10-40% of smelting waste slag, 0-25% of calcined clay, 0-25% of a pozzolanic material, 10-40% of cement clinker, 0-10% of dolomite and 0-15% of gypsum. Cooperation of various substances makes the flour become one of raw materials for preparing the composite admixture, so wastes are changed into valuables; and the stone flour unsuitable for preparing the concrete composite admixture become one of the raw materials for preparing the concrete composite admixture, and can substitute increasingly scarce ore powder and parts of cement, so the raw material shortage problem of building engineering is solved, the engineering cost is reduced, the reasonable utilization problem of stone flour generated in machine production of sand is solved, resource wastes are reduced, environment is protected, and the composite admixture and the preparation method have very good economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a stone powder concrete composite admixture and a preparation method thereof. Background technique [0002] With the rapid growth of the country's economic construction, the requirements for the quantity and quality of sand for concrete aggregates are constantly increasing. At the same time, natural sand resources are gradually depleting, and the market urgently needs high-quality natural sand substitutes. As a result, machine-made sand came into being and developed rapidly. In the process of producing machine-made sand, the particle size of the produced machine-made sand varies, and the particles with a particle size of less than 75 μm are defined as stone powder. Stone powder is an inevitable product in the process of producing machine-made sand. [0003] At present, the output of stone powder is huge. According to statistics, in 2013, Shandong Province produced a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/16C04B18/14C04B18/02
CPCC04B28/04C04B18/16C04B18/145C04B18/144C04B18/142C04B18/141C04B18/025C04B14/14C04B14/26C04B2103/0068C04B18/12Y02W30/91
Inventor 于吉涛冀成新赵春新岳光亮
Owner 山东众森新材料有限公司
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