Anchoring mortar and application method thereof

A mortar and anchoring technology, applied in the field of anchoring mortar, can solve problems such as endangering traffic safety, railway line conduction, loss of communication signals, etc., to improve cohesive strength and tensile strength, good dispersion and film-forming properties, and increase early The effect of intensity

Active Publication Date: 2016-01-06
BEIJING RUNHIGH SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent application number 200810100968.6 discloses a rapid grouting material that can be used for railway bridge bearings. Its two-hour compressive strength is only higher than 20MPa, which cannot meet the early high-strength requirements for railway repair operations.
[0006] In addition, ordinary mortar-type anchoring agents also have the problem of non-insulation. The wet insulation resistance is only a few megohms, which is far from the 120 megohm wet insulation resistance index required by the railway industry standard. Using ordinary mortar-type anchoring agents to anchor the spiral track of sleepers Nails, because they are not insulated, will cause the railway line to conduct electricity, resulting in a red light band, resulting in loss of communication signals, endangering driving safety, and causing drivi

Method used

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  • Anchoring mortar and application method thereof
  • Anchoring mortar and application method thereof
  • Anchoring mortar and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Raw material components:

[0042] Sulphoaluminate cement: 32 kg;

[0043] 52.5 kg of sand;

[0044] Early strength agent: 0.3 kg of sodium carbonate;

[0045] Accelerator: 0.2 kg of lithium nitrate;

[0046] Interface adhesive: 3 kg of acrylic resin latex powder;

[0047] Interface penetrating agent: sodium silicate 0.5 kg;

[0048] Micro expansion agent: 3.2 kg of gypsum, 2.4 kg of quicklime;

[0049] Acid-resistant powder: 3 kg of basalt rock powder;

[0050] Insulation performance improver: 2 kg of leucine;

[0051] Additional functional additives to adjust workability and setting time:

[0052] Retarder: 0.2 kg;

[0053] Air-entraining agent: 0.1 kg;

[0054] Cellulose: 0.1 kg;

[0055] Defoamer: 0.2 kg;

[0056] Water reducing agent: 0.3 kg.

[0057] Instructions:

[0058] Mortar preparation:

[0059] 1) After weighing the above-mentioned raw materials by weight, put the sulphoaluminate cement and sand in a dry powder mixer and stir evenly, and then m...

Embodiment 2

[0066] Raw material components:

[0067] Sulphoaluminate cement: 32 kg;

[0068] Sand: 52.5 kg;

[0069] Early strength agent: 0.3 kg of sodium carbonate;

[0070] Accelerator: 0.2 kg of lithium nitrate;

[0071] Interface adhesive: 3 kg of acrylic resin latex powder;

[0072] Interface penetrating agent: sodium silicate 0.5 kg;

[0073] Micro expansion agent: 3.2 kg of gypsum, 2.4 kg of quicklime;

[0074] Acid-resistant powder: 3 kg of basalt rock powder;

[0075] Insulation performance improver: 2 kg of serine;

[0076] Additional functional additives to adjust workability and setting time:

[0077] Retarder: 0.2 kg;

[0078] Air-entraining agent: 0.1 kg;

[0079] Cellulose: 0.1 kg;

[0080] Defoamer: 0.2 kg;

[0081] Water reducing agent: 0.3 kg.

[0082] Using method: with embodiment 1.

Embodiment 3

[0084] Raw material components:

[0085] Sulphoaluminate cement: 32 kg;

[0086] Sand: 52.5 kg;

[0087] Early strength agent: 0.3 kg of sodium carbonate;

[0088] Accelerator: 0.2 kg of lithium nitrate;

[0089] Interface adhesive: 3 kg of acrylic resin latex powder;

[0090] Interface penetrating agent: sodium silicate 0.5 kg;

[0091] Micro expansion agent: 3.2 kg of gypsum, 2.4 kg of quicklime;

[0092] Acid-resistant powder: 3 kg of basalt rock powder;

[0093] Insulation performance improver: barium oxide 2 kg;

[0094] Additional functional additives to adjust workability and setting time:

[0095] Retarder: 0.2 kg;

[0096] Air-entraining agent: 0.1 kg;

[0097] Cellulose: 0.1 kg;

[0098] Defoamer: 0.2 kg;

[0099] Water reducing agent: 0.3 kg.

[0100] Using method: with embodiment 1.

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Abstract

The invention relates to anchoring mortar and an application method thereof. The anchoring mortar particularly comprises the following raw materials in parts by weight: 20-90 parts of cement or cement clinker, 5-70 parts of sand, 0.01-10 parts of an early strength agent, 0.01-8 parts of an accelerating agent, 0.01-10 parts of an interface binding agent, 0.01-10 parts of an interface penetrating agent, 0.01-10 parts of a micro-expanding agent, 0.01-10 parts of an acid-proof powder, 0.01-10 parts of an insulating property improving agent, 0-8 parts of a retarding agent, 0-8 parts of an air entraining agent, 0-8 parts of cellulose, 0-8 parts of a defoaming agent and 0.01-8 parts of a water reducing agent. Compared with the conventional spike anchoring material, the anchoring mortar has the advantages that the formula construction is simple and convenient, heating decoction is not needed, pollution is avoided, the early strength is high, the long-term strength does not shrink, the pulling resistance is high, and the insulativity is good; interference on railway signals by sleeper electric conduction can be prevented, and the driving safety can be ensured.

Description

technical field [0001] The invention relates to the field of railway concrete sleeper construction, in particular to an anchoring mortar and an application method thereof. Background technique [0002] The railway rail is fixed on the sleeper by spiral spikes and nuts through spring fasteners, and the spiral spike is anchored in the nail hole of the sleeper with an anchoring agent to form a whole with the sleeper. [0003] At present, the anchoring agents used in the anchoring of spiral spikes include sulfur cement anchoring agents, resin anchoring agents, and ordinary mortar anchoring agents. The most widely used anchoring method for screw spikes in my country is the use of sulfur cement anchoring agent. Sulfur cement anchoring agent is made by boiling sulfur, cement, sand and paraffin in a certain proportion and heating to 140°C-160°C. It has the characteristics of relatively cheap price, fast curing speed and good insulation. However, there are also large pollution (a ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/04C04B28/06C04B28/34E01B29/42
Inventor 胡斌阮军孟令梅黄思辰陈俊路
Owner BEIJING RUNHIGH SCI & TECH
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