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http://dx.doi.org/10.4334/JKCI.2017.29.4.379

Strength and CO2 Reduction of Fiber-Reinforced Cementitious Composites with Recycled Materials  

Lee, Jong-Won (Dept. of Convergence System Engineering, Chungnam National University)
Kim, Sun-Woo (Dept. of Construction Engineering Education, 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)
Publication Information
Journal of the Korea Concrete Institute / v.29, no.4, 2017 , pp. 379-387 More about this Journal
Abstract
The objective of this study is to develop sustainable PVA fiber-reinforced cementitious composites (FRCCs) that could exhibit comparable strength level to normal PVA FRCCs with no recycled materials. To evaluate mechanical properties of the FRCCs, compressive, flexural and direct tensile tests were conducted. In addition to the test, to calculate amount of carbon dioxide ($CO_2$) emission at the stage of manufacturing the FRCCs, life cycle inventory data base (LCI DB) were referenced from domestic and Japan. From the test results, the mechanical properties such as compressive, flexural and direct tensile strengths were decreased as the replacement ratio of recycled materials increased. And it was determined that the amount of $CO_2$ emission was reduced for the specimens with higher water-binder ratio (W/B) and replacement ratios. It was also found that binder intensity ($B_i$) value was higher as replacement ratio of fly ash (FA) increased. This result means that larger amount of FA is need to deliver one unit of a given performance indicator (1 MPa of strength) of FRCCs compared to that of ordinary portland cement (OPC). As a result, it could be concluded that FRCCs with W/B 45% replaced by FA 25% and recycled sand (RS) 25% is desirable for both target performance and $CO_2$ emission.
Keywords
PVA FRCCs; recycled materials; mechanical properties; $CO_2$ emission; binder intensity;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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