Concrete waste management decision analysis based on life cycle assessment

Chooi Mei Mah, Takeshi Fujiwara, Chin Siong Ho

Research output: Chapter in Book/Report/Conference proceedingChapter

13 Citations (Scopus)

Abstract

Malaysia, a developing country has always had a high level of construction activity. While it means economic growth, the waste generated by the construction industry has always posed a problem. Most of the construction waste is made up of concrete. The inert and non-hazardous concrete waste, suffers from weak enforcement provisions and this further escalates it into large scale landfill dumping and illegal dumping. The consequences of improper waste management are potentially alarming. With the rising concerns of waste management and global carbon concentrations, this study aims to evaluate the potential environmental impacts associated with concrete waste materials and to identify the best alternative in managing the concrete waste. A comprehensive life cycle assessment framework is proposed to assess the environmental impacts associated with the upstream and downstream of concrete waste life cycle; from raw material extraction to material processing, distribution to disposal or recycle. This study analysed the life cycle system in three scenarios: Scenario 1 depicts the cradle-To-grave scenario where concrete waste is sent to landfill without treatment and recycling. Scenario 2 and 3 depict the cradle-To-cradle scenarios in which the concrete waste is cyclically recycled into aggregates and reuse as road base material and reuse in recycled aggregate concrete production. With the compilation of a systematic life cycle inventory of relevant energy, fuel, and process emissions as inputs and released carbon emissions as outputs, this study helps in interpreting the environmental impacts of different waste management into a series of quantitative measures for more informed decision making. A construction project case study is modelled and analysed in the life cycle assessment framework to demonstrate the model's applicability. Results from this study suggest that the recycle of concrete waste into aggregates and reuse in recycled aggregate concrete production have the least GHG impact to the environment at 0.094 tCO2. Recycling of concrete waste for road base material emits 0.095 tCO2 and followed by landfilling at 0.139 tCO2. This model intended to be an analysis and decisionmaking tool while embracing sustainable development stewardship.

Original languageEnglish
Title of host publicationChemical Engineering Transactions
PublisherItalian Association of Chemical Engineering - AIDIC
Pages25-30
Number of pages6
Volume56
ISBN (Electronic)9788895608471
DOIs
Publication statusPublished - Jan 1 2017
Externally publishedYes

Fingerprint

Decision theory
Waste management
Life cycle
Concretes
Environmental impact
Concrete aggregates
Land fill
Recycling
Carbon
Construction industry
Developing countries
Sustainable development
Raw materials
Decision making
Economics

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Mah, C. M., Fujiwara, T., & Ho, C. S. (2017). Concrete waste management decision analysis based on life cycle assessment. In Chemical Engineering Transactions (Vol. 56, pp. 25-30). Italian Association of Chemical Engineering - AIDIC. https://doi.org/10.3303/CET1756005

Concrete waste management decision analysis based on life cycle assessment. / Mah, Chooi Mei; Fujiwara, Takeshi; Ho, Chin Siong.

Chemical Engineering Transactions. Vol. 56 Italian Association of Chemical Engineering - AIDIC, 2017. p. 25-30.

Research output: Chapter in Book/Report/Conference proceedingChapter

Mah, CM, Fujiwara, T & Ho, CS 2017, Concrete waste management decision analysis based on life cycle assessment. in Chemical Engineering Transactions. vol. 56, Italian Association of Chemical Engineering - AIDIC, pp. 25-30. https://doi.org/10.3303/CET1756005
Mah CM, Fujiwara T, Ho CS. Concrete waste management decision analysis based on life cycle assessment. In Chemical Engineering Transactions. Vol. 56. Italian Association of Chemical Engineering - AIDIC. 2017. p. 25-30 https://doi.org/10.3303/CET1756005
Mah, Chooi Mei ; Fujiwara, Takeshi ; Ho, Chin Siong. / Concrete waste management decision analysis based on life cycle assessment. Chemical Engineering Transactions. Vol. 56 Italian Association of Chemical Engineering - AIDIC, 2017. pp. 25-30
@inbook{8f7dc8842523430ea099e6f907f70f90,
title = "Concrete waste management decision analysis based on life cycle assessment",
abstract = "Malaysia, a developing country has always had a high level of construction activity. While it means economic growth, the waste generated by the construction industry has always posed a problem. Most of the construction waste is made up of concrete. The inert and non-hazardous concrete waste, suffers from weak enforcement provisions and this further escalates it into large scale landfill dumping and illegal dumping. The consequences of improper waste management are potentially alarming. With the rising concerns of waste management and global carbon concentrations, this study aims to evaluate the potential environmental impacts associated with concrete waste materials and to identify the best alternative in managing the concrete waste. A comprehensive life cycle assessment framework is proposed to assess the environmental impacts associated with the upstream and downstream of concrete waste life cycle; from raw material extraction to material processing, distribution to disposal or recycle. This study analysed the life cycle system in three scenarios: Scenario 1 depicts the cradle-To-grave scenario where concrete waste is sent to landfill without treatment and recycling. Scenario 2 and 3 depict the cradle-To-cradle scenarios in which the concrete waste is cyclically recycled into aggregates and reuse as road base material and reuse in recycled aggregate concrete production. With the compilation of a systematic life cycle inventory of relevant energy, fuel, and process emissions as inputs and released carbon emissions as outputs, this study helps in interpreting the environmental impacts of different waste management into a series of quantitative measures for more informed decision making. A construction project case study is modelled and analysed in the life cycle assessment framework to demonstrate the model's applicability. Results from this study suggest that the recycle of concrete waste into aggregates and reuse in recycled aggregate concrete production have the least GHG impact to the environment at 0.094 tCO2. Recycling of concrete waste for road base material emits 0.095 tCO2 and followed by landfilling at 0.139 tCO2. This model intended to be an analysis and decisionmaking tool while embracing sustainable development stewardship.",
author = "Mah, {Chooi Mei} and Takeshi Fujiwara and Ho, {Chin Siong}",
year = "2017",
month = "1",
day = "1",
doi = "10.3303/CET1756005",
language = "English",
volume = "56",
pages = "25--30",
booktitle = "Chemical Engineering Transactions",
publisher = "Italian Association of Chemical Engineering - AIDIC",

