Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

15 Downloads (Pure)

Abstract

Low purity kaolin clay is presently receiving attention as a promising aluminosilicate source that has the potential of extending the application of geopolymers because of its global abundance and low embodied energy, but its strength performance depends substantially on the calcination process, mineralogy of the clay, type and proportion of chemical activator etc. This work focuses on comparing the compressive strength of calcined clay geopolymer mortars activated by three forms of chemical activators. Three groups of geopolymer mortar mixes were prepared and tested, group one utilizes
sodium hydroxide solution (NaOH) prepared by adding 68% water to the pellets 24 hrs prior to mixing, group two based on sodium silicate solution derived by adding 55.9% water to sodium metasilicate pentahydrate (Na2SiO3.5H2O) 24 hrs prior to mixing, while the group three mixes were activated with industry produced Na2SiO3 solution that has 54.5% solid component. The results show that high compressive strength is achieved by developing calcined clay geopolymer mortar using high viscosity industry produced sodium silicate solution, while very low strength is achieved by utilizing sodium silicate containing chemically bounded water. The result further shows that the
compressive strength of the geopolymer mortars are enhanced by sealed curing of the samples.
Original languageEnglish
Title of host publicationFifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences)
EditorsEsmaiel Ganjian, Peter Claisse, Mukesh Limbachiya, Arpit Goyal
PublisherInternational Committee of the SCMT conferences
ChapterSCMT5
Pages17-28
Number of pages11
Volume3
Publication statusPublished - 14 Jul 2019
EventFifth International Conference on Sustainable Construction Materials and Technologies - Kingston upon Thames, United Kingdom
Duration: 14 Jul 201917 Jul 2019
Conference number: 5
https://www.kingston.ac.uk/events/item/2839/14-jul-2019-fifth-international-conference-on-sustainable-construction-materials-and-technologies-scmt5/

Publication series

Name
ISSN (Print)2515-3048
ISSN (Electronic)2515-3056

Conference

ConferenceFifth International Conference on Sustainable Construction Materials and Technologies
Abbreviated titleSCMT5
CountryUnited Kingdom
CityKingston upon Thames
Period14/07/1917/07/19
Internet address

Fingerprint

Geopolymers
Mortar
Compressive strength
Clay
Sodium
Silicates
Water
Mineralogy
Kaolin
Aluminosilicates
Calcination
Curing
Industry
Viscosity

Keywords

  • Calcined clay
  • sodium silicate
  • sodium hydroxide
  • geopolymer
  • mortar
  • compressive strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Shinkafi, A. B., Khorami, M., Ganjian, E., & Tyrer, M. (2019). Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar. In E. Ganjian, P. Claisse, M. Limbachiya, & A. Goyal (Eds.), Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences) (Vol. 3, pp. 17-28). [5132] International Committee of the SCMT conferences.

Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar. / Shinkafi, Aminu Bature; Khorami, Morteza; Ganjian, Esmaiel; Tyrer, Mark.

Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences) . ed. / Esmaiel Ganjian; Peter Claisse; Mukesh Limbachiya; Arpit Goyal. Vol. 3 International Committee of the SCMT conferences, 2019. p. 17-28 5132.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Shinkafi, AB, Khorami, M, Ganjian, E & Tyrer, M 2019, Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar. in E Ganjian, P Claisse, M Limbachiya & A Goyal (eds), Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences) . vol. 3, 5132, International Committee of the SCMT conferences, pp. 17-28, Fifth International Conference on Sustainable Construction Materials and Technologies , Kingston upon Thames, United Kingdom, 14/07/19.
Shinkafi AB, Khorami M, Ganjian E, Tyrer M. Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar. In Ganjian E, Claisse P, Limbachiya M, Goyal A, editors, Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences) . Vol. 3. International Committee of the SCMT conferences. 2019. p. 17-28. 5132
Shinkafi, Aminu Bature ; Khorami, Morteza ; Ganjian, Esmaiel ; Tyrer, Mark. / Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar. Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences) . editor / Esmaiel Ganjian ; Peter Claisse ; Mukesh Limbachiya ; Arpit Goyal. Vol. 3 International Committee of the SCMT conferences, 2019. pp. 17-28
@inproceedings{87d0a7bc59154df6940df5d9647fa8a5,
title = "Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar",
abstract = "Low purity kaolin clay is presently receiving attention as a promising aluminosilicate source that has the potential of extending the application of geopolymers because of its global abundance and low embodied energy, but its strength performance depends substantially on the calcination process, mineralogy of the clay, type and proportion of chemical activator etc. This work focuses on comparing the compressive strength of calcined clay geopolymer mortars activated by three forms of chemical activators. Three groups of geopolymer mortar mixes were prepared and tested, group one utilizessodium hydroxide solution (NaOH) prepared by adding 68{\%} water to the pellets 24 hrs prior to mixing, group two based on sodium silicate solution derived by adding 55.9{\%} water to sodium metasilicate pentahydrate (Na2SiO3.5H2O) 24 hrs prior to mixing, while the group three mixes were activated with industry produced Na2SiO3 solution that has 54.5{\%} solid component. The results show that high compressive strength is achieved by developing calcined clay geopolymer mortar using high viscosity industry produced sodium silicate solution, while very low strength is achieved by utilizing sodium silicate containing chemically bounded water. The result further shows that thecompressive strength of the geopolymer mortars are enhanced by sealed curing of the samples.",
keywords = "Calcined clay, sodium silicate, sodium hydroxide, geopolymer, mortar, compressive strength",
author = "Shinkafi, {Aminu Bature} and Morteza Khorami and Esmaiel Ganjian and Mark Tyrer",
year = "2019",
month = "7",
day = "14",
language = "English",
volume = "3",
publisher = "International Committee of the SCMT conferences",
pages = "17--28",
editor = "Ganjian, {Esmaiel } and { Claisse}, Peter and Limbachiya, {Mukesh } and Arpit Goyal",
booktitle = "Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences)",
address = "United Kingdom",

