路用生物瀝青研究進展
發(fā)布時間:2018-12-12 17:07
【摘要】:生物瀝青是將由生物質(zhì)快速熱裂解制備提煉的生物質(zhì)重油與石油瀝青在一定條件下相溶合或者將生物質(zhì)重油在一定條件下?lián)郊悠渌鈸絼?制備而成的結(jié)合物。介紹比較了現(xiàn)有生物質(zhì)重油煉制方法及生物瀝青的制備工藝,對比分析了不同類型生物瀝青結(jié)合料的性能表征及性狀特點,指出了生物瀝青化學(xué)改性機制的研究手段,闡述了生物瀝青結(jié)合料與混合料研究過程中發(fā)現(xiàn)的問題及其成因,并對其下一步研究方向進行了展望,F(xiàn)有研究表明,生物瀝青的高溫性能較弱,其改性機制的定量評價仍不夠全面系統(tǒng)?梢酝ㄟ^摻入聚合物、多聚磷酸、納米粘土等外摻劑改善生物瀝青的高溫性能,基于數(shù)字圖像方法的材料微觀形態(tài)特征分析可為生物瀝青化學(xué)改性機制的研究提供新的途徑。
[Abstract]:Bio-asphalt is a kind of binder prepared by dissolving biomass heavy oil and petroleum asphalt under certain conditions or adding other admixtures under certain conditions. This paper introduces and compares the existing refining methods of biomass heavy oil and the preparation process of bio-bitumen, compares and analyzes the performance characterization and characteristics of different types of bio-asphalt binders, and points out the research methods of the chemical modification mechanism of bio-asphalt. The problems found in the research of bitumen binder and mixture and their causes are described, and the future research direction is prospected. The existing studies show that the high temperature performance of the bitumen is weak, and the quantitative evaluation of its modification mechanism is still not comprehensive and systematic. The high temperature properties of bitumen can be improved by adding polymer, polyphosphoric acid, nano-clay and other admixtures. The analysis of microstructure characteristics based on digital image method can provide a new way to study the mechanism of chemical modification of bio-asphalt.
【作者單位】: 長安大學(xué)道路結(jié)構(gòu)與材料交通行業(yè)重點實驗室;中國石油大學(xué)(華東)重質(zhì)油國家重點實驗室;
【基金】:國家自然科學(xué)基金(51378074) 交通運輸部應(yīng)用基礎(chǔ)研究項目(2014319812180)
【分類號】:U414
[Abstract]:Bio-asphalt is a kind of binder prepared by dissolving biomass heavy oil and petroleum asphalt under certain conditions or adding other admixtures under certain conditions. This paper introduces and compares the existing refining methods of biomass heavy oil and the preparation process of bio-bitumen, compares and analyzes the performance characterization and characteristics of different types of bio-asphalt binders, and points out the research methods of the chemical modification mechanism of bio-asphalt. The problems found in the research of bitumen binder and mixture and their causes are described, and the future research direction is prospected. The existing studies show that the high temperature performance of the bitumen is weak, and the quantitative evaluation of its modification mechanism is still not comprehensive and systematic. The high temperature properties of bitumen can be improved by adding polymer, polyphosphoric acid, nano-clay and other admixtures. The analysis of microstructure characteristics based on digital image method can provide a new way to study the mechanism of chemical modification of bio-asphalt.
【作者單位】: 長安大學(xué)道路結(jié)構(gòu)與材料交通行業(yè)重點實驗室;中國石油大學(xué)(華東)重質(zhì)油國家重點實驗室;
【基金】:國家自然科學(xué)基金(51378074) 交通運輸部應(yīng)用基礎(chǔ)研究項目(2014319812180)
【分類號】:U414
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