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Full-hole-slag high-performance concrete and preparation method thereof

A technology of high-performance concrete and slag, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of high cost, insufficient strength and durability, and consumption of natural sand and gravel resources, etc., to increase Effects of compactness, consumption reduction, and engineering cost reduction

Inactive Publication Date: 2021-03-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the invention is to provide a full-hole slag high-performance concrete and its preparation method, which solves the problems that the existing concrete needs to consume natural sandstone resources, high cost, insufficient strength and durability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of whole hole slag high-performance concrete, by weight, raw material comprises:

[0023] 720 parts of PII·52.5 ordinary Portland cement, 310 parts of fly ash, 2100 parts of slag coarse aggregate, 1660 parts of slag fine aggregate, 45 parts of polycarboxylate superplasticizer, 320 parts of water, fly ash It is spherical, with continuous particle size distribution, the median particle size of the laser particle size is 10μm, and its SiO 2 The content is 52%, Al 2 o 3 The content is 22%, Fe 2 o 3 The CaO content is 4%, the CaO content is 12%, and the cave slag coarse aggregate is cave slag with a particle size of 5-25mm, and its apparent density is 2.796-2.955g / cm 3 , the crushing index is 8%, the slag fine aggregate is slag with a particle size of 0-5mm, its fineness modulus is 2.6, and the apparent density is 2.75-2.89g / cm 3 , bulk density is 1.63-1.78g / cm 3 , The stone powder content is 4.1%.

Embodiment 2

[0025] A kind of whole hole slag high-performance concrete, by weight, raw material comprises:

[0026] Ordinary Portland cement 720 parts, fly ash 310 parts, slag coarse aggregate 2100 parts, slag fine aggregate 1660 parts, polycarboxylate superplasticizer 45 parts, water 340 parts, fly ash is spherical, continuous Particle size distribution, the median particle size of the laser particle size is 10μm, and its SiO 2 The content is 52%, Al 2 o 3 The content is 22%, Fe 2 o 3 The CaO content is 4%, the CaO content is 12%, and the cave slag coarse aggregate is cave slag with a particle size of 5-25mm, and its apparent density is 2.796-2.955g / cm 3 , the crushing index is 8%, the slag fine aggregate is slag with a particle size of 0-5mm, its fineness modulus is 2.6, and the apparent density is 2.75-2.89g / cm 3 , bulk density is 1.63-1.78g / cm 3 , The stone powder content is 4.1%.

Embodiment 3

[0028] A kind of whole hole slag high-performance concrete, by weight, raw material comprises:

[0029] Ordinary Portland cement 720 parts, fly ash 310 parts, slag coarse aggregate 2100 parts, slag fine aggregate 1660 parts, polycarboxylate superplasticizer 45 parts, water 360 parts, fly ash is spherical, continuous Particle size distribution, the median particle size of the laser particle size is 10μm, and its SiO 2 The content is 52%, Al 2 o 3 The content is 22%, Fe 2 o 3 The CaO content is 4%, the CaO content is 12%, and the cave slag coarse aggregate is cave slag with a particle size of 5-25mm, and its apparent density is 2.796-2.955g / cm 3 , the crushing index is 8%, the slag fine aggregate is slag with a particle size of 0-5mm, its fineness modulus is 2.6, and the apparent density is 2.75-2.89g / cm 3 , bulk density is 1.63-1.78g / cm 3 , The stone powder content is 4.1%.

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Abstract

The invention discloses a full-hole-slag high-performance concrete and a preparation method thereof. The full-hole-slag high-performance concrete is prepared from the following raw materials by weight: 720-770 parts of ordinary Portland cement, 300-330 parts of fly ash, 2000-2200 parts of hole slag coarse aggregate, 1460-1760 parts of hole slag fine aggregate, 35-55 parts of a polycarboxylate superplasticizer and 320-370 parts of water, wherein the hole slag coarse aggregate is hole slag with a particle size of 5-25mm, and the particle size of the hole slag fine aggregate is 0-5mm, all the rawmaterials are sequentially mixed and stirred to prepare the full-hole-slag high-performance concrete. The hole slag is used as coarse aggregate and fine aggregate of the concrete, the prepared full-hole-slag high-performance concrete has excellent working performance and mechanical performance, consumption of natural gravel resources is reduced, the engineering construction efficiency is improved, and the engineering cost is reduced.

Description

technical field [0001] The invention relates to the preparation of building materials, in particular to a full-hole slag high-performance concrete and a preparation method thereof. Background technique [0002] Traditional concrete generally uses river sand as the fine aggregate, and pebbles or crushed stones as the coarse aggregate. Demand continues to increase. Over-exploitation of natural river sand will have a great negative impact on river bank stability, flood control safety, and ecological environment. Excessive extraction of gravel will destroy surface vegetation and cause a series of problems such as floods and droughts. [0003] The rapid advancement of infrastructure requires the consumption of a large amount of concrete raw materials. Existing concrete consumes natural sand and gravel resources and is expensive. Contents of the invention [0004] Purpose of the invention: The purpose of the invention is to provide a full-hole slag high-performance concrete and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/16
CPCC04B28/04C04B18/08C04B18/16C04B2103/302Y02W30/91
Inventor 蒋金洋孟凡旭辛忠毅郭乐刘莉刘志勇
Owner SOUTHEAST UNIV
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