| Title |
Developing the Spherical Shell Lightweight Aggregate Available for Concrete Structure |
| Keywords |
Spherical Shell Lightweight Aggregate ; Density ; Water Absorption ; Mold ; Strength |
| Abstract |
In this study, the spherical shell lightweight aggregate is developed as a structural aggregate, which is made by using half spherical mold and ball shaped press. The shell structure is very beneficial in case of construction for huge space. The purpose of this study is to suggest the way how to make the spherical shell lightweight aggregate and evaluate its feasibility as a structural aggregate. The mass production of the spherical shell lightweight aggregate seems possible because the method to make it is relatively simple and its material is general clay. The quality control of the spherical shell lightweight aggregate is also easy due to using mold and ball shaped press. It is possible to make the spherical shell lightweight aggregate with various diameter and surface thickness by changing the diameters of half spherical mold and ball shaped press. This study is about only one type of spherical shell lightweight aggregate. Conclusion obtained are summarized as follows :1) The density of lightweight aggregate is 1.40 g/㎤.2) The water absorption of lightweight aggregate is 2.23%3) The compressive strength of lightweight concrete is ranged from 27.4 MPa to 30.2 MPa. 4) The unit weight of lightweight concrete is ranged from 1.87 t/㎥ to 1.96 t/㎥. |