Concrete doped with dolomitic rock powder, and preparation method thereof

A rock powder and concrete technology, which is applied in the field of concrete mixed with dolomite powder and its preparation, can solve the problem that the flow properties and later mechanical properties of concrete mixture are low, mine waste cannot be effectively utilized, and the use of dolomite powder is restricted. and other problems, to achieve the effect of high impact strength, small wear and low crack resistance

Active Publication Date: 2021-05-04
BEIJING GAOQIANG CONCRETE
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dolomite powder often encounters the following difficulties in the practical application of concrete preparation: dolomite powder is mixed into concrete alone, which is prone to bleeding on the surface of the concrete, and the fluidity and later mechanical properties of the prepared concrete mixture are lower than those of the mixed

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
  • Concrete doped with dolomitic rock powder, and preparation method thereof
  • Concrete doped with dolomitic rock powder, and preparation method thereof
  • Concrete doped with dolomitic rock powder, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0047] The preparation method of modified polypropylene fiber is:

[0048] (1) Disperse 30%wt nano-titanium nitride in ethylene glycol, mix terephthalic acid and antimony trioxide uniformly and add to the polymerization kettle, the quality of ethylene glycol, terephthalic acid, antimony trioxide The ratio is 1:2.75:0.02. After the polymerization tank is sealed, pressurize to 0.25MPa, heat up to 250°C, stir at 100r / min, and perform esterification for 1.5h to obtain an intermediate product;

[0049] (2) Perform polycondensation treatment on the intermediate product, increase the vacuum degree to 20MPa, control the temperature at 270°C, adjust the stirring speed to 240r / min, and react for 1.5h to obtain a nano-titanium nitride / PET polycondensate;

[0050] (3) The pressure is adjusted back to normal pressure, the temperature is adjusted to 50°C, the stirring speed is adjusted to 130r / min, and the polypropylene resin accounting for 35% of the total amount of nano-titanium nitride / P...

Embodiment 1

[0053] A kind of concrete mixed with dolomite powder is prepared by the following method:

[0054] Step 1: Take 700kg of medium sand, 900kg of gravel and 100kg of water and mix them according to the set ratio, add them to the mixer and stir evenly to form a premix;

[0055] Step 2: Immediately add 150kg of cement, 30kg of fly ash, 90kg of granulated blast furnace slag powder, 30kg of dolomite powder, 5kg of polycarboxylate superplasticizer and the remaining 50kg of water to the premix in the mixer and continue stirring to form a mixture evenly.

[0056] Step 3: After the mixture is evenly stirred, the concrete mixture mixed with dolomite powder is prepared.

[0057] Compared with Example 1, the remaining examples differ in that the raw materials and the amount of raw materials added are different, as shown in Table 1 and Table 2.

[0058] Components and component additions of table 1 embodiment 1-10

[0059]

[0060] Components and component additions of table 2 embodimen...

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

No PUM Login to view more

Abstract

The invention relates to the technical field of energy-saving and environment-friendly building materials, and particularly discloses a concrete doped with dolomitic rock powder, and a preparation method thereof. The concrete is prepared from, by weight, 150-170 parts of cement, 150-170 parts of water, 30-50 parts of fly ash, 60-90 parts of granulated blast furnace slag powder, 30-50 parts of dolomite powder, 700-900 parts of medium sand, 900-1061 parts of broken stone, and 5-10 parts of a polycarboxylic acid water reducer. The concrete prepared by the invention has excellent mixture performance, mechanical property and durability.

Description

technical field [0001] The application relates to the technical field of energy-saving and environment-friendly building materials, more specifically, it relates to a concrete mixed with dolomite powder and a preparation method thereof. Background technique [0002] Dolomite powder is the high purity of 0.045mm sieve out of 0.045mm sieved residue within 45% in the process of crushing dolomite sandstone aggregate. Dolomite powder is a mine waste and also a good inert auxiliary cementitious material. [0003] Commonly used mineral admixtures such as fly ash and finely ground slag powder, as important cementitious materials in concrete, have been widely used in concrete structures and become indispensable raw materials, forming a huge market demand. With the adjustment of my country's energy structure, the proportion of coal used for thermal power generation and heating is decreasing day by day, and new energy sources such as nuclear power, hydropower, wind energy, and solar e...

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): C04B28/04C04B14/28C04B16/06C04B18/08C04B18/14
CPCC04B28/04C04B14/28C04B18/142C04B18/08C04B16/0633C04B2201/50C04B14/06C04B18/12C04B2103/302Y02W30/91
Inventor 田景松刘炳尧王雷李冬庞永龙白启帆张子翕张硕李彦昌文俊强
Owner BEIJING GAOQIANG CONCRETE
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