Article
Construction & Building Technology
Van Phuc Le
Summary: This paper evaluates the performance characteristics of asphalt binder modified with sugarcane waste molasses in AC mixtures, finding that SWM modified binder can significantly improve rutting resistance and moisture damage resistance. An optimum SWM content of 10% by base asphalt weight is recommended for use as an alternative to base binder in Hot Mix Asphalt.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Construction & Building Technology
Haobai Zhong, Weidong Huang, Chuanqi Yan, Yuan Zhang, Quan Lv, Lijun Sun, Liyuan Liu
Summary: Hot in-place recycling (HIR) is an effective way to reuse reclaimed asphalt pavement (RAP) by heating the pavement at a high temperature. However, the high heating temperature may cause significant aging on the SBS modified asphalt used in the pavement. This study aims to understand the aging behavior of SBS modified asphalt in HIR projects and provides guidance for future projects.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Yu Yan, Hao Zhang, Michael Bekoe, Cassady Allen, Jianing Zhou, Reynaldo Roque
Summary: This study aimed to design and evaluate asphalt mixtures with different binders, aggregate types, and gradation characteristics. The results showed that mixtures with modified binders exhibited higher failure limits and lower damage rates, while limestone mixtures demonstrated lower damage rates. Additionally, the characteristics of the fine portion of the mixtures played a pivotal role in the cracking performance of the mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Xinyu Hu, Xiaowei Wang, Nanxiang Zheng, Qiang Li, Jinyue Shi
Summary: This study investigates the moisture damage evolution and durability damage evolution of porous asphalt mixtures, finding that moisture significantly influences fatigue life and results in more severe damage under wet conditions. Damage factors based on indirect tensile strength and resilience modulus are proposed to predict the loading history of porous asphalt mixtures.
Article
Green & Sustainable Science & Technology
Wei Jiang, Dongdong Yuan, Chengwei Xing, Bowen Zhang, Jingjing Xiao, Teng Wang, Wangjie Wu
Summary: This paper investigates the potential of epoxy asphalt binder in road material. The study includes the preparation and evaluation of hot-mix and warm-mix epoxy asphalt binders, as well as the design and comparison of various porous asphalt concretes. The results show that epoxy asphalt binder has the ability to enhance road performance.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Nathanyawat Sedthayutthaphong, Peerapong Jitsangiam, Hamid Nikraz, Suriyavut Pra-ai, Sarintip Tantanee, Korakod Nusit
Summary: The study investigated the effects of aged asphalt and aged aggregates on the skid resistance of recycled hot mix asphalt, finding that the aggregate gradations controlled the characteristics of the final skid resistance.
Article
Construction & Building Technology
Yujia Lu, Renan Santos Maia, Ramez Hajj
Summary: This study evaluated the influence of rejuvenation on different proportions of aged and unaged asphalt binder, as well as the optimal dosing method for rejuvenators. The findings showed that the rejuvenated recycled material generally performs better, and the mechanisms of rejuvenation differ at the laboratory and mixture scales.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jian Zhou, Jing Li, Guoqiang Liu, Tao Yang, Yongli Zhao
Summary: The study compares the performance of TLA, virgin asphalt binder, and aged asphalt binder, and explores the modification mechanism of TLA on both virgin and aged asphalt. The results show that using hard asphalt binder to recycle aged asphalt and increase RAP content in RHMA is feasible.
