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17th March 2008, 03:58 PM #1
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Anyone used recycled concrete in ag drains?
Just reading up on ag drains and its seems a lot of people are using re cycled concrete instead of BMG as an aggregate in ag-drains. Have been reading about the effects of the lime in the re cycled concrete on surrounding gardens. Anyone used re- cycled concrete as an aggregate? Had any problems with the lime changeing the pH level of the soil?
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17th March 2008, 05:00 PM #2
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There shouldn't be lime in concrete
c2=a2+b2;
When buildings made with lime are subjected to small movements thay are more likely to develop many fine cracks than the individual large cracks which occur in stiffer cement-bound buildings. Water penetration can dissolve the 'free' lime and transport it. As the water evaporates, this lime is deposited and begins to heal the cracks. This process is called autogenous healing.
