![]() ![]() ![]() Lack of instrument sensitivity and the influence of concrete moisture are proposed as two key reasons for this phenomenon. The Autoclam air test is unable to differentiate the differences between HPCs, but the BS-EN water penetration test does.Ībstract While on site measurement of air permeability provides a useful approach for assessing the likely long term durability of concrete structures, no existing test method is capable of effectively determining the relative permeability of high performance concrete (HPC). Drying in an oven at 50 C and 35 RH for 14 days can eliminate the effect of moisture variation on the Autoclam air test. ![]()
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