Answer assessment questions

Below Ground and Remedial Waterproofing 19..... What surface preparation would you carry prior to applying a sealant device to an expansion joint? 20.... What is a backing rod? 21. Which of the following statements is true or false? (tick the correct box) True / False a) Only timber substrates require priming when applying sealant devices ) The primer can be wet when applying sealant devices 1010 0 c) Primers are frequently used to speed up the curing of concrete d) Primers must be dry prior to applying sealant devices e) Some primers can be tacky when applying sealant devices friendly manner? 22....How will you dispose of your surplus materials in a sustainable and environmentally 23....What are the hazards and risks associated with solvent vapour, chemical fumes, gasses, harmful dusts, metal chips, abrasive grit and asbestos fibres? Below Ground and Remedial Waterproofing v1.0 Name Page 10 of 35 10 May