STUDY ON 1DAY PAVE MIXING HIGH STRENGTH PORTLAND CEMENT AND BLAST FURNACE SLAG CEMENT TYPE B

Abstract

Recently, global warming is a serious problem. In Japan, therefore, reduction of CO₂ emission is an important problem in any industry. Especially, in construction works of which the scale is very large, an action for CO₂ emission reduction is demanded, and it is necessary to deal with reduction of CO₂ emission. This paper describes the evaluation of concrete property and test-construction of 1DAY PAVE reduced CO₂ emission and calculated CO₂ emission and compare with 1DAY PAVE reduced CO₂ emission with 1DAY PAVE using HC alone. Due to obtain bending strength 3.50N/mm² which is able to traffic 1day later of construction, 1DAY PAVE was used high strength portland cement and has a lot of unit content of cement than general pavement concrete So, we mixed blast furnace slag cement type B（BB）in 1DAY PAVE, and evaluated concrete property and test-construction was performed. As a result, the bending strength of 1DAY PAVE mixed BB was more than 3.50N/mm². And 1DAY PAVE mixed BB could be constructed like 1DAY PAVE using HC alone. As for CO₂ emission, the emission for 1DAY PAVE reduced CO₂ was less than 1DAY PAVE using HC alone, in the case of 50％ replacing a part of BB with HC the emission was less 20％ than 1DAY PAVE using HC alone.