This standard outlines the code of practice for the preparation, laying, and curing of lime concrete in building construction. It provides essential guidelines on material selection, proportioning, and mixing techniques, primarily for use in foundation bases, under-floors, and roof terracing.
Code of practice for preparation and use of lime concrete
Quick Reference Values
Extra lime required for hand mixing10%
Minimum curing duration7 to 14 days
Max coarse aggregate size for foundation40 mm
Max coarse aggregate size for roof terracing25 mm
Maximum thickness of unrammed layer150 mm
Practical Notes
Lime concrete gains strength slowly; therefore, curing must be maintained strictly for at least 7 to 14 days using wet gunny bags or damp sand without letting the surface dry out.
Thorough compaction with wooden rammers is essential and must continue until a thin film of lime mortar cream rises to the surface.
Mechanical mixing using a pan mixer is highly recommended; if hand mixing is unavoidable, an additional 10% lime should be used.