Article
Chemistry, Multidisciplinary
M. Stefanidou, V. Pachta, G. Konstantinidis
Summary: This study focuses on the exploitation of two secondary products (named D1S, D1C) derived from perlite elaboration in a Hellenic plant. These products have been used as pozzolans in the production of mortars and grouts. The results suggest that the partial or even total substitution of natural pozzolan by perlite secondary products can positively influence the physical and mechanical properties of the composites. D1S appears to be an alternative pozzolanic material leading to enhanced properties in mortars and grouts.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Architecture
Muhammed Bayram, Didem Oktay, Nabi Yuzer
Summary: This study aims to use Cappadocia waste earth (CWE) in the grout for consolidation and strengthening rock-cut structures, masonries and fairy chimneys located in Cappadocia region. The findings revealed that dosages of Cappadocia waste earth, different environmental temperatures, and constant shearing (time-dependent) have critical roles in determining the optimum requirements for injection.
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2023)
Article
Thermodynamics
Pavla Bauerova, Magdalena Kracik-Storkanova, Petra Macova, Pavel Reiterman, Eva Vejmelkova, Martin Keppert
Summary: This paper investigates the possibility of using thermal analysis to estimate the linseed oil content in historic mortar. By studying model mortar samples, a calculation method and mass spectroscopy analysis were proposed to determine the oil content, and it was found that the mass spectroscopy analysis method yielded the most accurate results.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Nanoscience & Nanotechnology
Levent Karacasulu, Ezgi Ogur, Cerem Piskin, Cekdar Vakifahmetoglu
Summary: The ordinary recycled soda lime glass powder was densified through cold sintering process with the aid of concentrated NaOH solution. Increasing processing time, temperature, and concentration of NaOH solution led to the formation of monolithic glass artifacts with higher relative densities. The highest densification (95.2%) was achieved when sintering was done at 250 degrees C for 20 minutes using 15 M NaOH solution.
SCRIPTA MATERIALIA
(2021)
Article
Agricultural Engineering
Zhicheng Xu, Chuanren Qi, Lanxia Zhang, Yu Ma, Guoxue Li, Long D. Nghiem, Wenhai Luo
Summary: This study found that lime addition during kitchen waste composting can promote bacterial growth and activity, improving composting effectiveness. The addition of lime at different stages has a significant impact on the composition and function of bacterial communities, thereby affecting gas emissions and nutrient transformations during composting.
BIORESOURCE TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Andreja Padovnik, Violeta Bokan-Bosiljkov
Summary: In the past, organic additives from plant and animal extracts were commonly used in lime mortar for property improvement, but they have been replaced by inorganic additives in modern times. This research investigates the influence of fish animal glue and filler particle size distribution on the fresh and hardened properties and durability of lime grouts. The results show that the particle size distribution of the selected filler and the W/B ratio significantly affect water retention and fluidity.
Article
Food Science & Technology
Jicheng Shu, Yongqin Yin, Zhijun Liu
Summary: This study presents an integrated approach for the complete utilization of pepper sauce waste (PSW), extracting valuable by-products and ingredients while minimizing environmental hazards. Through laboratory and pilot-scale extraction processes, various valuable by-products including hot red pepper oil, no-heat pepper residue, no-heat red pepper oil, capsaicinoids, and capsaicin were obtained. Optimal processing and isolation conditions were determined for maximum utilization of the waste materials.
Article
Chemistry, Physical
Suleyman Inan, Vipul Vilas Kusumkar, Michal Galambos, Eva Viglasova, Ol'ga Rosskopfova, Martin Dano
Summary: This study focused on the use of Turkish perlite for the sorptive removal of Ba-133 and Cs-137 from aqueous solution. The results showed that the maximum removal percentages for Ba-133 and Cs-137 were 88.2% and 78.7% at pH 6 and pH 9, respectively. Sorption equilibrium was achieved relatively rapidly and experimental data fit well with pseudo-second-order and intraparticle diffusion models. Turkish perlite demonstrated preferential sorption of Ba-133 over Cs-137.
Article
Construction & Building Technology
S. Divya Rani, Av Rahul, Manu Santhanam
Summary: The porosity of historic lime mortars significantly affects their mechanical characteristics and durability. Different techniques were used in this study to investigate the porosity of two types of historic lime mortars, and comparing the results from various analytical methods provided a better understanding of the pore system in historic mortars.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Food Science & Technology
Aurea K. Ramirez-Jimenez, Roberto Castro-Munoz
Summary: The production of nixtamalized products has increased in Latin American countries in recent years, bringing about significant chemical, nutritional, and quality changes in maize and its derived products. The primary by-product 'nejayote' is usually discarded into urban sewage with minimal treatment, but new emerging techniques and protocols have been implemented to improve processing. New valorization approaches and biotechnological developments have been developed to make use of nejayote's considerable biomolecule content.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2021)
Review
Green & Sustainable Science & Technology
Nikita Gupta, Rafat Siddique, Rafik Belarbi
Summary: This paper extensively reviews the properties of self-compacting concrete made with industrial by-products and highlights the benefits of incorporating these by-products for sustainable development. It discusses the physical and chemical properties of industrial by-products used in self-compacting concrete, as well as their effects on the fresh, strength, and durability properties of the concrete. The future scope of utilizing industrial by-products in self-compacting concrete is also addressed.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Juan F. Saldarriaga, Ximena Gaviria, Jorge M. Gene, Roberto Aguado
Summary: In this study, bituminous coal, sugar cane, untreated and pretreated hazardous waste ashes were tested as supplementary cement materials. The reactivity of these materials was analyzed, and it was found that sugarcane and untreated hazardous waste ashes are suitable for the production of construction supplies. The E-factor analysis showed that replacing fly ash contributes to the circular economy, reducing solid waste and improving environmental quality.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Construction & Building Technology
Sylwia Kucharczyk, Waldemar Pichor
Summary: The study evaluated the use of ground waste-expanded perlite (WP) as a sustainable replacement for ground granulated blast-furnace slag (GGBFS) in alkali-activated systems. The results showed that WP can be successfully used as a partial replacement for GGBFS, with activation by sodium carbonate being more beneficial in terms of compressive strength. The incorporation of WP into Na2CO3 activated systems resulted in a reduction in performance development, especially at early ages, and the presence of a sodium-rich C(-N)-S-H.
