Title: High Strength Lightweight Aggregate Concrete for Arctic Applications--Part 3: Structural Parameters

Author(s): George C. Hoff

Publication: Symposium Paper

Volume: 136

Issue:

Appears on pages(s): 175-246

Keywords: arctic concrete; beams (supports); bearing capacity; shear strength; cold weather construction; compressive strength; harbor structures; high-strength concretes; lightweight aggregates; marine atmospheres; multiaxial stress behavior; offshore structures;

DOI: 10.14359/4021

Date: 1/1/1993

Abstract:
Final part of a three-part paper presents the results of a joint industry project to develop high-strength lightweight aggregate concretes for use in the Arctic and describes the determination of selected structural parameters for those concretes. Both crushed and pelletized lightweight aggregates were used with supplementary cementing materials and high-range water reducers to produce concretes with compressive strengths from 8000 to 11,000 psi (55 to 76 Mpa). Structural parameters evaluated were the stress-versus-strain behavior of concrete, multiaxial stress behavior, beam shear strength, shear friction capacity, bearing strength for post-tensioning operations, and reinforcing bar development length. Where possible, the test results were compared to ACI 318 provisions. In almost all instances, the ACI code requirements were satisfactory for use with these types of concrete.