Article
Construction & Building Technology
Omrane Benjeddou, Herda Yati Katman, Malek Jedidi, Nuha Mashaan
Summary: Self-compacting concrete (SCC) is characterized by high fluidity and different from ordinary concrete in composition and performance. Experimental tests showed that the compressive strength of SCC increases between 150 and 300 degrees C, but the flexural strength decreases at high temperatures. Additionally, the thermal conductivity of concrete decreases with increasing temperature.
Article
Chemistry, Physical
Aleksandra Kostrzanowska-Siedlarz, Jacek Golaszewski
Summary: This study presents universal statistical models for the design of self-compacting high-performance concrete (HPSCC) to achieve high strength. The models were developed through extensive statistical analysis using the multivariate selection of sidereal points. Additionally, the study determined the significance of the tested material factors on the compressive strength of the HPSCC through analysis of variance.
Article
Construction & Building Technology
Sherin Khadeeja Rahman, Riyadh Al-Ameri
Summary: The study introduces a novel self-compacting geopolymer concrete as a sustainable construction material, cured under ambient conditions, and exhibiting mechanical properties comparable to traditional concrete. The concrete utilizes a single alkali activator, with zero cement and superplasticizers.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Mohamed S. Saif, Ali S. Shanour, Gamal E. Abdelaziz, Hanaa I. Elsayad, Ibrahim G. Shaaban, Bassam A. Tayeh, Mahmoud S. Hammad
Summary: Ultra-High Strength Fibre Reinforced Self Compacting Concrete (UHSFRSCC) is in high demand for construction projects worldwide. This study addresses a gap in the literature by developing quaternary mixes with Portland cement, fillers, and fibers to achieve ultra high strength. The mixes, which meet European guidelines for SCC, surpassed previous reports with compressive strengths exceeding 115 MPa. Various experimental tests were conducted on the mixes, including studying their performance at elevated temperatures. The mix with 15% SF, 5% MK, 20% LS, and 34% QP exhibited the best performance.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Jawad Ahmad, Zhiguang Zhou
Summary: This research investigates sustainable options for self-compacting concrete (SCC) using waste glass (WG) as a substitute for cement and the addition of marble waste as a filler material. The study found that the substitution of WG increased the flowability and mechanical performance of SCC, with a maximum compressive strength achieved at 10% substitution of WG. However, higher percentages of WG (20%) decreased the compressive capacity of SCC. The study recommends additional research to improve tensile strength and avoid brittle failure of WG based SCC by adding fibers.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
A. De La Rosa, J. J. Ortega, G. Ruiz, J. L. Garcia Calvo, F. J. Rubiano Sanchez, A. Castillo
Summary: This study investigates the use of fatigue loads to activate the self-healing mechanism of concrete, contrary to the conventional belief that cyclic loads only cause damage. The experimental results show that fatigue loads can actually improve the strength of the material. Compression fatigue tests were conducted on fiber-reinforced concrete, and the runout specimens exhibited a mean increase of 23% in strength after enduring more than 165,000 cycles. Microstructure analyses confirmed the presence of new hydration products and a reduction in porosity, which explain the enhanced capacity of the concrete. Additionally, a unique relationship between strain rate and fatigue life was observed for each fatigue stress level.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Construction & Building Technology
Mouhcine Benaicha, Olivier Jalbaud, Adil Hafidi Alaoui, Yves Burtschell
Summary: Unlike ordinary concrete, self-compacting concrete (SCC) maintains fluidity during the flow process without reducing the strength of the material. In this study, the rheological and mechanical properties of SCC were examined by adding different percentages of air-entraining admixture (AEA). The results showed that as the AEA percentage increased, the air content and void ratio increased, while the density and plastic viscosity decreased.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Kasali Adebayo Mujedu, Mariyana Aida Ab-Kadir, Noor Nabilah Sarbini, Mohammad Ismail
Summary: The study investigated the impact of elevated temperatures on the compressive strength and microstructure of SCC produced with 15% replacement level of POFA. Results showed variation in compressive strength and microstructure at different temperature ranges. The research findings can be applied in high fire resistance structures and contribute to waste reduction from palm oil factories.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Ghasan Fahim Huseien, Abdul Rahman Mohd Sam, Rayed Alyousef
Summary: The study found that adding an appropriate amount of fly ash can improve the workability of self-compacting alkali-activated concrete, but it may also reduce the compressive strength and flexural strength of the concrete. Therefore, adding fly ash in concrete mixtures is a promising approach for promoting sustainable development in the construction industry.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Balamurali Kanagaraj, N. Anand, R. Samuvel Raj, Jude Lukose, Diana Andrushia, Eva Lubloy
Summary: The development of sustainable infrastructure is a significant issue for modern society, with the use of traditional cement in concrete causing carbon dioxide emissions and contributing to global warming. Geopolymer concrete, which eliminates the need for cement, offers a solution to reduce carbon emissions. This study investigates the shear strength of high strength selfcompacting geopolymer concrete (HSGC) under high temperatures.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Harvinder Singh, Rafat Siddique
Summary: In this study, a greener self-compacting concrete (SCC) incorporating crushed recycled glass (CRG) has been developed, and the influence of metakaolin (MK) on its properties was investigated. The results showed that a greener SCC can be made using crushed recycled glass as sand replacement material and metakaolin as cement substitute.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Rahul Biswas, Manish Kumar, Raushan Kumar Singh, Majed Alzara, S. B. A. El Sayed, Mohamed Abdelmongy, Ahmed M. Yosri, Saif Eldeen A. S. Yousef
Summary: Machine learning models were used in this study to forecast the compressive strength of self-compacting concrete based on the replacement percentage of cement. A hybrid artificial neural network (ANN) combined with metaheuristic optimization techniques and two traditional models were employed. Multiple input factors were used, including cement, water-binder ratio, coarse aggregate, fine aggregate, fly ash, and superplasticizer. The suggested machine learning models showed consistent accuracy and can be considered as a robust technique for predicting the compressive strength of self-compacting concrete.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Jing Zhang, Xiamin Hu, Wei Shao, Yun Mook Lim, Zeyu Chen, Wenwen Zhu
Summary: Magnesium phosphate cement (MPC) has gained attention for its fast construction, excellent bonding performance, and eco-friendly nature. However, studies on MPC-based concrete and its properties are limited. This study discusses a new type of MPC-based self-compacting concrete with high early strength and investigates the effects of various factors on its properties. The results show the optimal mix proportion and suggest that mineral admixtures can be applied for mass construction in practical engineering.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Construction & Building Technology
Ahmad Alyaseen, Arunava Poddar, Navsal Kumar, Salwan Tajjour, C. Venkata Siva Rama Prasad, Hussain Alahmad, Parveen Sihag
Summary: The growth of cities and industrialization has increased the demand for concrete, leading to resource depletion and environmental issues. This study examines the influence of design parameters on concrete compressive strength and uses various techniques to predict the strength of high-performance self-compacting concrete. The results suggest that using recycled concrete aggregate and industrial waste can provide sustainable alternatives.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Environmental Sciences
Saloni Arora, Parveen Jangra, Yee Yan Lim, Thong M. Pham
Summary: This study proposes a self-compacting geopolymer concrete (SCGC) containing copper slag aggregates (CSA) and investigates its properties. The addition of CSA improves the flowability of the concrete and enhances its performance. The mixture with 20% CSA shows the best properties among all ratios.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
