Provided by MMFX Technologies

Test Results & Approval Status

TEES and the ACT (Accelerated Chloride Threshold) test

Currently no standardized test exists to quantitatively provide a corrosion resistance comparison of concrete reinforcement products.  MMFX recognizing the need to establish a quantitative corrosion measurement engaged the services of Dr. David Trejo at Texas A&M University to establish a test method for that purpose.  Testing at TEES established the parameters for the ACT test procedure and has provided a quantitative comparison of the corrosion resistance of MMFX Steel to conventional carbon steels (i.e. A615) used in reinforced concrete applications.  The ACT test measures corrosion resistance by measurement of the concentration of chloride ions that initiate corrosion of reinforcing steels in reinforced concrete structures.  Following is a current summary of the results of the TEES ACT testing program.

ACT Corrosion Test Results

Notes:
    A.  Results from Life 365^® – Norfolk, VA, Surface Concentration (wt%) = 0.56 @ 40 yrs., Diffusion Coefficient D₂₈ = 4.63x10^-12.
    B.  Value based on results from 8 test samples
    C. Value based on results from 11 test samples; consistent with published A615 threshold values

HITEC MMFX Product Evaluation

In 2000 MMFX applied to have a HITEC Product Evaluation made to assess the corrosion resistance of its Microcomposite Steel rebar in reinforced concrete applications.  During June 2002 the HITEC panel members approved MMFX’s HITEC Evaluation Plan.  Currently the Initial HITEC MMFX Product Evaluation is anticipated to be completed during the last quarter of 2002.

Evaluation Program ACT Round Robin Testing

Four state departments of transportation (DOTs -- CALTRANS, PENNDOT, Texas DOT and Virginia DOT) have initiated corrosion testing of MMFX rebar along with other reinforcing steel materials using the ACT test method.  Test results from this ACT Round Robin Testing Program; will provide the primary data for the Initial HITEC MMFX Product Evaluation.

Reinforced Concrete Structural Testing and Analysis

A series of structural properties testing programs for MMFX rebar have been completed at the University of North Florida, North Carolina State University, and University of West Virginia.  These structural test results support action on an ACI (American Concrete Institute) Guide for Design and Construction of Concrete Reinforced with High Strength Corrosion Resistant Steel (CRES) Rebar.  In addition, these tests form the basis for preparation of the structural analysis portions of MMFX’s Design and Construction Practices Manual.

(Contact MMFX Technologies for copies of the above referenced test data or documents.)

Provided by MMFX Technologies