BS 8500 was revised in 2015 and the relevant advice for the cover to reinforcement of concrete in the ground clarified.
Should kickers be cast with the same strength concrete as the walls?
Electrical conductivity is important in some specific applications such as railway sleepers (where resistivity can affect signalling systems) or in structures where concrete is used for protection from stray currents.
Due to the variability of aggregates (sands and gravels) throughout the UK and the variability of cements and additions, Further variability arrises with water content and the use of admixtures to achieve the required consistence (workability) i.e. slump.
The Concrete Society is a membership organisation serving the construction industry and as such we can not carry out visits to assess problems with domestic concrete driveways.
Not all the construction water used in concrete to make it workable is used in the hydation process. Much evaporates with time as the concrete dries out. But how much is held in the concrete? The following is a simple calculation, but the actual amount will depend on the environment in which the concrete is situated.
This is wide ranging subject area which covers inherent defects, unforeseen problems, workmanship errors, damage and subsequent repair.
This is wide ranging subject area which covers almost any process that requires the connection of more than one element to form a structure or part structure.
This is a wide ranging subject area which covers mineral extraction and processing through to construction issues, building energy consumption, demolition and recycling.