Full-particle size ultrahigh-performance concrete composition

A concrete composition, ultra-high-performance technology, applied in the field of concrete composition, full-size ultra-high-performance concrete composition, can solve the problem of large shrinkage and deformation of cementitious materials, low water-binder ratio of high-performance concrete, and poor rheology And other problems, to achieve the effect of controllable rheological properties, good working performance and low price

Active Publication Date: 2014-04-30
JIANGSU SOBUTE NEW MATERIALS
View PDF3 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims at the problems existing in the prior art, such as low water-binder ratio of high-performance concrete, poor rheology in the pre

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
  • Full-particle size ultrahigh-performance concrete composition
  • Full-particle size ultrahigh-performance concrete composition
  • Full-particle size ultrahigh-performance concrete composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1 is the benchmark concrete, without adding other components such as admixtures and expansion agents, using pure cement as the cementitious material, sand using river sand, crushed stone using basalt, and superplasticizer using powder polycarboxylate reducing agent. Aqua with no added fiber. After the above materials are mixed, they are packaged, and the above-mentioned ratio of water is directly added to the site for mixing to obtain full-size ultra-high performance concrete.

Embodiment 2

[0050] In Example 2, the admixture is composed of superfine fly ash and silica fume in a ratio of 7:3, river sand is used for sand, basalt is used for crushed stone, and powdered polycarboxylate water reducer is used as superplasticizer. After the above materials are mixed, they are packaged, and the above-mentioned ratio of water is directly added to the site for mixing to obtain full-size ultra-high performance concrete.

Embodiment 3

[0051]In Example 3, the admixture is composed of ultrafine mineral powder and silica fume in a ratio of 8:2, the expansion agent is calcium oxide, the sand is river sand, the crushed stone is diabase, and the superplasticizer is powder polycarboxylate. Acid water reducing agent, polyvinyl alcohol fiber is used for synthetic fiber. After the above materials are mixed, they are packaged, and the above-mentioned ratio of water is directly added to the site for mixing to obtain full-size ultra-high performance concrete.

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
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a full-particle size ultrahigh-performance concrete composition which is prepared from the following components: 100 parts of cement, 10-80 parts of admixture, 5-20 parts of expanding agent, 1-20 parts of viscosity regulator, 120-210 parts of sand, 80-140 parts of rubble and 5-10 parts of super plasticizer while certain volume dosage of fiber is added. The full-particle size ultrahigh-performance concrete composition disclosed by the invention has controllable rheological property and shrinkage strain property and ultrahigh mechanical property and durability. Water is directly added on the site according to a proportion, and the full-particle size ultrahigh-performance concrete can be obtained through forced stirring.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a concrete composition, in particular to a full particle size ultra-high performance concrete composition. Background technique [0002] With the continuous expansion of the scale of civil engineering and the continuous improvement of the level of science and technology, some important buildings with high-rise large-span and special functional requirements continue to appear, such as skyscrapers, super-long-span bridges, etc., requiring concrete to have higher strength and better durability. These requirements have led to the development of cement-based composite materials in the direction of high and ultra-high performance. Domestic and foreign scholars' research on ultra-high performance concrete mainly focuses on reactive powder concrete, or RPC for short. It improves the compactness by refining the particle size and achieves the purpose of improving the mechanical p...

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
IPC IPC(8): C04B28/04C04B14/08C04B18/12C04B18/30C04B14/02
CPCY02W30/91
Inventor 崔巩刘加平刘建忠张倩倩周华新
Owner JIANGSU SOBUTE NEW MATERIALS
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