Article
Construction & Building Technology
Anwar Hosan, Faiz Uddin Ahmed Shaikh, Prabir Sarker, Farhad Aslani
Summary: This paper investigates the effect of adding nano calcium carbonate and nano silica on the interfacial transition zone of high volume slag and high volume slag-fly ash blended concretes. The results show that the addition of nano materials can improve the microstructure and mechanical properties of concrete, resulting in increased compressive strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Anwar Hosan, Faiz Uddin Ahmed Shaikh
Summary: The study demonstrated that the addition of 1% nano-CaCO3 greatly improved the compressive strengths and durability properties of high volume slag (HVS) and high volume slag-fly ash (HVS-FA) blended concretes. The inclusion of 1% NC not only enhanced compressive strengths, but also reduced water sorptivity, controlled volume of permeable voids, minimized drying shrinkage strain, and significantly improved resistance against chloride ion penetration. Furthermore, SEM and EDS analysis revealed a denser microstructure of paste and interfacial transition zone (ITZ) around aggregates in NC-modified concretes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Construction & Building Technology
Charith Herath, Chamila Gunasekara, David W. Law, Sujeeva Setunge
Summary: The study revealed that High-Volume Fly Ash (HVFA) concretes incorporating nano silica with 65% and 80% replacement of cement showed lower creep and shrinkage properties in the long term. Additionally, the compressive strength increased and shrinkage reduced during the total drying period, with HVFA-65 concrete displaying denser microstructure and stronger interfacial transition zone compared to HVFA-80.
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS
(2022)
Article
Construction & Building Technology
Liang Tian, Fangzheng Zhang, Juncheng Chen, Jinfeng Sun, Huajun Zhu
Summary: The present study investigates the influence of 2 wt% calcined sto & BULL;ber nano-SiO2 on the hydration properties of high volume fly ash system. The results show that the addition of 2 wt% calcined sto & BULL;ber nano-SiO2 effectively enhances cement hydration and improves the compressive strength of HVFA mortar.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jingjing Huang, Zhongkun Wang, Dongsheng Li, Gengying Li
Summary: This study investigates the sulfate resistance of high-volume fly ash/cement mortars and finds that the addition of nano-silica and polyvinyl alcohol fibers can effectively enhance the mechanical properties and resistance to sulfate attack.
Article
Construction & Building Technology
Congqi Luan, Yong Zhou, Yongyi Liu, Zunchao Ren, Jinbang Wang, Lianwang Yuan, Shuang Du, Zonghui Zhou, Yongbo Huang
Summary: The study investigated the impact of clinker mineral components and nanomaterials on the performance of cement composites. Results showed that the addition of nano-particles shortened setting time, enhanced strength, and optimized microstructure. Different nano-materials had varying effects on HCSC, with nano-SiO2 exhibiting pozzolanic activity, while nano-CaCO3 and nano-TiO2 promoted hydration via nucleation effects.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Chemical
Yanfeng Nie, Jinyan Shi, Zhihai He, Baifa Zhang, Yiming Peng, Jingzhou Lu
Summary: This study investigates the use of metakaolin as a modifier for high-volume fly ash (HVFA) concrete. It is found that incorporating an appropriate amount of metakaolin improves the mechanical properties and microstructure of HVFA concrete, reducing drying shrinkage and porosity. Furthermore, the inclusion of metakaolin helps reduce the carbon footprint and cost of HVFA concrete.
