Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A composite compacting agent

A compacting agent and composite technology, applied in the field of building materials, can solve the problems of less corrosion-resistant cement manufacturers, large fluctuations in material quality, and unstable air tightness. It is of great significance to protect the environment and improve crack resistance and seepage prevention. Effects of performance, guaranteed function and durability

Active Publication Date: 2021-11-30
CHINA RAILWAY ERYUAN ENG GRP CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome in the prior art, concrete enhancement corrosion resistance mainly depends on adopting the corrosion-resistant cement of sulfate, chloride salt, egg corrosion-resistant cement manufacturer is few, and supply is insufficient; Meanwhile, concrete airtightness mainly depends on Relying on material measures such as mixing silica fume, fly ash and high-efficiency water reducer, there are problems such as large fluctuations in material quality, complicated metering, and unstable air tightness. For this, this invention provides a new type of composite compacting agent

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
  • A composite compacting agent
  • A composite compacting agent
  • A composite compacting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Composite compacting agent

[0040] Weigh the raw material components as follows: silica fume (specific surface area greater than 16000m 2 / kg) 300g, double expansion source clinker (specific surface area is 300m 2 / kg) 250g, anhydrite (specific surface area is 400m 2 / kg) 200g, ethylene vinyl acetate copolymer 100g, zeolite powder (specific surface area is 500m 2 / kg) 150g. Mix and stir the various raw materials obtained by weighing to prepare a compacting agent.

[0041] Preparation of concrete test blocks

[0042] Weigh 9.2kg of cement, 10.2kg of sand, 25.0kg of gravel, and 6.2kg of water. First put water, mud and sand into the mixer, stir and mix evenly; add stones, stir evenly, add water and stir for 30-50 seconds, pour into the mold to make, standard curing, make standard test block B, as a standard concrete test block reference sample .

[0043] Weigh 200 g of the compacting agent prepared above, 9.2 kg of cement, 10.2 kg of sand, 25.0 kg of stones, and 6....

Embodiment 2

[0045] A compound compacting agent, the raw material composition is as follows: ground water-quenched blast furnace slag powder (specific surface area is 600m 2 / kg) 350g, double expansion source clinker (specific surface area is 250m 2 / kg) 350g, gypsum (specific surface area is 400m 2 / kg) 150g, vinyl acetate / tertiary carbonic acid ethylene copolymer 50g, diatomite (specific surface area is 600m 2 / kg) 100g.

[0046] Concrete standard test block A2 was prepared in the same manner as in Example 1.

Embodiment 3

[0048] For the compound compacting agent, weigh each raw material component according to the values ​​in the table below, mix and stir the obtained raw materials evenly, and prepare the compacting agent product.

[0049] Table 1 The mixing ratio of various raw material components in the compacting agent (unit gram)

[0050]

[0051] Among them, the corrosion-resistant component is ultra-fine slag powder, with a specific surface area of ​​500m 2 / kg, the specific surface area of ​​the double expansion source clinker is 240 m 2 / kg: gypsum is dihydrate gypsum, specific surface area is 450m 2 / kg: Polymer airtight modifier is vinyl acetate / tertiary carbonic acid ethylene copolymer; ion curing agent is zeolite powder, specific surface area is 700m 2 / kg.

[0052] Concrete standard test blocks A31, A32, A33, A34, and A35 were prepared in the same manner as in Example 1 by using the above compacting agents M31-M35.

[0053]

[0054] The concrete standard test block and the ...

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
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite compacting agent, which comprises the following components in weight percentage: corrosion-resistant component: 30.0-40.0%; double expansion source clinker: 25.0-35.0%; gypsum: 15.0-20.0%; polymer modification Agent 5.0‑10.0%; ion curing agent: 5‑15.0%. The composite compacting agent of the invention can well improve the sulfate and seawater corrosion resistance of concrete, solidify the harmful ions of sulfate ions and chloride ions in the concrete, and improve the project life in severe environments. Therefore, the composite compacting agent of the present invention is a composite compacting agent product suitable for corrosion resistance and high airtightness of concrete in complex environments.

Description

technical field [0001] The invention relates to a compacting agent, in particular to a composite compacting agent, in particular to a composite compacting agent suitable for corrosion resistance and air tightness of concrete in complex environments, and belongs to the technical field of building materials. Background technique [0002] my country is in the midst of large-scale construction, and concrete materials and structures are used in a large number of bridges, tunnels, water conservancy and hydropower, nuclear power, marine, civil construction and other projects. Among them, many projects under construction and to be constructed are in complex environments, including Hong Kong-Zhuhai-Macao Bridge, Bohai Bay Tunnel, South China Sea Island Reef Airport, Qinghai-Tibet Railway, Lanzhou-Xinjiang High-speed Railway, etc. Concrete structures will face serious durability problems in these complex environments. For example, during the construction and use of high-speed railway ...

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 Patents(China)
IPC IPC(8): C04B24/26C04B103/61
CPCC04B40/0039C04B18/146C04B22/143C04B22/064C04B24/2623C04B14/047C04B18/142C04B14/08
Inventor 王磊朱麟晨李现宾陶伟明周志刚吕东明廖余陈朗康芮何聪舒东利廖雄朱宏海
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com