All airfield concrete spalls are the result of Resisted Relative Movement. This is why virtually all spalls occur along joints, corners, and larger cracks.
All Polymer Concrete Inc's Resurf® products, procedures, techniques, and recommended tools/equipment effectively address these issues. Repairs must not make a very bad situation much, much worse.
See Resurf® JF & SS for more information about Resurf® Joint Forming and Sealing Systems. Training videos are available, and PowerPoints available upon request.
Spalled longitudinal runway crack repaired 4 years before invention of Resurf® Joint Forming and Sealing System*-Type 4. Complete Separation (down to the first course of reinforcement) of the "two slabs" must be achieved using Type 4 and black silicone caulk. Meandering cracks and all joints must be converted into effective expansion/contraction joints.
* Patent No.10,577,760 B2
POLYMER CONCRETE INC and TOMBSTONE RESTORATION
PO Box 610 Camden, AL 36726 USA
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