A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modified recycled aggregate, preparation method thereof and conductive recycled aggregate asphalt mixture
The invention belongs to the technical field of road materials, and particularly relates to a modified recycled aggregate, a preparation method thereof and a conductive recycled aggregate asphalt mixture. The preparation method of the modified recycled aggregate comprises the following steps: mixing polyvinyl alcohol, acrylamide and a graphene dispersion liquid, and heating until the polyvinyl alcohol and the acrylamide are completely dissolved; cooling the mixture obtained in the step (1) to room temperature, adding nano montmorillonite and ammonium persulfate, and heating for reaction to obtain graphene/polyvinyl alcohol/polyacrylamide nano composite hydrogel; and soaking the recycled aggregate in the graphene/polyvinyl alcohol/polyacrylamide nano-composite hydrogel aqueous solution, and air-drying after soaking to obtain the modified recycled aggregate. The porosity of the modified recycled aggregate is obviously reduced, and the mechanical property, heat conductivity and electrical conductivity are obviously improved.
本发明属于道路材料技术领域，具体涉及一种改性再生骨料及其制备方法和导电再生骨料沥青混合料。本发明的改性再生骨料的制备方法包括下述步骤：将聚乙烯醇、丙烯酰胺和石墨烯分散液混合，并加热至聚乙烯醇和丙烯酰胺完全溶解；将经步骤(1)处理所得的混合物冷却至室温，加入纳米蒙脱石和过硫酸铵，升温反应，得到石墨烯/聚乙烯醇/聚丙烯酰胺纳米复合水凝胶；将再生骨料浸泡于石墨烯/聚乙烯醇/聚丙烯酰胺纳米复合水凝胶水溶液中，浸泡结束后，风干，即得改性再生骨料。本发明的改性再生骨料孔隙率明显下降，力学性能和导热、导电性得到明显提升。
Modified recycled aggregate, preparation method thereof and conductive recycled aggregate asphalt mixture
The invention belongs to the technical field of road materials, and particularly relates to a modified recycled aggregate, a preparation method thereof and a conductive recycled aggregate asphalt mixture. The preparation method of the modified recycled aggregate comprises the following steps: mixing polyvinyl alcohol, acrylamide and a graphene dispersion liquid, and heating until the polyvinyl alcohol and the acrylamide are completely dissolved; cooling the mixture obtained in the step (1) to room temperature, adding nano montmorillonite and ammonium persulfate, and heating for reaction to obtain graphene/polyvinyl alcohol/polyacrylamide nano composite hydrogel; and soaking the recycled aggregate in the graphene/polyvinyl alcohol/polyacrylamide nano-composite hydrogel aqueous solution, and air-drying after soaking to obtain the modified recycled aggregate. The porosity of the modified recycled aggregate is obviously reduced, and the mechanical property, heat conductivity and electrical conductivity are obviously improved.
本发明属于道路材料技术领域，具体涉及一种改性再生骨料及其制备方法和导电再生骨料沥青混合料。本发明的改性再生骨料的制备方法包括下述步骤：将聚乙烯醇、丙烯酰胺和石墨烯分散液混合，并加热至聚乙烯醇和丙烯酰胺完全溶解；将经步骤(1)处理所得的混合物冷却至室温，加入纳米蒙脱石和过硫酸铵，升温反应，得到石墨烯/聚乙烯醇/聚丙烯酰胺纳米复合水凝胶；将再生骨料浸泡于石墨烯/聚乙烯醇/聚丙烯酰胺纳米复合水凝胶水溶液中，浸泡结束后，风干，即得改性再生骨料。本发明的改性再生骨料孔隙率明显下降，力学性能和导热、导电性得到明显提升。
Modified recycled aggregate, preparation method thereof and conductive recycled aggregate asphalt mixture
一种改性再生骨料及其制备方法和导电再生骨料沥青混合料
WU JIAYU (author) / WEN XIAODONG (author) / FENG LEI (author) / LI CHAO'EN (author) / YIN GUANGJI (author) / ZHOU MING (author) / SUN YUN (author) / CHEN JIE (author)
2023-03-03
Patent
Electronic Resource
Chinese
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