APPLIED SCIENCES-BASEL
(2021)
Article
Construction & Building Technology
Mohammad Ali Ziari, Pouria Hajikarimi, Afarin Kheirati Kazerooni, Fereidoon Moghadas Nejad, Elham H. Fini
Summary: This study examined the effect of PPA on asphalt's fracture properties and found that introducing up to 1% PPA enhances asphalt's resistance to fracture, while excessive PPA weakens it. The results revealed changes in both bulk and interface properties in asphalt composites due to PPA, which in turn altered asphalt fracture properties.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Abhishek Savarnya, Nikhil Saboo, Animesh Das, Michalina Makowska, Terhi Pellinen
Summary: Recycling agents are widely used in the asphalt recycling process to create a ternary binder blend. Limited literature is available on predicting the physical properties of this blend, leading to the objective of this research to explore a suitable ternary mixing formula based on empirical observations in the laboratory. The study aims to develop a generalized equation for predicting complex viscosity at any given temperature and frequency for the ternary binder mix in hot asphalt recycling.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Review
Construction & Building Technology
Yu Yan, David Hernando, Bongsuk Park, Cassady Allen, Reynaldo Roque
Summary: This study evaluated the performance of different types of asphalt binders using LAS and BFE tests, finding that the PSE failure criterion is more suitable for capturing the performance improvement of modified binders. The BFE test showed effective distinction between unmodified and modified binders.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Xiaowei Wang, Jiaxing Ren, Xinyu Hu, Qiang Li, Xiaoping Ji
Summary: The aim of this study is to develop a meso-scale finite element modeling considering the random inhomogeneous distribution of binder to investigate the adhesive/cohesive failure behaviors of porous asphalt mixtures (PAC). The study found that the adhesive/cohesive strength of the binder increased with its thickness, and the random inhomogeneous distribution of the binder had a significant impact on the damage initiation and evolution of adhesive/cohesive failure behaviors of PAC.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Abdulrahman Hamid, Hassan Baaj, Mohab El-Hakim
Summary: Using geopolymer as a modifier for asphalt binders and mixtures has gained attention in recent decades. This study aimed to investigate the effect of geopolymer (GF) and styrene-butadiene-styrene (SBS) modifiers, as well as their combination, on the rheological properties and performance of asphalt binders. The findings showed that the additives reduced the temperature sensitivity of the binders and improved their fatigue resistance and tensile strength. The modified asphalt mixtures also exhibited enhanced resistance to cracking in dry and freeze-thaw conditions.
Article
Green & Sustainable Science & Technology
Zihao Chen, Henglong Zhang, Haihui Duan, Caijun Shi
Summary: Thermochromic asphalt materials can reduce mixing and compaction temperatures, increase optical reflectance, lower pavement temperature, decrease heat release to urban atmosphere, improve urban microclimate, and contribute to sustainable development through warm-mix asphalt technology.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Characterization & Testing
Yu Yan, David Hernando, Bongsuk Park, Gabriele Tabaldi, Reynaldo Roque
Summary: This study investigates the impact of aged binder distribution on the fracture tolerance of recycled asphalt mixtures. Results show that fracture energy density (FED) decreases with increasing reclaimed asphalt pavement (RAP) content. The study also finds that coarse RAP leads to better fracture tolerance compared to fine RAP.
JOURNAL OF TESTING AND EVALUATION
(2022)
Article
Engineering, Civil
Marco Pasetto, Andrea Baliello, Giovanni Giacomello, Emiliano Pasquini
Summary: Hot recycling of reclaimed asphalt pavement (RAP) from replacement of deteriorated asphalt pavements is a widely used technique that can bring clear economic and environmental benefits. This study evaluated the rheological properties of bituminous blends with high percentages of aged rejuvenated bitumen, showcasing the efficacy of rejuvenation of recycled binders containing very high amount of aged bitumen. Dynamic shear rheometer tests were conducted to compare the performance of recycled blend with virgin reference bitumen under various aging conditions.
JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING-ENGLISH EDITION
(2021)
Article
Construction & Building Technology
Martin Hugener, Di Wang, Augusto Cannone Falchetto, Laurent Porot, Patricia Kara De Maeijer, Marko Oreskovic, Margarida Sa-da-Costa, Hassan Tabatabaee, Edoardo Bocci, Atsushi Kawakami, Bernhard Hofko, Andrea Grilli, Emiliano Pasquini, Marco Pasetto, Huachun Zhai, Hilde Soenen, Wim Van den Bergh, Fabrizio Cardone, Alan Carter, Kamilla Vasconcelos, Xavier Carbonneau, Aurelie Lorserie, Goran Mladenovic, Tomas Koudelka, Pavel Coufalik, Runhua Zhang, Eshan Dave, Gabriele Tebaldi
Summary: This study, organised by the RILEM technical committee, evaluated the effect of asphalt recycling agent (ARA) on the binder properties of recycled asphalt mixture. The results highlighted the importance of using a dynamic shear rheometer to evaluate binder blends containing ARA. The study recommended restoring the original material properties while balancing high-temperature characteristics and cracking resistance.
