It turned out that the crew didn't stay as late as they originally said and that it did in fact rain that evening which caused the damage to the surface. Thanks for your input everyone.
Concrete that was poured and vibrated with a vibrating poker on a dry Friday had by Saturday shown bad patches where concrete surface seemed to have peeled very badly. The surface of the footpath was covered in a light dust which had brushed off the surface of the concrete. I am trying to...
Can anyone tell me if it is possible to mechanically join a hppe pipe. We have been instructed to use the HPPE pipes by a client but told not to weld the joints. Some suppliers say they must be welded, others say not. does anyone have any experience of using these pipes without welding?? the...