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The test is essentially non-destructive, since concrete and structural members can be tested in situ, with only minor patching of holes on exposed faces. The rebound hammer is a surface hardness ...

Additionally, Rebound Hammer test results further support the enhanced quality of geopolymer aggregate concrete. However, the porosity of geopolymer aggregates results in a sorptivity that is 10%–30% ...

Pfizer’s study was not designed to study rebound and its scientists only tested participants three times: at days five, 10 and 15 after the first positive COVID-19 test. When Siedner and this ...

This paper addresses the use of the rebound test for the technological control of concrete applied ... In both phases, the steel plunger of the rebound hammer was positioned in the gravity direction.