Article
Construction & Building Technology
Pengfei Bian, Meng Zhang, Qijun Yu, Binggen Zhan, Peng Gao, Binglin Guo, Yuyang Chen
Summary: This study investigates the relationship between pores and compressive strength of foamed concrete. The results show that changes in density and water-cement ratio affect porosity and pore size distribution, with lower densities and higher water-cement ratios leading to more larger-sized pores and wider and more nonuniform pore size distributions. Furthermore, the pore structure of lower-density foamed concrete is more susceptible to density and water-cement ratio, resulting in larger size pores. The type of foaming agent also has a significant impact on pore size distribution. Smaller porosity and more concentrated and uniform pore size distribution are found to be beneficial for strength. A new empirical model is proposed to relate porosity, size distribution, and compressive strength.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Muhammad Sadiq, Amir Naveed, Muhammad Arif, Saima Hassan, Shaista Afridi, Muhammad Asif, Sabeeh Sultana, Noor-ul Amin, Mohammad Younas, Muhammad Naeem Khan, Heqing Jiang, Saeed Gul
Summary: Geopolymeric membranes offer a cost-effective alternative to conventional ceramic membranes, with lower energy consumption and cost savings. Despite facing some challenges during the preparation process, this technology shows great potential for improving membrane synthesis and application.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Construction & Building Technology
Song Jin, Jikai Zhou, Xiyao Zhao, Lu Sun
Summary: Cementitious materials have a complex pore structure, with microscale pores having a significant impact on material strength. The influence function shows that the effect of pores on strength increases with pore size, particularly at larger sizes. Microscale pores should be avoided to improve material strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Yifan Zhou, Jianxin Lu, Jiangshan Li, Chris Cheeseman, Chi Sun Poon
Summary: Traditional disposal methods for dredged marine sediment are costly and damaging to the environment. Reusing marine sediment for construction materials through the process of stabilisation/solidification (S/S) is a promising alternative. This study evaluated the potential of using incineration sewage sludge ash (SSA) as the main binder with lime for S/S in seawater, and found that seawater can accelerate the strength development of the lime-SSA binder. The presence of Friedel's salts in seawater pastes and their impact on the strength development of different binder mixes was also discussed.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Biomedical
Ade Indra, Rivaldo Razi, Riri Jasmayeti, Alfi Fauzan, Didi Wahyudi, Nofriady Handra, Adi Subardi, Iwan Susanto, Iswandi, M. Jalu Purnomo
Summary: In this study, PMMA-based scaffolds were produced using the granule casting method. The cold-cutting method was applied to reduce the PMMA granule size, and the best results were achieved at temperatures of 3.5 degrees C, 0 degrees C, and -8.3 degrees C. The M80-100 PMMA scaffold treated at a sintering temperature of 130 degrees C showed the highest compressive strength, porosity, and pore size distribution.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Construction & Building Technology
Kerstin Elert, Ruben Alabarce Alaminos, Cristina Benavides-Reyes, Miguel Burgos-Ruiz
Summary: Despite the extensive use of gypsum-lime plasters and renders worldwide, there is a lack of systematic studies on the effect of lime content on their properties. Our study found that even small lime additions reduced strength but compatible conservation materials can be designed. Lime additions also significantly improved weathering resistance, enabling wider use of gypsum-lime plasters as a more sustainable alternative to current building materials.
