Testing of industrial products - Aggregates for construction

Symbols

Ab24
Water absorption after 24 hours soaking
C
The average of the friction measurements obtained from PSV tests on four specimens made using the control stone
Cc
Percentage of crushed or broken particles
Ctc
Percentage of totally crushed or broken particles
Cr
Percentage of rounded particles
Ctr
Percentage of totally rounded particles
Cr1
Repeatability coefficient of variation
CR1
Reproducibility coefficient of variation
d
Lower size of an aggregate (mm)
D
Upper size of and aggregate (mm)
F
particle density of an aggregate (kg/m3)
l
liberation factor
f
particle shape factor
g
size range factor
M
Mass of a test portion (kg)
m6 m7
Masses used to determine acid-soluble sulfate
N
Number of laboratories
pp
Pre-dried particle density
pssd
Saturated, surface-dry particle density
PSV
The value derived from PSV tests on four specimens made using an aggregate, corrected using the results of PSV tests on four specimens made using the control stone (PSV = S + 52.5 - C)
r1
Repeatability limit
R1
Reproducibility limit
S
The average of the friction measurements obtained from PSV tests on four specimens made using an aggregate under test
Sr1
Repeatability standard deviation
SR1
Reproducibility standard deviation
SSpec
Between-test-specimen standard deviation
t
Tabulated value of the t-distribution
W
A range
X
A test result, or an average of some test results