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A platform for research: civil engineering, architecture and urbanism
Biochar modified aggregate for improving asphalt and aggregate interface adhesiveness and preparation method
The invention relates to a biochar modified aggregate for improving asphalt and aggregate interface adhesiveness and a preparation method thereof. The preparation method comprises the following steps: coating the surface of an aggregate to be modified with biomass wastes; the biomass waste is converted into a biochar layer through pyrolysis carbonization treatment; and annealing and sieving to obtain modified aggregate enriched with a biochar layer, so that abundant pore structures are generated on the surface of the aggregate, the specific surface area is increased, the adhesiveness between the aggregate and asphalt is enhanced, and a target biochar modified aggregate product is obtained. Compared with the prior art, the method has the advantages that the biochar is enriched on the surface of the aggregate, the adhesiveness between the aggregate and the asphalt in the asphalt concrete is enhanced by utilizing the large specific surface area and the rich pore structure of the biochar, and the stability of the asphalt concrete is improved by enhancing the original weak interface between the aggregate and the asphalt; a new thought is provided for improving the pavement performance of the asphalt pavement and preparing a long-life pavement.
本发明涉及一种用于提升沥青与集料界面黏附性的生物炭改性集料及制备方法，制备包括以下步骤：在待改性集料表面裹覆生物质废弃物；通过热解炭化处理，使生物质废弃物转化为生物炭层；进行退火及过筛处理，得到富集了一层生物炭层的改性集料，使得集料表面生成丰富的孔隙结构，实现比表面积增大，与沥青间的黏附性增强，得到目标生物炭改性集料产品。与现有技术相比，本发明通过在集料表面富集生物炭，利用生物炭的大比表面积和丰富的孔隙结构，增强沥青混凝土中集料和沥青间的黏附性，通过增强原本软弱的集料和沥青间的界面，提升沥青混凝土的谁稳定性，为提升沥青路面的路面性能和制备长寿命路面提供新思路。
Biochar modified aggregate for improving asphalt and aggregate interface adhesiveness and preparation method
The invention relates to a biochar modified aggregate for improving asphalt and aggregate interface adhesiveness and a preparation method thereof. The preparation method comprises the following steps: coating the surface of an aggregate to be modified with biomass wastes; the biomass waste is converted into a biochar layer through pyrolysis carbonization treatment; and annealing and sieving to obtain modified aggregate enriched with a biochar layer, so that abundant pore structures are generated on the surface of the aggregate, the specific surface area is increased, the adhesiveness between the aggregate and asphalt is enhanced, and a target biochar modified aggregate product is obtained. Compared with the prior art, the method has the advantages that the biochar is enriched on the surface of the aggregate, the adhesiveness between the aggregate and the asphalt in the asphalt concrete is enhanced by utilizing the large specific surface area and the rich pore structure of the biochar, and the stability of the asphalt concrete is improved by enhancing the original weak interface between the aggregate and the asphalt; a new thought is provided for improving the pavement performance of the asphalt pavement and preparing a long-life pavement.
本发明涉及一种用于提升沥青与集料界面黏附性的生物炭改性集料及制备方法，制备包括以下步骤：在待改性集料表面裹覆生物质废弃物；通过热解炭化处理，使生物质废弃物转化为生物炭层；进行退火及过筛处理，得到富集了一层生物炭层的改性集料，使得集料表面生成丰富的孔隙结构，实现比表面积增大，与沥青间的黏附性增强，得到目标生物炭改性集料产品。与现有技术相比，本发明通过在集料表面富集生物炭，利用生物炭的大比表面积和丰富的孔隙结构，增强沥青混凝土中集料和沥青间的黏附性，通过增强原本软弱的集料和沥青间的界面，提升沥青混凝土的谁稳定性，为提升沥青路面的路面性能和制备长寿命路面提供新思路。
Biochar modified aggregate for improving asphalt and aggregate interface adhesiveness and preparation method
一种用于提升沥青与集料界面黏附性的生物炭改性集料及制备方法
GU XINGYU (author) / ZHAO DAN (author) / JIANG JIWANG (author) / ZHOU ZHOU (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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