Table 5.

Expansion of the accelerated mortar bar test at 30 days.

Sample	30-Day Expansion (%)	ASTM C 1260 Classification	Quartz Quantity (%)
Reactive quartzite	0.36	Potentially reactive	93.5
Reactive mylonite	0.28	Potentially reactive	14.9
Innocuous granite	0.08	Potentially innocuous	23.9
MB granite	0.16	Potentially reactive	37.6
MB protomylonite	0.17	Potentially reactive	28.7
MB orthomylonite	0.15	Potentially reactive	33.3