【摘要】：以硬質(zhì)瀝青為代表,研究探索了瀝青顆粒化成型相關(guān)技術(shù),并確定了工藝參數(shù)。鋼帶冷凝造粒法作為熔融造粒法的典型代表,適用于瀝青類(lèi)物質(zhì)的顆粒化成型。針對(duì)成型后瀝青顆粒在高溫下彼此黏結(jié)的問(wèn)題,采取隔離措施防止黏結(jié)。PEG和PVC作為不同裹覆方式的典型代表,可作為隔離材料防止瀝青顆粒的黏結(jié)。裹覆PEG和PVC的硬質(zhì)瀝青顆�？稍�50℃環(huán)境下保持顆粒良好。此外考察了隔離材料對(duì)硬質(zhì)瀝青微觀性能的影響,結(jié)果顯示:硬質(zhì)瀝青中相對(duì)低的飽和分與芳香分含量使得PEG和PVC難于在硬質(zhì)瀝青內(nèi)分散均勻。FTIR結(jié)果顯示,醚基的出現(xiàn)顯示PEG對(duì)硬質(zhì)瀝青進(jìn)行了化學(xué)改性,而PVC未對(duì)硬質(zhì)瀝青進(jìn)行化學(xué)改性。本研究的瀝青顆粒成型工藝和隔離措施可應(yīng)用到基質(zhì)和改性瀝青的顆粒成型,實(shí)現(xiàn)瀝青材料的冷運(yùn)輸。
[Abstract]:On the basis of hard asphalt, the related technology of asphalt granulation was studied and the process parameters were determined. The steel strip condensation and granulation method is used as a typical representative of the melt-granulation method, and is suitable for the granulation forming of the asphalt material. In the light of the problems that the asphalt particles are bonded to each other at high temperature, the isolation measures are adopted to prevent the bonding. PEG and PVC, as a typical representative of different coating methods, can be used as an isolation material to prevent the bonding of the asphalt particles. The hard asphalt particles coated with PEG and PVC can keep the particles well under the environment of 50 DEG C. The effect of the isolation materials on the microstructure of the hard asphalt was also investigated. The results showed that the relatively low saturated and aromatic content in the hard asphalt made it difficult to disperse the PEG and PVC in the hard asphalt. The FTIR results show that the presence of the ether group shows that the PEG has the chemical modification to the hard asphalt, and the PVC does not chemically modify the hard asphalt. The technology and the isolation measures of the asphalt particle in this study can be applied to the particle formation of the matrix and the modified asphalt to realize the cold transport of the asphalt material.
【作者單位】： 山西省交通科學(xué)研究院;新型道路材料國(guó)家地方聯(lián)合工程試驗(yàn)室;
【基金】：山西省交通運(yùn)輸廳科技計(jì)劃項(xiàng)目,項(xiàng)目編號(hào)2016-1-27,2017-1-26 山西省基礎(chǔ)研究項(xiàng)目,項(xiàng)目編號(hào)2015021074 山西省科技成果轉(zhuǎn)化引導(dǎo)專(zhuān)項(xiàng),項(xiàng)目編號(hào)201604D121017
【分類(lèi)號(hào)】：U414

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