Article
Construction & Building Technology
Junliang Zhao, Kangning Song, Zhongkun Wang, Dongyan Wu
Summary: This paper studied the effects of nano-silica dioxide (NS) and steel fibers (SF) on the performance of high-volume fly ash cement mortar. The results showed that the combined addition of NS and SF significantly improved the flexural and compressive strength of the mortar, and reduced water absorption. Additionally, the hybrid addition of NS and SF enhanced the sulfate resistance of the mortar and refined its pore structure.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Charith Herath, Chamila Gunasekara, David W. Law, Sujeeva Setunge
Summary: The study found that different cement replacement levels and additives in HVFA concrete significantly influence the mechanical properties of concrete, with HVFA-65 concrete exhibiting higher compressive strength and flexural strength, and a denser microstructure with stronger bonding in the immature age, demonstrating better long-term mechanical performance.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Zemei Wu, Kamal H. Khayat, Caijun Shi, Bernardo F. Tutikian, Qing Chen
Summary: The unique physical and chemical properties of nano-particles can enhance the nature of cement-based materials at the micro-scale and nano-scale levels, leading to improved properties. Laboratory investigation shows that increasing the content of nano-SiO2 and nano-CaCO3 can increase the mechanical strength of ultra-high performance concrete (UHPC), but excessive use can result in increased air voids and capillary pores, hindering strength development.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Zhi-hai He, Xu-dong Han, Ze-di Zhang, Jin-yan Shi, Chao Han, Qiang Yuan, Jun Lu
Summary: The effects of zeolite powder (ZP) on the mechanical properties and volume stability of concrete were investigated in this study. The results showed that an appropriate amount of ZP (20%) effectively improved the volume deformation, reduced dry shrinkage and creep of the concrete. Furthermore, ZP also improved the compactness of the concrete and reduced concrete creep.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Zhiyuan Zhou, Massoud Sofi, Junli Liu, Shengping Li, Aocheng Zhong, Priyan Mendis
Summary: The study demonstrates that adding nano-CSH crystals in high volume fly ash concrete improves early age properties and enhances strength and setting time. Different ratios of nano-CSH crystals have significant impacts on concrete strength and microstructure. Additionally, nano-CSH crystals can reduce the environmental impact of concrete mixes.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Wensu Chen, Faiz Shaikh, Zhixing Li, Wenlong Ran, Hong Hao
Summary: This study focuses on the quasi-static and dynamic properties of High Volume Fly Ash (HVFA) concrete, with an emphasis on the effects of fly ash (FA) content and nano silica (NS) addition. The research shows that the addition of NS improves the performance of HVFA concrete, while higher FA content leads to more severe damage and reduced modulus of elasticity and energy absorption capacities. The findings suggest that NS modified HVFA concrete has the potential to replace normal concrete as a sustainable building material.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Multidisciplinary Sciences
Zhi-hang Wang, Er-lei Bai, Jin-yu Xu, Yu-hang Du, Jing-sai Zhu
Summary: This study investigated the effects of different nano-material doping on the static and dynamic properties of concrete. The results showed that doping with nano-CaCO3 increased both the strength and elastic modulus of concrete, while doping with nano-SiO2 decreased the strength but increased the elastic modulus. Under dynamic load, doping with nano-CaCO3 significantly improved the dynamic performance of concrete, while doping with nano-SiO2 decreased the dynamic performance. Furthermore, doping with nano-CaCO3 improved the compactness and pore structure of concrete.
SCIENTIFIC REPORTS
(2022)
Article
Construction & Building Technology
Salman Siddique, Hyeju Kim, Jeong Gook Jang
Summary: The study shows that incorporating CFBC fly ash and bottom ash in high-volume slag cement mortar can improve the performance and compressive strength of the mortar, reduce pore size and porosity, and lower water absorption, while exhibiting decreased resistance to chemical attack.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Ali Bahari, Aref Sadeghi-Nik, Faiz Uddin Ahmed Shaikh, Adel Sadeghi-Nik, Elena Cerro-Prada, Ebrahim Mirshafiei, Mandana Roodbari
Summary: The study results indicate that the increase in LSCO nanomaterial content reduces the workability of SCC mixes, but can increase compressive, flexural, and split tensile strengths at 2 wt%, followed by a decreasing trend. Microstructural analysis reveals that SCC mixes containing 2 wt% LSCO nanomaterials have a compact cement matrix microstructure.
