Title: Thin Concrete Topping Restores Old Pavement
Author(s): H. Walter Hughes
Publication: Journal Proceedings
Appears on pages(s): 653-659
Keywords: no keywords
Lack of information on bonding new concrete to old led to laboratory bonding tests on wet and dry surfaces. Favorable results led to experiments on topping concrete raod slabs, which required special techniques in bonding, screeding, compacting and finishing. No sign of surface disentigration has been observed after six years on any of the sections. Results indicate that the use of low water-cement ratio, graded mixes and compaction gives ample bond for thin toppings of floors or badly scaled pavements in which the concrete is sound. Concrete pavements containing low durablity aggregates can also be given durable wearing surfaces with thin high-grade toppings.