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http://dx.doi.org/10.14190/JRCR.2016.4.3.307

Autogenous Shrinkage Mock-up Test of High Performance Concrete by Emulsified Refined Cooking Oil  

Jo, Man-Ki (Department of Architectural Engineering, Cheongju University)
Han, Cheon-Goo (Department of Architectural Engineering, Cheongju University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.4, no.3, 2016 , pp. 307-315 More about this Journal
Abstract
The aim of this research is analyzing the fundamental properties and autogenous shrinkage reducing performance of 70 and 100MPa grade high performance concrete including emusified refined cooking oil(ERCO) under the mock-up conditions. As a results of experiment, the mixture contained 0.5% of ERCO showed slightly decreased slump flow while the slump was increased and segregation resistance performance was improved as 2.5 of EIS. For air content, all mixtures satisfied target air content with increased unit weight and delayed setting time with ERCO addition. In the case of compressive strength, when ERCO was added 0.5%, the result of approximately 5 to 10% of increased compressive strength was observed. For the autogenous shrinkage, ERCO contributed on 20-30% of shrinkage reducing performance comparing to Plain mixture without ERCO. It is considered that capillary pore filling action of soap particles occurred by the reaction of ERCO in cement paste between fatty aicd and calcium hydroxide contributed the shrinkage reducing performance. Based on these mock-up test results, application of the high performance concrete mixture with ERCO on CFT actual structure was decided.
Keywords
High performance concrete; Emulsified refined cooking oil; Autogenous shrinkage; Mock-up test;
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