This code presents principles for a initial overview that determines the "design foundation code" that's, if the development might be repaired in line with the ACI 318 model utilized in the unique layout, or if the fix must conform to the present ACI 318. The code offers principles for picking out power of in-situ fabric, acting structural research, designing upkeep for energy and sturdiness, necessities for balance and shoring of development, and inspection and trying out of upkeep. statement offers program counsel in addition to references for additional info.
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Extra resources for ACI 562M-13: Code Requirements for Evaluation, Repair, and Rehabilitation of Concrete Buildings and Commentary (Metric)
2R reports that the physical and mechanical properties of the resin components of FRP systems are influenced by temperature and can degrade at temperatures close to and above their glass-transition temperature Tg. 2R as Tg – 15°F. This value accounts for typical variation in test data for dry environment exposures. Adhesive-bonded FRP reinforcement should not be used if the maximum service temperature is greater than Tg – 15°F. A service temperature exceeding this limit is considered an elevated temperature and should be addressed using adhesive system with a higher Tg value or using alternate repair systems.
For statically indeterminate structures, restraint to post-tensioning deformations can 40 CODE REQUIREMENTS FOR EVALUATION, REPAIR, AND REHABILITATION OF CONCRETE BUILDINGS (ACI 562M-13) CODE COMMENTARY result in significant internal forces. 1 for selecting strengthening systems for concrete structures. 1 Stresses due to supplemental post-tensioning shall be combined with existing stresses and the total shall not exceed the limits in the design basis code. 1C Adding supplemental post-tensioning to a prestressed member may cause excessive compressive and tensile stress and may alter secondary forces and moments.
1 The corrosion and deterioration of reinforcement and embedded components shall be considered in the durability design. Repair materials shall not contain intentionally added constituents that are corrosive to reinforcement within the repair area. Aggregates shall conform to the requirements of ACI 318M-11.