Peruvian volcanic ashes as new alternative material in geopolymer preparation: Influence of dissolution concentration and wear resistance

Danny Tupayachy-Quispe, Jonathan Joseph Almiron Baca, Fredy Apaza, Rossibel Dileydi Churata Añasco, Evelyn Paredes, Manuel Torres-Carrasco, Asunción Bautista

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This research focuses on the search for materials susceptible to being alkaline activated for the generation of new geopolymer materials (alternative to fly ash and blast furnace slag). The potential use of volcanic ash from the Ubinas volcano (located in Moquegua, Peru) for geopolymer synthesis has been studied. NaOH solution has been used in different concentrations for the activation of volcanic ashes. The effect of the concentration of the NaOH solution on the mechanical properties (compressive strength and porosity) of the hardened specimens has been analyzed. Systems activated with solutions of 6, 9 and 12M has shown a good mechanical performance due to the formation of the main reaction product (N-A-S-H gel) and a good wear resistance. The efflorescence effect when using high alkali contents has affected the wear results. This research opens a new gate to the use of this type of materials of volcanic origin and their use as resistant materials to wear and abrasion.

Original languageEnglish
Title of host publication18th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology
Subtitle of host publication"Engineering, Integration, and Alliances for a Sustainable Development" "Hemispheric Cooperation for Competitiveness and Prosperity on a Knowledge-Based Economy", LACCEI 2020
PublisherLatin American and Caribbean Consortium of Engineering Institutions
ISBN (Electronic)9789585207141
DOIs
StatePublished - 2020
Event18th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology: "Engineering, Integration, and Alliances for a Sustainable Development" "Hemispheric Cooperation for Competitiveness and Prosperity on a Knowledge-Based Economy", LACCEI 2020 - Virtual, Online
Duration: 27 Jul 202031 Jul 2020

Publication series

NameProceedings of the LACCEI international Multi-conference for Engineering, Education and Technology
ISSN (Electronic)2414-6390

Conference

Conference18th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology: "Engineering, Integration, and Alliances for a Sustainable Development" "Hemispheric Cooperation for Competitiveness and Prosperity on a Knowledge-Based Economy", LACCEI 2020
CityVirtual, Online
Period27/07/2031/07/20

Bibliographical note

Funding Information:
The Instituto Geol?gico, Minero y Metal?rgico - INGEMMET (INGEMMET) and Universidad Carlos III de Madrid. We also wish to express our gratitude to Juan Jose Camacho Torres and the researcher Francisco Javier Velasco L?pez for their contributions.

Publisher Copyright:
© 2020 Latin American and Caribbean Consortium of Engineering Institutions. All rights reserved.

Keywords

  • Alkaline solution
  • Compressive strength
  • Geopolymer
  • Volcanic ash
  • Wear durability

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