Review
Construction & Building Technology
Keyu Chen, Dazhi Wu, Linling Xia, Qimao Cai, Zhenying Zhang
Summary: Geopolymer concrete, as a potential substitute for ordinary Portland cement (OPC), has shown better durability in aggressive environments compared to OPC concrete. Factors influencing durability and interactions in geopolymer concrete have been highlighted, along with suggestions for future studies on durability during life-cycle periods.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Polymer Science
Sarah Fernando, Chamila Gunasekara, Amin Shahpasandi, Kate Nguyen, Massoud Sofi, Sujeeva Setunge, Priyan Mendis, Md. Tareq Rahman
Summary: This review summarizes the research conducted so far on cement-based composites reinforced with waste paper-based cellulose fibres, focusing on their composition, mechanical properties, and durability characteristics. The properties of the raw materials significantly affect the formation of the cement composite binders. Silica and magnesium compounds have positive effects on the setting of the cement composite when combined with waste paper cellulose fibres. The dispersion of fibres in the matrix is crucial for developing composites with well-balanced mechanical properties using waste paper cellulose fibres. Water quantity plays a role in improving fibre dispersion, but higher porosity and voids affect the strength properties beyond an optimum water-to-cement ratio.
Article
Construction & Building Technology
Yue Li, Jianglin Liu, Caiyun Jin, Hui Lin, Jiale Shen
Summary: This study improves the electromagnetic transmission performance (ETP) of cement-based materials by adding carboxylated nanocrystalline cellulose (NCC), but it results in a decrease in compressive strength.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
R. Sri Bhanupratap Rathod, Pitabash Sahoo, Souradeep Gupta
Summary: This research aims to investigate the effects of micro-crystalline cellulose (MCC) as an additive in Portland cement-based (OPC) and sodium hydroxide slag-fly ash blend (AAM) in order to reduce shrinkage and improve mechanical and durability properties of constructions. The study found that adding 1% MCC mitigates strength loss and hydration of OPC-mortar when changing from sealed to dry curing conditions. For AAM, 0.25% MCC dosage offers optimal results, reducing porosity and slightly improving compressive strength. Addition of 1% MCC drastically reduces compressive strength in AAM. The study also shows that MCC has a substantial effect on shrinkage, significantly reducing it in both OPC-mortar and AAM.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Ricardo Cruz, Luis Correia, Aloys Dushimimana, Susana Cabral-Fonseca, Jose Sena-Cruz
Summary: The study investigated the durability and performance changes of structural epoxy adhesives and CFRP laminates under natural ageing conditions. Results showed that the glass transition temperature of epoxy adhesives increased over time while tensile properties decreased, and CFRP laminates were minimally affected by natural ageing environments. Accelerated ageing tests produced higher mechanical degradation compared to natural ageing.
Article
Humanities, Multidisciplinary
Edyta Malachowska, Marcin Dubowik, Piotr Boruszewski, Piotr Przybysz
Summary: Paper degradation can threaten the useful lifetime of books and manuscripts, but proper storage can extend their shelf life by hundreds of years. External factors affecting deterioration include temperature and humidity changes, with moisture having a greater impact on paper properties than temperature. This study aims to provide technical support for conservators and library staff on preserving paper cultural relics.
Review
Chemistry, Multidisciplinary
Victor A. Franco-Lujan, Fernando Montejo-Alvaro, Samuel Ramirez-Arellanes, Heriberto Cruz-Martinez, Dora I. Medina
Summary: This study reviews and analyzes the properties of fresh and hardened states of nanomaterial-reinforced Portland cement-based materials. The results show that the partial replacement of Portland cement by nanomaterials can increase their mechanical properties at early ages and significantly improve their durability. Long-term studies on the mechanical and durability properties of nanomaterial-reinforced cement materials are highly necessary due to the advantages of nanomaterials as partial replacements for Portland cement.