}

TY - GEN

T1 - Effects of the nature of chemical activator on the compressive strength of calcined clay geopolymer mortar

AU - Shinkafi, Aminu Bature

AU - Khorami, Morteza

AU - Ganjian, Esmaiel

AU - Tyrer, Mark

PY - 2019/7/14

Y1 - 2019/7/14

N2 - Low purity kaolin clay is presently receiving attention as a promising aluminosilicate source that has the potential of extending the application of geopolymers because of its global abundance and low embodied energy, but its strength performance depends substantially on the calcination process, mineralogy of the clay, type and proportion of chemical activator etc. This work focuses on comparing the compressive strength of calcined clay geopolymer mortars activated by three forms of chemical activators. Three groups of geopolymer mortar mixes were prepared and tested, group one utilizessodium hydroxide solution (NaOH) prepared by adding 68% water to the pellets 24 hrs prior to mixing, group two based on sodium silicate solution derived by adding 55.9% water to sodium metasilicate pentahydrate (Na2SiO3.5H2O) 24 hrs prior to mixing, while the group three mixes were activated with industry produced Na2SiO3 solution that has 54.5% solid component. The results show that high compressive strength is achieved by developing calcined clay geopolymer mortar using high viscosity industry produced sodium silicate solution, while very low strength is achieved by utilizing sodium silicate containing chemically bounded water. The result further shows that thecompressive strength of the geopolymer mortars are enhanced by sealed curing of the samples.

AB - Low purity kaolin clay is presently receiving attention as a promising aluminosilicate source that has the potential of extending the application of geopolymers because of its global abundance and low embodied energy, but its strength performance depends substantially on the calcination process, mineralogy of the clay, type and proportion of chemical activator etc. This work focuses on comparing the compressive strength of calcined clay geopolymer mortars activated by three forms of chemical activators. Three groups of geopolymer mortar mixes were prepared and tested, group one utilizessodium hydroxide solution (NaOH) prepared by adding 68% water to the pellets 24 hrs prior to mixing, group two based on sodium silicate solution derived by adding 55.9% water to sodium metasilicate pentahydrate (Na2SiO3.5H2O) 24 hrs prior to mixing, while the group three mixes were activated with industry produced Na2SiO3 solution that has 54.5% solid component. The results show that high compressive strength is achieved by developing calcined clay geopolymer mortar using high viscosity industry produced sodium silicate solution, while very low strength is achieved by utilizing sodium silicate containing chemically bounded water. The result further shows that thecompressive strength of the geopolymer mortars are enhanced by sealed curing of the samples.

KW - Calcined clay

KW - sodium silicate

KW - sodium hydroxide

KW - geopolymer

KW - mortar

KW - compressive strength

UR - http://www.scopus.com/inward/record.url?scp=85071099746&partnerID=8YFLogxK

M3 - Conference proceeding

VL - 3

SP - 17

EP - 28

BT - Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5): Volume 3 (SCMT Conferences)

A2 - Ganjian, Esmaiel

A2 - Claisse, Peter

A2 - Limbachiya, Mukesh

A2 - Goyal, Arpit

PB - International Committee of the SCMT conferences

ER -