Table 8. Characteristics and tests of aggregates. 









Requirement of 



Characteristic 



Significance 



ASTM Standard 



item reported 



Resistance to 



Index of aggregate 



C131 



Maximum percent- 



abrasion 



quality; wear resis- 



C295 



age of weight 





tance of floor 



C535 



loss 





pavements 







Resistance to 



Surface scaling, 



C295 



Maximum number 



freezing and 



roughness, loss of 



C666 



cycles or period 



thawing 



section, and un- 



C682 



of frost immunity; 





sightliness 





durability factor 



Resistance to 



Resistance to 



C88 



Weight loss, par- 



disintegration 



weathering action 





ticles exhibiting 



by sulfates 







distress 



Particle shape 



Workability of 



C295 



Maximum percentage 



and surface 



fresh concrete 



D3398 



of flat and elon- 



texture 







gated pieces 



Grading 



Workability of 



C117 



Minimum and maxi- 





fresh concrete; 



C136 



mum percent 





economy 





passing standard 

 sieves 



Bulk unit 



Mix design calcula- 



C29 



Compact weight 



weight or 



tions; classifica- 





and loose weight 



density 



tions 







Specific 



Mix design calcula- 



C127, 



- 



gravity 



tions 



fine aggregate 



C128, 

 coarse aggre- 









gate 



C29, slag 





Absorption 



Control of concrete 



C70 





and surface 



quality 



CI 27 





moisture 





CI 28 



C566 





Compressive 



Acceptability of 



C39 



Strength to 



and flexural 



fine aggregate fail- 



C78 



exceed 95 percent 



strength 



ing other tests 





of strength 

 achieved with 

 purified sand 



Definitions of 



Clear understanding 



C125 



- 



constituents 



and communications 



C294 





80 



