Expansion controllable ultra high-early strength support saddle mortar material

A technology of support mortar and expansion agent, which is applied in the field of expansion-controllable super-early-strength support mortar material and its preparation, can solve the problems of no patent documents, etc., achieve excellent filling performance, improve crack resistance and impermeability Sexuality, the effect of improving work performance

Active Publication Date: 2009-07-22
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there is no expansion-controllable super-early-strength bearing mortar material that can meet the above performance requirements for the anchorage of bridge bearings on passenger dedicated lines, and no related patent documents have been found.

Method used

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  • Expansion controllable ultra high-early strength support saddle mortar material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Rapid hardening sulfoaluminate cement 50%

[0042] Bulking agent 0%

[0043] 20 mesh ~ 40 mesh quartz sand 11%

[0044] 40 mesh ~ 60 mesh quartz sand 15%

[0045] 60 mesh ~ 70 mesh quartz sand 14%

[0046] 70 mesh ~ 100 mesh quartz sand 9%

[0047] Boric acid 0.4%

[0048] Aluminum sulfate: calcium fluoride = 1:1 0.2%

[0049] Naphthalenesulfonate superplasticizer (powder) 0.35%

[0050] Silicone defoamer 0.04%

[0051] 6mm polypropylene fiber 0.01%

[0052] The dry powder mortar automatic production equipment is adopted to automatically measure the above-mentioned components in proportion, automatically feed materials, automatically stir evenly, and automatically pack to form finished products.

Embodiment 2

[0054] Low Alkali Sulphoaluminate Cement 49%

[0055] Alum stone expander 2%

[0056] 20 mesh ~ 40 mesh quartz sand 10%

[0057] 40 mesh ~ 60 mesh quartz sand 16%

[0058] 60 mesh ~ 70 mesh quartz sand 14%

[0059] 70 mesh ~ 100 mesh quartz sand 8%

[0060] Citric acid 0.4%

[0061] Calcium formate 0.35%

[0062] Polycarboxylate superplasticizer (powder) 0.2%

[0063] Silicone defoamer 0.03%

[0064] 3mm polypropylene fiber 0.02%

[0065] The dry powder mortar automatic production equipment is adopted to automatically measure the above-mentioned components in proportion, automatically feed materials, automatically stir evenly, and automatically pack to form finished products.

Embodiment 3

[0067] Rapid hardening sulfoaluminate cement 46%

[0068] UEA expander 4%

[0069] 20 mesh ~ 40 mesh quartz sand 10%

[0070] 40 mesh ~ 60 mesh quartz sand 15%

[0071] 60 mesh ~ 70 mesh quartz sand 14%

[0072] 70 mesh ~ 100 mesh quartz sand 9%

[0073] Borax 0.3%

[0074] Calcium Fluoride 0.25%

[0075] Naphthalenesulfonate superplasticizer (powder) 0.4%

[0076] Silicone defoamer 0.04%

[0077] 9mm polypropylene fiber 0.01%

[0078] The dry powder mortar automatic production equipment is adopted to automatically measure the above-mentioned components in proportion, automatically feed materials, automatically stir evenly, and automatically pack to form finished products.

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Abstract

The invention relates to an expansion-controllable super early strength saddle sand pulp material which is prepared by the components with the weight percentage as follows: 36 to 50 percent of quick hardening cement, 0 to 10 percent of expansion admixture, 42 to 54 percent of quartz sand of 20 meshes to 100 meshes, 0.15 to 0.9 percent of retarder, 0.1 to 0.8 percent of early strength admixture, 0.3 to 0.6 percent of water reducing agent, 0.06 to 0.26 percent of foam killer, as well as 0.01 to 0.08 percent of fiber. The invention has the advantages of good liquidity, high early strength, good expansion filling performance, no reversed shrinking of later strength, convenient use and the like, is suitable for the construction under various environment conditions (including low and subzero temperature as well as high temperature conditions), can be used for quickly repairing the foundation grouting, concrete structures and pavements of various devices, and is suitable for the gravity grouting of the prefabricated bridge basin-type rubber saddle of a passenger dedicated line in particular.

Description

technical field [0001] The present invention relates to an expansion-controllable super-early-strength bearing mortar material and a preparation method thereof, in particular to an expansion-type super-early-strength mortar material for the installation of high-speed railway bridge basin-type rubber bearings and cylindrical steel bearings. Strong bearing mortar, with improved formula, can be used for large-scale equipment installation and repair and road surface repair. Background technique [0002] At present, China's economic construction is developing rapidly at an unprecedented high speed, and infrastructure construction is developing in a magnificent manner. Therefore, higher requirements are put forward for improving the service life of infrastructure projects, especially high-speed railways and railway passenger dedicated lines. In the bridge construction design of railway passenger dedicated line, in order to improve its service life, the traditional box girder erect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/06
CPCC04B28/02
Inventor 缪昌文周华新刘加平洪锦祥万贇
Owner JIANGSU SOBUTE NEW MATERIALS
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