Article
Construction & Building Technology
Vineet Shah, Anuj Parashar, Allan Scott
Summary: This study examines the influence of different carbonate and non-carbonate sources on the performance of Portland metakaolin cement binder, showing that the additives have an impact on early strength but minimal effect on later compressive strength; the absence of carbonate ions may lead to the formation of stratlingite, speculated to contribute to later age strength development. No significant difference was observed in porosity, electrical resistivity, or carbonation resistance between binders containing carbonate or non-carbonate sources at later age.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Ehsan Negahban, Ali Bagheri, Jay Sanjayan
Summary: This study investigated the microstructural characteristics of geopolymer concrete and ordinary Portland cement concrete, revealing their correlation with strength and durability. The results showed that the pore volume of geopolymer concrete was significantly higher than that of ordinary Portland cement, and variations in parameters could control the mechanical properties and durability of the materials.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Chemistry, Physical
Guangxiang Ji, Hafiz Asad Ali, Keke Sun, Dongxing Xuan, Xiaoqin Peng, Jingjun Li
Summary: Blending OPC with CSA cement can adjust the properties of cement for specific applications. In this study, CSA cement was used as a shrinkage-compensating admixture to improve the hydration behavior and performance of OPC. The experimental results showed that incorporating CSA cement delayed the hydration process of C3S, shortened the induction periods of the blended cement, and improved the early compressive strength and drying shrinkage of the OPC.
Article
Green & Sustainable Science & Technology
Shuqing Yang, Chi Sun Poon, Hongzhi Cui
Summary: In this study, the effectiveness of lightweight aggregates in mitigating alkali-silica reaction (ASR) behaviors in alkali-activated slag cement (AAC) systems was explored. Alkali-reactive expanded perlite and non-alkali-reactive expanded shale were used as lightweight aggregates to compare the ASR behaviors in ordinary Portland cement (OPC) and AAC systems. The results showed that replacing expanded perlite with expanded shale effectively mitigated the ASR expansion in the AAC system.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Wiktor Szewczenko, Galyna Kotsay
Summary: The concept of introducing powdered materials with alkaline activity into cement compositions has been proposed, and the use of waste glass as an active additive to Portland cement has been evaluated. Replacing a portion of Portland cement with glass waste can maintain the alkaline activity of the cement composition at a level that meets standard requirements. The effects of mixed alkali in Portland cement in the presence of glass waste were described, showing a reduction in potassium alkaline activity when glass waste is introduced into cement compositions.
Article
Construction & Building Technology
Kamran M. Nemati, Jeff S. Uhlmeyer
Summary: This study presents a case study demonstrating the feasibility and effectiveness of rapid reconstruction at urban intersections. The results of the research indicate that with innovative construction techniques and traffic management principles, concrete pavements can be efficiently reconstructed with minimal user and traffic disruption.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Construction & Building Technology
Suhui Zhang, Qiuyi Li, Qiang Yuan, Shangfu Yang, Xiaodi Dai
Summary: This paper investigated the bonding performance between magnesium phosphate cement concrete (MPC) and ordinary portland cement concrete (OPC) with different roughness. The results showed a positive correlation between roughness and bonding performance, with the bonding interface categorized into two forms: MPC paste bonding to OPC paste, and MPC paste bonding to the aggregate.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Chemical
Jiling Liang, Han He, Jianwei Wei, Tingting Han, Wenwu Wang, Lu Wang, Jie Han, Lunqiu Zhang, Yan Zhang, Haiqiang Ma
Summary: The use of surplus sludge with ordinary Portland cement to create building materials was studied, revealing significant impacts on the unconfined compression strength of solidified blocks based on the ratio of liquid to solid, surplus sludge dosage, sodium silicate dosage, and fly ash proportion. The addition of sodium silicate and fly ash was found to improve the compression strength of the solidified blocks.
