Clear asphalt(CA)currently used in light-colored asphalt mixtures(LCAM)exhibits poor transparency and adhesion.Therefore,a highly transparent CA(HCA)modified using a silane coupling agent(KH550)was prepared.Furthermor...Clear asphalt(CA)currently used in light-colored asphalt mixtures(LCAM)exhibits poor transparency and adhesion.Therefore,a highly transparent CA(HCA)modified using a silane coupling agent(KH550)was prepared.Furthermore,LCAM was prepared by mixing CA and limestone aggregates.The properties of the HCA and ordinary CA(OCA)were characterized using conventional asphalt tests,optical tests,pull-off tests,ultraviolet aging tests,dynamic shear rheometry,Fourier-transform infrared spectroscopy,differential scanning calorimetry,and scanning electron microscopy.Whereas Marshall,moisture resistance,wheel tracking,trabecular bending,and British pendulum tests were employed for the LCAM.The transmittance and spectral reflectance of the HCA were 123.30 and 3.74 times greater than those of the OCA,respectively.The complex modulus and viscosity-aging index of the HCA were 48%and 53%less than those of the OCA,respectively.After modification with KH550,the Marshall stability ratio,tensile strength ratio,and flexural strain of the HCA-prepared LCAM increased by 12.92%,25.06%,and 23.90%,respectively.However,the rutting resistance of the HCA-prepared LCAM was 14.3%less than that of the OCA-prepared LCAM.The comprehensive performances of the HCA and HCA-prepared LCAM were 49.2%and 10.3%greater than those of the OCA and OCA-prepared LCAM,respectively,indicating a high application value in the future.展开更多
Aerogels have become a hot topic of research due to their extremely low density and special interconnected structure as well as their enzyme-like activity.The development of new multifunctional nano-enzyme aerogels wi...Aerogels have become a hot topic of research due to their extremely low density and special interconnected structure as well as their enzyme-like activity.The development of new multifunctional nano-enzyme aerogels with high activity and good stability is still a considerable challenge.In this paper,AuRu aerogels with peroxidase and oxidase activities were synthesized using a simple one-step method and successfully used to construct colorimetric sensors for the detection of Fe^(2+)and glucose based on their enzyme-like activities.Furthermore,we are fortunate to find that AuRu aerogels have good photothermal properties.This suggests that AuRu aerogels can be used not only for in vitro testing but also for promising applications such as disease treatment.展开更多
文摘Clear asphalt(CA)currently used in light-colored asphalt mixtures(LCAM)exhibits poor transparency and adhesion.Therefore,a highly transparent CA(HCA)modified using a silane coupling agent(KH550)was prepared.Furthermore,LCAM was prepared by mixing CA and limestone aggregates.The properties of the HCA and ordinary CA(OCA)were characterized using conventional asphalt tests,optical tests,pull-off tests,ultraviolet aging tests,dynamic shear rheometry,Fourier-transform infrared spectroscopy,differential scanning calorimetry,and scanning electron microscopy.Whereas Marshall,moisture resistance,wheel tracking,trabecular bending,and British pendulum tests were employed for the LCAM.The transmittance and spectral reflectance of the HCA were 123.30 and 3.74 times greater than those of the OCA,respectively.The complex modulus and viscosity-aging index of the HCA were 48%and 53%less than those of the OCA,respectively.After modification with KH550,the Marshall stability ratio,tensile strength ratio,and flexural strain of the HCA-prepared LCAM increased by 12.92%,25.06%,and 23.90%,respectively.However,the rutting resistance of the HCA-prepared LCAM was 14.3%less than that of the OCA-prepared LCAM.The comprehensive performances of the HCA and HCA-prepared LCAM were 49.2%and 10.3%greater than those of the OCA and OCA-prepared LCAM,respectively,indicating a high application value in the future.
基金the financial support from Sichuan Province Science and Technology Support Program(No.2020YFN0029)the One-Thousand-Talents Scheme in Sichuan Province,Scientific Start-up Research Fund of Chengdu University of Information Technology(No.KYTZ201714).
文摘Aerogels have become a hot topic of research due to their extremely low density and special interconnected structure as well as their enzyme-like activity.The development of new multifunctional nano-enzyme aerogels with high activity and good stability is still a considerable challenge.In this paper,AuRu aerogels with peroxidase and oxidase activities were synthesized using a simple one-step method and successfully used to construct colorimetric sensors for the detection of Fe^(2+)and glucose based on their enzyme-like activities.Furthermore,we are fortunate to find that AuRu aerogels have good photothermal properties.This suggests that AuRu aerogels can be used not only for in vitro testing but also for promising applications such as disease treatment.
