Ann: EdenCrete Project - US Update, page-2

Told ya it leaks.
"EDENCRETETM - US UPDATE
28 DAY RESULTS FROM SECOND GDOT FIELD TRIAL ON I-20
SHOW 26.3% IMPROVEMENT
Perth-based Eden Energy Limited (ASX: EDE) is pleased to announce that the 28 day
compressive strength results from the recent Georgia Department of Transport (GDOT) field
trial of EdenCreteTM enriched concrete on the Interstate Highway I-20 in Augusta, Georgia
showed a 26,3% improvement over the control mix.
28 Day Strength Results from Independent Laboratory Show 26.3% Improvement
The strength results, which now include the results at 28 days, of EdenCreteTM concrete where the
accelerant (calcium chloride) was used, continue the same trend showing that EdenCreteTM concrete
exceeded the compressive strength of the control mixture (with the accelerant but without
EdenCreteTM) by the following:
• At 24 Hours - 32.8%
• At 3 Days - 32.5%
• At 7 Days - 37.1%
• At 28 Days - 26.3%
The concrete mix used in the 28 day tests from the second field trial was made with the addition of a
24-hour chemical accelerant. Accelerants reduce the time required for the concrete to harden, which
is important in enabling GDOT to re-open, for public use, earlier than if the accelerant were not
added, the section of highway that is being repaired. The independent laboratory that conducted the
tests is a GDOT-approved laboratory in Augusta, Georgia.
Further tests are yet to be undertaken at 56 days. Abrasion testing (ASTM C779) in Colorado
at 56 days of age of test cylinders will also take place.
The 28 day results, (which, as with the earlier results at 24 hours, 3 days and 7 days, have been
normalised to adjust for the variations between the various delivered batches in the amount of
contained air in the concrete, which impacts its compressive strength), confirm a trend of increased
compressive strength achieved by the Class 24-Hour Accelerated EdenCreteTM over that of the Class
24-Hour Accelerated Control mixture without added EdenCreteTM
as shown on the chart below.
2
As previously foreshadowed, the magnitude in strength difference did not continue to grow at the
same rate, and may tend to level off further with the 56 days test.
Further, also as previously advised, concurrent tests are also being undertaken by GDOT, using test
cylinders, cast by the independent laboratory.
After normalizing the EdenCreteTM strength data for the varied air content of the control mixture, the
28 day compressive strength measured by the GDOT laboratory shows EdenCreteTM to have
exceeded the compressive strength of the control mixture by 16.2%.
The earlier compressive strength results obtained by the GDOT laboratory showed an improvement
of EdenCreteTM of 40.5% at 24 hours, 25.1% at 3 days, and 26.3% at 7 days, compared with the
strengths measured by the independent laboratory which showed increased compressive strengths of
32.8% at 24-hour, and increases of 32.5% at 3 days and 37.1% at 7 days.
Whilst the improvement in compressive strength of the EdenCreteTM sample in the last three GDOT
laboratory results is less than the comparable results from the independent laboratory, nevertheless
the differences are within the range permitted under the ASTM standards for tests conducted at
different laboratories using the same concrete mix, with both data sets clearly confirming the trend of
the EdenCreteTM concrete significantly out-performing the control mix.
EdenCreteTM I-20 Field Trials
As previously announced (ASX: 27 August 2015 and 17 September 2015), on 26 August 2015 a
second field trial of EdenCreteTM enriched concrete was undertaken on I-20 in Augusta. This trial
involved the pouring of an additional replacement concrete slab on I-20 abutting the first
EdenCreteTM enriched slab poured in the first field trial on 11 August 2015. The concrete used in the
slab included EdenCrete TM and this was compared with the results from a second slab that was
poured using the same concrete mix but with no added EdenCrete TM, giving a basis for comparison
of the benefits EdenCreteTM delivers