Asphalt emulsifier for anionic emulsified asphalt cement plaster

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

Active Publication Date: 2011-01-19
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] Get sodium lignosulfonate (sodium broad-leaved pine lignosulfonate, about 22000 molecular weight, Vanisperse CB of Borregaard company) and each 25 grams of octylphenol polyether (number average molecular weight 2500), 2 grams of NaOH and carboxymethyl cellulose Sodium plain 0.15 gram (number-average molecular weight of sodium carboxymethyl cellulose is 15000), be dissolved in 20 grams of water and stir evenly, the obtained sample is coded as No. 1, and do emulsified asphalt test.

Embodiment 2

[0019] Get sodium lignosulfonate (sulfonation degree 8.7%, molecular weight 35000, sodium coniferous 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, each 30 grams of O-20 that comes from Xingtai auxiliary agent factory), NaOH 2 grams and sodium carbonate 0.2 grams, be dissolved in 22 grams of water and disperse evenly, gained sample is compiled as No. 2, and make Emulsified asphalt test.

Embodiment 3

[0021] Get sodium lignosulfonate (sulfonation degree 8.7%, molecular weight 35000, sodium coniferous pine lignosulfonate (from LFCA8101 of Shanghai Longfu Industrial Company)) 25 grams, fatty alcohol ether (the carbon on the aliphatic group Number is C 12 -C 18 , number average molecular weight 1020, 12 grams of O-20) and 22 grams of secondary octylphenol polyoxyethylene ether (number average molecular weight 1530) derived from Xingtai auxiliary agent factory, 1.5 grams of NaOH and 0.1 grams of sodium borate, dissolved in 13 gram of water, and stirred evenly, the obtained sample was coded as No. 3, and tested for emulsified asphalt.

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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 shearing equipment, in which asphalt particles are a dispersion and water is a dispersed phase. The performance of emulsified asphalt is determined by the emulsifier, such as the fineness of asphalt particles, the storage stability of 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 begins, as the water in the system decreases, the emulsified asphalt begins to demulsify, and finally forms cement concrete containing asphalt particles. Among them, the size of asphalt particles a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/00
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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