Polycarboxylate water reducer composite material and use method thereof, and concrete

A technology of water reducing agent and polycarboxylic acid, which is applied in the field of water reducing agent, can solve the problems of poor early strength performance and achieve the effect of improving early strength performance and maintaining water reducing function

Active Publication Date: 2021-06-25
连云港石化有限公司
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, COO in polycarboxylate superplasticizer 2- and Ca in cement paste 2+ Ions will also form complexes, reduce the concentration of calcium ions in the cement paste, and delay the Ca(OH) 2 Crystallization is formed, which delays the hydration process of cement and makes the early strength performance worse

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
  • Polycarboxylate water reducer composite material and use method thereof, and concrete
  • Polycarboxylate water reducer composite material and use method thereof, and concrete
  • Polycarboxylate water reducer composite material and use method thereof, and concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Weigh 250g of MPEG-type polycarboxylate high-performance water reducer, prepare the water reducer as an aqueous solution (concentration: 75wt%), then add 5g of magnesium tourmaline powder to the solution to obtain the mixed material a, and then mix the material Mix with 425 portland cement, sand, stones and water (mass ratio 350:792:1008:200) to obtain concrete, wherein the mass ratio of material a to the solid phase in the concrete is 0.3wt%.

Embodiment 2

[0063] Weigh 250g of MPEG-type polycarboxylate high-performance water-reducer, prepare the water-reducer as an aqueous solution (concentration is 75wt%), then add calcium magnesium tourmaline powder 8g to the solution to obtain the mixed material a, and then add the The material is mixed with 425 Portland cement, sand, stones and water (mass ratio is 350:792:1008:200) to obtain concrete, wherein the mass ratio of material a to the solid phase in the concrete is 0.25wt%.

Embodiment 3

[0065] Weigh 250g of MPEG-type polycarboxylate high-performance water reducer, prepare the water reducer as an aqueous solution (concentration is 75wt%), then add 5g of trivinylphosphine to the solution to obtain the mixed material a, and then add the The material is mixed with 425 Portland cement, sand, stones and water (mass ratio is 350:792:1008:200) to obtain concrete, wherein the mass ratio of material a to the solid phase in the concrete is 0.3wt%.

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 discloses a polycarboxylate water reducer composite material. The composite material comprises a polycarboxylate water reducer and an activating agent. The activating agent comprises tourmaline powder. The piezoelectric effect and the thermoelectric effect of the tourmaline powder cause the generation of polarization charges, and the generation of polarization charges can reduce the combination of carboxyl end groups of the polycarboxylate water reducer and calcium ions in cement to a certain extent and promote Ca(OH)2 to form crystals, so that the early strength performance is improved.

Description

technical field [0001] The present application relates to a polycarboxylate water reducer composite material, a use method, and concrete, and belongs to the technical field of water reducers. Background technique [0002] Water reducers are often added to concrete. Polycarboxylate superplasticizer is a kind of superplasticizer with good comprehensive performance, which has high water reducing rate and good slump retention [0003] The powder polycarboxylate superplasticizers currently on the market are generally obtained by spray drying. The mother liquor of the superplasticizer is formed into mist droplets through an atomizer and enters the drying room to exchange heat with the indoor hot air to evaporate water. After drying, it settles to obtain a powder. [0004] Polycarboxylate superplasticizer is adsorbed on the surface of cement particles, which makes the surface of cement particles negatively charged to form electrostatic repulsion, promotes the mutual dispersion of...

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): C04B24/26C04B103/30
CPCC04B40/0039C04B2103/302C04B24/2641C04B24/003C04B14/04
Inventor 马清浩
Owner 连云港石化有限公司
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