Warm-mix hard asphalt and preparation method thereof

A technology of hard bitumen and matrix bitumen, which is used in building thermal insulation materials, building components, climate change adaptation, etc. , the effect of wide applicability

Active Publication Date: 2012-12-26
JIANGSU BAOLI INT INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyethylene wax used in this technical solution is made from pure raw materials, so the price is relatively high, and it is difficult to popularize and apply
In addition, SasobitFT wax, AsphaltanB (montan wax), SLA (fatty amide compound), etc. also have good viscosity-reducing effects on asphalt, but because of their high prices, it has seriously hindered the popularization and application of warm-mix asphalt

Method used

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  • Warm-mix hard asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 10 kg of waste polyethylene cracking wax (RPEW of Shanghai Heyuan Plastic Technology Co., Ltd.) and 5 kg of petroleum resin (produced by Daqing Huake Co., Ltd.) P90), then add polyethylene wax grafted maleic anhydride (MP wax produced by Hangzhou Junyi Company) and silane coupling agent (Si-69 of Jiangsu Aiteen Polymer Material Co., Ltd.) each 0.25 kg, at 150 Stir at °C for 30 minutes. The comprehensive performance index of the asphalt (No. A1) is listed in Table 1 below.

[0046] A1 compared with C1: Compared with unmodified asphalt C1, modified asphalt A1, polyethylene wax grafted with maleic anhydride and silane coupling agent have little effect on the viscosity, penetration and softening point of asphalt.

[0047] Comparing A1 with C3: Compared with modified asphalt C3, the added petroleum resin in modified asphalt A1 reduces the needle penetration, increases the softening point, and has little effect on the viscosity.

[0048] A1 vs. C4: Modified bitumen A1 c...

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Abstract

The invention provides warm-mix hard asphalt which is characterized in that the hard asphalt comprises base asphalt, cracked polyethylene wax, petroleum resin, polyethylene-wax-grafted maleic anhydride, and a silane coupling agent. According to the invention, high-temperature-cracked waste polyethylene and petroleum cracking product petroleum resin are adopted as viscosity reducers, such that the warm-mix hard asphalt with a relatively low cost is obtained. The method provided by the invention has the advantages of simple technology, convenient operation, and wide application scope. The resource of the recycled polyethylene raw materials is wide, and the costs of the raw materials are low. Also, a good modification effect can be provided for asphalt.

Description

technical field [0001] The invention relates to a warm-mix hard asphalt and a preparation method thereof, in particular to a warm-mix hard asphalt suitable for use in hot and humid areas and a preparation method thereof. Background technique [0002] Due to the high construction temperature of the traditional hot mix asphalt mixture HMA (Hot Mix Asphalt), it not only consumes a lot of energy, but also emits a lot of waste gas and dust during the production and construction process, which seriously affects the surrounding environmental quality and The health of construction workers. In order to make up for the deficiency of HMA, people have developed a new environment-friendly and energy-saving product, Warm Mix Asphalt (WMA). The so-called WMA is to reduce the construction viscosity of asphalt through certain technical measures, so that the asphalt can be mixed and constructed at a relatively low temperature, while ensuring that it has basically the same road performance an...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/06C08L57/02C08L51/06C08K5/54C08K5/548
CPCY02A30/30
Inventor 汪红兵王仕峰朱亚琴
Owner JIANGSU BAOLI INT INVESTMENT CO LTD
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