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ASTM C604 – Standard Test Method for True Specific Gravity of Refractory Materials by Gas-Comparison Pycnometer


This test method covers the determination of the true specific gravity of solid materials, and is particularly useful for materials that easily hydrate which are not suitable for test with Test Method C135. This test method may be used as an alternate for Test Methods C135, C128, and C188 for determining true specific gravity.


aggregate reactivity; alkali; alkali-silica reactivity; concrete aggregates


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