2.)      MIX NO.

1

2

CEMENT

752

705

SILICA FUME

N/A

35#

SAND

1135

1150

STONE

1930

1930

LBS OF WATER

292

298

W.R.D.A.-HYCOL

28.0 OZ.

28.0 OZ.

SLUMP

3.25"

2.5"

W/C RATIO

0.388

0.402 (W/C+SF)

7 DAY P.S.I. AVERAGE

5412

5743

28 DAY P.S.I. AVERAGE

6732

7310

Negligible

NOTE: All Materials and Procedures used in the mix designs were in accordance or conformance to the requirements of the American Society of Testing Materials.

3) All concrete cylinders were cast 12/10/90 (refer to mix design), cured for 28 days and then slurry coated with Penetron (as per standard Penetron application specification). After coating, the cylinders were allowed to cure for an additional 14 days.
At the end of this period the cylinders were immersed in three (3) separate vessels containing (1) Motor oil (10w40), (2) Diesel Fuel #2 and (3) 87 Octane Gasoline.

4)At approximately 90 day intervals, sample cylinders were removed and saw-cut to determine permeability of petroleum products, while others were checked for strength and abrasion qualities. This process continued for a period of 18 months. Individual test results are shown in Item #2 of this report.

5)This continuous testing demonstrated the full range of protection provided by the Penetron system. Specimen cylinders showed no loss of strength, abrasion resistance or breakdown due to permeability and/or exposure to the petroleu products.

6) Conclusion: Testing demonstrates that Penetron effectively protects concrete exposed to petroleum products.