}

TY - CHAP

T1 - Concrete waste management decision analysis based on life cycle assessment

AU - Mah, Chooi Mei

AU - Fujiwara, Takeshi

AU - Ho, Chin Siong

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Malaysia, a developing country has always had a high level of construction activity. While it means economic growth, the waste generated by the construction industry has always posed a problem. Most of the construction waste is made up of concrete. The inert and non-hazardous concrete waste, suffers from weak enforcement provisions and this further escalates it into large scale landfill dumping and illegal dumping. The consequences of improper waste management are potentially alarming. With the rising concerns of waste management and global carbon concentrations, this study aims to evaluate the potential environmental impacts associated with concrete waste materials and to identify the best alternative in managing the concrete waste. A comprehensive life cycle assessment framework is proposed to assess the environmental impacts associated with the upstream and downstream of concrete waste life cycle; from raw material extraction to material processing, distribution to disposal or recycle. This study analysed the life cycle system in three scenarios: Scenario 1 depicts the cradle-To-grave scenario where concrete waste is sent to landfill without treatment and recycling. Scenario 2 and 3 depict the cradle-To-cradle scenarios in which the concrete waste is cyclically recycled into aggregates and reuse as road base material and reuse in recycled aggregate concrete production. With the compilation of a systematic life cycle inventory of relevant energy, fuel, and process emissions as inputs and released carbon emissions as outputs, this study helps in interpreting the environmental impacts of different waste management into a series of quantitative measures for more informed decision making. A construction project case study is modelled and analysed in the life cycle assessment framework to demonstrate the model's applicability. Results from this study suggest that the recycle of concrete waste into aggregates and reuse in recycled aggregate concrete production have the least GHG impact to the environment at 0.094 tCO2. Recycling of concrete waste for road base material emits 0.095 tCO2 and followed by landfilling at 0.139 tCO2. This model intended to be an analysis and decisionmaking tool while embracing sustainable development stewardship.

AB - Malaysia, a developing country has always had a high level of construction activity. While it means economic growth, the waste generated by the construction industry has always posed a problem. Most of the construction waste is made up of concrete. The inert and non-hazardous concrete waste, suffers from weak enforcement provisions and this further escalates it into large scale landfill dumping and illegal dumping. The consequences of improper waste management are potentially alarming. With the rising concerns of waste management and global carbon concentrations, this study aims to evaluate the potential environmental impacts associated with concrete waste materials and to identify the best alternative in managing the concrete waste. A comprehensive life cycle assessment framework is proposed to assess the environmental impacts associated with the upstream and downstream of concrete waste life cycle; from raw material extraction to material processing, distribution to disposal or recycle. This study analysed the life cycle system in three scenarios: Scenario 1 depicts the cradle-To-grave scenario where concrete waste is sent to landfill without treatment and recycling. Scenario 2 and 3 depict the cradle-To-cradle scenarios in which the concrete waste is cyclically recycled into aggregates and reuse as road base material and reuse in recycled aggregate concrete production. With the compilation of a systematic life cycle inventory of relevant energy, fuel, and process emissions as inputs and released carbon emissions as outputs, this study helps in interpreting the environmental impacts of different waste management into a series of quantitative measures for more informed decision making. A construction project case study is modelled and analysed in the life cycle assessment framework to demonstrate the model's applicability. Results from this study suggest that the recycle of concrete waste into aggregates and reuse in recycled aggregate concrete production have the least GHG impact to the environment at 0.094 tCO2. Recycling of concrete waste for road base material emits 0.095 tCO2 and followed by landfilling at 0.139 tCO2. This model intended to be an analysis and decisionmaking tool while embracing sustainable development stewardship.

UR - http://www.scopus.com/inward/record.url?scp=85019444811&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019444811&partnerID=8YFLogxK

U2 - 10.3303/CET1756005

DO - 10.3303/CET1756005

M3 - Chapter

AN - SCOPUS:85019444811

VL - 56

SP - 25

EP - 30

BT - Chemical Engineering Transactions

PB - Italian Association of Chemical Engineering - AIDIC

ER -