Environmental impact of building materials

Tarja Häkkinen

    Research output: Book/ReportReport

    Abstract

    Methods used for assessing the environmental impact of products comprise "life-cycle assessments" (LCAs) designed to provide information on all the significant environmental effects of products from raw-material extraction and manufacture to end-use and final disposal. The environmental impact of a product is often expressed in terms of an environmental "profile" indicating how the product contributes to changes in the environment, such as global warming or acidification. Research into the environmental impact of building materials and the methods for its evaluation has been carried out at VTT Building Technology Institute. This report discusses the principles and problems of LCA and suggests guidelines for evaluating the environmental impact of building materials. The guidelines are based on the LCA procedure suggested by SETAC. At least the following can be identified as special characteristics or problems in the LCA of building materials: Service life is usually long compared with ordinary consumer goods. The basic materials of building products such as rocky and clay materials, timber and gypsum are largely available. More important than the consumed materials is the means of removal and disposal. A considerable percentage of raw materials can be substituted by waste or co-products. At the same time, large amounts of co-products or re-usable waste of low value are generated in the course of production compared with the quantity of primary product. Thus the principles of allocating environmental burdens significantly affect the results of LCA. Selection of a well-defined functional unit in a building is complicated. Environmental impacts of wooden structural parts in house constructions were studied as a pattern. The environmental profile was calculated and compared with that of heating a small house. Structural timber, roof truss and cladding boards were studied separately. The effects of system boundary and limitations on the results were investigated. The dominate parts in the life span of wooden products were discussed from an environmental point of view.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages39
    ISBN (Print)951-38-4705-5
    Publication statusPublished - 1994
    MoE publication typeNot Eligible

    Publication series

    SeriesVTT Tiedotteita - Meddelanden - Research Notes
    Number1590
    ISSN1235-0605

    Fingerprint

    environmental impact
    life cycle
    timber
    product
    environmental effect
    gypsum
    acidification
    roof
    global warming
    heating
    clay
    material

    Keywords

    • construction materials
    • building components
    • environmental effects
    • environmental surveys
    • life cycles
    • evaluation
    • methods
    • service life
    • life (durability)
    • instructions
    • removal
    • disposal
    • reuse
    • wooden structures

    Cite this

    Häkkinen, T. (1994). Environmental impact of building materials. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1590
    Häkkinen, Tarja. / Environmental impact of building materials. Espoo : VTT Technical Research Centre of Finland, 1994. 39 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1590).
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    Häkkinen, T 1994, Environmental impact of building materials. VTT Tiedotteita - Meddelanden - Research Notes, no. 1590, VTT Technical Research Centre of Finland, Espoo.

    Environmental impact of building materials. / Häkkinen, Tarja.

    Espoo : VTT Technical Research Centre of Finland, 1994. 39 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1590).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Environmental impact of building materials

    AU - Häkkinen, Tarja

    PY - 1994

    Y1 - 1994

    N2 - Methods used for assessing the environmental impact of products comprise "life-cycle assessments" (LCAs) designed to provide information on all the significant environmental effects of products from raw-material extraction and manufacture to end-use and final disposal. The environmental impact of a product is often expressed in terms of an environmental "profile" indicating how the product contributes to changes in the environment, such as global warming or acidification. Research into the environmental impact of building materials and the methods for its evaluation has been carried out at VTT Building Technology Institute. This report discusses the principles and problems of LCA and suggests guidelines for evaluating the environmental impact of building materials. The guidelines are based on the LCA procedure suggested by SETAC. At least the following can be identified as special characteristics or problems in the LCA of building materials: Service life is usually long compared with ordinary consumer goods. The basic materials of building products such as rocky and clay materials, timber and gypsum are largely available. More important than the consumed materials is the means of removal and disposal. A considerable percentage of raw materials can be substituted by waste or co-products. At the same time, large amounts of co-products or re-usable waste of low value are generated in the course of production compared with the quantity of primary product. Thus the principles of allocating environmental burdens significantly affect the results of LCA. Selection of a well-defined functional unit in a building is complicated. Environmental impacts of wooden structural parts in house constructions were studied as a pattern. The environmental profile was calculated and compared with that of heating a small house. Structural timber, roof truss and cladding boards were studied separately. The effects of system boundary and limitations on the results were investigated. The dominate parts in the life span of wooden products were discussed from an environmental point of view.

    AB - Methods used for assessing the environmental impact of products comprise "life-cycle assessments" (LCAs) designed to provide information on all the significant environmental effects of products from raw-material extraction and manufacture to end-use and final disposal. The environmental impact of a product is often expressed in terms of an environmental "profile" indicating how the product contributes to changes in the environment, such as global warming or acidification. Research into the environmental impact of building materials and the methods for its evaluation has been carried out at VTT Building Technology Institute. This report discusses the principles and problems of LCA and suggests guidelines for evaluating the environmental impact of building materials. The guidelines are based on the LCA procedure suggested by SETAC. At least the following can be identified as special characteristics or problems in the LCA of building materials: Service life is usually long compared with ordinary consumer goods. The basic materials of building products such as rocky and clay materials, timber and gypsum are largely available. More important than the consumed materials is the means of removal and disposal. A considerable percentage of raw materials can be substituted by waste or co-products. At the same time, large amounts of co-products or re-usable waste of low value are generated in the course of production compared with the quantity of primary product. Thus the principles of allocating environmental burdens significantly affect the results of LCA. Selection of a well-defined functional unit in a building is complicated. Environmental impacts of wooden structural parts in house constructions were studied as a pattern. The environmental profile was calculated and compared with that of heating a small house. Structural timber, roof truss and cladding boards were studied separately. The effects of system boundary and limitations on the results were investigated. The dominate parts in the life span of wooden products were discussed from an environmental point of view.

    KW - construction materials

    KW - building components

    KW - environmental effects

    KW - environmental surveys

    KW - life cycles

    KW - evaluation

    KW - methods

    KW - service life

    KW - life (durability)

    KW - instructions

    KW - removal

    KW - disposal

    KW - reuse

    KW - wooden structures

    M3 - Report

    SN - 951-38-4705-5

    T3 - VTT Tiedotteita - Meddelanden - Research Notes

    BT - Environmental impact of building materials

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Häkkinen T. Environmental impact of building materials. Espoo: VTT Technical Research Centre of Finland, 1994. 39 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1590).