Crack Control for Spillway Chute at Ririe Dam


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Title: Crack Control for Spillway Chute at Ririe Dam

Author(s): Richard A. Kaden and E. K. Schrader

Publication: Special Publication

Volume: 64


Appears on pages(s): 259-292

Keywords: compressive strength; concrete construction; concrete panels; concrete slabs; cracking (fracturing); dams; expansion; expansive cement, type K; field tests; mix proportioning; shrinkage-compensating concretes; spillways.

Date: 7/1/1980

This report describes the use of shrinkage-compensating concrete for a spillway chute invert. The contractor elected to use the Type K expansive cement alternate in lieu of the conventional Type II portland cement. A study was made to evaluate compressive strengths for various water-cement ratios, slump loss, restrained expansion, modulus of elasticity, and freeze-thaw durability. Quality assurance testing at the project consisted of casting standard compressive strength specimens and restrained expansion prisms for each of the 18 panels. This use of shrinkage-compensating concrete provided an effective means of crack control for a spillway chute invert slab.