STP266

    Introduction to Producers' Papers on Water-Reducing Admixtures and Set-Retarding Admixtures for Concrete

    Published: Jan 1960


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    Abstract

    Water-reducing admixtures and set-retarding admixtures are defined and the functional difference between them explained. The products of the four producers are divided into four chemical classifications, (1) lignosulfonic acids and their salts; (2) modifications and derivatives of lignosulfonic acids and their salts; (3) hydroxylated carboxylic acids and their salts; (4) modifications and derivatives of hydroxylated carboxylic acids and their salts. The four papers of the producers' group are concerned only with products falling within this classification.

    A brief explanation of the function and mechanism of the actions of such admixtures in portland-cement concrete is suggested and discussed as it applies to this series of papers

    The final section of this paper points out the significance of the design and quality control exercised by the producers to insure the functional performance of these admixtures. Particular emphasis is placed on this portion of tin-paper because of its importance to the consumer.


    Author Information:

    Prior, ME
    Technical Service Manager and Research Manager, W. R. dace & Co., Cambridge, Mass.

    Adams, AB
    Technical Service Manager and Research Manager, W. R. dace & Co., Cambridge, Mass.


    Paper ID: STP39575S

    Committee/Subcommittee: C09.48

    DOI: 10.1520/STP39575S


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