Concrete levelling scraper jig has guide rollers resting on kerbstone and side-frame with scraper blade

摘要

During a construction operation a layer of concrete is laid down alongside a horizontal structure e.g. a roadside kerb stone. The concrete is spread and flattened to the correct height by esp. a rolling jig with a frame (1) and rollers (6, 17). The frame has an angled scraper blade (12) spreading the concrete. The jig frame uses the kerb stone as a directional and height guide.