- Ensure curing of the concrete is carried out in accordance with the Operation Plan and does not affect concrete finish.
- If curing compound spray is to be used:
- On a horizontal surface, apply as soon as possible after the initial bleed water has evaporated.
- On vertical surfaces, apply as soon as possible after the formwork has been struck.
- Do not use on dry surfaces, wet with clean water and spray while moist.
- Do not apply on top of water.
- If polythene, damp hessian or frost blankets are to be used, ensure that a chilling wind tunnel is not created. Any hessian must be kept damp at all times.
- Take care not to touch the formwork or splash nearby works such as parapet rail or bolt threads.
- If the formwork is to be retained during curing:
- Check formwork temperatures during cold or windy weather, it may be necessary to lag to retain heat.
- Do not strip until the required strength has been achieved and a Permit to Unload has been issued.
- Beware of cube strengths resulting from unrepresentative curing and remember that seven-day strengths are only indicative of final values.
- Before stripping formwork, agree a suitable laydown area or transport to the correct location. Do not place in a heap.
- Carry out all post concrete checks and cover surveys at the earliest opportunity, especially when similar pours are to follow.
