In-place Stabilisation Of A Stone Masonry Facade


A 100-year old stone masonry facade was visibly displaced and in danger of collapse due to inadequate support, poor initial construction, moisture infiltration, and related freezing action. Rather than demolish and rebuild the facade, a scheme was developed for in-place stabilisation using a combination of shoring, grout injection, and anchoring.  A cementitious grout was used to fill internal voids and stabilise the facade to the shear walls, followed by installation of a series of 1.6 m anchors tying the facade to the shear walls.  Nondestructive testing by ultrasonic pulse velocity measurements was used to characterise the masonry prior to work and to verify the effect of grout injection following stabilisation. This project showed that severely damaged walls can be saved from  demolition with the careful application of appropriate techniques and associated quality control testing.  Abstract  only.

Primary author(s): Schuller M; Ruth W

                            Atkinson-Noland & Associates Inc.; Masonry Solutions Inc.

Source: 12th Int.Brick/Block Masonry Conf. Proc. Vol.III

            Madrid,25-28 June 2000,p.1623

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