Ready Mix Concrete (RMC) Customer Check List

1	Raw Material	Test Certificates Available
2	Job Mix Formula	Meets requirement in terms of ·         Strength ·         Workability ·         Cohesiveness ·         Place ability
3	Batching Plant	·         Calibration done ·         Yield checked ·         Minimum 30 mixing time ·         Batch sheet furnished
4	Transit mixers	·         Reach site agitation mode ·         Drum rotated at full speed for 20 before discharging ·         No site addition of water (Re-tempering) into drum ·         Does chemical admixture (re-dosing) and mix at full speed if workability is low ·         Trip sheet furnished and observations recorded
5	Concrete pump	·         Sufficient pipeline to place at required area ·         Located at a point accessible to transit mixer ·         No addition of water or slurry into the pump hopper (Re-tempering) once concrete pumping starts ·         Agitator in working condition
6	Sampling	·         Concrete taken from same vehicle and mixed well ·         Workability in terms of slump or flow checked ·         Cube moulds are at right angles and accurate ·         Cube moulds cast at location mutually agreed upon ·         Required cube moulds filled simultaneously in layers and compacted
7	Testing	·         Slump or flow test done randomly for field control ·         Cubes tested for compressive strength at laboratory ·         Cube testing machine is calibrated and in good condition ·         Test report furnished with slump observed in field and ultimate compressive strength at 7 & 28 days
8	Acceptability	·         Intimated about precaution to avoid plastic shrinkage cracks (Delayed finishing / Early curing) ·         Cement content and type in accordance with job mix formula ·         Workability as agreed upon mutually ·         Strength >value agreed upon or characteristic strength, as appropriate
Formwork, Rebar, Cover, Embedment, Pipeline Support, Compaction, Finishing, Curing & Allied Works My Responsibility