Fired-siltstone based geopolymers for CO2 sequestration wells: a study on the effect of curing temperature

Ashani Ranathunga, Ranjith Pathegama Gamage, Xiaojun Liu

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

Abstract

Wellbore integrity during Carbon Dioxide (CO 2 ) storage in deep aquifers is a major problem as the currently used well cement will lose its integrity at higher temperatures and eventually leads to CO 2 leakage into the atmosphere. Researchers have conducted several studies in order to find a proper well cement material and have tested several types of geopolymers mixing fly ash and different type of cements with an alkaline solution curing in different temperatures. This paper presents a study on geopolymer composites made from fired siltstone, slag as well as alkaline liquid which were cured at temperatures ranging from 23°C to 80°C. Five different types of geopolymer were prepared with ratios of fired siltstone (to 700 oC) and slag as 0:100, 20:80, 30:70, 40:60 and 50:50, separately. After preparing samples with various proportions under different temperatures, the mechanical properties of them were compared. The experimental results reveal that optimum curing temperature range is 50 to 70°C and addition of higher proportion of slag would help geopolymer gain better performance on mechanical strength compared to other geopolymer materials.

Original languageEnglish
Title of host publicationMERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages595-600
Number of pages6
ISBN (Print)9781538644171
DOIs
Publication statusPublished - 27 Jul 2018
EventInternational Multidisciplinary Moratuwa Engineering Research Conference 2018 - Moratuwa, Sri Lanka
Duration: 30 May 20181 Jun 2018
Conference number: 4th
http://www.mercon.mrt.ac.lk/2018/

Publication series

NameMERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference

Conference

ConferenceInternational Multidisciplinary Moratuwa Engineering Research Conference 2018
Abbreviated titleMERCon 2018
CountrySri Lanka
CityMoratuwa
Period30/05/181/06/18
Internet address

Keywords

  • curing temperature
  • geopolymer
  • stiffness
  • strength
  • wellbore

Cite this

Ranathunga, A., Gamage, R. P., & Liu, X. (2018). Fired-siltstone based geopolymers for CO2 sequestration wells: a study on the effect of curing temperature. In MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference (pp. 595-600). [8421984] (MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference). IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/MERCon.2018.8421984
Ranathunga, Ashani ; Gamage, Ranjith Pathegama ; Liu, Xiaojun. / Fired-siltstone based geopolymers for CO2 sequestration wells : a study on the effect of curing temperature. MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference. IEEE, Institute of Electrical and Electronics Engineers, 2018. pp. 595-600 (MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference).
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abstract = "Wellbore integrity during Carbon Dioxide (CO 2 ) storage in deep aquifers is a major problem as the currently used well cement will lose its integrity at higher temperatures and eventually leads to CO 2 leakage into the atmosphere. Researchers have conducted several studies in order to find a proper well cement material and have tested several types of geopolymers mixing fly ash and different type of cements with an alkaline solution curing in different temperatures. This paper presents a study on geopolymer composites made from fired siltstone, slag as well as alkaline liquid which were cured at temperatures ranging from 23°C to 80°C. Five different types of geopolymer were prepared with ratios of fired siltstone (to 700 oC) and slag as 0:100, 20:80, 30:70, 40:60 and 50:50, separately. After preparing samples with various proportions under different temperatures, the mechanical properties of them were compared. The experimental results reveal that optimum curing temperature range is 50 to 70°C and addition of higher proportion of slag would help geopolymer gain better performance on mechanical strength compared to other geopolymer materials.",
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Ranathunga, A, Gamage, RP & Liu, X 2018, Fired-siltstone based geopolymers for CO2 sequestration wells: a study on the effect of curing temperature. in MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference., 8421984, MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference, IEEE, Institute of Electrical and Electronics Engineers, pp. 595-600, International Multidisciplinary Moratuwa Engineering Research Conference 2018, Moratuwa, Sri Lanka, 30/05/18. https://doi.org/10.1109/MERCon.2018.8421984

Fired-siltstone based geopolymers for CO2 sequestration wells : a study on the effect of curing temperature. / Ranathunga, Ashani; Gamage, Ranjith Pathegama; Liu, Xiaojun.

MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference. IEEE, Institute of Electrical and Electronics Engineers, 2018. p. 595-600 8421984 (MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference).

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

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N2 - Wellbore integrity during Carbon Dioxide (CO 2 ) storage in deep aquifers is a major problem as the currently used well cement will lose its integrity at higher temperatures and eventually leads to CO 2 leakage into the atmosphere. Researchers have conducted several studies in order to find a proper well cement material and have tested several types of geopolymers mixing fly ash and different type of cements with an alkaline solution curing in different temperatures. This paper presents a study on geopolymer composites made from fired siltstone, slag as well as alkaline liquid which were cured at temperatures ranging from 23°C to 80°C. Five different types of geopolymer were prepared with ratios of fired siltstone (to 700 oC) and slag as 0:100, 20:80, 30:70, 40:60 and 50:50, separately. After preparing samples with various proportions under different temperatures, the mechanical properties of them were compared. The experimental results reveal that optimum curing temperature range is 50 to 70°C and addition of higher proportion of slag would help geopolymer gain better performance on mechanical strength compared to other geopolymer materials.

AB - Wellbore integrity during Carbon Dioxide (CO 2 ) storage in deep aquifers is a major problem as the currently used well cement will lose its integrity at higher temperatures and eventually leads to CO 2 leakage into the atmosphere. Researchers have conducted several studies in order to find a proper well cement material and have tested several types of geopolymers mixing fly ash and different type of cements with an alkaline solution curing in different temperatures. This paper presents a study on geopolymer composites made from fired siltstone, slag as well as alkaline liquid which were cured at temperatures ranging from 23°C to 80°C. Five different types of geopolymer were prepared with ratios of fired siltstone (to 700 oC) and slag as 0:100, 20:80, 30:70, 40:60 and 50:50, separately. After preparing samples with various proportions under different temperatures, the mechanical properties of them were compared. The experimental results reveal that optimum curing temperature range is 50 to 70°C and addition of higher proportion of slag would help geopolymer gain better performance on mechanical strength compared to other geopolymer materials.

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Ranathunga A, Gamage RP, Liu X. Fired-siltstone based geopolymers for CO2 sequestration wells: a study on the effect of curing temperature. In MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference. IEEE, Institute of Electrical and Electronics Engineers. 2018. p. 595-600. 8421984. (MERCon 2018 - 4th International Multidisciplinary Moratuwa Engineering Research Conference). https://doi.org/10.1109/MERCon.2018.8421984