New Tourmaline Composite and Its Asphalt Smoke Adsorption Performance

doi:10.3969-j.issn.1674-0696.2021.08.17

Abstract

Abstract: In order to reduce the asphalt smoke emission in the mixing process of traditional hot-mix asphalt mixture and solve the environment pollution problem during the construction of asphalt pavement, the new tourmaline composite was prepared as the modifier based on tourmaline with the function of adsorbing pollutants. The dispersion of the new tourmaline composite in asphalt was studied and the adsorption effect of the new tourmaline composite on asphalt smoke pollutants was analyzed, which provided a reference for the research and application of functional powder materials in asphalt mixture. The research results show that the new tourmaline composite is distributed evenly in asphalt. And the asphalt can completely encapsulate mineral particles, and both of them have good compatibility. At the same condition, the adsorption effect of the new tourmaline composite on asphalt smoke is better than that of tourmaline. Compared with tourmaline, the adsorption effect of the new tourmaline composite is improved by 10.10~19.08%. Compared with the base asphalt, the low-temperature performance of tourmaline and composite modified asphalt is deteriorated, but the temperature sensitivity and high-temperature stability are improved to a certain extent.

Key words: highway engineering; composite; tourmaline; special two-dimensional materials; asphalt smoke adsorption

摘要： 为减少传统热拌沥青混合料拌和过程中沥青烟排放、解决沥青路面施工时污染环境的问题，以具有污染物吸附功效的电气石为基础材料，制备新型电气石复合材料作为改性剂，并研究新型电气石复合材料在沥青中的分散性，分析新型电气石复合材料对沥青烟污染物的吸附效果，为功能性粉体材料在沥青混合料中的研究与应用提供一定参考。研究结果表明：新型电气石复合材料在沥青中分布均匀，沥青可完全包裹矿物颗粒，二者具有良好相容性；相同条件下，新型电气石复合材料对沥青烟的吸附效果优于电气石，与电气石相比，新型电气石复合材料吸附性能提高了10.10%~19.08%；与基质沥青相比，电气石及复合材料改性沥青的低温性能出现劣化，但感温性和高温稳定性得到一定程度提升。

关键词: 道路工程；复合材料；电气石；特殊二维材料；沥青烟吸附

CLC Number:

U414.1

QIAO Zhi1, CHEN Qian2, WANG Chaohui2, NIU Changchang1, GUO Tengteng2. New Tourmaline Composite and Its Asphalt Smoke Adsorption Performance[J]. Journal of Chongqing Jiaotong University(Natural Science), 2021, 40(08): 126-131.

乔志1，陈谦2，王朝辉2，牛昌昌1，郭滕滕2. 新型电气石复合材料及其沥青烟吸附性研究[J]. 重庆交通大学学报（自然科学版）, 2021, 40(08): 126-131.

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