MATERIALS AND STRUCTURES
(2022)
Article
Construction & Building Technology
Marjan Tusar, Muhammad Rafiq Kakar, Lily D. Poulikakos, Emiliano Pasquini, Andrea Baliello, Marco Pasetto, Laurent Porot, Di Wang, Augusto Cannone Falchetto, Davide Dalmazzo, Davide Lo Presti, Gaspare Giancontieri, Aikaterini Varveri, Rosa Veropalumbo, Nunzio Viscione, Kamilla Vasconcelos, Alan Carter
Summary: Inter-laboratory experiments were conducted to evaluate the impact of directly blending plastic waste into bitumen and to assess the properties of the blends using various testing methods. The experiments showed that the addition of plastic waste does not chemically alter the bitumen. The performance of the blends varied with temperature, with the bitumen and plastic waste behaving elastically at low temperatures and the bitumen becoming viscoelastic at higher temperatures. Furthermore, the blends with plastic waste exhibited better fatigue performance in terms of stress and fatigue life.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Correction
Construction & Building Technology
Martin Hugener, Di Wang, Augusto Cannone Falchetto, Laurent Porot, Patricia Kara De Maeijer, Marko Oreskovic, Margarida Sa-da-Costa, Hassan Tabatabaee, Edoardo Bocci, Atsushi Kawakami, Bernhard Hofko, Andrea Grilli, Emiliano Pasquini, Marco Pasetto, Huachun Zhai, Hilde Soenen, Wim van den Bergh, Fabrizio Cardone, Alan Carter, Kamilla Vasconcelos, Xavier Carbonneau, Aurelie Lorserie, Goran Mladenovic, Tomas Koudelka, Pavel Coufalik, Runhua Zhang, Eshan Dave, Gabriele Tebaldi
MATERIALS AND STRUCTURES
(2022)
Article
Construction & Building Technology
Ramon Botella, Davide Lo Presti, Kamilla Vasconcelos, Kinga Bernatowicz, Adriana H. Martinez, Rodrigo Miro, Luciano Specht, Edith Arambula Mercado, Gustavo Menegusso Pires, Emiliano Pasquini, Chibuike Ogbo, Francesco Preti, Marco Pasetto, Ana Jimenez del Barco Carrion, Antonio Roberto, Marko Oreskovic, Kranthi K. Kuna, Gurunath Guduru, Amy Epps Martin, Alan Carter, Gaspare Giancontieri, Ahmed Abed, Eshan Dave, Gabrielle Tebaldi
Summary: This paper describes the development of a novel computational framework that accurately predicts the degree of binder activity in a reclaimed asphalt pavement sample. Different machine learning techniques were applied to obtain precise data representation models.
MATERIALS AND STRUCTURES
(2022)
Article
Chemistry, Physical
Marco Pasetto, Andrea Baliello, Emiliano Pasquini, Lily Poulikakos
Summary: The circular use of resources, especially the use of waste plastics in asphalt materials, is gaining attention in pavement engineering. This study investigated the feasibility of recycling waste polyethylene (PE) into asphalt mixtures through dry addition of plastic shreds. The experimental findings show that the mixes prepared with the dry addition of plastic wastes were able to maintain similar workability and moisture resistance as the reference material, while improving stiffness and resistance to permanent deformation, especially with higher PE dosage.
