Reactive powder concrete for reinforcing buildings as well as preparation method and construction method thereof

A technology of active powder and concrete, which is applied in the field of active powder concrete for building reinforcement and its preparation and construction. It can solve the problems of difficult reinforcement materials, high cost, and easy to fall off when used, and achieve good adhesion, strong plasticity, increase the overall effect

Active Publication Date: 2013-09-04
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD +1
View PDF6 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides an active powder concrete for building reinforcement and its preparation and construction method. It is necessary to solve the technical problems of high cos

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
  • Reactive powder concrete for reinforcing buildings as well as preparation method and construction method thereof
  • Reactive powder concrete for reinforcing buildings as well as preparation method and construction method thereof
  • Reactive powder concrete for reinforcing buildings as well as preparation method and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] In order to better understand the present invention, the content of the present invention will be further clarified below in conjunction with the embodiments, but the content of the present invention is not limited to the following embodiments.

[0040] In Examples 1 to 3, this kind of reactive powder concrete for building reinforcement, the proportions of raw materials in parts by weight are shown in Table 1.

[0041] Table 1 The proportion of raw materials in parts by weight

[0042] Numbering water cement Fly ash beads Silica Fume River sand Quartz sand Steel fiber Chemical additives Powder / fine aggregate Example 1156522.812.27030171.8 1:1 Example 215702196535171.8 1:1 Example 3 15702196040171.8 1:1

[0043] among them:

[0044] The cement is ordinary Portland cement with a strength grade of 42.5;

[0045] The fly ash beads are white or light gray fly ash beads, the loss on ignition is less than 1%, and the specific surface area is ≥10000cm 2 / g;

[0046] Silica fume is ...

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
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a reactive powder concrete for reinforcing buildings as well as a preparation method and the construction method thereof. The reactive powder concrete comprises the following raw material constituents in parts by weight: 50 to 80 parts of cement, 15 to 40 parts of fly ash microsphere, 5 to 13 parts of silica fume, 35 to 80 parts of river sand, 20 to 65 parts of quartz sand, 10 to 20 parts of water, 10 to 30 parts of steel fibre and 1 to 2 parts of chemical additive. The reactive powder concrete has the advantages of good fluidity, strong plasticity, good cohesive property with an existing structure, similar linear expansion coefficient with an existing concrete structure, high strength, wide raw material source, reliable technology, durable service, low in cost and simple construction technology. In addition, the RPC material poured at later stage and the existing structure are closely integrated as a whole, resulting from contraction performance of the reactive powder concrete during the process of hardening, and the integrity of the structure is enhanced; all that is needed is to carry out conventional maintenance on the reactive powder concrete after forming, the prospective reinforcement effect can be achieved, and curing condition is the same as that of the normal premixed concrete.

Description

Technical field [0001] The invention relates to a preparation and construction method of active powder concrete for building reinforcement. Background technique [0002] As a structural system with the fastest technological development and the most widely used in the construction field of the 20th century, concrete building structure needs to be reinforced and repaired during its life cycle due to various reasons to maintain the safety of the structure and the normal performance of its functions. In developed countries in Europe and America, the current investment in building reinforcement and renovation has accounted for more than 1 / 2 of the country's total investment in the construction industry. The U.S. Department of Labor once predicted in an industry forecast report at the end of the 20th century: the building maintenance and reinforcement industry will be one of the hottest industries in the 21st century. [0003] Since the founding of the People’s Republic of my country, ...

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): C04B28/04
Inventor 张琨王辉孙克平刘志茂刘永道
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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