Novel application of Chilean natural pozzolan for sustainable strain-hardening cementitious composite

Matias Leon-Miquel; Juan Silva-Retamal; Diego Aparicio; Milena Rangelov; Qingxu Jin; Alvaro Paul

doi:10.1016/j.resconrec.2023.107098

Novel application of Chilean natural pozzolan for sustainable strain-hardening cementitious composite

Matias Leon-Miquel, Juan Silva-Retamal, Diego Aparicio, Milena Rangelov, Qingxu Jin^*, Alvaro Paul^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

This study aims to develop a novel solution to improve the sustainability and resiliency of the infrastructure in Chile. Due to the country's unique geographic situation of the coastal environment and high seismicity, the key is to design a low-carbon strain-hardening cementitious composite (SHCC) by replacing ordinary portland cement (OPC) with an abundant Chilean natural pozzolan (NP). The results indicate that the optimal replacement level is 30%. The newly developed NP-based SHCC shows a tensile strength of 6 MPa, a tensile strain capacity of 2.5%, and micro-cracks of <100 µm. In addition, this study also quantifies the environmental impact of the NP-based SHCC using a ‘cradle-to-gate’ life-cycle analysis. By replacing OPC with the NP, the CO₂ emission of NP-based SHCC reduces by 23%. The excellent tensile properties and cracking control suggest that NP-based SHCC could contribute to developing sustainable and resilient Chilean infrastructure.

Original language	English
Article number	107098
Pages (from-to)	1-13
Number of pages	13
Journal	Resources, Conservation and Recycling
Volume	197
DOIs	https://doi.org/10.1016/j.resconrec.2023.107098
State	Published - Oct 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Cracking control
Life-cycle analysis
Natural pozzolan
Strain-hardening cementitious composites
Sustainability

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.resconrec.2023.107098

Cite this

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title = "Novel application of Chilean natural pozzolan for sustainable strain-hardening cementitious composite",

abstract = "This study aims to develop a novel solution to improve the sustainability and resiliency of the infrastructure in Chile. Due to the country's unique geographic situation of the coastal environment and high seismicity, the key is to design a low-carbon strain-hardening cementitious composite (SHCC) by replacing ordinary portland cement (OPC) with an abundant Chilean natural pozzolan (NP). The results indicate that the optimal replacement level is 30%. The newly developed NP-based SHCC shows a tensile strength of 6 MPa, a tensile strain capacity of 2.5%, and micro-cracks of <100 µm. In addition, this study also quantifies the environmental impact of the NP-based SHCC using a {\textquoteleft}cradle-to-gate{\textquoteright} life-cycle analysis. By replacing OPC with the NP, the CO2 emission of NP-based SHCC reduces by 23%. The excellent tensile properties and cracking control suggest that NP-based SHCC could contribute to developing sustainable and resilient Chilean infrastructure.",

keywords = "Cracking control, Life-cycle analysis, Natural pozzolan, Strain-hardening cementitious composites, Sustainability",

author = "Matias Leon-Miquel and Juan Silva-Retamal and Diego Aparicio and Milena Rangelov and Qingxu Jin and Alvaro Paul",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = oct,

doi = "10.1016/j.resconrec.2023.107098",

language = "English",

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T1 - Novel application of Chilean natural pozzolan for sustainable strain-hardening cementitious composite

AU - Leon-Miquel, Matias

AU - Silva-Retamal, Juan

AU - Aparicio, Diego

AU - Rangelov, Milena

AU - Jin, Qingxu

AU - Paul, Alvaro

PY - 2023/10

Y1 - 2023/10

N2 - This study aims to develop a novel solution to improve the sustainability and resiliency of the infrastructure in Chile. Due to the country's unique geographic situation of the coastal environment and high seismicity, the key is to design a low-carbon strain-hardening cementitious composite (SHCC) by replacing ordinary portland cement (OPC) with an abundant Chilean natural pozzolan (NP). The results indicate that the optimal replacement level is 30%. The newly developed NP-based SHCC shows a tensile strength of 6 MPa, a tensile strain capacity of 2.5%, and micro-cracks of <100 µm. In addition, this study also quantifies the environmental impact of the NP-based SHCC using a ‘cradle-to-gate’ life-cycle analysis. By replacing OPC with the NP, the CO2 emission of NP-based SHCC reduces by 23%. The excellent tensile properties and cracking control suggest that NP-based SHCC could contribute to developing sustainable and resilient Chilean infrastructure.

AB - This study aims to develop a novel solution to improve the sustainability and resiliency of the infrastructure in Chile. Due to the country's unique geographic situation of the coastal environment and high seismicity, the key is to design a low-carbon strain-hardening cementitious composite (SHCC) by replacing ordinary portland cement (OPC) with an abundant Chilean natural pozzolan (NP). The results indicate that the optimal replacement level is 30%. The newly developed NP-based SHCC shows a tensile strength of 6 MPa, a tensile strain capacity of 2.5%, and micro-cracks of <100 µm. In addition, this study also quantifies the environmental impact of the NP-based SHCC using a ‘cradle-to-gate’ life-cycle analysis. By replacing OPC with the NP, the CO2 emission of NP-based SHCC reduces by 23%. The excellent tensile properties and cracking control suggest that NP-based SHCC could contribute to developing sustainable and resilient Chilean infrastructure.

KW - Cracking control

KW - Life-cycle analysis

KW - Natural pozzolan

KW - Strain-hardening cementitious composites

KW - Sustainability

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DO - 10.1016/j.resconrec.2023.107098

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VL - 197

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JO - Resources, Conservation and Recycling

JF - Resources, Conservation and Recycling

M1 - 107098

ER -

Novel application of Chilean natural pozzolan for sustainable strain-hardening cementitious composite

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

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