Page 14 - Issue 05

Industry Focus | 業界動向業界動向

Carbon Labelling for Construction Material | 建築物料的碳標籤

* This article is contributed by Dr. Thomas NG of the Department of Engineering, The University of Hong Kong
本文章由香港大學土木工程學院吳兆堂博士提供

建造業議會最近委託香港大學進行一項名為「建立以
Construction Industry Council (CIC) has recently
commissioned the University of Hong Kong to conduct a 香港為本的建築物料碳標籤制度」之研究。此為期十
research study entitled “Establishing a Hong Kong Based 八個月之項目研究目的乃制定一個碳標籤的制度，從
Carbon Labelling Framework for Construction Materials”. 而可根據建築物料的溫室氣體排放水平作出分類。其
This 18-month project aims to develop a framework for 標籤制度有助建設香港成為一個低碳經濟社區，並貫
classifying construction materials according to their green- 徹行政長官在 2009-10 年度施政報告所提出之方針。
house gas (GHG) emission level and so as to help build
Hong Kong into a low carbon economy as envisaged by the
Chief Executive in his 2009-10 Policy Address.

In fact, the construction industry has an indispensible role to 事實上，建造業在溫室氣體減排上可擔當相當重要的
play as the CO emitted by our industry is phenomenal. 角色，因該行業的二氧化碳排放量十分高。據過往研
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Previous studies have indicated that the embodied energy 究顯示，建築物的内涵能源佔其生命週期總能源消耗
of a building may constitute 15% of its lifetime energy 的百分之十五。因此，通過審慎選擇建築物料從而減
少建造業的二氧化碳輸出量之方法將非常可取。
consumption. Minimising the output of CO in the
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construction industry through prudent selection of
construction materials is, therefore, highly desirable.
儘管現存已有不少以香港為本的環境評估系統，如建
Despite the existence of various Hong Kong-based
environmental assessment systems, such as the Building 築 環 境 評 估 法 、 香 港 建 築 物 （ 商 業 、 住 宅 或 公 共 用
Environmental Assessment Method (BEAM Plus) and the 途）的溫室氣體排放及減除的核算和報告指引，它們
Guidelines to Account and Report on Greenhouse Gas 只集中評估整座建築物於運作期間對環境的影響。業
Emissions and Removals for Buildings, they primarily focus 界仍然欠缺一個被認受的建築物料於整個建築設施生
on the environmental impacts of a construction facility as a 命週期之溫室氣體排放的評估機制。
whole during the operational phase. An agreed mechanism
to evaluate the life-cycle emissions of construction materials
is so far lacking in our industry.

Carbon labelling has gained popularity in many sectors 由於碳標籤可有效地傳達碳排放的信息，所以它已被
including the food and car manufacturing industries due to 普及地應用於許多行業中，包括食品和汽車製造業。
its effectiveness in conveying the information about carbon 通過為產品進行由生產到棄置之碳足跡的測量及基準
emissions to various parties. By measuring and bench- 評價，消費者或採購人員可以選擇特定的產品以滿足
marking the carbon footprint of a product from its production 其排放目標。更重要的是，一個業內公認的碳標籤計
to disposal, consumers or those responsible for sourcing 劃 可 刺 激 設 計 師 ， 承 包 商 和 製 造 商 不 斷 開 發 新 的 思
can decide which product to order to meet their specific 路，選擇低碳物料及投資於新減排技術上。
emission goal. More importantly, a recognised carbon
labelling scheme will create incentives for designers,
contractors and manufacturers to develop novel ideas,
select low carbon materials and invest in new technologies
to reduce the emission level of construction facilities
relentlessly.

In this research, the research team will first examine the 此研究之團隊將首先分析碳標籤計劃對本港建造業的
implications of the proposed carbon labelling scheme in the 影響；再擬定不同類別之建築物料的特點及其對碳標
construction industry of Hong Kong. The characteristics of 籤的影響。根據以上之研究成果，研究團隊將建立以
different categories of construction materials and their 香港為本的建築物料碳標籤制度，以作日後各種建築
effects on carbon labelling will then be identified. Based on 物料的碳足跡審計，並制定一套基準機制，根據建築
the results of the preceding stages, the research team will 物料的溫室氣體排放水平而作出分類。為確保所建立
develop a local-based model framework to audit the carbon 的碳標籤計劃可於香港被廣泛採用，務實的策略建議
footprint of various construction materials and devise a 及措施將會提出供業界執行。

Issue No. 5 CIC Newsletter
14 第五期 12 / 2010 建造業議會通訊