Report A : self-consolidating concrete (SCC) for infrastructure elements - shear characteristics.

Details

• Corporate Creators:
  Missouri University of Science and Technology
• Subject/TRT Terms:
  • Self compacting concrete
  • Compressive strength
  • Shear strength
  • Coarse aggregates
  • Interlocking aggregates
  • Shear tests
  • Mix design
  • Precast concrete
  • Self-consolidating concrete--Compression testing
  • Shear (Mechanics)
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• Publication/ Report Number:
  Project TRyy1103 ; cmr 13-003
• Resource Type:
  Tech Report
• Geographical Coverage:
  Missouri
• Edition:
  Final report.
• Corporate Publisher:
  Missouri. Department of Transportation
• Abstract:
  Because of its unique ability to maintain high flow-ability and remain homogeneous, ; self-consolidating concrete (SCC) has the potential to significantly reduce the costs ; associated with civil infrastructure; however, the use of higher paste and lower coarse ; aggregate volumes than non-SCC concretes raises concerns about the structural implications ; of using SCC. Of particular concern is the effect of concrete compressive strength, and ; aggregate type, shape, and content level on shear strength of SCC mixes. This research ; focused on the components that contribute to the concrete’s ability to provide shear ; resistance, in particular, shear provided by aggregate interlock. Variables investigated by ; push-off tests to determine the shear contribution from aggregate interlock included concrete ; compressive strength (6 and 10 ksi 41.3 and 68.9 MPa target), coarse aggregate type ; (limestone and river gravel), and volumetric content level of the coarse aggregate portion ; (36%, 48%, 58%, and 60%). Post-failure digital imaging software was used to confirm fresh ; concrete parameters in the hardened state as well as check for variability and the impact on ; shear. Additional attention was given to the global contributions of shear by the concrete in ; larger scaled tests of pre-stressed beam members. The results were used to assess the ; appropriateness of designing Missouri Infrastructure elements using the current AASHTO ; LRFD Bridge Design Specification for shear and while using typical Missouri SCC batch ; proportions and materials.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25607/dot_25607_DS1.pdf
• File Type:
  [PDF - 3.99 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:79c368ab6230df130974025c0917a28d5bdf35c6e41691c67868a841cdcc47f5f741ffb4bf2fe085a1ae482f5a05d3556c360e2ddcf24aaf8ec2651a7260f914