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Premixed pump concrete prepared from coal oil residues and preparation method thereof

A pumping concrete and coal-to-oil technology, which is applied in the comprehensive utilization of solid waste resources and building materials, can solve the problem of low early strength of ready-mixed pumped concrete, high carbon emissions, and slow hydration speed of coal-to-oil residue and other issues, to achieve good durability, reduce carbon emissions, and change the effect of crystal form and structure

Active Publication Date: 2022-05-13
SHEXIAN QINGZHANG CEMENT MFG CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydration rate of coal-based oil residue is slow, which makes the prepared ready-mixed pumped concrete low in early strength and has high carbon emissions. Therefore, it is of great significance to propose a new utilization method of coal-based oil residue

Method used

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  • Premixed pump concrete prepared from coal oil residues and preparation method thereof
  • Premixed pump concrete prepared from coal oil residues and preparation method thereof
  • Premixed pump concrete prepared from coal oil residues and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Weigh each raw material according to Table 1, mix and grind cement, coal oil residue and gypsum until the specific surface area is 560m 2 / kg, to prepare the gelled material. The stability test of the cementitious material is carried out in accordance with the provisions of GB / T 1346-2011 "Cement Standard Consistency Water Consumption, Setting Time, and Stability Test Methods". After testing by the cake test method and Raymond clamp method, the stability is qualified .

[0050] The cementitious material is mixed with fine aggregate (sand), coarse aggregate (stone), water reducer (sodium polycarboxylate) and water to obtain concrete.

[0051] Table 1 raw material ratio (unit: g)

[0052]

Embodiment 2

[0054] Weigh each raw material according to Table 2, mix and grind cement, coal oil residue and gypsum until the specific surface area is 560m 2 / kg, to prepare the gelled material. The stability test of the cementitious material is carried out in accordance with the provisions of GB / T 1346-2011 "Cement Standard Consistency Water Consumption, Setting Time, and Stability Test Methods". After testing by the cake test method and Raymond clamp method, the stability is qualified .

[0055] The cementitious material is mixed with fine aggregate (sand), coarse aggregate (stone), water reducer (sodium polycarboxylate) and water to obtain concrete.

[0056] Table 2 raw material ratio (unit: g)

[0057]

Embodiment 3

[0059] Weigh each raw material according to Table 3, mix and grind cement, coal oil residue and gypsum until the specific surface area is 560m 2 / kg, to prepare the gelled material. The stability test of the cementitious material is carried out in accordance with the provisions of GB / T 1346-2011 "Cement Standard Consistency Water Consumption, Setting Time, and Stability Test Methods". After testing by the cake test method and Raymond clamp method, the stability is qualified .

[0060] Stir and mix the cementitious material with fine aggregate (sand), coarse aggregate (stone), water reducer (sodium potassium polycarboxylate) and water to obtain concrete.

[0061] Table 3 raw material ratio (unit: g)

[0062]

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Abstract

The invention discloses premixed pump concrete prepared from coal oil residues and a preparation method of the premixed pump concrete, and belongs to the technical field of solid waste resource comprehensive utilization and building materials. The premixed pumped concrete is prepared from the following raw materials in parts by weight: 200-260 parts of coal oil residues, 110-140 parts of cement, 70-100 parts of gypsum, 700-750 parts of fine aggregate, 1100-1200 parts of coarse aggregate, 4-6 parts of a water reducing agent and 125-150 parts of water, and the cement, the coal oil residues and the gypsum in parts by weight are mixed and ground to prepare a cementing material; and uniformly stirring and mixing the cementing material with the fine aggregate, the coarse aggregate, the water reducing agent and the water to obtain the premixed pumped concrete prepared from the coal oil residues. According to the invention, two industrial solid wastes, namely the coal oil residue and the desulfurized gypsum, are co-processed, so that waste is turned into wealth, and the prepared premixed pump concrete is high in early hydration rate, relatively high in early strength and excellent in performance.

Description

technical field [0001] The invention relates to ready-mixed pumped concrete prepared from coal-based oil residue and a preparation method thereof, belonging to the technical fields of comprehensive utilization of solid waste resources and building materials. Background technique [0002] The characteristics of my country's resources are rich in coal resources, but relatively poor in oil and natural gas. For a long period of time in the future, my country's energy structure dominated by coal will not change. From the point of view, using coal as raw material to transform it into liquid oil and realize industrialization as soon as possible is an important strategic measure to alleviate the contradiction between my country's oil supply and demand and ensure energy security. [0003] Coal-to-oil residue is the residue left after coal is completely gasified in the gasifier in the coal-to-oil industry process. It is the remaining substance after the combustibles in coal are complet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B2111/00017C04B18/049C04B22/145C04B14/06C04B14/04C04B2103/302Y02W30/91
Inventor 琚永健温国平倪文巴浩静赵智利杨兑亨杨志江张广田
Owner SHEXIAN QINGZHANG CEMENT MFG CO LTD
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