STRUCTURAL CONCRETE
(2022)
Article
Construction & Building Technology
Md Nabi Newaz Khan, Md Manjur A. Elahi, Jhutan Chandra Kuri, Prabir Kumar Sarker, Faiz Uddin Ahmed Shaikh
Summary: This study examined the efficacy of waste glass cullet (WGC) as a substitute for natural fine aggregate in alkali-activated composites under acid exposure. The findings indicated that the damage caused by acid attack increased with an increase in the percentage of WGC. However, the acid resistance of mortars containing up to 50% WGC was found to be satisfactory.
ADVANCES IN CEMENT RESEARCH
(2023)
Article
Construction & Building Technology
S. M. Arifur Rahman, Aziz Hasan Mahmood, Faiz Uddin Ahmed Shaikh, Prabir Kumar Sarker
Summary: This study investigates the fresh state and hydration properties of 0-60% lithium slag blended cement pastes at a water-binder ratio of 0.47. The results show that a 40% lithium slag cement paste achieves high strength activity index, mini-slump flow, and hydration heat. However, at replacement levels above 40%, the properties of the cement paste significantly decrease. The mini-slump test is found to have the best correlation with the maximum shear viscosity of the cement paste.
MATERIALS AND STRUCTURES
(2023)
Article
Construction & Building Technology
Daniel Dynan, Faiz Shaikh, Sonya Derry, Wahidul K. Biswas
Summary: This paper reviews the technical and eco-efficiency performance issues in using glass waste as an aggregate in concrete production. The study includes a life cycle assessment and eco-efficiency review of a potentially sustainable alternative to traditional concrete. The use of geopolymer concrete with recycled glass aggregate as a non-cement based alternative shows potential in reducing emissions, but faces challenges in other environmental impact areas.
Article
Construction & Building Technology
Jhutan Chandra Kuri, Anwar Hosan, Faiz Uddin Ahmed Shaikh, Wahidul K. Biswas
Summary: A significant amount of waste glass is generated globally, and this study investigates the use of recycled glass as aggregates in concrete. The results show that the addition of recycled glass leads to a decrease in the compressive and tensile strengths of the concrete. However, the mechanical and durability properties of concrete with 10 to 20% glass aggregate are comparable to those of concrete with natural aggregates.
Article
Materials Science, Multidisciplinary
Faiz Uddin Ahmed Shaikh, Narwinder Singh Kahlon, Attiq Ur Rahman Dogar
Summary: This study evaluated the behavior of geopolymer composites reinforced with amorphous metallic fibres (AMF) at elevated temperatures to improve their tensile, flexural, and ductility properties. Four types of composites were prepared: cement, reinforced cement, geopolymer, and reinforced geopolymer composites. The composites were assessed for mass loss, cracking, compressive strength, and flexural strength at temperatures ranging from 200 to 800 degrees C. The results showed that geopolymer composites exhibited better performance than cement composites at elevated temperatures, with lower mass loss and surface cracking, and significantly higher residual compressive and flexural strength.
Article
Construction & Building Technology
K. Snehal, B. B. Das, Salim Barbhuiya
Summary: Confiscation of alkaline buffer in a blended cementitious system increases the risk of carbonation. It is crucial to understand the carbonation mechanism and kinetics of multi-blended cementitious systems in relation to microstructural properties. This study investigated the changes in the microstructure of binary, ternary, and quaternary blended cementitious mortar mixtures containing fly ash, ultra-fine fly ash, and nanosilica under accelerated carbonation. The results showed that the optimized multi-blended cementitious systems with nanosilica exhibited higher resistance to carbonation kinetics, while mixes without nanosilica experienced a reduction in bound water content and increased precipitation of calcium carbonate.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
S. M. Arifur Rahman, Aaron Dodd, Sanjida Khair, Faiz Uddin Ahamed Shaikh, Prabir Kumar Sarker, Anwar Hosan
Summary: In this study, lithium slag was investigated as an alternative cementitious material to reduce CO2 emissions in cement production. Chemical tests and microscopic assessments confirmed that lithium slag contains rich aluminosilicate minerals and exhibits pozzolanic activity. The optimal dosage of 40% lithium slag achieved a strength activity index of 93% in 28 days, with the formation of calcium aluminosilicate hydrates at 56 days.
