A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bendable plastic asphalt composite-based cementing material mixture and preparation method thereof
The invention relates to a bendable plastic asphalt composite-based cementing material mixture and a preparation method thereof. The preparation method comprises the following steps: S1, preparing SBS modified asphalt; s2, preparing composite modified asphalt; s3, preparation of a plastic asphalt composite-based cementing material mixture: taking a mineral aggregate and the composite modified asphalt prepared in S2 according to an asphalt-aggregate ratio of 4-6%, heating a mixing pot, then adding the taken composite modified asphalt and the aggregate, mixing for 90 seconds, then adding the mineral powder, continuously mixing for 90 seconds, then adding LLDPE particles, and uniformly mixing to obtain the plastic asphalt composite-based cementing material mixture, wherein the mineral aggregate is composed of aggregate and mineral powder, and the mass of the mineral powder is 1.5-2.2% of that of the mineral aggregate; and mixing for 90 seconds, and keeping the temperature for 90 seconds. The mixed material has the advantages that the bending performance of the mixed material at normal temperature is improved by about 30% while the pavement performance indexes such as high-temperature stability, low-temperature crack resistance and water stability are ensured to meet the specifications, so that the bending performance of the mixed material reaches the bending performance indexes corresponding to the thickness and curling radius of a prefabricated thin layer.
本发明涉及一种可弯曲式塑料沥青复合基胶结料混合料及其制备方法，该制备方法为：S1.SBS改性沥青制备；S2.复合改性沥青制备；S3.塑料沥青复合基胶结料混合料制备：按油石比4‑6％取用矿料和S2制备的复合改性性沥青，矿料由集料和矿粉组成，矿粉质量为矿料质量的1.5‑2.2％，先将拌合锅加热，随后加入取用的复合改性沥青和集料，拌合90s后加入矿粉，继续拌合90s后加入LLDPE颗粒，再拌合90s，保温90s后即得。本发明优点为，在保证高温稳定性、低温抗裂性及水稳定性等路用性能指标满足规范的同时，将混合料在常温下的的弯曲性能提升约30％，使其弯曲性能达到预制薄层厚度及卷曲半径所对应的弯曲性能指标。
Bendable plastic asphalt composite-based cementing material mixture and preparation method thereof
The invention relates to a bendable plastic asphalt composite-based cementing material mixture and a preparation method thereof. The preparation method comprises the following steps: S1, preparing SBS modified asphalt; s2, preparing composite modified asphalt; s3, preparation of a plastic asphalt composite-based cementing material mixture: taking a mineral aggregate and the composite modified asphalt prepared in S2 according to an asphalt-aggregate ratio of 4-6%, heating a mixing pot, then adding the taken composite modified asphalt and the aggregate, mixing for 90 seconds, then adding the mineral powder, continuously mixing for 90 seconds, then adding LLDPE particles, and uniformly mixing to obtain the plastic asphalt composite-based cementing material mixture, wherein the mineral aggregate is composed of aggregate and mineral powder, and the mass of the mineral powder is 1.5-2.2% of that of the mineral aggregate; and mixing for 90 seconds, and keeping the temperature for 90 seconds. The mixed material has the advantages that the bending performance of the mixed material at normal temperature is improved by about 30% while the pavement performance indexes such as high-temperature stability, low-temperature crack resistance and water stability are ensured to meet the specifications, so that the bending performance of the mixed material reaches the bending performance indexes corresponding to the thickness and curling radius of a prefabricated thin layer.
本发明涉及一种可弯曲式塑料沥青复合基胶结料混合料及其制备方法，该制备方法为：S1.SBS改性沥青制备；S2.复合改性沥青制备；S3.塑料沥青复合基胶结料混合料制备：按油石比4‑6％取用矿料和S2制备的复合改性性沥青，矿料由集料和矿粉组成，矿粉质量为矿料质量的1.5‑2.2％，先将拌合锅加热，随后加入取用的复合改性沥青和集料，拌合90s后加入矿粉，继续拌合90s后加入LLDPE颗粒，再拌合90s，保温90s后即得。本发明优点为，在保证高温稳定性、低温抗裂性及水稳定性等路用性能指标满足规范的同时，将混合料在常温下的的弯曲性能提升约30％，使其弯曲性能达到预制薄层厚度及卷曲半径所对应的弯曲性能指标。
Bendable plastic asphalt composite-based cementing material mixture and preparation method thereof
一种可弯曲式塑料沥青复合基胶结料混合料及其制备方法
SONG KUN (author) / FAN XUEJUN (author) / XU YANG (author) / XI XIAOBO (author) / LI JIAOXIAN (author)
2024-07-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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