What it is
Fine aggregate is mixed with the specified solution and the developed colour is compared with a standard.
SANAS T1018
Public test guide
Screens sand for organic matter that may interfere with cement hydration or concrete performance.
Plain-language explanation
The project specification controls the exact method and acceptance requirement.
Fine aggregate is mixed with the specified solution and the developed colour is compared with a standard.
Fine aggregate, test bottle, specified solution and colour reference.
Whether the colour response exceeds the method’s screening reference.
Identifies material that may require further assessment before use in concrete or mortar.
Typical test sequence
Prepare the sand and solution in the test container
Shake and allow the mixture to stand
Compare the colour with the prescribed reference
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