REHABILITATION OF MASONRY COLUMNS USING CARBON FIBRE WRAPS

Mark J. Masia^[1], Nigel G. Shrive^[2], D. Tilleman^[3]

1. Postdoctoral Research Assistant, Department of Civil Engineering, University of   Calgary, 2500University Drive NW, Calgary, AB, Canada, T2N 1N4 (masia@ucalgary.ca)
2. Killam Memorial Professor, Department of Civil Engineering, University of Calgary,   2500 University Drive NW, Calgary, AB, Canada, T2N 1N4 (shrive@ucalgary.ca)
3. Laboratory Technician, Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada, T2N 1N4

Abstract

The use of carbon fibre reinforced polymer (CFRP) wrapping to strengthen existing masonry columns was investigated experimentally. The study was aimed at quantifying the

increase in strength that can be achieved and assessing the effect of column size on the strength increase.

18 columns were tested, of three different cross sectional sizes and two different types of masonry unit. Strengthening was achieved bywrapping the square section columns directly

with CFRP sheets, or by wrapping the columns after first casting a circular concrete jacket

around the column. Significant strength increases were achieved, particularly in the latter case.

These preliminary tests indicate that the use of CFRP wrapping is effective as a technique for rehabilitating damaged masonry columns.

Keywords: Masonry, columns, rehabilitation, strengthening, CFRP

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