Article
Green & Sustainable Science & Technology
Lily D. Poulikakos, Emiliano Pasquini, Marjan Tusar, David Hernando, Di Wang, Peter Mikhailenko, Marco Pasetto, Andrea Baliello, Augusto Cannone Falchetto, Miomir Miljkovic, Marko Oreskovic, Nunzio Viscione, Nikhil Saboo, Gabriel Orozco, Eric Lachance-Tremblay, Michel Vaillancourt, Muhammad Rafiq Kakar, Nicolas Bueche, Jan Stoop, Lacy Wouters, Davide Dalmazzo, Gustavo Pinheiro, Kamilla Vasconcelos, Fernando Moreno Navarro
Summary: This research investigated the performance of asphalt mixtures modified with polyethylene (PE) waste. The results showed that the PE modified mixtures had better compactability, higher stiffness, lower creep rate, and improved resistance to permanent deformation compared to the control mixtures. The wheel tracking tests also indicated similar or better results when 1.5% PE was added to the control mixture. The findings suggest that using PE as a performance-enhancing additive in asphalt pavements is a viable and environmentally friendly option.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Characterization & Testing
Marco Pasetto, Andrea Baliello, Giovanni Giacomello, Emiliano Pasquini
Summary: This study aimed to evaluate the feasibility and effectiveness of multiple hot recycling of reclaimed asphalt (RA), and to assess the impact of rejuvenator addition at different recycling stages on mixture performance. The experimental findings showed that the recycling effect tends to stabilize over cycles, but the final properties of the recycled mixes are influenced by the recycling history.
JOURNAL OF TESTING AND EVALUATION
(2023)
Article
Engineering, Environmental
Di Wang, Andrea Baliello, Lily Poulikakos, Kamilla Vasconcelos, Muhammad Rafiq Kakar, Gaspare Giancontieri, Emiliano Pasquini, Laurent Porot, Marjan Tusar, Chiara Riccardi, Marco Pasetto, Davide Lo Presti, Augusto Cannone Falchetto
Summary: Significant volumes of waste materials like plastics are generated annually worldwide, potentially impacting the environment. By using waste plastics as asphalt modifiers, paving material properties can be improved while reducing disposed waste. Plastic modifiers were found to increase complex shear modulus and softening point temperature of asphalt binder while decreasing penetration value.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Materials Science, Characterization & Testing
Di Wang, Andrea Baliello, Gustavo dos Santas Pinheiro, Lily D. Poulikakos, Marjan Tusar, Kamilla L. Vasconcelos, Muhammad Rafiq Kakar, Laurent Porot, Emiliano Pasquini, Gaspare Giancontieri, Chiara Riccardi, Marco Pasetto, Davide Lo Presti, Augusto Cannone Falchetto
Summary: This article investigates the effect of waste polyethylene (PE) on the rheological behavior of modified asphalt binders. Experimental tests were conducted using interlaboratory testing results. Statistical analysis is introduced to identify sensitive rheological parameters and determine thresholds. Results show that phase angle measured above 28 degrees C and 1.59 Hz can be used as a sensitive parameter to distinguish different rheological behaviors of PE modified binders.
JOURNAL OF TESTING AND EVALUATION
(2023)
Article
Chemistry, Physical
Marco Pasetto, Andrea Baliello, Giovanni Giacomello, Emiliano Pasquini
Summary: Solar harvesting systems applied to asphalt roads use pipes or coils installed below the surface to collect heat from solar irradiation and convert it into thermal gradients for electricity supply. The design of asphalt mixes is crucial, with attention needed to avoid deformable materials due to high in-service temperature rutting potential. This study investigates the anti-rutting potential of specific asphalt layers designed based on thermal properties, finding that improvements in mix constituents and properties are required to meet deformation acceptance criteria.
Article
Chemistry, Multidisciplinary
Marco Pasetto, Andrea Baliello, Giovanni Giacomello, Emiliano Pasquini
Summary: This study evaluates the rutting performance of asphalt mixtures using natural (limestone) or manufactured (steel slag) fine aggregates through laboratory experiments. The results show that the selected materials do not negatively affect rutting response.
