The Australian Centre for Construction Innovation; University of New South Wales
Properties of Type GP Cement Concrete Modified with Penetron Admix
Results: It was shown that both concretes had recorded reduced leakage rate through the crack in concrete samples. This is the so-called “autogenous crack healing” capacity of cement concrete due to further hydration of the unhydrated cement particles exposed in the crack zone. However, the Penetron Admix concrete Mix-P had shown significantly higher crack-healing capacity than the control concrete Mix-C. After 70 days exposure to moist atmosphere, the water leakage through the cracks in concrete Mix-P reduced by 73% while that in the control concrete Mix-C reduced by 35%. The greater crack-healing capacity of the concrete Mix-P appears to be primarily attributable to the crystallization mechanism of the Penetron Admix.
ACCI REF. NO.: J#61707
The University of New South Wales: The Australian Centre for Construction Innovation
Testing Properties of a Commercial Concrete Mix Modified with Penetron Admix
Results: Drying shrinkage of the concrete was measured with three prism samples according to AS 1012.13. The monitoring of changes in the specimen length due to drying shrinkage was extended from the normal period of 56 days to 91 days.
TABLE 2. DRYING SHRINKAGE OF CONCRETE (AS 1012.13)
Drying Age (day)
Drying Shrinkage (microstrain)
REPORT NO. 05-4070A
Sor Testing Laboratories, Inc., Cedar Grove, NJ
Laboratory Tests of Penetron Admix in Concrete
Results: As per NY DOT Method of 502-3P, the concrete specimens were subjected to a 3% sodium chloride solution in 25 cycles of freeze thaw. The Penetron Admix treated specimen showed good durability under severe freeze thaw conditions with an average of 0.74% weight loss opposed to the control specimen with a 4.97% weight loss.
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