Unlock instant, AI-driven research and patent intelligence for your innovation.

Sleeve grouting material for steel bar connection

A sleeve grouting and steel bar technology, applied in the field of building materials, can solve problems such as insufficient strength and easy cracking, and achieve the effects of increasing strength, avoiding cracking, and reducing friction between particles

Active Publication Date: 2019-05-03
苏州市姑苏新型建材有限公司
View PDF8 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a sleeve grouting material for steel bar connection with fast setting time, high early strength and good construction performance, which solves the problem that the existing sleeve grouting material is not strong enough and easy to crack technical issues

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
  • Sleeve grouting material for steel bar connection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A sleeve grouting material for steel bar connection, which is composed of the following raw materials in parts by weight: 35 parts of cement, 50 parts of sand, 20 parts of anhydrite, 20 parts of active microbead powder, 3 parts of polycarboxylate water reducer, defoaming 0.4 parts of agent, 0.5 parts of retarder, 2 parts of cement composite stabilizer, 1.2 parts of plasticizing expansion agent, 0.8 parts of early strength agent, 1.6 parts of water-retaining thickener, and 0.4 parts of cement hydration accelerator.

[0025] The cement composite stabilizer consists of sodium allyl sulfonate and calcium stearate.

[0026] The water-retaining thickener consists of sodium bentonite and hydroxypropyl methylcellulose ether.

[0027] The water reducing rate of the polycarboxylate water reducer is ≥ 30%.

[0028] The cement hydration accelerator consists of acrylate.

Embodiment 2

[0030] A sleeve grouting material for steel bar connection, which is composed of the following raw materials in parts by weight: 35 parts of cement, 50 parts of sand, 20 parts of anhydrite, 15 parts of active microbead powder, 2 parts of polycarboxylate water reducer, defoaming 0.4 parts of agent, 0.5 parts of retarder, 2 parts of cement composite stabilizer, 1.2 parts of plasticizing expansion agent, 0.8 parts of early strength agent, 1.2 parts of water-retaining thickener, and 0.4 parts of cement hydration accelerator.

[0031] The cement composite stabilizer consists of sodium allyl sulfonate and calcium stearate.

[0032] The water-retaining thickener consists of sodium bentonite and hydroxypropyl methylcellulose ether.

[0033] The water reducing rate of the polycarboxylate water reducer is ≥ 30%.

[0034] The cement hydration accelerator consists of acrylate.

Embodiment 3

[0036] A sleeve grouting material for steel bar connection, which is composed of the following raw materials in parts by weight: 35 parts of cement, 50 parts of sand, 20 parts of anhydrite, 20 parts of active microbead powder, 2.5 parts of polycarboxylate water reducer, defoaming 0.4 parts of agent, 0.5 parts of retarder, 2 parts of cement composite stabilizer, 1.2 parts of plasticizing expansion agent, 0.8 parts of early strength agent, 1.4 parts of water-retaining thickener, and 0.4 parts of cement hydration accelerator.

[0037] The cement composite stabilizer consists of sodium allyl sulfonate and calcium stearate.

[0038] The water-retaining thickener consists of sodium bentonite and hydroxypropyl methylcellulose ether.

[0039] The water reducing rate of the polycarboxylate water reducer is ≥ 30%.

[0040] The cement hydration accelerator consists of acrylate.

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 sleeve grouting material for steel bar connection. The sleeve grouting material comprises the following components in parts by weight: 30-35 parts of cement, 40-50 parts of sand, 10-20 parts of anhydrite, 15-20 parts of active microsphere powder, 1-3 parts of a polycarboxylate water reducer, 0.2-0.4 part of a defoaming agent, 0.3-0.5 part of a retarder, 1-2 parts of a cement composite stabilizer, 0.8-1.2 parts of a plasticizing expanding agent, 0.6-0.8 part of an early strength agent, 1.2-1.6 parts of a water-retaining thickener and 0.2-0.4 part of a cement hydrationpromoter. The grouting material disclosed by the invention has good strength and flowing property, has good material stability, does not crack or and shrink, and meets the requirements of prefabricated buildings.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a sleeve grouting material for steel bar connection. Background technique [0002] At present, with the rapid development of my country's economy and the transformation of industrial structure, prefabricated structures are one of the building structure forms that my country is currently focusing on developing. In prefabricated buildings, the component connection technology generally adopts the steel sleeve connection technology. Among them, sleeve grouting is the main product, with a market share of 80%. As an important connecting medium between steel bars and sleeves, the performance of grouting materials directly affects the performance of fabricated components. The main problem of traditional grouting materials is that the setting speed is slow, the later hardening will shrink, and the construction progress and quality are affected. Among the existing grouting mat...

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): C04B28/00C04B111/70
Inventor 陈岩陈晓龙赵春林
Owner 苏州市姑苏新型建材有限公司