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Development and road performance of clear asphalt with high transparency and adhesion

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 238-255 doi: 10.1007/s11709-022-0898-x

Abstract: 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.

Keywords： light-colored asphalt pavement     orthogonal test     road performance     spectral reflectance     silane-coupling    

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Connection of the prefabricated updeck of road tunnels by a short lap-spliced joint using ultra-high-performance

Frontiers of Structural and Civil Engineering   Pages 870-883 doi: 10.1007/s11709-023-0977-7

Abstract: Prefabricated internal structures of road tunnels, consisting of precast elements and the connectionsconnected by welding-spliced or lap-spliced reinforcements embedded in normal concrete or ultra-high-performanceconnected by UHPFRC100 with short lap-spliced reinforcements can achieve almost equivalent mechanical performance

Keywords： UHPFRC     prefabricated updeck     road tunnel     lap-spliced rebars     flexural tests    

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Nondestructive Testing Method to Assess and Detect Road Performance

Guo Chengchao,Xu Pengfei and Zhong Yanhui

Strategic Study of CAE 2017, Volume 19, Issue 6,   Pages 72-79 doi: 10.15302/J-SSCAE-2017.06.011

Abstract: As such, it is essential to implement rapid and effective management measures to ensure road safety,In this paper, five nondestructive road testing methods and their associated testing equipment are introducedwithout traffic closures, likely provide a new approach for establishing a high-efficiency intelligent roadnetwork monitoring system, and will provide a practical and feasible method for sustainable road development

Keywords： road detection     road defects     nondestructive testing    

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An investigation on modification mechanism of CH

Qiang XIN, Shanghong HUANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 293-300 doi: 10.1007/s11709-017-0403-0

Abstract: To make the low temperature coal be applicable for road constructions, the formaldehyde is used as crossThe road performance (softening point, penetration and ductility) of modified low temperature coal areResults shown that the road performance of modified low temperature coal is increased significantly.

Keywords： low temperature     coal tar pitch     modification     road performance    

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Service Performance Enhancement Technologies for BeiDou Navigation Satellite System along the Belt andRoad

Zhou Jianhua, Chen Junping, Zhang Jingyu

Strategic Study of CAE 2019, Volume 21, Issue 4,   Pages 69-75 doi: 10.15302/J-SSCAE-2019.04.005

Abstract: globalization of the BeiDou Navigation Satellite System (BDS), this paper first analyzes the service performanceaugmentation and short-message services, two characteristic services of the BDS, along the Belt and RoadBy establishing over a dozen of monitoring stations in countries along the Belt and Road, demands ofdeveloping an oversea short-message service system, a short-message communication service, with better performanceand experience, can be provided for massive BDS users along the Belt and Road.

Keywords： satellite navigation，BeiDou Navigation Satellite System (BDS)，the Belt and Road，application and promotion    

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Performance-based Fire Protection Designs and Analyses for Occupant Evacuations in Super-long Road Tunnels

Chen Changkun,Xu Zhisheng

Strategic Study of CAE 2007, Volume 9, Issue 9,   Pages 78-83

Abstract: text-align: justify;">In this paper,  the evacuation characteristics of occupants in super- long road And the performance-based fire protection designs for occupant evacuations in super-long tunnels The investigation for the performance- based fire protection designs for the occupant evacuationsin super-long road tunnels could provide the valuable references for the optimization designing of thesafety evacuation establishments for the road tunnels.

Keywords： evacuation     fire     super-long tunnel     transverse passageway     performance- based fire protection design    

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Characteristics and application of road absorbing solar energy

Zhihua ZHOU, Shan HU, Xiaoyan ZHANG, Jian ZUO

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 525-534 doi: 10.1007/s11708-013-0278-2

Abstract: If the heat of road surface can be stored in summer, the road surface temperature will be decreased toA road-solar energy system was built in this study, and the heat transfer mechanism and effect of thesystem were analyzed according to the monitored solar radiant heat, the solar energy absorbed by roadThe temperature of the solar road surface was 3°C–6°C lower than that of the ordinary road surface.road.

Keywords： solar energy     road-solar energy system     road surface temperature     solar absorptivity of road surface     solar    

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The development and application of the new type high-viscosity modified asphalt

Yang Linjiang

Strategic Study of CAE 2008, Volume 10, Issue 12,   Pages 92-96

Abstract:

According to the technical requirements of Hangzhou Bay Bridge deck pavement for high-viscosity modified asphalt, a new type of high-viscosity modified asphalt was developed. By analyzing the base asphalt, SBS, the infrared spectra of chemical additives, on the basis of studying the microstructure changing laws of modified asphalt in modifying process, it is proposed to use the modified asphalt compatible design, which is SBS plus chemical reaction agent tackifier TW-1 and compatibilizer TW-2, so that the low-temperature ductility and elastic resilience of the modified asphalt are improved, at the same time, the dynamic viscosity of 60 ℃ is greatly enhanced, and the construction will not be affected. The high-viscosity modified asphalt has been successfully applied to Hangzhou Bay Bridge project.

