FAST-SETTING REPAIR MORTARS

FOR STRUCTURAL COMPONENTS


 

GENERAL

Fast-setting repair mortars used for concrete structural components shall meet the requirements of applicable Iowa Department of Transportation Specifications. These mortars shall be able to be used on horizontal, vertical and overhand locations. Acceptance of fast-setting repair mortars for use on Department of Transportation projects will be on the basis of manufacturer and brand name approval. Approved manufacturers and brands of fast-setting repair mortars for structural components are listed in the Materials Approved Products Listing Enterprise (MAPLE).

 

APPROVAL

To obtain approval for fast-setting repair mortars, the manufacturer shall submit the following items to the Office of Construction and Materials in Ames, Iowa:

 

1.   Product identification including brand name and product number

 

2.   Complete manufacturer recommendations for usage

 

3.     A current Material Safety Data Sheet (MSDS)

 

4.     An approved laboratory test report showing that the product meets the following criteria:

 

Compressive Strength (ASTM C109):

Minimum 3000 psi, 1 day

 

Minimum 5000 psi, 7 days

 

 

Bond, Slander Shear (ASTM C882):

Minimum 1000 psi, 1 day, lab-cure

 

 

Length Change: (ASTM C157 or

Allowable increase + 0.15%, 28 days in air

 

Other Appropriate Method):

Allowable decrease - 0.15%, 28 days in water

 

Approved manufacturers and brand names of fast-setting repair mortars for concrete will be listed in Appendix A.

 

CERTIFICATION

The manufacturer shall file a certification with the Office of Construction and Materials at the beginning of each calendar year stating that the material supplied during that year is identical with the formulation previously tested and approved.

 

MONITOR SAMPLING & TESTING

The Office of Construction and Materials may sample and test fast-setting repair mortars to verify their capability of meeting the approval requirements.