| Title |
The Behavior of Shrinkage Strain and Compressive Strength of the Cementless Mortar using Hwangto Binder according to Mixing Conditions |
| Authors |
Yang Keun-Hyeok ; Hwang Hey-Joo ; Kim Sun-Young ; Song Jin-Gyu |
| Keywords |
Eco-friendly Concrete ; Cementless Mortar ; Hwangto Binder ; Mixing Design ; Compressive Strength ; Shrinkage |
| Abstract |
The objective of this study which is a part of fundamental investigations for positive application of eco-friendly concrete to healthy housing is to develop the mixing design of cementless mortar with hwangto binder (HB). Elements influencing on the compressive strength and the shrinkage of mortar, such as water-HB ratio, fine aggregate-HB ratio, and the maximum size and particle distribution of the fine aggregate, were selected as main variables. Also, the models to predict the initial flow and the compressive strength at age 28 days of cementless mortar with hwangto binder were proposed by non-linear multiple regressive analysis based on test results. Test results showed that the compressive strength of cementless mortar with hwangto binder relative to that of the corresponding cement mortar had 86～115%. The shrinkage strain of cementless mortar with hwangto binder was higher than that of the corresponding cement mortar by average of 20%. High possibility on the application of cementless mortar using hwangto binder as building material was ensured from this study. |