Keywords： Hangzhou Bay Bridge     high-viscosity modified asphalt     compatibility mechanism     infrared spectroscopy     roadperformance     construction performance    

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Special issue: Management of road and railway traffic and transportation engineering

Yongfu SUN, Ziyou GAO

Frontiers of Engineering Management 2017, Volume 4, Issue 4,   Pages 385-387 doi: 10.15302/J-FEM-2017110

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Rational Understanding about Renaissance Path of China's Road and Bridge Engineering

Mao-run Feng,Zheng-song Zhao

Frontiers of Engineering Management 2014, Volume 1, Issue 1,   Pages 42-51 doi: 10.15302/J-FEM-2014013

Abstract: At the turn of this century, China began the largest road and bridge development in the world, whichSurveying the development of world transportation, and comparing the road and bridge construction effortsaction to build up a transportation network; demand and innovation are the driving forces to upgrade roadefficiency, expose all construction practices that violate scientific law, overall management defects in road

Keywords： road network     expressway     bridge project     technological innovation     construction management     social management    

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Quantification of emission variability for off-road equipment in China based on real-world measurements

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1455-x

Abstract:

• Emissions from 53 in-use diesel-fueled off-road equipment were measured

Keywords： Off-road equipment     Portable emission measurement system (PEMS)     Real-world emissions     Diesel engine    

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“Heavenly Road”: The Qinghai–Tibet Railway

Yongfu SUN

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 304-307 doi: 10.1007/s42524-019-0079-3

Abstract: Xiaobo WANG. [J]. Front. Eng, 2019, 6(1): 131-137.Peter REDFERN, Hua ZHONG. [J]. Front. Eng, 2017, 4(2): 193-200.Qixiang FAN. [J]. Front. Eng, 2017, 4(2): 231-237.Ming-zhou Liu,Cong-hu Liu,Mao-gen Ge,Yuan Zhang,Qing-hua Zhu. [J]. Front. Eng, 2016, 3(2): 144-146.Yu Zhao,Sheng-quan Wang,Ke-chao Zhu. [J]. Front. Eng, 2015, 2(1): 35-38.Ru-gui Chen,Jia-meng Chen. [J]. Front. Eng, 2014, 1(1): 52-61.An Wang. [J]. Front. Eng, 2014, 1(1): 13-17.

Keywords： permafrost protection     sustainable development     health guarantee system    

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Impacts of opening baffle of city road tunnels on natural ventilation performance

Weixiao YANG, Jincheng XING, Jianxing LI, Jihong LING, Haixian HAO, Zhiqiang YAN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 55-61 doi: 10.1007/s11709-013-0194-x

Abstract: Based on the opening baffle mode for natural ventilation of city road tunnels, this paper studies theimpacts of opening baffle on natural ventilation performance by verifying numerical simulation throughthe impacts of installation angle, dimension, location, and quantity of opening baffle on ventilation performancewhen the length of the baffle is equal to the width of the city road tunnels. 3) Baffle exhaust couldincrease by 30% when it is installed in the downstream of openings. 4) The performance of a single baffle

Keywords： city road tunnel     numerical simulation     baffle     top opening     natural ventilation    

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Green Road Construction Technologies in Guangzhou

Guan-feng An,Wen-yuan Huang,Jing-feng Zhang

Frontiers of Engineering Management 2016, Volume 3, Issue 1,   Pages 80-86 doi: 10.15302/J-FEM-2016002

Abstract: Total road pavement in Guangzhou reaches 77 ×10 m .Its huge maintenance and potential rehabilitation calls for a green road system.This paper presents a discussion, first about green road construction technologies together with theirwarm mix asphalt; and then, about the key obstacles for promotion and activities, primarily for green roaddevelopment expectation from an industrial viewpoint, this paper creates a development trend of green road

Keywords： road     green construction     recycling of waste asphalt     rubber asphalt    

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Study on factor of guss asphalt mixture performance

Wang Hongchang,Li Guofen,Zhang Dengjing

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 70-74

Abstract: In this paper, Factors impacted on Gussasphalt mixture performance are systematic studied by four typeThe road performance was verified by high temperature rutting test and low temperature bending test.The study shows that gradation and asphalt content have a great influence on the performance of mixture

Keywords： road engineering     steel deck pavement     guss asphalt concrete     fluidity     penetration     rutting    

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Title Author Date Type Operation

Development and road performance of clear asphalt with high transparency and adhesion

Journal Article

Connection of the prefabricated updeck of road tunnels by a short lap-spliced joint using ultra-high-performance

Journal Article

Nondestructive Testing Method to Assess and Detect Road Performance

Guo Chengchao,Xu Pengfei and Zhong Yanhui

Journal Article

An investigation on modification mechanism of CH

Qiang XIN, Shanghong HUANG

Journal Article

Service Performance Enhancement Technologies for BeiDou Navigation Satellite System along the Belt andRoad

Zhou Jianhua, Chen Junping, Zhang Jingyu

Journal Article

Performance-based Fire Protection Designs and Analyses for Occupant Evacuations in Super-long Road Tunnels

Chen Changkun,Xu Zhisheng

Journal Article

Characteristics and application of road absorbing solar energy

Zhihua ZHOU, Shan HU, Xiaoyan ZHANG, Jian ZUO

Journal Article

The development and application of the new type high-viscosity modified asphalt

Yang Linjiang

Journal Article

Special issue: Management of road and railway traffic and transportation engineering

Yongfu SUN, Ziyou GAO

Journal Article

Rational Understanding about Renaissance Path of China's Road and Bridge Engineering

Mao-run Feng,Zheng-song Zhao

Journal Article

Quantification of emission variability for off-road equipment in China based on real-world measurements

Journal Article

“Heavenly Road”: The Qinghai–Tibet Railway

Yongfu SUN

Journal Article

Impacts of opening baffle of city road tunnels on natural ventilation performance

Weixiao YANG, Jincheng XING, Jianxing LI, Jihong LING, Haixian HAO, Zhiqiang YAN

Journal Article

Green Road Construction Technologies in Guangzhou

Guan-feng An,Wen-yuan Huang,Jing-feng Zhang

Journal Article

Study on factor of guss asphalt mixture performance

Wang Hongchang,Li Guofen,Zhang Dengjing

Journal Article