Article
Materials Science, Textiles
Tido Tiwa Stanislas, Josepha Foba Tendo, Emeso Beckley Ojo, Odette Fayen Ngasoh, Peter Azikiwe Onwualu, Ebenezer Njeugna, Holmer Savastano Junior
Summary: The aim of this study was to investigate the feasibility of producing cellulose pulp and nanofibrillated cellulose from prevalent plants in West and Central Africa, and to evaluate their suitability as reinforcing elements for composites. The results showed that raffia fibers and cassava bagasse have potential as suitable sources for micro/nanocellulose.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Textiles
Patricia Das Neves, Matheus Roberto Cabral, Valdemir Santos, Marcio Roberto Pinto Mafra, Holmer Savastano Junnior
Summary: This study aimed to evaluate the mechanical, physical, and morphological properties of bundle fibers extracted from curaua leaves in a cementitious matrix through mechanical testing and pullout testing. Results showed that curaua fibers have higher rupture resistance and Young's modulus, but exhibit low adhesion with the cementitious matrix.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Textiles
Samuel Charca, Carlos Tenazoa, Holmer Savastano Junior
Summary: This study demonstrates a clear relationship between true density and the three major constituents (cellulose, lignin, and extractives) in Stipa obtusa base fibers, with a fitting parameter R > 90%. The use of true density as an alternative method to determine chemical composition proves to be effective and efficient for predicting product quality.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Construction & Building Technology
Marylinda Santos de Franca, Bogdan Cazacliu, Thomas Kraenkel, Holmer Savastano Jr
Summary: Comparing the rheological properties of PVA-fiber reinforced mortars revealed that the use of the ball measuring system (BMS) was more effective in discriminating and quantifying the rheology, while the Vane system gave less consistent results. The yield stress of the mortar changed significantly with different superplasticizer contents, and mixing time also had an impact on the results.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Environmental Sciences
Joao Adriano Rossignolo, Afonso Jose Felicio Peres Duran, Cristiane Bueno, Jose Eduardo Martinelli Filho, Holmer Savastano, Fernando Gustavo Tonin
Summary: This study provides a comprehensive review of algal application in the civil construction sector, specifically focusing on the potential use of pelagic Sargassum spp. biomass and other algal species. The findings suggest that pelagic Sargassum spp. may have promising applications in construction materials, such as adobe and pavement. Other marine algae and sea grasses were also found to have potential uses in particleboards, polymeric and cemented composites, facades, roofs, and more.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Paper & Wood
Thiago Moreira Cruz, Adriano Reis Prazeres Mascarenhas, Mario Vanoli Scatolino, Douglas Lamounier Faria, Lays Camila Matos, Paulo Junio Duarte, Joao Moreira Neto, Lourival Marin Mendes, Gustavo Henrique Denzin Tonoli
Summary: The accumulation of petroleum polymers has negative impacts on biodiversity and the environment. The use of nanocellulose can enhance biodegradability and improve the physical-mechanical performance of materials. This study aimed to produce and characterize hybrid films made of bacterial cellulose and plant nanocellulose, and evaluate their properties.
NORDIC PULP & PAPER RESEARCH JOURNAL
(2022)
Article
Construction & Building Technology
Joabel Raabe, Danillo Wisky Silva, Claudio Henrique Soares Del Menezzi, Gustavo Henrique Denzin Tonoli
Summary: The study examined the impact of modified and unmodified cellulose pulp fibers on the properties of fiber-cement composites. Modified fibers showed improved compressive strength and reduced density, yet these properties decreased with higher fiber content.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Environmental Sciences
Mario Vanoli Scatolino, Lina Bufalino, Matheus Cordazzo Dias, Lourival Marin Mendes, Mateus Souza da Silva, Gustavo Henrique Denzin Tonoli, Tiago Marcolino de Souza, Francisco Tarcisio Alves Junior
Summary: By functionalizing cellulose nanofibrils (CNFs), films with potential for packaging can be produced, which have low permeability and high mechanical strength. Bio-based nanomaterials have the potential for applications in packaging, allowing efficient utilization of forest waste.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Matheus Cordazzo Dias, Mohamed Naceur Belgacem, Jaime Vilela De Resende, Maria Alice Martins, Renato Augusto Pereira Damasio, Gustavo Henrique Denzin Tonoli, Saulo Rocha Ferreira
Summary: Lignin-cellulose nanofibrils (LCNF) have attracted increasing interest due to their ability to maintain lignin in nanomaterial composition. This study demonstrates that a combined enzymatic pretreatment of laccase and endoglucanase can effectively improve the quality of LCNF and save energy.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Engineering, Chemical
Rachel Passos de Oliveira Santos, Junli Hao, Elisabete Frollini, Holmer Savastano Junior, Gregory C. Rutledge
Summary: Composite electrospun membranes of PAN with cellulose nanocrystals (CNCs) content of 5-20 wt% were prepared. The mechanical properties improved with increasing cellulose content, and all membranes showed filtration efficiency above 90%.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Materials Science, Paper & Wood
Adriano Reis Prazeres Mascarenhas, Mario Vanoli Scatolino, Allan de Amorim dos Santos, Lais Bruno Norcino, Paulo Junio Duarte, Rafael Rodolfo de Melo, Matheus Cordazzo Dias, Caik Elisio Tonelli de Faria, Maressa Carvalho Mendonca, Gustavo Henrique Denzin Tonoli
Summary: This study evaluated the influence of cellulose micro/nanofibrils (MFC/NFC) on the properties of hydroxypropyl methylcellulose (HPMC) films. The results showed that adding more than 50% MFC/NFC significantly improved the physical, barrier, and mechanical properties of the films, as well as reduced degradation in water.
