PSV	polished stone value
SEM	scanning electron microscopy
LAA	Los Angeles test
h	macrotexture height of the aggregate
h s	initial maximum macrotexture height
h t	the macrotexture height of the aggregate surface at time t
t	polishing time
D	fractal box dimension of the initial aggregate surface
K	a constant related to the equipment conditions during aggregate wear
P t	polished value at time t
P s	polished value for hs
P 0	total friction coefficient of the aggregate at t = 0
P x	polished value owing to the microtexture
P ∞	polished value when time t→∞
H v	Vickers hardness of the aggregate
b0, b1	adjustment coefficients related to the test environment and polishing conditions
a0, a1	adjustment factors
R	correlation coefficient
t 0.05	macrotexture service life
t 0.5	macrotexture service half life