Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation

Marija Nedeljkovic; Corrie van Hoek; Enno Zinngrebe; Sieger van der Laan; Guang Ye

Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation

Marija Nedeljkovic, Corrie van Hoek, Enno Zinngrebe, Sieger van der Laan, Guang Ye

Materials and Environment

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

Abstract

Carbonation of alkali-activated fly ash (FA) and ground granulated blast furnace slag (GBFS) pastes has been investigated after one year of exposure to 0.038 % (v/v) CO2 at 20°C, 55% RH. In particular, the aim was to study the gel deterioration in the samples and changes of the compositions and proportions of the individual chemical domains after carbonation. For that purpose, a new method called PhAse Recognition and Characterization (PARC) [1] based on SEM-EDS elemental mapping was used. The paste bulk chemical composition was evaluated with PARC and XRF. The crystalline products of carbonation were determined and quantified with X-ray diffraction (XRD). Local microanalysis shows that carbonation of the pastes was occurring predominantly around GBFS particles (carbonation of Ca-(Na-)Al-Si-H+Mg gel) and throughout the gel (carbonation of Ca-(Na-)Al-Si-H and Ca-(Na-)Si-H).

Original language	English
Title of host publication	4th International Conference on Service Life Design for Infrastructures
Subtitle of host publication	(SLD4) 27-30 August 2018 – Delft, Netherlands
Editors	Guang Ye, Yong Yuan, Claudia Romero Rodriguez, Hongzhi Zhang, Branko Šavija
Publisher	Rilem
Pages	512-515
ISBN (Electronic)	978-2-35158-213-8
Publication status	Published - 2018
Event	4th International Conference on Service Life Design for Infrastructures - Delft, Netherlands Duration: 27 Aug 2018 → 30 Aug 2018 Conference number: 4

Publication series

Name	Rilem proceedings
Publisher	Rilem
Number	PRO 125

Conference

Conference	4th International Conference on Service Life Design for Infrastructures
Abbreviated title	SLD4
Country/Territory	Netherlands
City	Delft
Period	27/08/18 → 30/08/18

Keywords

Alkali-activated GBFS and FA
gel
Carbonation
PARC

Cite this

Nedeljkovic, M., van Hoek, C., Zinngrebe, E., van der Laan, S., & Ye, G. (2018). Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation. In G. Ye, Y. Yuan, C. R. Rodriguez, H. Zhang, & B. Šavija (Eds.), 4th International Conference on Service Life Design for Infrastructures: (SLD4) 27-30 August 2018 – Delft, Netherlands (pp. 512-515). (Rilem proceedings; No. PRO 125). Rilem.

Nedeljkovic, Marija ; van Hoek, Corrie ; Zinngrebe, Enno et al. / Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation. 4th International Conference on Service Life Design for Infrastructures: (SLD4) 27-30 August 2018 – Delft, Netherlands. editor / Guang Ye ; Yong Yuan ; Claudia Romero Rodriguez ; Hongzhi Zhang ; Branko Šavija. Rilem, 2018. pp. 512-515 (Rilem proceedings; PRO 125).

@inproceedings{b7784d4414f3467396611449fb1d134e,

title = "Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation",

abstract = "Carbonation of alkali-activated fly ash (FA) and ground granulated blast furnace slag (GBFS) pastes has been investigated after one year of exposure to 0.038 \% (v/v) CO2 at 20°C, 55\% RH. In particular, the aim was to study the gel deterioration in the samples and changes of the compositions and proportions of the individual chemical domains after carbonation. For that purpose, a new method called PhAse Recognition and Characterization (PARC) [1] based on SEM-EDS elemental mapping was used. The paste bulk chemical composition was evaluated with PARC and XRF. The crystalline products of carbonation were determined and quantified with X-ray diffraction (XRD). Local microanalysis shows that carbonation of the pastes was occurring predominantly around GBFS particles (carbonation of Ca-(Na-)Al-Si-H+Mg gel) and throughout the gel (carbonation of Ca-(Na-)Al-Si-H and Ca-(Na-)Si-H). ",

keywords = "Alkali-activated GBFS and FA, gel, Carbonation, PARC",

author = "Marija Nedeljkovic and \{van Hoek\}, Corrie and Enno Zinngrebe and \{van der Laan\}, Sieger and Guang Ye",

year = "2018",

language = "English",

series = "Rilem proceedings",

publisher = "Rilem",

number = "PRO 125",

pages = "512--515",

editor = "Guang Ye and Yong Yuan and Rodriguez, \{Claudia Romero\} and Hongzhi Zhang and Branko {\v S}avija",

booktitle = "4th International Conference on Service Life Design for Infrastructures",

note = "4th International Conference on Service<br/>Life Design for Infrastructures, SLD4 ; Conference date: 27-08-2018 Through 30-08-2018",

