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Physical Strength Properties of PermaCrete Polymer Modified Cement Surfaces
| PERCENT
OF PERMA.CRETE� POLYMER SOLIDS WHEN MIXED WITH CEMENT |
UNMODIFIED CEMENT | PERMA.CRETE� 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 ----- |
| COMPRESSIVE
STRENGTH, PSI 28 Days Air Cure 28 Days Wet Cure (2) |
2390 5795 |
5690* ----- |
| FLEXURAL
STRENGTH, PSI 28 Days Air Cure 28 Days Wet Cure (2) |
610 1070 |
1835 ----- |
| SHEAR
BOND ADHESION, PSI (3) 28 Days Air Cure 28 Days Wet Cure (2) |
45
(A) 85 (A) |
550
(C) ----- |
| IMPACT
STRENGTH, In. - Lbs. 28 Days Air Cure 28 Days Wet Cure (2) |
6 7 |
22 ----- |
| ABRASION
RESISTANCE, % Wt. LOSS (4) 28 Days Air Cure 28 Days Wet Cure (2) |
23.80 5.07 |
1.57 ----- |
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 25�C and 90% relative humidity
- 6 days water immersion at 25�C
- 7 days at 25�C and 50% relative humidity
- 7 days water immersion at 25�C
- 7 days at 25�C 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.