仿生复眼系统的视场重叠率

Wenxuan, 李文轩 Li; Yuan, 胡源 Hu; Kai, 张凯 Zhang; Mingze, 秦铭泽 Qin; Xiyao, 袁夕尧 Yuan; Tianci, 刘天赐 Liu; Qiang, 骆强 Luo

doi:10.3788/irla20200435

Cited by 1 publication

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“…The high viscosity modified asphalt has the advantage of strong cohesion [3][4][5], which is suitable for use in large void asphalt mixture, and can effectively prolong the service life of drainage pavement. However, due to its high viscosity, the mixing temperature of asphalt will be greatly increased, which is easy to cause problems such as asphalt aging [6] and environmental pollution [7]. Warm mixing technology [8,9] can effectively reduce the temperature of asphalt during construction.…”

Section: Introductionmentioning

confidence: 99%

Rheological properties of warm mixed high viscosity asphalt at high and low temperatures

Lei,

Zheng,

Wang

et al. 2024

PLoS ONE

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The rheological properties of asphalt can well reflect its road performance, but the rheological properties of warm mix high viscosity asphalt (HVA) are unclear. In order to study the effect of warm mixing agent on rheological properties of HVA, two kinds of warm mixing agent EC120 (EC) and Evotherm M1 (M1) were selected to prepare warm mix HVA. The rheological properties of warm mix HVA at high temperature (135~195°C), medium temperature (0~80°C) and low temperature (-6~18°C) were studied by Brinell rotary viscosity test, dynamic shear rheological test (including temperature scanning, frequency scanning, linear amplitude scanning) and bending beam rheological test. The test results show that both EC and M1 have good viscosity reduction effect on HVA at high temperature, and can effectively reduce the construction temperature. At medium temperature, M1 can effectively improve the fatigue resistance of HVA, and the fatigue life can be increased by about 30% when the dosage is 0.6%. EC can increase the rutting factor of HVA and improve its resistance to deformation, but it will reduce its fatigue performance. When the dosage is 4%, the fatigue life will be reduced by about 9%. At low temperature, M1 can reduce the creep stiffness S, increase the creep rate m, and improve the low temperature performance of HVA, while EC has the opposite effect, weakening the low temperature performance of HVA. The results are helpful to understand the rheological properties of warm mix HVA and promote its application.

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