A Comparative Study on the Physical Properties of Artificial Aggregates Made from Acid Clay and Dredged Soil
Artificial aggregates (AAs) were manufactured from the acid clay (waste bentonite) and dredged soil produced at a thermal power plant by sintering at 600~1200°C for 10min. And those specimens were compared with respect to their bloating ability. The aggregates of acid clay had well-developed black core and uniform macro pores. The specific gravity of the AAs of acid clay increased with sintering temperature at 600~1000°C due to densification, but dramatically decreased at 1100°C, and at this temperature, the AAs showed bloating. The specific gravity and water absorption of the aggregates of dredged soil decreased with sintering temperature at 600~1000°C, indicating that the dredged soil has the ability to enlarge the sintering temperature range, favorable for the mass production process. The specific gravity of the AAs fabricated in this research ranged 0.8~2.0 and the water absorption ranged 4~26%, which was sufficient for various applications, such as functional membranes, light weight construction, smart soil, sound absorption and insulation fields etc..
Tien Long Banh, Hyung Sun Kim, Jian Feng Yang, Tohru Sekino and Soo Wohn Lee
S. G. Kang and Y. S. Kim, "A Comparative Study on the Physical Properties of Artificial Aggregates Made from Acid Clay and Dredged Soil", Materials Science Forum, Vol. 804, pp. 81-84, 2015