MATERIALS AND STRUCTURES
(2023)
Article
Construction & Building Technology
Omer Farooq, Hassan Bilal, Liborio Cavaleri, Alamgir Khan
Summary: The construction industry faces challenges in managing solid waste produced during the extraction and production of building materials. Slurry waste from granite and marble processing industries is a significant part of the total solid waste and its improper disposal causes environmental damage. This study investigates the feasibility of using nonbiodegradable waste as partial replacements in blended mortar mixes. The results show that the substitution of certain waste materials enhances the compressive strength and affects the hydration process in the mortar mix.
DEVELOPMENTS IN THE BUILT ENVIRONMENT
(2023)
Article
Construction & Building Technology
Su-Cadirci Tugce Busra, Ince Ceren, Calabria-Holley Juliana, Rajnish Kurchania, J. Ball Richard
Summary: The study highlights the significant impact of brick dust particle size distribution on the water transport kinetics and dewatering time of hydrated lime mortars. This control can help optimize mortar performance and provide an environmentally friendly alternative by utilizing waste brick dust.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Vasiliki Pachta, Sofia Triantafyllaki, Maria Stefanidou
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Architecture
Vasiliki Pachta, Ioanna Papayianni, Thomas Spyriliotis
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2020)
Article
Archaeology
Vasiliki Pachta, Chrysoula Serpezoudi, Maria Stefanidou
JOURNAL OF CULTURAL HERITAGE
(2020)
Article
Construction & Building Technology
Vasiliki Pachta, Eirini-Chrysanthi Tsardaka, Maria Stefanidou
Summary: This study evaluated the impact of various flame retardants as additives in cement mortars exposed to high temperatures, showing a positive role when the additives were combined. The combination of nano-clay with Al(OH)(3) or Mg(OH)(2) increased the resistance to flexure up to 1000 degrees C, with retained mass and volume loss. The beneficial role of adding Al(OH)(3) and Mg(OH)(2) in cement mortars exposed up to 600 degrees C was documented in the experimental results.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Vasiliki Pachta, Eleftherios K. Anastasiou
Summary: Research on industrial byproducts such as slags and fly ash in the building sector has been intense in recent decades, with a focus on producing cost effective and durable building materials. This study evaluated the impact of locally available byproducts on the resistance of materials to fire and elevated temperatures, finding that certain byproducts can enhance the overall performance of mortars.
Article
Architecture
Vasiliki Pachta
Summary: Historic schools built at the end of the 19th and beginning of the 20th century in Greece were influenced by wider socio-economic changes. These schools were constructed following specific principles to meet functional and structural safety requirements. Although most of these buildings are currently used as elementary schools and well preserved, further assessment is needed to document and identify them as heritage structures.
JOURNAL OF ARCHITECTURE AND URBANISM
(2021)
Article
Green & Sustainable Science & Technology
Vasiliki Pachta, Vasiliki Giourou
Summary: Life Cycle Assessment was used to evaluate the environmental performance of two school buildings in Naoussa, Greece. The study found that despite similar operational characteristics, the buildings had different environmental impacts due to their varying service life and construction materials.
Article
Humanities, Multidisciplinary
Vasiliki Pachta, Ioannis Malachtaris, Vasiliki Terzi
Summary: This study aims to investigate the characteristics and significance of historic school buildings in the Municipality of Agia, Thessaly, central Greece. Through a detailed investigation of the old elementary school of Megalovrysso, the historical, architectural, and constructional features of these buildings were identified. The study highlights the importance of recognizing and assessing this unrecognized part of European built heritage.
Article
Humanities, Multidisciplinary
Vasiliki Pachta
Summary: This study found that reducing the water content increased the flow and penetration time of lime-pozzolan grouts, significantly decreased volume changes, and greatly enhanced mechanical properties. Water content plays a fundamental role in the behavior of the mixtures.
Article
Humanities, Multidisciplinary
Vasiliki Pachta
Summary: The study found that adding glass additives to lime and natural pozzolan-based grouts can significantly enhance the mechanical properties and adhesion capability of the grouts.
Article
Construction & Building Technology
Vasiliki Pachta, Dimitrios Goulas
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Proceedings Paper
Architecture
Maria Stefanidou, Vasiliki Pachta
SUSTAINABILITY IN THE BUILT ENVIRONMENT FOR CLIMATE CHANGE MITIGATION (SBE19)
(2020)
Article
Construction & Building Technology
Vasiliki Pachta, Pinelopi Marinou, Maria Stefanidou
JOURNAL OF BUILDING ENGINEERING
(2018)
Article
Archaeology
Vasiliki Pachta, Maria Stefanidou
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2018)
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)