NORDIC PULP & PAPER RESEARCH JOURNAL
(2022)
Article
Environmental Sciences
Lucas Oliveira Souza, Ingrid Alves Santos, Iasnaia Maria de Carvalho Tavares, Igor Carvalho Fontes Sampaio, Matheus Cordazzo Dias, Gustavo Henrique Denzin Tonoli, Elisangela Elena Nunes de Carvalho, Eduardo Valerio de Barros Vilas Boas, Muhammad Irfan, Muhammad Bilal, Julieta Rangel de Oliveira, Marcelo Franco
Summary: The objective of this study was to investigate the effect of adding nanocellulose gel from cocoa bean husk (NAC) on nanocellulose gels of Eucalyptus sp. and Pinus sp. The results showed that the addition of NAC improved the degradation, solubility, and biodegradability of the films, especially for Eucalyptus sp., suggesting the potential use of NAC in the formulation of biodegradable packaging.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Biochemistry & Molecular Biology
Matheus Cordazzo Dias, Uasmim Lira Zidanes, Caio Cesar Nemer Martins, Ana Lazara Matos de Oliveira, Renato Augusto Pereira Damasio, Jaime Vilela de Resende, Eduardo Valerio de Barros Vilas Boas, Mohamed Naceur Belgacem, Gustavo Henrique Denzin Tonoli, Saulo Rocha Ferreira
Summary: This study evaluates the properties of cellulose nanofibers (CNFs) with different hemicellulose contents and cellulose II polymorphs and finds a link between these polysaccharides and the properties of CNFs. The study observes a decrease in crystallinity and changes in the crystalline structure of cellulose in an alkaline environment, promoting the partial conversion of cellulose I to cellulose II and preventing CNFs production at high NaOH concentrations. Most treatments exhibit pseudoplastic fluid behavior, except for a specific NaOH treatment which shows Newtonian fluid behavior. The quality index of CNFs is highest for the TEMPO-oxidized sample, followed by the 5% NaOH-treated sample and the untreated sample, while the 10% NaOH treatments have the lowest quality indices.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Materials Science, Textiles
Maressa Mendonca, Matheus Cordazzo Dias, Caio Cesar Nemer Martins, Alisson Farley Soares Duraes, Renato Augusto Pereira Damasio, Gustavo Henrique Denzin Tonoli
Summary: This study evaluated the effects of different alkaline pretreatments on cellulose fibrillation. The results showed that less aggressive pretreatments can reduce energy consumption and facilitate the extraction of nanofibrils, while the hybrid pretreatment had inferior results.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Chemistry, Physical
Michelle S. Rodrigues, Jordi Paya, Lourdes Soriano, Jose Monzo, Maria Victoria Borrachero, Holmer Savastano, Antonio L. Beraldo
Summary: This study aims to evaluate the reactivity of sugarcane straw ashes (SCSA) burned under controlled conditions and analyze their application in blended cement and hydrated lime pastes. The results show that sugarcane straw ashes burned at specific temperatures can partially replace inorganic binders and have a positive impact on hydrated lime and cement pastes.
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