APPLIED SCIENCES-BASEL
(2023)
Article
Green & Sustainable Science & Technology
Marco Pasetto, Andrea Baliello, Giovanni Giacomello, Emiliano Pasquini
Summary: This research aims to establish an advanced rheological protocol for characterizing clear synthetic binders and filling the existing knowledge gap. By using non-linear data, it was found that horizontal and vertical shift factors can be modeled through power law equations to obtain master curves. This method is considered suitable for depicting the rheological response of binders with complex behaviors.
Review
Green & Sustainable Science & Technology
Marco Pasetto, Andrea Baliello, Giovanni Giacomello, Emiliano Pasquini
Summary: Steel slag, a by-product of steel-making, can be used in asphalt pavements for recycling and environmental sustainability. This paper provides a state-of-the-art review on the use of slags in asphalt pavements, discussing controversial findings and analyzing the mechanical and durability properties of pavements containing different types of slags. While steel slag can contribute to high-performance pavement layers, there are still research gaps that need to be addressed, such as mix design guidelines and the influence of slag morphology on mix properties.
Article
Construction & Building Technology
Victor Revilla-Cuesta, Vanesa Ortega-Lopez, Marta Skaf, Emiliano Pasquini, Marco Pasetto
Summary: The use of electric arc furnace slag (EAFS) in concrete for rigid pavements has been validated, with metallic fibers increasing strength and elastic stiffness by 7-10%, and synthetic fibers slowing down the development of these properties. After five years of exposure to outdoor environments, all concrete mixes showed good performance, with minor cracking and surface chips detected.
Article
Materials Science, Characterization & Testing
Ayodya Udara Veediya Bandara Bulathsinhala, Udeni Gnanapriya Anuruddha Puswewala
Summary: Bentonite is commonly used as the drilling fluid for cast-in-situ bored pile constructions. It has been observed that the formation of bentonite filter cake significantly reduces the shaft resistance capacity of piles in sedimentary bed rocks. However, its impact on crystalline metamorphic rocks is relatively insignificant. The lack of reliable experimental data has resulted in conservative pile designs being used, but recent studies conducted in Sri Lanka suggest that unnecessary conservatism can be avoided.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Marthe Loiseau, Sylvain Chataigner, Romain Creachcadec, Emilie Lepretre, Jean-Philippe Court, Marie-Odette Quemere
Summary: Structural adhesive bonding has advantages over welding and riveting. However, creep is an important long-term phenomenon that needs to be considered. Experimental investigations at the scale of the adhesive layer are necessary. The Arcan test method was chosen for its advantages and a mechanical testing machine was developed to study the creep behavior of adhesive layers.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Dongyu Xu, Huaicheng Chen, Mei Cao, Yuli Cui, Junsheng Bai, Shoude Wang
Summary: Freezing and thawing behavior is crucial for the durability of engineering structures in cold regions. This study developed an acoustic emission (AE) sensor to evaluate the freezing-thawing characteristics of concrete. The results showed that freezing-thawing cycles increased the ring down count (RDC) and decreased the accumulative energy of the concrete.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Zhen Liu, Xingyu Gu, Qiao Dong
Summary: A method for predicting rutting in semi-rigid pavement structures was proposed using accelerated loading tests and finite element analysis. Dynamic modulus and creep tests were conducted on three pavement materials to obtain a prediction equation, which was then validated using the falling weight deflectometer test and back-calculation modulus. The results showed that rutting deformation varied under different conditions, highlighting the need for maintenance and repair of pavement structures.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Zhenpeng Yu, Qi Yang, Rui Tang, Furong Li
Summary: This study investigates the mechanical behaviors of hydraulic asphalt concrete (HAC) under combined compressive-shear stress at different temperatures and normal compressive stresses. The results show that the combination of normal compressive stress and temperature affects the peak shear stress and correlated shear strain. An increase in normal compressive stress leads to the emergence of horizontal cracks and an amplification of deformation at elevated temperatures. The peak shear stress progressively increases with an increase in normal compressive stress, but decreases with an increase in temperature. The study also establishes three modified compressive-shear failure criteria for HAC at different temperatures.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Yinshan Yu, Ding Ping, Jinsong Wei, Hui Zhang, Dongyang Zhang, Yudong Yang
