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

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
Journal	Resources, Conservation and Recycling
Volume	197
DOIs	https://doi.org/10.1016/j.resconrec.2023.107098
State	Published - Oct 2023

Bibliographical note

Funding Information:
The experimental work was performed with internal funding from Universidad de los Andes, Chile. Additionally, the authors would like to acknowledge the contribution of Dr. Qian Zhang from FAMU-FSU for her insightful feedback on the testing and analysis of SHCC samples, and Antonia Gajardo, Andrea Rubio, José Ignacio Figueroa, and Tomás Delgado for their help in mixing and testing.

Funding Information:
The experimental work was performed with internal funding from Universidad de los Andes, Chile . Additionally, the authors would like to acknowledge the contribution of Dr. Qian Zhang from FAMU-FSU for her insightful feedback on the testing and analysis of SHCC samples, and Antonia Gajardo, Andrea Rubio, José Ignacio Figueroa, and Tomás Delgado for their help in mixing and testing.

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)

Access to Document

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 = "Funding Information: The experimental work was performed with internal funding from Universidad de los Andes, Chile. Additionally, the authors would like to acknowledge the contribution of Dr. Qian Zhang from FAMU-FSU for her insightful feedback on the testing and analysis of SHCC samples, and Antonia Gajardo, Andrea Rubio, Jos{\'e} Ignacio Figueroa, and Tom{\'a}s Delgado for their help in mixing and testing. Funding Information: The experimental work was performed with internal funding from Universidad de los Andes, Chile . Additionally, the authors would like to acknowledge the contribution of Dr. Qian Zhang from FAMU-FSU for her insightful feedback on the testing and analysis of SHCC samples, and Antonia Gajardo, Andrea Rubio, Jos{\'e} Ignacio Figueroa, and Tom{\'a}s Delgado for their help in mixing and testing. Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

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AU - Leon-Miquel, Matias

AU - Silva-Retamal, Juan

AU - Aparicio, Diego

AU - Rangelov, Milena

AU - Jin, Qingxu

AU - Paul, Alvaro

N1 - Funding Information: The experimental work was performed with internal funding from Universidad de los Andes, Chile. Additionally, the authors would like to acknowledge the contribution of Dr. Qian Zhang from FAMU-FSU for her insightful feedback on the testing and analysis of SHCC samples, and Antonia Gajardo, Andrea Rubio, José Ignacio Figueroa, and Tomás Delgado for their help in mixing and testing. Funding Information: The experimental work was performed with internal funding from Universidad de los Andes, Chile . Additionally, the authors would like to acknowledge the contribution of Dr. Qian Zhang from FAMU-FSU for her insightful feedback on the testing and analysis of SHCC samples, and Antonia Gajardo, Andrea Rubio, José Ignacio Figueroa, and Tomás Delgado for their help in mixing and testing. Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/10

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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.

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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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