UA's pore press was finally put to use for the first time today. We expressed pore solution from two of Stephanie Wood's autoclaved concrete prism specimens. The photo shows the original concrete (actually mortar) that was compressed at 100,000 psi.
The pore press is a high-strength steel die used to express (squeeze out) the pore solution of concrete in determine to study its chemistry and pH. Studying pore solution is an analytical technique that can provide insight into the cement hydration process and the progression of various forms of chemical attack such as ASR or sulfate attack.
Today's experiments were for the purpose of determining the fate of alkalis in the autoclaved concrete prism test, an ultra-accelerated test for alkali-silica reactivity of aggregates.
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