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

C35 low-gel-material self-compacting water-tolerant concrete and preparation method thereof

A self-compacting and concrete technology, applied in the field of concrete, can solve the problems of affecting the service life of the floor and the fragile surface of the board, and achieve the effects of saving resources, reducing production costs, and improving the package.

Inactive Publication Date: 2015-09-09
CHINA MINSHENG ZHUYOU
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing concrete floors, especially in areas where the kitchen and bathroom are often in contact with water, are often soaked in water, and the surface is more likely to be damaged, which affects the service life of the floor

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
  • C35 low-gel-material self-compacting water-tolerant concrete and preparation method thereof
  • C35 low-gel-material self-compacting water-tolerant concrete and preparation method thereof
  • C35 low-gel-material self-compacting water-tolerant concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1－5

[0025] The raw material that following embodiment adopts is as follows:

[0026] Cement to PO 4 2.5, secondary fly ash, fine river sand with a fineness modulus of 1.9, machine-made sand with a fineness modulus of 3.3, and continuously graded 2-25mm crushed stones; the water reducing agent is polycarboxylic acid high-efficiency water reducing agent; the thickener used is hydroxypropyl methylcellulose; the early strength agent used is anhydrous sodium sulfate.

[0027] On the basis of the above raw materials, the design strength level of the laboratory is C35 self-compacting concrete mix ratio, and the amount of cementitious material is not more than 350kg / m 3 , see the table below for details.

[0028] (1) Specific mixing ratio of Examples 1-5 in Table 1 kg / m 3

[0029]

[0030] (2) Workability test of fresh self-compacting concrete

[0031] According to the "Technical Regulations for the Application of Self-Compacting Concrete", the slump spread, T 50 , U-shaped and V...

Embodiment 6－10

[0040] (1) Table 4 Example 6-10 Specific mix ratio kg / m 3

[0041]

[0042] (2) Workability test of fresh self-compacting concrete

[0043] According to the "Technical Regulations for the Application of Self-Compacting Concrete", the slump spread, T 50 , U-shaped and V-shaped. The results show that the working performance of fresh concrete with all mix ratios meets the standard requirements, see Table 5 for details.

[0044] Table 5 Work performance of fresh concrete

[0045]

[0046] (3) Self-compacting concrete strength test

[0047] According to relevant national standards, the compressive strength of concrete was tested for 1 day, 3 days, 7 days and 28 days, see Table 6 for details

[0048] Table 6 Results of compressive strength of concrete at different ages MPa

[0049] serial number

1 day

3 days

7 days

28 days

Example 6

12.1

17.4

20.8

35.5

Example 7

15.1

17.8

21.2

36.9

Example 8 ...

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
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to concrete, and specifically relates to C35 low-gel-material self-compacting water-tolerant concrete and a preparation method of the water-tolerant concrete. The scheme of the invention is that the C35 low-gel-material self-compacting water-tolerant concrete comprises the following raw materials, by mass: 180-300 kg / m3 of cement, 30-80 kg / m3 of coal ash, 220-640 kg / m3 of fine river sand, 300-600 kg / m3 of machine-made sand, 600-1100 kg / m3 of cobblestone with a diameter of 5-25 mm, 2-10 kg / m3 of a polycarboxylic acid water reducer, 0.01-0.03 kg / m3 of a thickening agent, 4-8 kg / m3 of an early strength agent, and 2-10 kg / m3 of a water-tolerant agent. The C35 low-gel-material self-compacting water-tolerant concrete provided in the invention is less in use amount of materials, has better fluidity, early strength, and water-tolerant property, and plays an important part in accelerating popularization of application of C35 self-compacting concrete.

Description

technical field [0001] The invention relates to concrete, in particular to a C35 low-glue self-compacting water-resistant concrete and a preparation method thereof. Background technique [0002] Self-compacting concrete (Self Compacting Concrete or Self-Consolidating Concrete referred to as SCC) refers to the ability to flow and compact under its own gravity, even if there are dense steel bars, it can completely fill the formwork, while obtaining good homogeneity, and does not require additional vibrating concrete. The amount of self-compacting concrete cementitious material in the prior art is generally 500kg / m 3 Above, the amount of cement is generally 350kg / m 3 Above, and a large number of mineral admixtures (mineral powder, fly ash) with hydration activity are used. Utilize the concrete prepared by this technology, its strength grade is often above C50; Nie Fazhi et al. (patent CN102060481A) have studied a kind of strength grade C50 level, and the amount of cementitio...

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): C04B28/00C04B28/04C04B28/08
Inventor 徐志辉
Owner CHINA MINSHENG ZHUYOU
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