Suggested Format for Detailed Clinker Examination

Megascopic properties— hardness, color, porosity, shape note variations in these properties within and between clinkers and establish predominant characteristics agglomerated or single nodules. 

Size variation—if sieving is impractical, estimate the following, in metric terms, from a random sample  

16th and 84th percentiles—determine which clinker diameter has 1 /6 of the clinker diameters larger than itself. . . this is the 84th percentile diameter on a cumulative percent- 

Percentage (state method, such as point coimt, line count, etc., if other than estimation with comparison charts). 

Occurrence and distribution pattern—uniformly, randomly, or patchily distributed occurrence near or in pores, near certain otiier phases, clinker core, shell, sharply bounded groups (nests) of crystals, diffuse boundaries, and so on. 

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