STONES Flashcards
1
Q
Geollogical classification of stones
A
igneous
sedimentary
metamorphic
2
Q
physical classification of stones
A
stratified
unstratified
foilated
3
Q
checmical classification
A
silicaeous
agrilacoues
calcareous
4
Q
aggregate impact test
A
measure the resistance to sudden impact or shock
12.5 mm sieve
13.5-14 kg
380mm drop 15 times
5
Q
attrition test
A
resistance power of stone against grinding action
rotated at axis for 5 hrs , 30 rpm
6
Q
los angeles abrasion test
A
hardness of the agregate
20-33 rev per min
1.7 mm sieve
