Ultrahigh-strength self-compacting concrete and preparation method thereof

A dense concrete, ultra-high technology, applied in the field of inorganic non-metallic materials, can solve the problem of difficult to achieve ultra-high strength and high fluidity of concrete at the same time, and achieve the effects of excellent flow performance, reduced slurry dosage, and reduced porosity.

Inactive Publication Date: 2013-09-18
SHENZHEN UNIV
View PDF7 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the difficulty in realizing the ultra-high strength and high fluidity of concrete at the same time in the existing concrete technology, and provide a design and preparation method of an ultra-high performance self-compacting concrete material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrahigh-strength self-compacting concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to better understand the present invention, the content of the present invention will be further clarified below in combination with tables and specific implementation examples, but the content of the present invention is not limited to the following examples.

[0027] Concrete of the present invention is mainly composed of cementitious material, water reducing agent, fine aggregate, coarse aggregate and fiber; said cementitious material is composed of ordinary Portland cement, slag, silica fume, and in every 1m of concrete, water 150kg, 700kg of fine aggregate, 900kg of coarse aggregate, 650kg of cementitious material, 1kg of fiber, and the amount of water reducer is 1.5% of the cement amount.

[0028] At the same time, the ordinary Portland cement is 52.5R cement; the silica fume adopts a density of 2400kg / m 3 , the specific surface area is 15000m 2 / kg of silicon powder; the superplasticizer is polycarboxylate high-efficiency superplasticizer; the fine aggr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
specific surface areaaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses an ultrahigh-strength self-compacting concrete and a preparation method thereof. The ultrahigh strength self-compacting concrete is mainly composed of a cementing material, an efficient water reducer, a fine aggregate, a coarse aggregate, water and PVA (Polyvinyl Alcohol) fibers, wherein the cementing material is composed of 70%-80% of common silicate cement, 10%-20% of mineral slag and 5%-10% of silicon powder by weight percentage; the fine aggregate is medium sand; the coarse aggregate is granite macadam. The ultrahigh-strength self-compacting concrete has the beneficial effects that the advanced techniques of the ultrahigh-strength concrete and the self-compacting concrete in the field of the concrete materials at present are studied, the advantages of the two concrete techniques are combined so that the dosage of the cement is reduced while ultrahigh performance of the concrete is realized, and furthermore, the purposes of emission reduction of CO2, materials saving and environmental protection as well as green construction are achieved.

Description

【Technical field】 [0001] The invention relates to the field of inorganic non-metallic materials, in particular to ultrahigh-strength self-compacting concrete and a preparation method thereof. 【Background technique】 [0002] With the development trend of high-rise, long-span, lightweight, underground and harsh environment of modern buildings, the requirements for the strength and durability of concrete used in modern construction projects are also getting higher and higher. Under this engineering background, high-strength and ultra-high-strength concrete stand out for their excellent performance. Generally speaking, ultra-high-strength concrete refers to concrete with a cubic compressive strength greater than 100 MPa. The advantages of using high-strength and ultra-high-strength concrete in the beam and column components of buildings are very obvious. Under the same conditions, the higher the strength of concrete, the size and volume of its components will be relatively red...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08
Inventor 龙武剑刑锋罗启灵王卫仑李满棠
Owner SHENZHEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap