Influence of the design materials on the mechanical and physical properties of repair mortars of historic buildings

P. Manita, Thanasis Triantafillou

    Research output: Contribution to journalArticle

    Abstract

    Historic buildings are subjected to deterioration by natural weathering or by corrosion due to polluted atmosphere and the materials more susceptible are the mortars used. This study examines the influence of the type and quantity of design materials on compressive strength, creep, water absorption and length change of repair mortars produced. The design materials used were lime, natural pozzolan, sand and brick fragments in order to obtain the compatibility required between historic and repair mortars; different quantities of Portland cement were also used in order to quantify his influence. Nine mixtures were then designed and produced considering as parameters two binder: aggregates ratios, three pozzolan: cement ratios and three sand: brick fragments ratios. The experimental measurements continued until the age of 3 years or the stabilization of the test values. The results indicate that compressive strength is strongly affected by cement content and aggregates dosage and type. It appears that the increase of cement as well as brick fragments leads to confinement of creep deformation, while the mixtures with high pozzolan and sand content experience considerably high creep values. Water absorption reaches higher values when pozzolan or aggregate dosage arises and brick is in excess. Shrinkage increases when binder or brick quantity arise and is considerably influenced by cement content.

    Original languageEnglish (US)
    Pages (from-to)1671-1685
    Number of pages15
    JournalMaterials and Structures/Materiaux et Constructions
    Volume44
    Issue number9
    DOIs
    StatePublished - Nov 1 2011

    Fingerprint

    Pozzolan
    Brick
    Mortar
    Repair
    Physical properties
    Cements
    Mechanical properties
    Creep
    Sand
    Water absorption
    Compressive strength
    Binders
    Portland cement
    Weathering
    Lime
    Deterioration
    Stabilization
    Corrosion

    Keywords

    • Compressive strength
    • Creep coefficient
    • Length change
    • Lime
    • Long-term measurements
    • Pozzolan
    • Repair mortars of historic buildings
    • Water absorption

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • Materials Science(all)
    • Mechanics of Materials

    Cite this

    Influence of the design materials on the mechanical and physical properties of repair mortars of historic buildings. / Manita, P.; Triantafillou, Thanasis.

    In: Materials and Structures/Materiaux et Constructions, Vol. 44, No. 9, 01.11.2011, p. 1671-1685.

    Research output: Contribution to journalArticle

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