Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Emulsified asphalt cold-recycled mixture based on papermaking waste liquid modification and preparation method of emulsified asphalt cold-recycled mixture
The invention belongs to the technical field of coal gangue modification, and particularly provides a preparation method of an emulsified asphalt cold recycled mixture based on papermaking waste liquid modification. The method mainly comprises the following key steps: S1, pretreating coal gangue; the method comprises the following steps: firstly, crushing and screening coal gangue to obtain coal gangue powder with the particle size of about 0.18 mm; s2, modifying and activating the coal gangue fine powder, and grinding 2-4 parts by weight of the coal gangue fine powder in a planetary ball mill. The preparation method has the advantages that by introducing the lignosulfonate, the coal gangue powder can fully absorb the anionic emulsifier and form a microcapsule structure. When the coal gangue powder is added into the emulsified asphalt mixture, the surface of the RAP material can be modified, and meanwhile, the coal gangue powder and the cationic emulsified asphalt can generate a charge attraction effect, so that the emulsified asphalt, the coal gangue powder and the RAP material are tightly bonded, and the synergistic interaction effect of the coal gangue powder and the anionic emulsifier is fully exerted; therefore, the early strength and the overall performance of the emulsified asphalt cold-recycled mixture are improved.
本发明属于煤矸石改性技术范畴，特别提出了基于造纸废液改性的乳化沥青冷再生混合料的制备方法。该方法主要包括以下几个关键步骤：S1：对煤矸石进行预处理。首先将煤矸石破碎并筛分，得到粒径约为0.18mm的煤矸石粉；S2：对煤矸石细粉进行改性活化处理，将2～4重量份的煤矸石细粉置于行星式球磨仪中进行研磨。本发明的优势在于，通过木质素磺酸盐的引入，煤矸石粉能够充分吸收阴离子乳化剂并形成微胶囊结构。煤矸石粉加入到乳化沥青混合料中会对RAP料表面进行改性，同时会与阳离子乳化沥青发生电荷吸引作用，使乳化沥青和煤矸石粉、RAP料紧密粘合，充分发挥煤矸石粉和阴离子乳化剂的协同增效作用，从而提高乳化沥青冷再生混合料的早期强度和整体性能。
Emulsified asphalt cold-recycled mixture based on papermaking waste liquid modification and preparation method of emulsified asphalt cold-recycled mixture
The invention belongs to the technical field of coal gangue modification, and particularly provides a preparation method of an emulsified asphalt cold recycled mixture based on papermaking waste liquid modification. The method mainly comprises the following key steps: S1, pretreating coal gangue; the method comprises the following steps: firstly, crushing and screening coal gangue to obtain coal gangue powder with the particle size of about 0.18 mm; s2, modifying and activating the coal gangue fine powder, and grinding 2-4 parts by weight of the coal gangue fine powder in a planetary ball mill. The preparation method has the advantages that by introducing the lignosulfonate, the coal gangue powder can fully absorb the anionic emulsifier and form a microcapsule structure. When the coal gangue powder is added into the emulsified asphalt mixture, the surface of the RAP material can be modified, and meanwhile, the coal gangue powder and the cationic emulsified asphalt can generate a charge attraction effect, so that the emulsified asphalt, the coal gangue powder and the RAP material are tightly bonded, and the synergistic interaction effect of the coal gangue powder and the anionic emulsifier is fully exerted; therefore, the early strength and the overall performance of the emulsified asphalt cold-recycled mixture are improved.
本发明属于煤矸石改性技术范畴，特别提出了基于造纸废液改性的乳化沥青冷再生混合料的制备方法。该方法主要包括以下几个关键步骤：S1：对煤矸石进行预处理。首先将煤矸石破碎并筛分，得到粒径约为0.18mm的煤矸石粉；S2：对煤矸石细粉进行改性活化处理，将2～4重量份的煤矸石细粉置于行星式球磨仪中进行研磨。本发明的优势在于，通过木质素磺酸盐的引入，煤矸石粉能够充分吸收阴离子乳化剂并形成微胶囊结构。煤矸石粉加入到乳化沥青混合料中会对RAP料表面进行改性，同时会与阳离子乳化沥青发生电荷吸引作用，使乳化沥青和煤矸石粉、RAP料紧密粘合，充分发挥煤矸石粉和阴离子乳化剂的协同增效作用，从而提高乳化沥青冷再生混合料的早期强度和整体性能。
Emulsified asphalt cold-recycled mixture based on papermaking waste liquid modification and preparation method of emulsified asphalt cold-recycled mixture
基于造纸废液改性的乳化沥青冷再生混合料及制备方法
WANG DECAI (Autor:in) / WU JINGJIANG (Autor:in) / WANG BAIYU (Autor:in) / WANG DONGSHENG (Autor:in) / LI KELIANG (Autor:in) / YIN HEJUN (Autor:in) / ZHANG CHENGSHI (Autor:in)
12.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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