Client ICS/Penetron International Ltd., 45 Research Way, Suite 203, East Setauket, NY 11733
Project Information of Client
Subject Laboratory Testing of the effects of Penetron Treatment on the compressive Strength of Concrete

• Report No 93-4559 Date 11 /22 /93

At the request of the Client, laboratory tests were performed to determine the effects
of Penetron treatment on the compressive strength of concrete.

I. CONCRETE MIX DESIGN
The concrete mix design used for this purpose consisted of the following ingredients:

(*) New Cem is a slag cement sold by Blue Circle Co.

Sand and coarse aggregates were SSD basis.

II. PROCEDURES

By using this mix design, a total of 12 6 x 12 inch concrete cylinders were prepared. After the initial set was achieved, the surface of six of the concrete cylinders were coated with the Penetron which was sprinkled and brushed onto cylinders top surface and worked into the concrete by wood floating.

The Penetron mix used was:
2 parts Penetron
0.8 parts water

It should be noted that after removal from the molds, the opposite end of the cylinders was also treated with Penetron by brush application. The rate of application of Penetron for each surface was approximately 2.5 lbs. per square yard area.

Both the treated and untreated (control) cylinders were placed into the controlled conditions (73 IF and 100% humidity). At the end of 7, 14 and 28 days, the cylinders were tested for compressive strength. The test results were as follows.

III. COMPRESSIVE STRENGTH

A. Penetron Treated

B. Untreated (Control)

IV. CONCLUSIONS

According to these tests results, treating concrete surface with Penetron resulted in a slight increase in the compressive strength of the concrete.