Keywords

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Strain Hardening Cement Composites, SHCC hereafter, demonstrate excellent mechanical behavior showing tensile strain hardening and multiple fine cracks. This strain hardening behavior improves the durability of concrete structures employing SHCC and the multiple fine cracks enhance structural performance. Reliable tensile performance of SHCC enables us to design structures explicitly accounting for SHCC’s tensile properties. Reinforced SHCC elements (R/SHCC) indicate large energy absorbing performance under large seismic excitation.

Reinforced concrete structures are subjected to various types of loading, such as dead load, live load, and seismic load. Against those loads, R/SHCC elements can be designed by superimposing re-bar performance and SHCC’s tensile performance. The estimation of SHCC’s shear resistance contribution in design, which is deduced from SHCC’s tensile property, requires various investigations since the shear resistance mechanism is usually complicated.

This State-of-the-Art Report is written collectively by members of Sub-committee three of the RILEM TC 208-HFC. The report focuses on flexural design, shear design, FE modeling and anti-seismic design of R/SHCC elements as well as application examples. Establishing design methods for new materials usually leads to exploring application areas and this trend should be demonstrated by collecting actual application examples of SHCC in structures.

Exploring SHCC applications necessitates establishing structural design and construction practice manuals at a very early opportunity. Hence, the Japan Society of Civil Engineers published the “Recommendations for design and construction of high performance fiber reinforced cement composite with multiple cracks” in 2007, which contains technical knowledge accumulated in conjunction with the activity of RILEM TC 208-HFC. This recommendation can be freely obtained from the website of JSCE. The RILEM TC 208-HFC Subcommittee three activities described in this report are intended to develop more reliable and practical recommendations by reflecting the latest research results.

(K. Rokugo)