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Composite mineral admixture based on granite stone powder and preparation method thereof

A granite stone powder and composite mineral technology, applied in the field of building materials, can solve the problems of stone powder environmental pollution, mineral admixture adulteration, hidden safety hazards, etc., and achieve the effect of high early strength, large fluidity ratio, and high activity index

Inactive Publication Date: 2021-02-26
GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous consumption of raw materials brought about by large-scale construction, many regions and projects are facing the dilemma of shortage of high-quality conventional raw materials for concrete: high-quality traditional mineral admixtures such as fly ash and slag powder are increasingly in short supply, and even mineral admixtures appear in some areas. Mixture adulteration, counterfeiting and other issues have seriously affected the quality of concrete projects and caused potential safety hazards
[0003] At present, with the shortage of river sand resources, the application of machine-made sand is gradually becoming the mainstream of concrete fine aggregate. In the process of machine-made sand production, due to the strict restrictions on the content of machine-made sand and stone powder in the standard specifications, a large amount of stone powder is separated and caused environmental pollution

Method used

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  • Composite mineral admixture based on granite stone powder and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A composite mineral admixture of granite stone powder, calculated according to parts by weight, includes the following components: 60-80 parts of granite stone powder, 10-20 parts of kiln dust, 10-30 parts of steel slag, 5-5 parts of silica fume 10 parts, 5-10 parts of activator and 5-10 parts of ZnO series ceramic particles; wherein, the steel slag is silicon steel slag.

[0027] Its preparation method is as follows:

[0028] Put 60-80 parts of granite stone powder, 10-20 parts of kiln dust, 10-30 parts of steel slag, 5-10 parts of silica fume, 5-10 parts of activator and 5-10 parts of ZnO series ceramic particles into a ball mill for 2-2 3h.

Embodiment 2

[0029] Embodiment 2: A composite mineral admixture of granite stone powder, calculated according to parts by weight, includes the following components: 60 parts of granite stone powder, 10 parts of kiln dust, 10 parts of steel slag, 5 parts of silica fume, 5 parts of activator, 5 parts of ZnO ceramic particles and 5 parts of polysilazane; wherein, the steel slag is silicon steel slag.

[0030] Its preparation method is as follows:

[0031] S1. Put 60 parts of granite stone powder, 10 parts of kiln dust, 10 parts of steel slag, 5 parts of silica fume, 5 parts of activator and 5 parts of ZnO series ceramic particles into a ball mill for 2-3 hours to obtain mixture A;

[0032] S2. Add 5 parts of polysilazane to mixture A and stir.

Embodiment 3

[0033] Embodiment 3: A composite mineral admixture of granite stone powder, calculated according to parts by weight, includes the following components: 60-80 parts of granite stone powder, 10-20 parts of kiln dust, 10-30 parts of steel slag, 5-30 parts of silica fume 10 parts, 5-10 parts of activator, 5-10 parts of ZnO series ceramic particles, 5 parts of perhydropolysilazane and 5 parts of sodium xanthate; wherein, the steel slag is silicon steel slag.

[0034] Its preparation method is as follows:

[0035] S1. Put 60 parts of granite stone powder, 10 parts of kiln dust, 10 parts of steel slag, 5 parts of silica fume, 5 parts of activator and 5 parts of ZnO series ceramic particles into a ball mill for 2-3 hours to obtain mixture A;

[0036] S2. Add 5 parts of perhydropolysilazane to mixture A and stir to obtain mixture B;

[0037] S3. Add 5 parts of sodium xanthate to the mixture B, and keep stirring to obtain a composite mineral admixture.

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Abstract

The invention belongs to the technical field of building materials, and relates to concrete, in particular to a composite mineral admixture of granite stone powder and a preparation method thereof. The composite mineral admixture comprises the following components in parts by weight: 60-80 parts of granite powder, 10-20 parts of kiln ash, 10-30 parts of steel slag, 5-10 parts of silica fume, 5-10parts of an excitant and 5-10 parts of ZnO series ceramic particles, wherein the steel slag is silicon steel slag. By adding xanthate and ZnO series ceramic particles, the granite stone powder is usedas a composite mineral admixture, the activity index is high, the fluidity ratio is large, and the concrete mixed with the composite mineral admixture has the advantages of being high in early strength, small in contractibility and high in crack resistance and has an industrial value.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a composite mineral admixture, in particular to a composite mineral admixture based on granite stone powder and a preparation method thereof. Background technique [0002] Concrete is the most important bulk material for infrastructure construction, and the annual global consumption has reached 5 billion cubic meters. With the continuous consumption of raw materials brought about by large-scale construction, many regions and projects are facing the dilemma of shortage of high-quality conventional raw materials for concrete: high-quality traditional mineral admixtures such as fly ash and slag powder are increasingly in short supply, and even mineral admixtures appear in some areas. Mixture adulteration, fraud and other issues have seriously affected the quality of concrete projects, causing safety hazards. [0003] At present, with the shortage of river sand resources, th...

Claims

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Application Information

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IPC IPC(8): C04B22/08C04B24/42C04B24/16C04B18/14C04B18/10C04B14/14
CPCC04B40/0039C04B14/048C04B18/10C04B18/142C04B18/146C04B14/30C04B22/0006C04B22/00C04B24/42C04B24/16Y02W30/91
Inventor 刘方何涛谭立心王中文荣国城钟建锋罗平生蔡炎标蔡俊华吴琪锋林弟刘鑫洋
Owner GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG