| Title |
Mechanical Properties of Lightweight Aggregate Concrete Using Expanded Bottom Ash and Dredged Soil Granules |
| Authors |
이경호(Lee, Kyung-Ho) ; 양근혁(Yang, Keun-Hyeok) |
| DOI |
https://doi.org/10.5659/JAIK.2021.37.2.189 |
| Keywords |
Lightweight aggregate concrete; Water-to-cement ratio; Mechanical properties; Bottom ash; Dredged soil |
| Abstract |
This study aims to examine the effect of water-to-cement ratios (W/C) on the mechanical properties of lightweight aggregate concrete
(LWAC) prepared using artificially expanded bottom ash and dredged soil granules. For the all-LWAC and sand-LWAC (with sand content of
50% for replacing lightweight fine aggregates) groups, W/C varied from 30% to 50% at an interval of 5%. From the comparison of the
normalized compressive strength development, a higher long-term strength ratios were observed in LWAC when compared with the common
values of the conventional normal-weight concrete. The compressive strength, tensile strength, modulus of elasticity and rupture, shear friction
strength, and bond strength with a reinforcing bar measured in sand-LWAC were higher by approximately 42%, 35%, 35%, 52%, 33%, and
3.5%, respectively, than those of the companion all-LWAC. The modulus of elasticity and rupture of LWAC could be estimated
conservatively using the design equations specified in KBC 2016. |