A comparative study on mechanical properties and environmental impact of UHPC with belite cement and portland cement

Yirui Li; Xiaohui Zeng; Ye Shi; Kai Yang; John Zhou; Hussaini Abdullahi Umar; Guangcheng Long; Youjun Xie

doi:10.1016/j.jclepro.2022.135003

A comparative study on mechanical properties and environmental impact of UHPC with belite cement and portland cement

Yirui Li, Xiaohui Zeng, Ye Shi, Kai Yang, John Zhou, Hussaini Abdullahi Umar, Guangcheng Long, Youjun Xie

Research output: Journal Publication › Article › peer-review

37 Citations (Scopus)

Abstract

Developing an eco-friendly UHPC with Belite cement (BC) is a great challenge because the mechanical strength of concrete with BC develops much more slowly than Ordinary Portland cement (alite-rich cement, OPC). However, BC has a lower CO₂ footprint than OPC due to a lower calcined temperature and less limestone demand, making it green cement. Besides, concrete with BC has better long-age performance. In this study, the utilization of BC in UHPC was compared to that of OPC. Three curing regimes were used for the designed UHPC. The compressive and flexural strengths of UHPC-BC are lower than of UHPC-OPC at one day but higher after 28 and 90 days of standard curing. After heat curing, the mechanical strength development of UHPC-BC improves noticeably and exceeds UHPC-OPC. UHPC-BC has a higher flexural strength to compressive strength ratio (f_f/f_cu), and there are more C–S–H, less CH and lower pore coarsening of UHPC-BC paste than UHPC-OPC, especially after heat curing. UHPC-BC has lower environmental impact indices at long age than UHPC-OPC. At 90 days of autoclaved curing, the compressive of UHPC-BC reaches up to 197.5 MPa with the embodied carbon content of 934.37 kg/m³, which is much lower than most UHPCs.

Original language	English
Article number	135003
Journal	Journal of Cleaner Production
Volume	380
DOIs	https://doi.org/10.1016/j.jclepro.2022.135003
Publication status	Published - 20 Dec 2022
Externally published	Yes

Keywords

Belite cement
Embodied carbon dioxide
Environmental impact
Mechanical properties
UHPC

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Environmental Science
Strategy and Management
Industrial and Manufacturing Engineering

UN SDGs

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

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10.1016/j.jclepro.2022.135003

Cite this

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title = "A comparative study on mechanical properties and environmental impact of UHPC with belite cement and portland cement",

abstract = "Developing an eco-friendly UHPC with Belite cement (BC) is a great challenge because the mechanical strength of concrete with BC develops much more slowly than Ordinary Portland cement (alite-rich cement, OPC). However, BC has a lower CO2 footprint than OPC due to a lower calcined temperature and less limestone demand, making it green cement. Besides, concrete with BC has better long-age performance. In this study, the utilization of BC in UHPC was compared to that of OPC. Three curing regimes were used for the designed UHPC. The compressive and flexural strengths of UHPC-BC are lower than of UHPC-OPC at one day but higher after 28 and 90 days of standard curing. After heat curing, the mechanical strength development of UHPC-BC improves noticeably and exceeds UHPC-OPC. UHPC-BC has a higher flexural strength to compressive strength ratio (ff/fcu), and there are more C–S–H, less CH and lower pore coarsening of UHPC-BC paste than UHPC-OPC, especially after heat curing. UHPC-BC has lower environmental impact indices at long age than UHPC-OPC. At 90 days of autoclaved curing, the compressive of UHPC-BC reaches up to 197.5 MPa with the embodied carbon content of 934.37 kg/m3, which is much lower than most UHPCs.",

keywords = "Belite cement, Embodied carbon dioxide, Environmental impact, Mechanical properties, UHPC",

author = "Yirui Li and Xiaohui Zeng and Ye Shi and Kai Yang and John Zhou and Umar, \{Hussaini Abdullahi\} and Guangcheng Long and Youjun Xie",

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doi = "10.1016/j.jclepro.2022.135003",

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T1 - A comparative study on mechanical properties and environmental impact of UHPC with belite cement and portland cement

AU - Li, Yirui

AU - Zeng, Xiaohui

AU - Shi, Ye

AU - Yang, Kai

AU - Zhou, John

AU - Umar, Hussaini Abdullahi

AU - Long, Guangcheng

AU - Xie, Youjun

PY - 2022/12/20

Y1 - 2022/12/20

N2 - Developing an eco-friendly UHPC with Belite cement (BC) is a great challenge because the mechanical strength of concrete with BC develops much more slowly than Ordinary Portland cement (alite-rich cement, OPC). However, BC has a lower CO2 footprint than OPC due to a lower calcined temperature and less limestone demand, making it green cement. Besides, concrete with BC has better long-age performance. In this study, the utilization of BC in UHPC was compared to that of OPC. Three curing regimes were used for the designed UHPC. The compressive and flexural strengths of UHPC-BC are lower than of UHPC-OPC at one day but higher after 28 and 90 days of standard curing. After heat curing, the mechanical strength development of UHPC-BC improves noticeably and exceeds UHPC-OPC. UHPC-BC has a higher flexural strength to compressive strength ratio (ff/fcu), and there are more C–S–H, less CH and lower pore coarsening of UHPC-BC paste than UHPC-OPC, especially after heat curing. UHPC-BC has lower environmental impact indices at long age than UHPC-OPC. At 90 days of autoclaved curing, the compressive of UHPC-BC reaches up to 197.5 MPa with the embodied carbon content of 934.37 kg/m3, which is much lower than most UHPCs.

AB - Developing an eco-friendly UHPC with Belite cement (BC) is a great challenge because the mechanical strength of concrete with BC develops much more slowly than Ordinary Portland cement (alite-rich cement, OPC). However, BC has a lower CO2 footprint than OPC due to a lower calcined temperature and less limestone demand, making it green cement. Besides, concrete with BC has better long-age performance. In this study, the utilization of BC in UHPC was compared to that of OPC. Three curing regimes were used for the designed UHPC. The compressive and flexural strengths of UHPC-BC are lower than of UHPC-OPC at one day but higher after 28 and 90 days of standard curing. After heat curing, the mechanical strength development of UHPC-BC improves noticeably and exceeds UHPC-OPC. UHPC-BC has a higher flexural strength to compressive strength ratio (ff/fcu), and there are more C–S–H, less CH and lower pore coarsening of UHPC-BC paste than UHPC-OPC, especially after heat curing. UHPC-BC has lower environmental impact indices at long age than UHPC-OPC. At 90 days of autoclaved curing, the compressive of UHPC-BC reaches up to 197.5 MPa with the embodied carbon content of 934.37 kg/m3, which is much lower than most UHPCs.

KW - Belite cement

KW - Embodied carbon dioxide

KW - Environmental impact

KW - Mechanical properties

KW - UHPC

UR - https://www.scopus.com/pages/publications/85142819705

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DO - 10.1016/j.jclepro.2022.135003

M3 - Article

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SN - 0959-6526

VL - 380

JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

M1 - 135003

ER -

A comparative study on mechanical properties and environmental impact of UHPC with belite cement and portland cement

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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