2024 : 11 : 5
Mahdi Nematzadeh

Mahdi Nematzadeh

Academic rank: Professor
ORCID: 0000-0002-8065-0542
Education: PhD.
ScopusId: 36198613700
HIndex:
Faculty: Faculty of Technology and Engineering
Address:
Phone: 011-35302903

Research

Title
Synergistic effects of GGBFS and EAFS on rheology, mechanical properties, and durability of self-compacting concrete: Experiments, predictions, and life cycle assessment
Type
JournalPaper
Keywords
Self-compacting concreteLife cycle assessmentEAFSGGBFSCompressive strengthFlexural strengthEnvironmental impacts
Year
2024
Journal Construction and Building Materials
DOI
Researchers Seyed Amirhossein Hosseini ، Seyed Hosein Ghasemzadeh Mousavinejad ، Seyed-Amirreza Hosseini ، Maryam Asadi ، Mahdi Nematzadeh ، Mohammad Hadizadeh

Abstract

With the aim of reducing the use of natural resources, this research evaluated the behavior of self-compacting concrete (SCC) containing granulated blast furnace slag (GGBFS) powder instead of limestone powder, GGBFS fine aggregate instead of natural fine aggregate, and electric arc furnace slag coarse aggregate (EAFS) instead of natural coarse aggregate. The evaluation included a comprehensive assessment of fresh concrete properties, compressive strength, flexural strength, ultrasonic pulse velocity (UPV), water absorption, and capillary water absorption. In addition, equations were proposed to predict the compressive strength of concrete in terms of the type and percentage of material replacement and curing time. Finally, the environmental effects of the concrete mixtures were studied, which fills a significant research gap. The results showed that with the optimal use of the mentioned substitute materials in concrete, the properties of fresh concrete, hardened concrete, and durability are improved. Using 45% GGBFS powder, 30% GGBFS fine aggregate, and 45% EAFS coarse aggregate, the concrete properties improved in comparison to the reference concrete. However, the results of the life cycle assessment showed that this mix design has more harmful effects on the environment than other designs of the present research. It should be noted that if these materials were not used in concrete, the same amount of damage would have been occurred due to their disposal.