Thermally Insulating Foundations and Ground Slabs Using Highly-Foamed Concrete

    Volume 1, Issue 6 (June 2004)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 7 June 2004

    Page Count: 13


    Jones, MR
    Head, Division of Civil Engineering, University of Dundee, Dundee, Scotland

    Giannakou, A
    Research Fellow, Concrete Technology Unit, Division of Civil Engineering, University of Dundee, Dundee, Scotland

    (Received 23 April 2003; accepted 24 September 2003)

    Abstract

    Foamed concrete, comprising a cementitious paste or mortar together with preformed foam, has many attractive properties, perhaps the most useful being its excellent thermal insulation properties, and therefore it can be classified as controlled thermal fill (CTF). Although widely used as a simple backfill, foamed concrete can be designed easily for particular densities (800–1600 kg/m3), flow characteristics (100–300 mm spread), strength (typically less than 10 MPa), and thermal insulation performance (0.2–0.6 W/mK). These properties make it an ideal material for house construction, in particular, for enhancing the thermal efficiency of the foundations and ground slab. This paper examines the performance of a range of foamed concretes for trench fill foundations and ground slabs in terms of thermal performance and main engineering, permeation, and durability properties. The consonant advantages of using fly ash (low-lime, fine, and coarse) technology will also be discussed.


    Paper ID: JAI11879

    DOI: 10.1520/JAI11879

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    Author
    Title Thermally Insulating Foundations and Ground Slabs Using Highly-Foamed Concrete
    Symposium Innovations in Controlled Low-Strength Material (Flowable Fill), 2003-06-10
    Committee D18