Yellow River sand ultra-high-performance concrete and preparation method thereof

An ultra-high performance, concrete technology, applied in the field of building materials, can solve the problems of dust pollution, ecological damage, and low strength of Yellow River sand concrete, and achieve the effects of reducing environmental impact, increasing storage capacity, and reducing siltation.

Active Publication Date: 2021-02-05
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to use the Yellow River sand instead of quartz sand to prepare the Yellow River sand ultra-high performance concrete, thereby solving the technical problem of the relatively low strength of the Yellow River sand concrete in the prior art, and at the same time alleviating the dust pollution and ecological problems of the ultra-high performance concrete. sabotage problem

Method used

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  • Yellow River sand ultra-high-performance concrete and preparation method thereof
  • Yellow River sand ultra-high-performance concrete and preparation method thereof
  • Yellow River sand ultra-high-performance concrete and preparation method thereof

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Embodiment

[0036]1. Raw materials

[0037]In the embodiment of the present invention, the materials used are first-grade fly ash (Rongchangsheng Environmental Protection Material Factory), microsilica fume (Lvmingyuan Environmental Protection Material Factory), cement (Boai Jinyu PO52.5), 30% curing amount Water reducing agent (Subbot), river sand with a particle size of 0.6-1.4mm, 52.5 ordinary Portland cement, yellow river sand with a particle size of 0-0.6mm, particle size of 0.45-1mm and 0.18-0.45mm Quartz sand. The raw material components are shown in Table 1.

[0038]Table 1 Ingredients of raw materials

[0039]

[0040]2. The ratio of raw materials

[0041]In order to make the various performances of UHPC more superior, the stacking framework is more dense. Through the revised A&A model, the particle size distribution curve of the mixed materials is close to the target curve, so as to realize the compact structure of UHPC, which is the key factor for the ultra-high performance of concrete. When the la...

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PUM

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Abstract

The invention discloses Yellow River sand ultra-high-performance concrete and a preparation method thereof. The Yellow River sand ultra-high-performance concrete is prepared from, by mass, 700-750 parts of cement, 150-200 parts of silica fume, 150-200 parts of fly ash, 40-220 parts of river sand, 150-800 parts of Yellow River sand, 190-1100 parts of quartz sand, 20-40 parts of water reducing agentand 180-200 parts of water. According to the method, the Yellow River sand is adopted to replace quartz sand to prepare the Yellow River sand ultra-high-performance concrete, so that land resources are protected, the dredging treatment problem of the Yellow River channel is solved, the Yellow River sand is fully developed and utilized, the influence on ecology is reduced, and meanwhile, a part ofeconomic benefits are considered.

Description

Technical field[0001]The invention belongs to the technical field of building materials, and specifically relates to a yellow river sand ultra-high performance concrete and a preparation method thereof.Background technique[0002]At present, the sedimentation of the Yellow River silt not only reduces the storage capacity of important water conservancy projects, but also reduces the service life of water conservancy projects. Therefore, appropriate methods for resource utilization of the Yellow River silt will help reduce the Yellow River bed, ensure the safety of flood discharge, and restore the storage capacity of water conservancy projects such as Xiaolangdi, which will have significant social, ecological and environmental benefits.[0003]Ultra-high performance concrete (UHPC) has high strength and durability. It is the leading trend of concrete development and is widely used, such as strengthening the strength of reinforced concrete (RC) structure; in railway sleepers, it is used to...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/06
CPCC04B28/04C04B14/068C04B2111/00017C04B18/146C04B18/08C04B14/06C04B22/002C04B2103/302
Inventor 吕亚军张雷谢珂秦一鸣杨龙宾席壮民刘明月
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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