Cement-based shrinkage-free grouting mortar

A non-shrinkage, cement-based technology, applied in the field of building materials, can solve the problems of high cement cost, unsuitable promotion, insufficient expansion performance, etc., and achieve the effects of good self-flow, low price and stable performance.

Inactive Publication Date: 2011-11-23
JIANGSU MINGHE GRP
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the high cost of cement and insufficient expansion performance, the prepared grouting mortar can only be used in some key projects and should not be popularized

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-based shrinkage-free grouting mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of cement-based non-shrinkage grouting mortar, by weight percentage, it comprises:

[0028] Cementitious material: PO42.5R cement 38%, CA-50 cement 5%, natural raw gypsum 6%;

[0029] Aggregate: medium coarse yellow sand 48.5%;

[0030] High-efficiency water reducer: naphthalenesulfonate formaldehyde condensate 1%;

[0031] Coagulation regulator: lithium carbonate 0.01%, sodium gluconate 0.05%, tartaric acid 0.04%;

[0032] Silicon defoamer: 0.4% silicone defoamer;

[0033] Anti-bleeding agent: 1% slaked lime powder.

Embodiment 2

[0035] A kind of cement-based non-shrinkage grouting mortar, by weight percentage, it comprises:

[0036] Cementitious material: PO42.5R cement 35%, CA-50 cement 8%, natural raw gypsum 7.4%;

[0037] Aggregate: medium coarse yellow sand 45%;

[0038] High-efficiency water reducer: 1.4% mixture of naphthalenesulfonate formaldehyde condensation product water reducer and sulfamate water reducer;

[0039] Coagulation regulator: lithium carbonate 0.02%, sodium gluconate 0.1%, tartaric acid 0.08%;

[0040] Silicon defoamer: silicone defoamer 1%;

[0041] Anti-bleeding agent: 2% slaked lime powder.

Embodiment 3

[0043] A kind of cement-based non-shrinkage grouting mortar, by weight percentage, it comprises:

[0044] Cementitious material: PO42.5R cement 42%, CA-50 cement 5%, natural raw gypsum 8%;

[0045] Aggregate: medium coarse yellow sand 40%;

[0046] High-efficiency water reducer: sulfamate water reducer mixture 1.2%;

[0047] Coagulation regulator: lithium carbonate 0.02%, sodium gluconate 0.05%, tartaric acid 0.08%;

[0048] Silicon defoamer: silicone defoamer 0.65%;

[0049] Anti-bleeding agent: 3% slaked lime powder.

[0050] The portland cement-aluminate cement-gypsum composite cementitious material used in the cement-based non-shrinkage grouting mortar itself has the properties of early strength, high strength and micro-expansion, and the performance is adjustable. The ratio of raw materials can be adjusted according to different user requirements to meet different requirements. For example, the strength of 1d can be high or low (20MPA~40MPA), the strength of 28d (70M...

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
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a cement-based shrinkage-free grouting mortar which is characterized by comprising the following components in percentage by weight: 35%-42% of silicate cement, 5%-12% of aluminate cement, 6%-10% of gypsum, 40%-50% of aggregate, 0.8%-1.4% of high-efficiency water reducing agent, 0.05%-0.2% of coagulation-regulating agent, 0.4%-1.0% of defoamer and 1%-3% of bleeding resisting agent. The cement-based shrinkage-free grouting mortar is a gelled material which is prepared from the silicate cement, the aluminate cement and the gypsum and has stable performance, and the flow degree, coagulation time and expansion rate of the grouting mortar can be regulated according to the requirement of a user. After mixed with water, the grouting mortar has a good self-flowing property, no sedimentation and no bleeding; the grouting mortar has the characteristics of plastic micro-expansion property, no gap, high early strength, no contracted later strength, good durability, impermeability, freezing resistance and vibration resistance, low material price and wide raw material sources; and the grouting mortar is flexible to operate and is simple to use.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a grouting mortar for foundation engineering. Background technique [0002] Non-shrinkage grouting mortar originated in the United States and is a high-strength and fast-setting material developed for strengthening military facilities. By the 1950s, Western countries applied it to the industrial sector, mainly for mechanical equipment installation and reinforcement repair projects. Foot bolt anchorage, secondary grouting of steel structure column foot plate, concrete structure reconstruction, reinforcement and post-tensioned prestressed concrete structure reserved hole grouting and anchor sealing and other new fields. [0003] With the development of my country's economy and the construction of a large number of infrastructures, many factories and enterprises with large-scale equipment continue to appear. The installation of various large-scale equipment in metallurgical, petro...

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): C04B28/14
CPCC04B28/14C04B2103/302C04B7/02C04B7/32C04B14/06C04B22/064C04B2103/14C04B2103/24C04B2103/50C04B22/10C04B24/06C04B24/42C04B2103/0083C04B24/121C04B24/16C04B24/226
Inventor 刘小兵臧军蔡林虎
Owner JIANGSU MINGHE GRP
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