The contractor carried out investigation works before removal of defective concrete from the training tower. Steel reinforcement bars were cleaned, and Ronacrete Standard Primer was applied to the prepared bars. The areas to be reinstated were primed with Ronacrete Standard Primer, and the concrete was repaired using RonaBond Concrete Repair Mortar. Ronacrete Curing Membrane was spray applied to the fresh mortar, to prevent rapid surface moisture loss.
Rendered rear boundary wall
Prior to undertaking brick and render repairs to the rear boundary wall, vegetation was cut back and the wall was cleaned, to remove all surface dirt and debris. All cables were temporarily removed from the wall surface, existing render was hacked off, and the wall was dismantled. The original bricks were re-used to rebuild a 2m x 1.5m section of wall at parapet level. The wall was rendered with Ronafix Mix A Weatherproof Render incorporating a bell cast drip. Ronafix Slurry Coat was applied to the prepared wall. Two coats of RonaBond Masonry Coating WB, high opacity, water-based coating were applied to the finished surface.
Unrendered rear boundary wall
The contractor cut back the vegetation and cleaned the wall, to remove all surface dirt and debris. Joints were raked out to a depth of 25mm, and re-pointed using a 4:1 sand and cement mortar. A section of bowed wall at parapet level was dismantled and rebuilt. Ronafix Slurry Coat was applied to the prepared wall and the finished surface was coated with RonaBond Anti-Carbonation Coating WB.
Aggregate is usually 0–4 mm and is mixed with cement in the ratio of 1:3 or 1:4 cement to sand, depending on strength requirements and drying requirements. For total screed thicknesses in excess of 50 ...Read more