WSEAS Transactions on Heat and Mass Transfer
Print ISSN: 1790-5044, E-ISSN: 2224-3461
Volume 10, 2015
Performance of Stage and Direct Method of Mass Concrete Construction in Controlling Temperature Gradient
Authors: , , , ,
Abstract: Mass concrete construction always deals with the temperature control issue since the process including the heat transfer following the oxidation process and may generate thermal crack for high temperature gradient between layers as low thermal diffusivity of concrete may generate internal restraint and resulting tensile stress at some parts of the concrete, which does not perform well in resisting tension force. Quality control and assurance of mass concrete construction among projects are unique and it is significantly recommended to arrange appropriate procedure.This paper evaluates temperature development and its gradient between layers of mass concrete construction with stage and direct method. Curing method was performed by assuring that the temperature from the concrete surface to the lower level remained similar, or may vary with no more than 20oC. This curing technique performed excellent in office (stage method) and hotel (direct method) raft foundation. The trendline of those two foundations were typically similar, not to mention the time difference. Therefore, it may be expected that thermal cracking did not occur in the concrete during construction and curing phase. Moreover, should cubic polynomial interpolation is used, the behavior of temperature development shows precise result for second degree polynomials.
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Pages: 62-68
WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 10, 2015, Art. #7