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Automated laboratory testing methods for specific gravity and absorption verified to match the current method results
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Automated laboratory testing methods for specific gravity and absorption verified to match the current method results
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Description
Title
Automated
laboratory
testing
methods
for
specific
gravity
and
absorption
verified
to
match
the
current
method
results
Subject
TE716.O3
A37
no
.
09-3
;
TA441.R355
2009x
;
Aggregates
(Building
materials)--Testing.
;
OTP
1.23/7:2009-03
Description
Cover
title.
; "
June
2009.
"; "
Report
no
.
FHWA/OH-2009/3"--Technical
report
documentation
p.
;
Includes
bibliographical
references
(p
.
54-55).
;
Final
report.
;
Prepared
by
Infrastructure
Management
and
Engineering
Inc.
,
sponsored
by the
Ohio
Dept
. of
Transportation
in
cooperation
with the
Federal
Highway
Administration
under
state
job
no.
;
Harvested
from the
web
on
1/6/10
Creator
Rajagopal
,
Arudi
.
Publisher
Infrastructure
Management
and
Engineering
Inc.
;
Available
through
the
National
Technical
Information
Service
Contributors
Infrastructure
Management
and
Engineering
Inc.
;
Ohio
.
Dept
. of
Transportation.
;
United
States
.
Federal
Highway
Administration
.
Type
Text
Language
eng
Relation
Also
available
online.
;
http://www.dot.state.oh.us/Divisions/TransSysDev/Research/reportsandplans/Reports/2009/Pavement/134302_FR.pdf;
http://worldcat.org/oclc/432311925/viewonline
Description-Abstract
Twenty
six
coarse
aggregate
(12
gravel
,
10
lime
stone
,
4
slag)
and
nine
fine
aggregate
(4
lime
stone
,
3
natural
sand
,
2
slag
sand)
materials
were
collected
from
various
sources
in
Ohio
.
Specific
gravity
and
water
absorption
of the
coarse
aggregate
samples
were
determined
using
CoreLok
and
ASTM
C
127
procedures
while
testing
of
fine
aggregate
samples
involved
CoreLok
,
SSDetect
and
ASTM
C
128
procedures
.
All
the
tests
were
performed
in a
single
laboratory
and by the
same
technician
. The
primary
intent
of the
study
was to
investigate
the
ability
of
CoreLok
and
SSDetect
to
obtain
faster
results
while
, at the
same
time
,
improving
the
accuracy
of
results
. The
results
led
to the
following
conclusions
:
Coarse
Aggregates
:
CoreLok
bulk
specific
gravity
(Gsb)
values
are
up
to
8%
higher
than the
ASTM
C
127
Gsb
values
. The
difference
between
the
corresponding
apparent
specific
gravity
(Gsa)
values
vary
from 0 to
12%
. The
CoreLok
absorption
values
are
1
to
81%
lower
except
for
two
slag
samples
. These
differences
are
statistically
significant
at
95%
confidence
interval
.
Fine
Aggregates
: The
SSDetect
Gsb
results
closely
follow
the
ASTM
C
128
values
.
CoreLok
Gsb
values
are
moderately
higher
than
ASTM
and
SSDetect
for
natural
sand
, but
lower
for
slag
.
Gsa
results
of
all
the
three
test
procedures
follow
each
other
closely
. These
differences
are not
statistically
significant
. The
difference
in
absorption
values
between
CoreLok
and
ASTM
C
128
procedure
ranges
from
1.5%
to
243.7%
. In
case
of
SSDetect
vs
.
ASTM
, this
difference
is
0.9%
to
124.2%
. An
in-depth
absorption
study
of
coarse
aggregates
using
CoreLok
highlighted
some
inconsistencies
in the
procedure
. The
principal
recommendation
of the
study
for the
Ohio
Department
of
Transportation
is
to
continue
specific
gravity
and
absorption
tests
of
coarse
and
fine
aggregates
using
the
traditional
ASTM
procedures
.
Date-Issued
2009]
Format-Extent
69
p
. :
ill
. ;
28
cm
.
Format-Medium
Government
Publication
OCLC number
432311925
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