Physical Strength Properties of PermaCrete Polymer Modified Cement Surfaces

PERCENT OF PERMACRETE ®
POLYMER SOLIDS WHEN MIXED WITH CEMENT 		UNMODIFIED CEMENT PERMACRETE ® MATRIX MIX
0 0.20
RATIO OF WATER TO CEMENT (1) 0.48 0.35
TENSILE STRENGTH, PSI
28 Days Air Cure
28 Days Wet Cure (2) 		235
535 		855
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COMPRESSIVE STRENGTH, PSI
28 Days Air Cure
28 Days Wet Cure (2) 		2390
5795 		5690*
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FLEXURAL STRENGTH, PSI
28 Days Air Cure
28 Days Wet Cure (2) 		610
1070 		1835
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SHEAR BOND ADHESION, PSI (3)
28 Days Air Cure
28 Days Wet Cure (2) 		45 (A)
85 (A) 		550 (C)
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IMPACT STRENGTH,
In. - Lbs.
28 Days Air Cure
28 Days Wet Cure (2) 		6
7 		22
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ABRASION RESISTANCE, % Wt. LOSS (4)
28 Days Air Cure
28 Days Wet Cure (2) 		23.80
5.07 		1.57
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  1. The water content of the mortars was adusted to provide equivalent workability, i.e., the polymer modified mortars were prepared at water contents necessary to give the same slump diameter which was equivalent in workability to the unmodified mortar controls at 48 percent water content. This procedure in the ASTM "Flow Table" test #C-230-61T.
  2. Wet Curing Conditions
    • 1 day at 25ºC and 90% relative humidity
    • 6 days water immersion at 25ºC
    • 7 days at 25ºC and 50% relative humidity
    • 7 days water immersion at 25ºC
    • 7 days at 25ºC and 50% relative humidity
  3. Adhesive failure indicated by (A) - Cohesive failure indicated by (C)
  4. Lower values indicate better abrasion resistance

*6000+ compressive strength is achieved after final applications of PermaCrete Acrylic Sealers.