CEMENT & CONCRETE COMPOSITES
(2023)
Review
Construction & Building Technology
Jie Li, Jun Xia, Luigi Di Sarno, Guobin Gong
Summary: This review focuses on the manufacturing methods and performance optimization of fiber-reinforced pervious concrete (FPC), including mix design, mixing procedures, compaction techniques, and curing methods. By analyzing the available research data, recommendations for optimizing fiber usage in PC are provided, and the effects of different fiber types on PC performance are summarized.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Ceramics
Jinzhu Zou, Huiwen Xiong, Yujuan Huang, Kechao Zhou, Dou Zhang
Summary: Porous zirconia with different porosity and pore architecture was prepared by adjusting the solid loading and binder concentration of the suspensions, and freezing rate using an ice-templating method. The compressive strength of the samples varied significantly with changes in porosity, as well as other process parameters.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Maria Dolores Sosa Lucio, Eun-Ji Oh, Jang-Hoon Ha, Jongman Lee, Hong-Joo Lee, In-Hyuck Song
Summary: This study discusses the manufacturing of porous ceramic granules using inexpensive silica source and a biopolymer cross-linked by ion exchange. The results showed that porous diatomite granules with high sphericity could be successfully obtained by optimizing the dispersion conditions. The manufacturing process also resulted in hierarchically porous diatomite granules with high sphericity, acceptable compressive strength, and porosity features, making them suitable for catalytic or adsorption applications.
APPLIED SCIENCES-BASEL
(2023)
Article
Construction & Building Technology
Kai Luo, Ke Peng, Jun Li, Zhongyuan Lu, Jun Jiang
Summary: Steel slag inhibits the early hydration of cement, but promotes hydration in hydraulic lime. With increased steel slag content, the hydration of hydraulic lime slows and the yield of hydration products decreases. The pore sizes of steel slag-hydraulic lime pastes are mainly distributed in the range of 100-4000 nm. Hydraulic lime with a steel slag content of 10% exhibits the highest peak heat release rate and improved compressive strength.
MATERIALS AND STRUCTURES
(2022)
Review
Construction & Building Technology
Jingli Wei, Zheng Chen, Jianhui Liu, Jinpeng Liang, Caijun Shi
Summary: Reasonable use of coral as concrete aggregate can solve raw material shortage in island engineering construction and reduce costs and energy consumption caused by marine transportation. However, the low compressive strength and high porosity of coral aggregates limit their application in island engineering construction.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Xiao Han, Jingjing Feng, Baomin Wang
Summary: The microscopic pore structure and compressive strength of fly ash-cement composite cementitious materials were measured at 20 degrees C and 60 degrees C using mercury intrusion porosimetry and compressive strength test. The fractal dimensions of each specimen were calculated and the relationship between fractal dimension and pore structure parameters were analyzed. A mathematical model was established to characterize the relationship between pore structure and compressive strength. The research results showed that the fractal dimension can directly reflect the relationship between compressive strength and pore structure.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
Maciej Zajac, Pawel Durdzinski, Zbigniew Giergiczny, Mohsen Ben Haha
Summary: The study investigated the hydration, porosity, and compressive strength of cements at varying water/cement and limestone/cement ratios. It was found that the available space influences the microstructure of the C-S-H phase and its mechanical properties.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Green & Sustainable Science & Technology
Abirami Manoharan, C. Umarani
Summary: Lime mortar has numerous benefits, such as being minimally processed and having a lower carbon footprint, as well as its carbon absorption properties. This research explores the strength and durability properties of lime, as well as the use of fermented additives to enhance traditional lime mortar. The experimental results indicate that the use of naturally fermented organic materials has made lime structures stronger, with stable components and a self-healing capacity.
