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Asphalt emulsifier for anionic emulsified asphalt cement plaster

An asphalt emulsifier and emulsified asphalt technology, which is applied in the field of asphalt emulsifier for anionic emulsified asphalt cement mortar, can solve the problems such as difficulty in maintaining the stability of the air content of the mortar and the shape of the bubbles, fast demulsification of the emulsified asphalt, and short working time of the mortar. Achieve the effect of small particle size, strong emulsifying ability and moderate foaming ability

Active Publication Date: 2013-06-26
厦门华特公路沥青技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the emulsified asphalt demulsification that exists in the existing emulsified asphalt cement mortar too fast (mortar working time is short), poor temperature adaptability, poor compatibility with different cements, air content in the mortar and The form of bubbles is difficult to maintain stability and other defects, and an anionic emulsified asphalt emulsifier for asphalt cement mortar is provided

Method used

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  • Asphalt emulsifier for anionic emulsified asphalt cement plaster
  • Asphalt emulsifier for anionic emulsified asphalt cement plaster

Examples

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Effect test

Embodiment 1

[0017] Take 25 grams of sodium lignosulfonate (sodium broadleaf pine lignosulfonate, molecular weight about 22000, Vanisperse CB from Borregaard) and 25 grams of octylphenol polyether (number average molecular weight 2500), 2 grams of NaOH and carboxymethyl fiber 0.15 grams of sodium carboxymethyl (the number average molecular weight of sodium carboxymethyl cellulose is 15000), dissolved in 20 grams of water and stirred uniformly, the obtained sample is numbered 1 and tested for emulsified asphalt.

Embodiment 2

[0019] Take sodium lignosulfonate (degree of sulfonation 8.7%, molecular weight 35000, sodium pine lignosulfonate (from LFCA8101 of Shanghai Longfu Industrial Company)) and fatty alcohol ether (the carbon number on the aliphatic group is C 12 -C 18 , The number average molecular weight is 1020, 30 grams each of O-20 from Xingtai Auxiliary Factory, 2 grams of NaOH and 0.2 grams of sodium carbonate, dissolved in 22 grams of water and dispersed uniformly, the resulting sample is numbered 2 and used Emulsified asphalt test.

Embodiment 3

[0021] Take 25 grams of sodium lignosulfonate (degree of sulfonation 8.7%, molecular weight 35000, sodium conifer lignosulfonate (from LFCA8101 of Shanghai Longfu Industrial Company)), fatty alcohol ether (carbon on aliphatic group) Number is C 12 -C 18 , Number average molecular weight 1020, 12 grams of O-20 from Xingtai Auxiliary Factory, 22 grams of secondary octylphenol polyoxyethylene ether (number average molecular weight 1530), 1.5 grams of NaOH and 0.1 grams of sodium borate, dissolved in 13 Gram of water and stir evenly. The resulting sample is numbered 3 and used for emulsified asphalt test.

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Abstract

The invention discloses an asphalt emulsifier for anionic emulsified asphalt cement plaster. The asphalt emulsifier comprises the following components in percentage by mass: 10 to 50 percent of lignin perborate, 5 to 40 percent of nonionic surfactant and 10 to 85 percent of water, wherein the number-average molecular weight of the nonionic surfactant is between 600 and 5,800. The asphalt emulsifier for the CRTSII type anionic emulsified asphalt cement plaster has the advantages of moderate HLB value, low demulsification velocity, moderate foaming capability and high foam stability.

Description

Technical field [0001] The invention specifically relates to an asphalt emulsifier for anionic emulsified asphalt cement mortar. Background technique [0002] Emulsified asphalt refers to a suspension obtained by quantitatively passing molten asphalt and emulsifier aqueous solution through high-speed shear equipment, in which the asphalt particles are the dispersion and water is the dispersed phase. The various properties of emulsified asphalt are determined by the emulsifier, such as the fineness of the asphalt particles, the storage stability of the emulsified asphalt, and the speed of the emulsified asphalt demulsification process. [0003] Emulsified asphalt cement mortar is a mortar system formed by mixing emulsified asphalt, cement, sand, water and required additives. When the cement hydration starts, as the moisture in the system decreases, the emulsified asphalt begins to demulsify, and finally a cement concrete containing asphalt particles is formed. The size of asphalt ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/00C04B24/00
Inventor 吴德龙夏余辉朱成勇
Owner 厦门华特公路沥青技术有限公司
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