Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concrete
The present study investigates the optimization of geopolymer concrete mixes with the addition of metakaolin and ground granular blast-furnace slag as binding agents, ensuring a sustainable and eco-friendly alternative to conventional concrete. In this study, different proportions of the input param...
Saved in:
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Josip Juraj Strossmayer University of Osijek, Faculty of Civil Engineering and Architecture Osijek, Croatia
2024-01-01
|
Series: | Advances in Civil and Architectural Engineering |
Subjects: | |
Online Access: | https://hrcak.srce.hr/ojs/index.php/acae/article/view/28364/16675 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
_version_ | 1841550113556660224 |
---|---|
author | Rahul Kumar Rajwinder Singh Mahesh Patel |
author_facet | Rahul Kumar Rajwinder Singh Mahesh Patel |
author_sort | Rahul Kumar |
collection | DOAJ |
description | The present study investigates the optimization of geopolymer concrete mixes with the addition of metakaolin and ground granular blast-furnace slag as binding agents, ensuring a sustainable and eco-friendly alternative to conventional concrete. In this study, different proportions of the input parameters, such as the molarity of sodium hydroxide, ratio of sodium silicate to sodium hydroxide, and ratio of fixed alkali activator to binder have been considered. Attributes such as compressive strength, ultra-sonic pulse velocity, electricity resistance, mass loss, and strength variation due to acid attack for six geopolymer concrete mixes have been evaluated at different ambient curing periods. In addition, the mathematical relationship, i.e., linear regression, between these properties was also evaluated. The results show that a sodium silicate to sodium hydroxide ratio of 1,8; n sodium-hydroxide molarity of 14, and an alkali activator to binder ratio of 0,45 demonstrated the highest strength (43,3 MPa), electrical resistivity (35,1 K.Ohm.cm), and pulse velocity (4,2 km/s) with the minimal effect of H2SO4 solution on mass (1,2 %) and strength (5,8 %). Additionally, statistical analysis indicated a strong relationship of compressive strength with other properties, which improved as the curing days extended from 28 (Avg. R2=0,68) to 56 (Avg. R2=0,74) days. The outcomes of the study are expected to contribute to the advancement of sustainable construction by providing relevant data regarding material selection, ensuring quality, and optimizing geopolymer concrete production with metakaolin and ground granular blast-furnace slag. |
format | Article |
id | doaj-art-7a1b767bef4140ba8dcc7b33bd24cdfd |
institution | Kabale University |
issn | 2975-3848 |
language | English |
publishDate | 2024-01-01 |
publisher | Josip Juraj Strossmayer University of Osijek, Faculty of Civil Engineering and Architecture Osijek, Croatia |
record_format | Article |
series | Advances in Civil and Architectural Engineering |
spelling | doaj-art-7a1b767bef4140ba8dcc7b33bd24cdfd2025-01-10T09:28:58ZengJosip Juraj Strossmayer University of Osijek, Faculty of Civil Engineering and Architecture Osijek, CroatiaAdvances in Civil and Architectural Engineering2975-38482024-01-011529466610.13167/2024.29.4Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concreteRahul Kumar0Rajwinder Singh1Mahesh Patel2Indian Institute of Technology, Department of civil engineering, Guwahati, Assam, IndiaDr. B. R. Ambedkar National Institute of Technology, Jalandhar, Punjab, IndiaDr. B. R. Ambedkar National Institute of Technology, Jalandhar, Punjab, IndiaThe present study investigates the optimization of geopolymer concrete mixes with the addition of metakaolin and ground granular blast-furnace slag as binding agents, ensuring a sustainable and eco-friendly alternative to conventional concrete. In this study, different proportions of the input parameters, such as the molarity of sodium hydroxide, ratio of sodium silicate to sodium hydroxide, and ratio of fixed alkali activator to binder have been considered. Attributes such as compressive strength, ultra-sonic pulse velocity, electricity resistance, mass loss, and strength variation due to acid attack for six geopolymer concrete mixes have been evaluated at different ambient curing periods. In addition, the mathematical relationship, i.e., linear regression, between these properties was also evaluated. The results show that a sodium silicate to sodium hydroxide ratio of 1,8; n sodium-hydroxide molarity of 14, and an alkali activator to binder ratio of 0,45 demonstrated the highest strength (43,3 MPa), electrical resistivity (35,1 K.Ohm.cm), and pulse velocity (4,2 km/s) with the minimal effect of H2SO4 solution on mass (1,2 %) and strength (5,8 %). Additionally, statistical analysis indicated a strong relationship of compressive strength with other properties, which improved as the curing days extended from 28 (Avg. R2=0,68) to 56 (Avg. R2=0,74) days. The outcomes of the study are expected to contribute to the advancement of sustainable construction by providing relevant data regarding material selection, ensuring quality, and optimizing geopolymer concrete production with metakaolin and ground granular blast-furnace slag.https://hrcak.srce.hr/ojs/index.php/acae/article/view/28364/16675geopolymer concretemetakaolinground granular blast-furnace slagcompressive strength |
spellingShingle | Rahul Kumar Rajwinder Singh Mahesh Patel Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concrete Advances in Civil and Architectural Engineering geopolymer concrete metakaolin ground granular blast-furnace slag compressive strength |
title | Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concrete |
title_full | Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concrete |
title_fullStr | Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concrete |
title_full_unstemmed | Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concrete |
title_short | Impact of variations in the molarity of sodium hydroxide on metakaolin-ground granular blast-furnace slag-based geopolymer concrete |
title_sort | impact of variations in the molarity of sodium hydroxide on metakaolin ground granular blast furnace slag based geopolymer concrete |
topic | geopolymer concrete metakaolin ground granular blast-furnace slag compressive strength |
url | https://hrcak.srce.hr/ojs/index.php/acae/article/view/28364/16675 |
work_keys_str_mv | AT rahulkumar impactofvariationsinthemolarityofsodiumhydroxideonmetakaolingroundgranularblastfurnaceslagbasedgeopolymerconcrete AT rajwindersingh impactofvariationsinthemolarityofsodiumhydroxideonmetakaolingroundgranularblastfurnaceslagbasedgeopolymerconcrete AT maheshpatel impactofvariationsinthemolarityofsodiumhydroxideonmetakaolingroundgranularblastfurnaceslagbasedgeopolymerconcrete |