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High-strength cement adhesive

A technology of high-strength cement and adhesive, applied in the field of cement adhesive

Inactive Publication Date: 2014-11-12
张耀辰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are existing patents on adhesives, which improve the strength of adhesives by adding water reducing agents, adjusting the composition of cement, or adding silica fume, fly ash, and slag micro-powdered micro-aggregates, but the composition ratio of multiple components is complicated. Sexuality, resulting in unstable performance of the adhesive and inconvenient operation
Even if a better ratio is found, the maximum compressive strength of the cement so far cannot meet the production needs of high-tonnage suspension porcelain insulators due to the great relationship between the final strength of the cement and the aggregate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0017] Embodiment 1: a high-strength cement adhesive, characterized in that: by weight percentage, it includes: 56.3% cement, 28.2% high-strength artificial sand for cement gel, 1.97% water reducing agent, and 13.53% water.

[0018] Wherein, the cement is portland cement with label not less than 52.5 or 52.5R, and complies with the provisions of GB175-1999, the special high-strength artificial sand particle size of the cement gel is 30-80, the hardness Mohs hardness is 8.5, Al 2 o 3 The content is 85.5%, and the water reducing agent is a naphthalene-based water-reducing agent. The water-reducing agent used in this experiment is a naphthalene-based water-reducing agent with a model of FDN, referring to the standard GB8076-2008.

[0019] The preparation method of the above-mentioned adhesive is: mix high-strength artificial sand specially used for cement gel, water reducer and water in a mixer and stir for 4 minutes to obtain the cement adhesive added with high-strength artific...

Embodiment 2

[0020] Embodiment 2: basically the same as Example 1, the difference is that the raw material ratio of the cement includes: 53.28% cement, 31.97% special high-strength artificial sand for cement gel, 1.86% water reducing agent, and 12.9% water. % (This experiment is based on Experiment 1, changing the amount of high-strength artificial sand specially used for cement gel).

Embodiment 3

[0021] Embodiment 3: basically the same as Example 1, the difference is that the raw material ratio of the cement comprises by weight: 50.58% cement, 35.41% special high-strength artificial sand for cement gel, 1.77% water reducing agent, and 12.24% water (This experiment is based on the experiment 1, changing the amount of high-strength artificial sand specially used for cement gel).

[0022] The composition and ratio of existing cement raw materials: Portland cement 56.3%, quartz sand 28.2%, water reducing agent 1.97%, water 13.53%.

[0023] Adopt similar to GB / T17671-1999 " cement mortar strength test method (IS0) " to test, each embodiment and the comparative test data of existing cement are shown in the table below:

[0024]

[0025] It can be seen from the above table that after adding high-strength artificial sand special for cement gel, the strength of the adhesive prepared by the optimal ratio in the embodiment is about 30% higher than that of the existing adhesive...

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Abstract

The invention discloses a high-strength cement adhesive which is prepared from the following components in percentage by weight: 45%-60% of cement, 28%-35% of high-strength artificial sands special for a cement gel, 1.5%-2% of a water reducer and the balance of water. A preparation method comprises the following steps: firstly, uniformly mixing the cement with the high strength artificial sands special for the cement gel, adding water and the water reducer, and then further stirring for 4 minutes-8 minutes to prepare the adhesive; and then, after moulding an adhesive specimen, putting the adhesive specimen in a maintenance box at 50 DEG C-60 DEG C to evaporate, wherein the humidity is not less than 95%, demoulding for 4 hours-6 hours, and putting a demoulded specimen in hot water at 45 DEG C-70 DEG C to be maintained for 48 hours-96 hours. The high strength cement adhesive disclosed by the invention has excellent performances of simple components, stable performance and high strength. The adhesive is suitable for electric porcelain products of various high strength suspended porcelain insulators, so that the percent of pass of the insulators is remarkably improved and the production cost of the insulators is further lowered.

Description

technical field [0001] The invention relates to a cement adhesive added with high-strength artificial sand special for cement gel. The adhesive of the invention relates to excellent performances such as simple components, stable performance and high strength; it is suitable for various high-strength suspension porcelain insulators product. Background technique [0002] At present, the cement adhesive used in domestic electric porcelain factories has much lower mechanical strength than porcelain parts and metal accessories, and increasing the strength of cement adhesive has been paid more and more attention. There are existing patents on adhesives, which improve the strength of adhesives by adding water-reducing agents, adjusting the composition of cement, or adding silica fume, fly ash, and slag micro-powdered micro-aggregates, but the composition ratio of multiple components is complicated. Sexuality, resulting in unstable performance of the adhesive and inconvenient opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06
Inventor 张耀辰
Owner 张耀辰
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