왕겨재를 混入한 콘크리트의 工學的 特性에 關한 實驗的 硏究 = An Experimental study on the Engineering Properties of Concrete with Rice-Husk Ash

다국어 초록 (Multilingual Abstract)

This study was performed to evaluate the engineering properties of rice-husk ash concrete using normal portland cement, natural aggregates and rice-husk ash.
The following conclusions were drawn;
1. The unit weight was in the range of 2,216~2,325 kgf/㎥, the weights of those concrete were decreased 1~6% than that of the normal cement concrete, respectively.
2. The highest strength was achieved by 10% rice-husk ash filled rice-husk ash concrete, it was increased 8% by compressive strength, 17% by tensile strength and 18% by bending strength than that of the normal cement concrete, respectively.
3. The ultrasonic pulse velocity was in the range of 3,252~4,016 m/s, which was showed about the same compared to that of the normal cement concrete. The highest ultrasonic pulse velocity was showed by 10% rice-husk ash filled rice-husk ash concrete.
4. The dynamic modulus of elasticity was in the range of 242×10^3~306×10^3 kgf/㎠, which was showed about the same compared to that of the normal cement concrete. The highest dynamic modulus was showed by 10% rice-husk ash filled rice-husk ash concrete.
5. The static modulus of elasticity was in the range of 185×10^3~275×10^3kgf/㎠, which was showed about the same compared to that of the normal cement concrete. The poisson's number of rice-husk ash concrete was less than that of the normal cement concrete. The dynamic modulus was increased approximately 11~30% than that of the static modulus.
6. The durability was increased with increase of the content of rice-husk ash. The durability was increased 1.3 times by 10% rice-husk ash, 1.6times by 20% rice-husk ash filled concrete than that of the normal cement concrete, respectively.