Enhancement of Crack Distribution of UHP-SHCC under Axial Tension Using Steel Reinforcement
Source abstract
Abstract
Ultra High Performance-Strain Hardening Cementitious Composites (UHP-SHCC) are a composite material comprising a cement-based matrix and short fibers with outstanding mechanical and protective performance. Surface protection repair using a thin layer of UHP-SHCC to extend the service life of concrete structures has been proposed, and surface protec-tion performance associated with both a durable matrix and multiple fine cracks is required. This paper presents an ex-ample of decreased cracking ability and decreased strain capacity in UHP-SHCC specimens of a practical size. Note that, the small size dumbbell-shaped UHP-SHCC specimen can exhibit a large number of cracks and higher strain capacity. Also, this paper assesses the usage of a small amount of steel reinforcement in order to enhance the crack distribution and strain capacity of practical size UHP-SHCC specimens in tension. Practical-size specimen dimensions (cross sectional size: 200 x 50mm), which are similar to the typical size used for surface protection repair applications (depth of 30 to 70 mm), were selected in this study. Different reinforcement ratios ranging from 0.3% to 1.2% were used to evaluate the effect of the reinforcement ratio on the specimens' strain capacity and crack distribution.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Innovative concrete reinforcement materials · Structural Behavior of Reinforced Concrete · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering, Nagoya University, Japan.
Department of Structural Engineering, Tanta University, Egypt.
References (20)
Show source-provided references
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