In our Specification there is a requirement which says, ‘the aggregate shall meet the sand equivalent (clay content)requirements… minimum sand equivalent percent 40 …’. If we see the sand equivalent formula, which is 100*sand reading/ clay reading, the higher the sand reading during testing...
I recently tested MC - 70 (Medium curing cutback) using saybolt viscometer. I got a result of efflux time of 50 sec @ 50 oC temp.; while the Specification says 60-120 sec.
Using a conversion table of Furol to kinematic viscosity; the 50 sec is approximately equal to 105 Centistokes and for MC -...
