Technical Data on Resinating Fiberglass Expansion Liners

Below is a summary of some of some of the important technical data that, when combined with the other parameters and process requirements, go to create Resinating Fiberglass Expansion Liners that can be warrantied for 20 years with a useful life that likely extends far beyond that.

Simply stated, Resinating’s Fiberglass Expansion Liners are STRONG!

You are encouraged to review the actual testing reports themselves posted to the left.  The specific data and the actual photos tell quite a story about the strength and durability of the Resinating Fiberglass Expansion Liners.  Those test results are summarized below.

To avoid any confusion, you will see that the tests were conducted for AFE, who Resinating is partnering with, and also in the name of Shumard Corp.  Shumard is the legal corporate name of the company that does business as AFE.

ASTM D497 Tests

On the ASTM D497 tests performed by Applied Technical Services of Marietta, Georgia,  the RCP was made by a major RCP manufacturer.  In these photos showing the test results, you can see the cracks running between each pair of arrows.

Test 1 – RCP alone:  It failed (long crack inside) at about a 7800 pounds/linear foot average load.

Test 2 – Cracked RCP from Test 1 with our liner inside without resin: The RCP had cracks on the outside (inside cracks couldn’t be seen due to the liner) at about 12,000 pounds/linear foot average load. That’s about 54% stronger than Test 1 with the RCP alone.  There were no cracks or damage to the Resinating Fiberglass Liner.

Test 3 – Retest cracked RCP with a new Resinating Fiberglass Expansion Liner epoxied to the inside of the RCP: It generated cracks on the outside of the RCP at about 11,300 pounds/linear foot average load. That’s about 45% stronger than Test 1 with the RCP alone.  There were no cracks or damage to the Resinating Fiberglass Liner.

Test 4 – Resinating Liners tested by themselves: There was no damage noted as the they were compressed up to 6 at about a 1,750 pound/linear foot average load which was the maximum pressure the test equipment could provide.”

View ASTM D497 Test Report

ASTM D790 Tests

On the D790 tests done by Dallas Laboratories, Inc in Dallas, Texas, the strength of two sizes of Resinating Fiberglass Liners was tested vs two sizes of liners from a leading global manufacturer of liners. The D790 test applies pressure as shown in the pictures below to find out the PSI that creates a complete failure in the liner material

D790 Test Setup

Under pressure but not breaking

More pressure…delamination starting as we approach 70,000 PSI and the final breakdown. This is 3 ½ times the pressure that broke the Competitive Liners.

This table below summarizes the overall test results for the liners of a leading global manufacturer versus Resinating liners:

As the test results above show, in the Axial Direction, while the Average Load was approximately the same in all tests before serious damage occurred, in the Transverse Direction, the Resinating Liners handled about 75% more load than the samples from a leading global manufacturer before fracturing.

From a PSI perspective, the Resinating Liner can accommodate approximately 2x the PSI in the Axial Direction and more than 3x the PSI in the Transverse Direction compared to the Competitive Liners before failures start to occur.

View ASTM D790 Test Report


Resinating Fiberglass Liners are extremely strong when compared to any competition.  Combine that strength with the fact that the liners are totally non-porous and impervious to chemical or biological agents and you can think of Resinating’s Liners having the strength to eliminate leakage for a long time beyond the 20-year warranty period.