}

Nedeljkovic, M, van Hoek, C, Zinngrebe, E, van der Laan, S & Ye, G 2018, Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation. in G Ye, Y Yuan, CR Rodriguez, H Zhang & B Šavija (eds), 4th International Conference on Service Life Design for Infrastructures: (SLD4) 27-30 August 2018 – Delft, Netherlands. Rilem proceedings, no. PRO 125, Rilem, pp. 512-515, 4th International Conference on Service
Life Design for Infrastructures, Delft, Netherlands, 27/08/18.

Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation. / Nedeljkovic, Marija; van Hoek, Corrie; Zinngrebe, Enno et al.
4th International Conference on Service Life Design for Infrastructures: (SLD4) 27-30 August 2018 – Delft, Netherlands. ed. / Guang Ye; Yong Yuan; Claudia Romero Rodriguez; Hongzhi Zhang; Branko Šavija. Rilem, 2018. p. 512-515 (Rilem proceedings; No. PRO 125).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation

AU - Nedeljkovic, Marija

AU - van Hoek, Corrie

AU - Zinngrebe, Enno

AU - van der Laan, Sieger

AU - Ye, Guang

N1 - Conference code: 4

PY - 2018

Y1 - 2018

N2 - Carbonation of alkali-activated fly ash (FA) and ground granulated blast furnace slag (GBFS) pastes has been investigated after one year of exposure to 0.038 % (v/v) CO2 at 20°C, 55% RH. In particular, the aim was to study the gel deterioration in the samples and changes of the compositions and proportions of the individual chemical domains after carbonation. For that purpose, a new method called PhAse Recognition and Characterization (PARC) [1] based on SEM-EDS elemental mapping was used. The paste bulk chemical composition was evaluated with PARC and XRF. The crystalline products of carbonation were determined and quantified with X-ray diffraction (XRD). Local microanalysis shows that carbonation of the pastes was occurring predominantly around GBFS particles (carbonation of Ca-(Na-)Al-Si-H+Mg gel) and throughout the gel (carbonation of Ca-(Na-)Al-Si-H and Ca-(Na-)Si-H).

AB - Carbonation of alkali-activated fly ash (FA) and ground granulated blast furnace slag (GBFS) pastes has been investigated after one year of exposure to 0.038 % (v/v) CO2 at 20°C, 55% RH. In particular, the aim was to study the gel deterioration in the samples and changes of the compositions and proportions of the individual chemical domains after carbonation. For that purpose, a new method called PhAse Recognition and Characterization (PARC) [1] based on SEM-EDS elemental mapping was used. The paste bulk chemical composition was evaluated with PARC and XRF. The crystalline products of carbonation were determined and quantified with X-ray diffraction (XRD). Local microanalysis shows that carbonation of the pastes was occurring predominantly around GBFS particles (carbonation of Ca-(Na-)Al-Si-H+Mg gel) and throughout the gel (carbonation of Ca-(Na-)Al-Si-H and Ca-(Na-)Si-H).

KW - Alkali-activated GBFS and FA

KW - gel

KW - Carbonation

KW - PARC

M3 - Conference contribution

T3 - Rilem proceedings

SP - 512

EP - 515

BT - 4th International Conference on Service Life Design for Infrastructures

A2 - Ye, Guang

A2 - Yuan, Yong

A2 - Rodriguez, Claudia Romero

A2 - Zhang, Hongzhi

A2 - Šavija, Branko

PB - Rilem

T2 - 4th International Conference on Service<br/>Life Design for Infrastructures

Y2 - 27 August 2018 through 30 August 2018

ER -

Nedeljkovic M, van Hoek C, Zinngrebe E, van der Laan S, Ye G. Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation. In Ye G, Yuan Y, Rodriguez CR, Zhang H, Šavija B, editors, 4th International Conference on Service Life Design for Infrastructures: (SLD4) 27-30 August 2018 – Delft, Netherlands. Rilem. 2018. p. 512-515. (Rilem proceedings; PRO 125).

Gel deterioration in alkali-activated slag and fly ash pastes under natural carbonation

Abstract

Publication series

Conference

Keywords

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