| Title |
An Experimental Study on Fundamental Properties And Durability of Concrete Using Glycol Ether Chemical Admixture |
| Authors |
Lim Sang-Jun ; Kim Kwang-Ki ; Paik Min-Su ; Song In-Myung ; Jaung Jae-Dong ; Jung Sang-Jin |
| Keywords |
Glycol Ether ; Durability ; Drying Shrinkage ; Carbonation |
| Abstract |
Focused on the material?related aspect for enhancing the durability of concrete, the present study analyzed the effect of glycol ether admixture, which is a chemical admixture that can compact the structure of concrete by entraining air inside the concrete, on the basic physical properties and durability characteristic of the concrete.In analyzing the results of experiment, we examined the basic physical properties and durability characteristic of concrete according to addition rate based on OPC and selected the optimal addition rate. In addition, with the optimal addition rate, we added glycol ether admixture to concrete, which contained fly ash and fine blast furnace slag power used as binder and high?performance water reducing agent for reducing the unit quantity, and examined changes in the characteristics of the concrete. According to the result, the optimal addition rate of glycol ether admixture was3% of the unit quantity of cement, and the addition of binder and chemical admixture did not have a significant effect on unhardened concrete but reduced the air content. In addition, we found that the addition was effective for strength and resistance to carbonation and the change of length in hardened concrete, but improvement in resistance to freezing and thawing was relatively low because of the decrease of the air content. |