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

Cement early strength agent composition and preparation method thereof

A technology of early strength agent and composition, applied in the field of cement early strength agent, can solve the problems such as difficulty in controlling the dosage of triethanolamine type early strength agent, reduction of concrete impermeability and corrosion resistance, reduction of concrete workability and durability, etc. , to reduce maintenance energy consumption, speed up mold turnover, and improve ultra-early strength.

Inactive Publication Date: 2020-04-10
SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inorganic and organic-based early strength agents have been widely used for many years, but there are many disadvantages, which often lead to the reduction of concrete workability and durability. Retarding or rapid setting; Chlorine-containing early-strength agents are easy to cause corrosion of steel bars; Sulfate-based early-strength agents increase the content of large pores in cement stones, resulting in reduced impermeability and corrosion resistance of concrete

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
  • Cement early strength agent composition and preparation method thereof
  • Cement early strength agent composition and preparation method thereof
  • Cement early strength agent composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 38.25g of calcium chloride and 50.15g of water to configure calcium chloride aqueous solution, weigh 43.74g of potassium silicate and 44.26g of water to configure potassium silicate solution, weigh 23.80g of dispersant and 158.2g of water to configure composite dispersant aqueous solution. The composite dispersant solution was introduced into a three-necked flask, the temperature was set at 15°C, and the dispersant solution was stirred evenly. Under the condition of keeping stirring, the calcium chloride aqueous solution and the potassium silicate aqueous solution are added dropwise at the same time, and the dropping rate is adjusted so that the dropping time is controlled at about 1 hour. Continue stirring for 1 h after the dropwise addition, and then slowly cool down to room temperature to obtain the early strengthening agent HA-1.

Embodiment 2

[0036] Weigh 54.85g of calcium nitrate and 55.29g of water to configure calcium nitrate aqueous solution, weigh 53.74g of water glass and 44.26g of water to configure water glass solution, weigh 22.72g of dispersant and 141.5g of water to configure composite dispersant aqueous solution. The composite dispersant solution was introduced into a three-necked flask, the temperature was set at 15°C, and the dispersant solution was stirred evenly. Under the condition of keeping stirring, the calcium chloride aqueous solution and the potassium silicate aqueous solution are added dropwise at the same time, and the dropping rate is adjusted so that the dropping time is controlled at about 2 hours. Continue to stir for 4 hours after the dropwise addition, and then slowly cool down to room temperature to obtain the early strengthening agent HA-2.

Embodiment 3

[0038] Weigh 44.85g of calcium formate and 53.57g of water to configure calcium formate aqueous solution, weigh 48.36g of potassium metasilicate and 43.78g of water to configure potassium metasilicate solution, weigh 24.18g of dispersant and 133.5g of water to configure composite dispersant aqueous solution. The composite dispersant solution was introduced into a three-necked flask, the temperature was set at 15°C, and the dispersant solution was stirred evenly. Under the condition of keeping stirring, the calcium chloride aqueous solution and the potassium silicate aqueous solution are added dropwise at the same time, and the dropping rate is adjusted so that the dropping time is controlled at about 7 hours. Continue to stir for 3 hours after the dropwise addition, and then slowly cool down to room temperature to obtain the early strengthening agent HA-3.

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 intention discloses a cement early strength agent composition and a preparation method thereof. The cement early strength agent composition is prepared by reacting a water-soluble calcium salt solution, a water-soluble iron salt solution, a water-soluble aluminum salt solution and a water-soluble silicate solution in a polycarboxylic acid polymer dispersant solution. The cement early strengthagent composition is widely applied to cement-based products such as pipe pieces, pipe piles, PC components and special mortar which have special requirements for early strength, the development speedof the early strength can be greatly increased, mold turnover is accelerated, the productivity is improved, meanwhile, the maintenance energy consumption can be reduced, and the cost is saved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to an organic / inorganic hybrid calcium silicate hydrate suspension and a preparation method thereof, in particular to a cement early strength agent. Background technique [0002] Increasing the strength growth rate in the production process of prefabricated components can speed up mold turnover and improve production efficiency. Component factories usually use high-temperature autoclaved curing and adding early strength agents to increase mold turnover speed. High-temperature autoclaved curing consumes a lot of energy, which is not conducive to energy saving and emission reduction. Screening suitable accelerators has become the preferred technical approach to improve the production efficiency of prefabricated components and reduce energy consumption. [0003] Inorganic and organic-based early strength agents have been widely used for many years, but there are many disadva...

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): C04B24/26C04B103/14
CPCC04B24/405C04B2103/14
Inventor 王伟山冯中军傅乐峰郑柏存
Owner SHANGHAI SUNRISE POLYMER MATERIAL 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