CEMENT & CONCRETE COMPOSITES
(2023)
Review
Construction & Building Technology
Shiv Sai Trivedi, K. Snehal, B. B. Das, Salim Barbhuiya
Summary: There is a significant increase in global construction industry which has resulted in a huge amount of construction and demolition (C & D) waste. C & D waste, being the largest type of waste, needs to be effectively treated and utilized for sustainable development. Many useful and valuable materials are present in C & D waste, which can be reused as construction materials. However, processing and treatment of C & D waste face challenges due to the variable properties of materials and its bulky nature.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Construction & Building Technology
Salim Barbhuiya, Bibhuti Bhusan Das
Summary: This paper presents a comprehensive review of the application of molecular dynamics simulation in concrete research. The study provides an overview of the principles, applications, and types of molecular dynamics simulation, focusing on its role in enhancing the understanding of concrete properties. It critically examines existing research studies, explores simulation techniques and future directions, and discusses the potential impact of this approach on the sustainability of the construction industry.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Salim Barbhuiya, Bibhuti Bhusan Das
Summary: This review paper provides a comprehensive analysis of Life Cycle Assessment (LCA) methodologies applied to construction materials. It discusses the importance of LCA in the construction industry and provides an overview of LCA principles, phases, and key parameters specific to construction materials. The paper reviews LCA studies on various construction materials, explores recent advances in LCA for construction materials, and discusses challenges and future directions in LCA implementation for construction materials.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Review
Construction & Building Technology
Salim Barbhuiya, Bibhuti Bhusan Das
Summary: This review paper thoroughly assesses the diverse roles of water-soluble polymers in cementitious materials. It covers different types of polymers, their working mechanisms, and their influence on various properties of cementitious materials. The challenges and opportunities in implementing water-soluble polymers are also discussed, along with key findings and recommendations for practical applications and future research. Overall, this review provides invaluable insights for researchers and practitioners, highlighting the multifaceted functions of water-soluble polymers in cementitious materials.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Shiv Sai Trivedi, Debasis Sarangi, B. B. Das, Salim Barbhuiya
Summary: Due to the shortage of natural coarse aggregate, recycled aggregate (RA) made from crushed concrete debris has been widely used in the construction industry. This study investigates the effect of multi-stage processing, mechanical abrasion, and sodium silicate immersion on improving the quality of RA. Experimental results show that the two-stage treatment method can enhance the mechanical, microstructural, and durability performance of recycled aggregate concrete (RAC).
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Md Nabi Newaz Khan, Md Manjur A. Elahi, Jhutan Chandra Kuri, Prabir Kumar Sarker, Faiz Uddin Ahmed Shaikh
Summary: This study examined the efficacy of waste glass cullet as a substitute for natural fine aggregate and its acid resistance. The results showed that an increase in the percentage of waste glass cullet led to increased physical, mechanical, and microstructural damage, but mortars containing up to 50% waste glass cullet exhibited satisfactory acid resistance.
ADVANCES IN CEMENT RESEARCH
(2023)
Proceedings Paper
Architecture
Steve W. M. Supit, Priyono, Harry Sumajow
Summary: This paper investigates the effects of using plastic waste as partial replacement of coarse aggregate in pervious concrete. The experimental results show that adding plastic waste increases the compressive strength and continuous voids of the pervious concrete.
PROCEEDINGS OF 2021 4TH INTERNATIONAL CONFERENCE ON CIVIL ENGINEERING AND ARCHITECTURE
(2022)
