STP1064: Carboaluminate Reactions as Influenced by Limestone Additions

    Ingram, K
    Graduate student, graduate student, and distinguished research professor, University of North Texas, Denton, TX

    Poslusny, M
    Graduate student, graduate student, and distinguished research professor, University of North Texas, Denton, TX

    Daugherty, K
    Graduate student, graduate student, and distinguished research professor, University of North Texas, Denton, TX

    Rowe, W
    Supervisor, Texas Industries, Midlothian, TX

    Pages: 10    Published: Jan 1990


    Abstract

    The search for less costly alternative materials in the cement industry has led to the proposal for partial substitution of limestone for gypsum. This has led to the need for analysis of the accompanying calcium carboaluminates that form when carbonate is in contact with aluminum bearing species. The extent of formation of this species along with changes in the cement system accompanying their formation are of interest. Powdered X-ray diffraction and Fourier transform infrared were utilized in order to determine characteristics of carboaluminates. Analogies to systems composed of gypsum added to clinker are used to help explain methods of formation of carboaluminates.

    Keywords:

    calcium carboaluminates, X-ray diffraction, Fourier transform infrared, cement


    Paper ID: STP23467S

    Committee/Subcommittee: C01.20

    DOI: 10.1520/STP23467S


    CrossRef ASTM International is a member of CrossRef.