Article
Construction & Building Technology
Mahmood Reza Keymanesh, Hassan Ziari, Hossein Zalnezhad, Mahdi Zalnezhad
Summary: The study aimed to investigate the feasibility of using steel slag instead of conventional filler materials to improve microsurfacing mixture performance, with results showing that the mixture containing 50% EAF steel slag performed the best. Additionally, mixtures with higher bitumen content showed better performance compared to the control mixture.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Hassan Ziari, Mojtaba Hajiloo
Summary: The balanced mix design (BMD) is an alternative method to determine the Optimum Binder Content (OBC) of asphalt mixtures that considers both volumetric and performance properties. Using this method for designing asphalt mixtures with high reclaimed asphalt pavement (RAP) materials needs further investigation. The study found that the Superpave Mix Design (SMD) method may not be suitable for designing mixtures containing high-RAP materials with and without recycling agents (RAs), and these mixtures should be designed using the BMD method. Additionally, the aromatic extract RA had the most influence on rutting performance and mixtures treated with this RA showed the best cracking resistance.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Feng Wang, Yue Xiao, Zongwu Chen, Peide Cui, Jian Liu, Ning Wang
Summary: This study investigated the relationship between filler morphology and pavement properties using morphological analysis and active adhesion test. Results show a close negative linear relationship between filler roundness and adhesion properties. It is recommended that the angularity of mineral filler should be less than 0.895 and the roundness should be less than 0.515 to ensure satisfactory active adhesion between aggregates and bitumen materials.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Hassan Ziari, Mahdi Zalnezhad, Mohammad Ali Ziari, Elaheh Nasiri Amiri
Summary: This study investigated the application of coal waste powder (CWP) in micro-surfacing mixtures and found that mixtures containing CWP improved the performance of micro-surfacing.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Environmental
Qi Wang, Jiankun Liu, Pengcheng Wang, Mingyuan Yu, Liyang Wang, Junkai Yao
Summary: The study investigated the effects of different SSA gradients on the expansion of cement-treated aggregates induced by sulfate attack, and found that the SSA increases as the aggregates refine, then decreases as the aggregates gather.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Saverio Olita, Donato Ciampa
Summary: This study investigates the reliability of mix design procedures for recycled asphalt concrete according to the European standard EN 13108, using the SuPerPave(R) Mixtures Expert Task Group guidelines. Experimental research ensures that the performance levels of the studied recycled asphalt mixtures are in compliance with European standards.
Article
Construction & Building Technology
K. V. N. Maheswara Raju, Vishnu Radhakrishnan, Venkaiah Chowdary
Summary: This study proposes a simple procedure to estimate the degree of recycled binder availability in recycled asphalt pavement (RAP) mix design. By comparing the optimum binder content of bituminous mixes prepared using different aggregate gradations and blending proportions, the availability of recycled binder in the mix can be determined. Results showed that the degree of binder availability varied depending on the stiffness of the RAP material and the mixing duration.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Xin-Yu Zhao, Ming-Yang Hong, Bo Wu
Summary: The objective of this study was to develop a machine learning model using the XGBoost algorithm to predict the compressive strength of self-compacting concrete with recycled aggregates (RASCC). The model achieved superior accuracy compared to a neural network-based model, and using the chemical composition of the binding materials as inputs improved its interpretability and accuracy. This study provides a plausible and beneficial tool for the efficient, cost-effective, and low-carbon design of RASCC.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Yining Zhang, Huailei Cheng, Lijun Sun
Summary: This study investigates the design of recycled hot mix asphalt (HMA) with higher reclaimed asphalt pavement (RAP) percentage by adjusting the number of design gyrations (N-des) in order to address cracking issues; the method effectively improves the low-temperature and fatigue properties of recycled HMAs, even at higher RAP percentage; with a decrease in N-des, the fracture energy and fatigue life of recycled HMAs can be increased.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Nishant Bhargava, Anjan Kumar Siddagangaiah, Teiborlang Lyngdoh Ryntathiang
Summary: This paper presents a comprehensive laboratory approach for microsurfacing mix design by investigating the effects of different components and chemical complexities. The study found that the type and dosage of filler and emulsion components greatly impact the mix performance, with certain combinations showing improved cohesion and resistance to rutting. The findings also suggested that the use of harder asphalt binder and solvent during emulsion production can help reduce rutting and improve overall performance.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Noman Khan, Fazli Karim, Qadir Bux Alias Imran Latif Qureshi, Sameer Ahmad Mufti, Muhammad Babar Ali Rabbani, Muhammad Siyab Khan, Diyar Khan
Summary: The study examines the effects of locally accessible fine aggregate and mineral filler materials on the interlocking properties of asphalt mixtures, rutting resistance, and environmental pollution control. The results show that using cinders, stone dust, natural sand, and surkhi as fine aggregates and fillers results in a diminishing tendency in interlocking properties, with surkhi having the highest rut resistance and stone dust having the lowest rut resistance.
Article
Materials Science, Multidisciplinary
Volodymyr Gunka, Volodymyr Hidei, Iurii Sidun, Yuriy Demchuk, Vitalii Stadnik, Pavlo Shapoval, Khrystyna Sobol, Nataliya Vytrykush, Michael Bratychak
Summary: The study proposes using wastepaper sludge ash and acid tar as alternative materials for building construction, instead of burying or incinerating them. The compositions of wastepaper sludge ash and limestone mineral powder were compared, and the wetting properties of the materials were evaluated. The physical and mechanical properties of stone mastic asphalt samples with different filler aggregates were investigated. It was found that wastepaper sludge ash can be used as a filler aggregate in stone mastic asphalt, and activating it with acid tar improves the characteristics of the asphalt.
Article
Green & Sustainable Science & Technology
Zhongshi Pei, Junyan Yi, Meng Xu, Xinman Ai, Jiwei Cao, Wei Hu, Libo Gao, Decheng Feng
Summary: The application of warm-mix technology and high reclaimed asphalt pavement (RAP) contents in asphalt mixture reduces energy resource use and waste material disposal. Developing specific warm-mix rejuvenators is vital to meet the performance requirements of warm-mix recycled asphalt mixture. Diffusion and crack-resistance properties, combined with engineering characteristics, are key factors for rejuvenator design. This research designs a new type of rejuvenator for warm-mix recycled asphalt mixture with high RAP contents, exploring molecular properties and conducting performance testing. The results indicate that the designed rejuvenator meets the requirements for provincial highways in most areas of China, providing environmental and economic benefits.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Maziar Mivehchi, Haifang Wen, Logan Cantrell
Summary: The issues associated with rutting and cracking in asphalt mixes require a balanced mix design and have attracted attention from researchers and practitioners. The use of recycled materials complicates asphalt mix performance, necessitating a systematic review of the effects of recycled materials and mix design parameters on mixes by contractors. Contractors need guidance to develop asphalt mixes meeting specifications for rutting and cracking tests.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Chao-Wei Tang, Chiu-Kuei Cheng, Lee-Woen Ean
Summary: This study investigated the mix design and performance of fiber-reinforced pervious concrete using lightweight coarse aggregates. Through experimental testing, it was concluded that optimal mix proportions and suitable materials are crucial for improving the mechanical properties of the LPC.
APPLIED SCIENCES-BASEL
(2022)