Summary: This study investigates the quantitative analysis of mancozeb concentration in water quality detection using spectrophotometry. It is found that mancozeb concentration has a good linear correlation with total nitrogen and turbidity. Prediction models are established to detect the concentration of mancozeb using various parameters. The experimental results confirm the accuracy and effectiveness of the measurement method by comparing the analyzed mancozeb concentration with the actual value.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Zhengzhen Wang, Lei Huang, Guoliang Dai, Feng Li, Tianzhong Ma
Summary: The grouting effect of pile end and pile side combined post-grouting technology in cohesive soil was studied. It was found that the combined grouting significantly improved the load-bearing capacity of the piles, effectively controlled the settlement, and increased the pile end resistance and pile side friction.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Enlai Dong, Dingqiang Fan, Xianwei Ma, Peibo You
Summary: This paper summarizes the influencing factors, evaluation methods, and theoretical models of steel fiber dispersion in ultra-high-performance concrete (UHPC). It indicates that a scientifically designed mixture and adjustment of matrix rheological properties can improve fiber dispersion. In addition, flow induction and the wall effect can enhance the orientation of fibers and improve the performance of UHPC matrix.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Yan Luo, Kuibo Wang, Xiaobin Wu
Summary: This study systematically assesses the influence of internal structure on the outgassing property of alumina ceramics. The results show that denser alumina structure leads to lower outgassing rate, and the internal structure also has some influence on the outgassing characteristics of the material.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
R. Muralimohan, U. N. Kempaiah, G. B. Veeresh Kumar
Summary: This study focuses on the characteristics of hybrid metal matrix composites in terms of optical, physical, mechanical, tribological, and corrosion behavior. By reinforcing ADC12 alloy with rice husk ash and boron carbide, the researchers found that increasing the reinforcement content improves the physical and mechanical characteristics, while decreasing the elongation percentage. Moreover, the corrosion resistance of the composites also increases with higher reinforcement content, and composites with a higher percentage of reinforcement have superior wear resistance.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Zhihua Xue, Lan Wang, Chao Li, Le Zhang
Summary: This research focuses on styrene-butadiene-styrene-modified asphalt, and explores the significance of improving softening point test-related indicators through the improvement of testing methods and the combination with other tests, providing new ideas for asphalt performance evaluation.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Renhe Yang, Pengyu Zhang, Dongmei Wang, Qian Sun, Tingshu He
Summary: This study tested and evaluated the carbonation resistance of sprayed concrete mixed with different liquid accelerators and attempted to establish a prediction model for carbonation depth. The influence of different liquid accelerators on carbonation resistance was explored and the porosity, pore structure distribution, and strength properties were analyzed. The results showed that different liquid accelerators had varying effects on carbonation depth. Prediction models for carbonation depth were preliminarily established.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Zhen-Gang Feng, Xiaoran Gong, Xiangnan Li, Qi Cui, Dongdong Yao
Summary: This study investigates the effects of different polymer latex powders on high toughness concrete, and the results show that the addition of ethylene vinyl acetate and styrene butadiene can significantly improve the mechanical properties and durability of the concrete.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
A. Rajesh, A. Sumathi, D. Gowdhaman
Summary: This study explores the use of natural fibers and bacteria to improve the healing of concrete cracks. By examining the precipitation of calcium carbonate crystals produced by bacteria, the researchers find that the selected bacteria have the ability to heal cracks and improve the mechanical and durability properties of concrete. The results suggest that natural fibers can be used as sustainable carrier material for crack healing and strength improvement in concrete.
JOURNAL OF TESTING AND EVALUATION
(2024)
Article
Materials Science, Characterization & Testing
Ming-Hsiang Shih, Shih-Heng Tung, Wen-Pei Sung
Summary: This study proposes a new drilling method for stress measurement that incorporates rigid body displacement parameters to improve accuracy. Experimental results show a high degree of agreement in the identified images, indicating the reliability and accuracy of the stress measurement method.
JOURNAL OF TESTING AND EVALUATION
(2024)