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http://dx.doi.org/10.4334/JKCI.2017.29.2.149

Effect of Recycled Fine Aggregates and Fly Ash on the Mechanical Properties of PVA Fiber-Reinforced Cement Composites  

Nam, Yi-Hyun (Dept. of Convergence System Engineering, Chungnam National University)
Park, Wan-Shin (Dept. of Construction Engineering Education, Chungnam National University)
Jang, Young-Il (Dept. of Construction Engineering Education, Chungnam National University)
Yun, Hyun-Do (Dept. of Architectural Engineering, Chungnam National University)
Kim, Sun-Woo (Dept. of Construction Engineering Education, Chungnam National University)
Publication Information
Journal of the Korea Concrete Institute / v.29, no.2, 2017 , pp. 149-157 More about this Journal
Abstract
As the amount of construction wastes increase, reuse of recycled materials is being considered in research areas. While there are many experimental investigations focusing on development of mortar and concrete using the recycled materials, the studies regarding the fiber-reinforced cement composites (FRCCs) using recycled materials are still limited. In this paper, an experimental attempt has been made to investigate the effect of recycled fine aggregates and fly ash on the mechanical properties of PVA FRCCs. The cement and natural sand were respectively replaced by fly ash and recycled fine aggregates at two content levels, 25% and 50%. Ten types of PVA FRCCs mixes were fabricated and tested to investigate the flexural, compressive and direct tensile behaviors. The test results show that flexural, compressive and direct tensile strength were decreased with increase in fly ash content at all ages. In particular, flexural, compressive and direct tensile strengths of specimens, containing 50% recycled fine aggregates and 50% fly ash, showed the lowest values. The modulus of elasticity of specimens showed similar trend to the 28-day compressive strength. Poisson's ratio was increased with increase in fly ash and recycled fine aggregates content.
Keywords
PVA FRCC; mechanical properties; recycled fine aggregate; fly ash;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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