STP1494

    Natural Cement in the 21st Century

    Published: Jan 2008


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    Abstract

    Natural cement, the predominant hydraulic binder of the 19th century, has re-emerged in the 21st century as a restoration material. Engineers, architects, conservators, and owners must be able to rely upon modern natural cements to meet the same performance criteria as historic cement materials. In addition to the performance criteria, natural cement must provide the working characteristics demanded by contemporary tradespeople and the aesthetic results expected in high-quality historic restoration work. Historic standards for natural cement are reviewed and criteria used in developing the recently reinstated ASTM C 10 Standard Specification for Natural Cement are discussed. Recent research into the effectiveness of set and flow modifying admixtures with natural cement is presented, as well as an overview of producing color matches for natural cement mortars and stuccos.

    Keywords:

    natural cement, historic cement, standardization, time of setting, color matching


    Author Information:

    Edison, Michael P.
    Edison Coatings, Inc., Plainville, CT


    Paper ID: STP45745S

    Committee/Subcommittee: C01.13

    DOI: 10.1520/STP45745S


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