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    Evaluation of Injectable Cementitious Grouts for Repair and Retrofit of Masonry

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    Injection of grout into cracks may be used as a form of repair following a damaging event or as a means to strengthen multi-wythe masonry, enhancing composite action between the wythes. An experimental program has been conducted to evaluate grouting procedures, the suitability of different types of cementitious grouts for injection, and the effect of grout injection on structural behavior.

    Over 30 separate mixes utilizing various cementitious components, aggregates, admixtures and different water/cement ratios have been evaluated. A standardized series of evaluation tests have been used to compare injectability, mix stability, and grout properties for each of the mixes. These grouts possess properties similar to the masonry being repaired, and would be available for widespread use as a material for masonry repair. An additional contribution of this research has been the application of nondestructive techniques as a means of measuring quality of the injection process.


    masonry repair, grout injection, cementitious grout, admixtures, material behavior, nondestructive testing

    Author Information:

    Atkinson, RH
    Atkinson-Noland & Associates, Inc., Boulder, Colorado

    Schuller, MP
    Atkinson-Noland & Associates, Inc., Boulder, Colorado

    Committee/Subcommittee: C12.05

    DOI: 10.1520/STP19626S