폐타이어 칩 및 에폭시를 활용한 탄성 복합체의 개발 - 강도와 내구성을 중심으로 -
Development of Elastic Composites Using Waste Tire Chip and Epoxy Resin - Focused on Strength and Durability -
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This study was performed to evaluate the strength and durability properties of modified epoxy composites with waste tire chip, recycled coarse aggregate,filler and modified epoxy to improve elongation and elasticity of epoxy. Additionally, for comparing to modified epoxy and unsaturated polyester resinas a binder, unsaturated polyester resin composites were developed in the same condition. The mix proportions were determined to satisfy therequirement for the workability and slump according to aggregate size and binder content. Tests for the compressive and flexural strength, freezing andthawing and durability for 20 % sulfuric solution were performed. The compressive and flexural strength of modified epoxy composites were in the rangeof 34.9~61.6 MPa and 10.2~18.3 MPa at the curing 7 days, respectively. Also, the compressive and flexural strength of unsaturated polyester resincomposites were in the range of 44.2∼77.8 MPa and 11.3~20.8 MPa at the curing 7 days, respectively. After 300 cycles of freezing and thawing, weightdecrease ratio and durability factor of modified epoxy composites were in the range of 0.8~1.9 % and 95~98, respectively. Accordingly, modified epoxycomposites will greatly improve the durability of concrete.
Abstract
This study was performed to evaluate the strength and durability properties of modified epoxy composites with waste tire chip, recycled coarse aggregate,filler and modified epoxy to improve elongation and elasticity of epoxy. Additionally, for comparing to modified epoxy and unsaturated polyester resinas a binder, unsaturated polyester resin composites were developed in the same condition. The mix proportions were determined to satisfy therequirement for the workability and slump according to aggregate size and binder content. Tests for the compressive and flexural strength, freezing andthawing and durability for 20 % sulfuric solution were performed. The compressive and flexural strength of modified epoxy composites were in the rangeof 34.9~61.6 MPa and 10.2~18.3 MPa at the curing 7 days, respectively. Also, the compressive and flexural strength of unsaturated polyester resincomposites were in the range of 44.2∼77.8 MPa and 11.3~20.8 MPa at the curing 7 days, respectively. After 300 cycles of freezing and thawing, weightdecrease ratio and durability factor of modified epoxy composites were in the range of 0.8~1.9 % and 95~98, respectively. Accordingly, modified epoxycomposites will greatly improve the durability of concrete.
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