Article
Construction & Building Technology
Md Ibrahim Mostazid, Yuya Sakai
Summary: This study investigates the effects of thermal treatment on the physical and hydration characteristics of waste concrete, and finds that a higher amount of slag can improve the properties of the compacted concrete. The results show that thermally treated compacts have sufficient hydration and good mechanical performance, making them viable materials for prefabricated nonstructural applications.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Carolina Martinez-Garcia, Belen Gonzalez-Fonteboa, Diego Carro-Lopez, Juan Luis Perez-Ordonez
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Construction & Building Technology
Carolina Martinez-Garcia, Belen Gonzalez-Fonteboa, Diego Carro-Lopez, Fernando Martinez-Abella
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Review
Construction & Building Technology
Roberto Rodriguez-Alvaro, Sindy Seara-Paz, Belen Gonzalez-Fonteboa, Fernando Martinez-Abella
Summary: This review presents the results of over 100 scientific publications on the performance of concrete with GCCP as a partial substitute for conventional aggregate. The effects of GCCP on workability, density, and mechanical and durability properties were analyzed, and recommendations for future research were provided. The most promising advanced application proposed is the use of GCCP as an internal curing water reservoir.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Carolina Martinez-Garcia, Belen Gonzalez-Fonteboa, Diego Carro-Lopez, Juan Luis Perez-Ordonez
Summary: The study focuses on an innovative sustainable building using mussel shells in various constructive elements, such as concrete strip footing, coating mortars, and insulation material. The results from laboratory tests and construction process helped improve solutions and develop a low energy consumption building. The building meets Passive House standard for energy efficient buildings with a primary energy consumption 28.3% lower than the standard value.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Belen Gonzalez-Fonteboa, Iris Gonzalez-Taboada, Diego Carro-Lopez, Fernando Martinez-Abella
Summary: The study found that the inclusion of recycled sand adversely affects the rheological behavior of mortars, which can be mitigated by longer mixing times and delayed addition of superplasticizer. Furthermore, a rheograph was developed to explain the expected changes in rheological behavior when recycled sand is incorporated, solid volume fraction is varied, and changes are made to the mixing procedure.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Sindy Seara-Paz, Belen Gonzalez-Fonteboa, Fernando Martinez-Abella, Javier Eiras-Lopez
Summary: This research analyzed the long-term deformations of reinforced concrete beams made of recycled coarse aggregates, using four different replacement ratios. The results showed that recycled coarse aggregates have an impact on concrete performance and structural design.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Gemma Rojo-Lopez, Belen Gonzalez-Fonteboa, Fernando Martinez-Abella, Iris Gonzalez-Taboada
Summary: This study analyzed the performance and hardened properties of self-compacting concrete with different binder compositions and materials. The results showed that substituting cement with limestone filler and metakaolin can improve the rheological properties of the concrete while affecting the strength and resistivity. Self-compacting concrete with ternary binders demonstrated the highest performance.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Gemma Rojo-Lopez, Belen Gonzalez-Fonteboa, Juan Luis Perez-Ordonez, Fernando Martinez-Abella
Summary: This study explores the use of genetic programming to predict the behavior of cement-based mixtures, focusing on the influence of quaternary binders. The results show that the equations obtained through the genetic programming technique have the best statistical indices. The parametric analysis reveals that changes in the binder composition can negatively affect the fresh behavior of mortar mixtures, particularly when the water content is low.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Adonay Pinto, Belen Gonzalez-Fonteboa, Sindy Seara-Paz, Fernando Martinez-Abella
Summary: The presence of cracks in concrete reduces its lifespan, and using bacteria for crack repair is a promising method. This study investigated the effects of calcium lactate, calcium nitrate, and yeast extract on cement pastes during early hydration. The results showed that calcium lactate increased the amount of ettringite and delayed the setting time, similar to the effects of yeast extract. Nitrate, on the other hand, accelerated the setting time.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gemma Rojo-Lopez, Belen Gonzalez-Fonteboa, Diego Carro-Lopez, Fernando Martinez-Abella
Summary: This study aimed to develop a rheometer prototype and define a procedure for adjusting the automated control of the fresh state of concrete. Through this study, the most suitable rheometer impeller arrangement and optimal rheological protocol configuration can be selected to achieve automated control of the homogeneity and behavior of fresh concrete, as well as real-time decision making.
APPLIED SCIENCES-BASEL
(2023)
Article
Construction & Building Technology
Ismail Bello, Belen Gonzalez-Fonteboa, George Wardeh, Fernando Martinez-Abella
Summary: This study aims to validate the use of digital image correlation (DIC) for characterizing concrete behavior under loading-unloading conditions. Through experimental tests and analytical modeling, the accuracy of DIC technique in tracking concrete strain evolution has been confirmed.
JOURNAL OF BUILDING ENGINEERING
(2023)
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)
