01372571

Component

The early age thermal development of concrete plays an important role in the durability of a structural concrete element. If the heat of hydration is not controlled the concrete element may become susceptible to thermal damage. The present study aims at developing recommendations for the construction of mass concrete. The research utilizes a computer program, ConcreteWorks, to analyze the thermal development of mass concrete elements. The computer program has been verified with data from the WB I-80 over the Missouri River Bridge. A sensitivity study has been conducted to determine the effect various construction, environmental, and mix proportion parameters have on the thermal development of mass concrete. Construction and environmental parameters that have been investigated include dimensional size, fresh placement temperature, curing method, forming method, form removal time, and placement date. Mix proportion parameters that have been investigated include cement content, substitution of class C fly ash, class F fly ash, and GGBFS. The results show that increasing the form removal time, reducing the dimensional size, reducing the fresh placement temperature, reducing the cement content, and the use of supplementary cementitious materials has the largest influence on the thermal development of the concrete.

01362476

12-2231

English

13p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Bridge foundations; Concrete construction; Environment; Mass concrete; Mix design; Sensitivity analysis; Temperature

Bridges and other structures; Construction; Highways; Materials; I32: Concrete; I53: Construction of Bridges and Retaining Walls

Transportation Research Board Annual Meeting 2012 Paper #12-2231

TRIS, TRB

Feb 8 2012 5:08PM