The objective of this paper is to provide the feasibility of premixed type ternary blended aggregates using raw fly ash(Ra), crushed sand(CS) and sea sand(SS) by studying fresh properties of the concrete. Ra is varied from 2.5% to 10% with interval of 2.5% by weight of mixed aggregates. Test results indicates that the replacement of Ra by mixed aggregates with low quality crushed sand and sea sand resulted in decrease of slump and air contents due to increased viscosity.

• 현승용(청주대학교 건축공학과, 석사과정) | Hyun, Seong Yong Corresponding author
• 박경택(청주대학교 건축공학과, 박사과정) | Park, Kyung Taek
• 박구병(한국시설안전공단 건설안전본부장, 공학박사) | Park, Goo Byeong
• 한민철(청주대학교 건축공학과, 부교수, 공학박사) | Han, Min Cheol
• 한천구(청주대학교 건축공학과, 교수, 공학박사) | Han, Cheon Goo