To evaluate the elasticity modulus of HVFA(High Volume Fly Ash) concrete, experiments were
performed according to the ratio of fly ash usage and concrete compressive strength. Test results were shown that elasticity modulus of HVFAC was influenced by compressive strength, unit weight and fly ash usage ratio. And the existing codes of elasticity modulus had a large difference. So, new equation of elasticity modulus for HVFAC was proposed, and the proposed results had a good correlation with test results.

• 유성원(우석대학교 토목환경공학과 교수, 공박) | Yoo, Sung Won
• 임연재(우석대학교 토목환경공학과 석사과정) | Lim, Yeon Jae Corresponding Author