Investigating the Effect of Two-Component Cement on the Physical Characteristics of Self-Compacting Concrete and Its Carbonation Rate

Document Type : Research Paper

Authors

1 Assistant Professor, Department of Civil Engineering, Shams Gonbad Higher Education Institute, Gonbadkavos, Iran

2 Ms.c. of Architecture, Lecturer at Al-Zahra Technical and Vocational School, Tabriz, Iran

Abstract

In this research, there are 19 different mixtures, each of them consists of a combination of gray and 325-1, 425-1, and 525-1 cement. The samples are made by replacing 10, 20, 30, 40, and 50 percent of white cement instead of gray cement. They have been prepared in the relevant molds as described below and subjected to compressive and tensile tests, water absorption and finally carbonation, the results of which are given in the relevant tables in the fourth chapter. In general, 228 concrete samples were concreted in 7 combinations in 4 different molds, and the samples were measured after 28 days under the mentioned tests. The general results show the high compressive strength of the samples containing a high percentage of white cement, which showed completely opposite results in carbonation, but the water absorption was also lower in concrete containing white cement than gray cement.

Keywords


1- Akinkurolere, O., Jiang, C. O., and Shobola, M., 2007, The Influence of Salt Water on Compressive Strength of Concrete, Journal of Engineering and Applied Sciences, 2, 412-415.
2- Eiamekamornkul, S., and Saksurpharp, S., 1998, Effect of Sea Water on Compressive Strength of Fly Ash Concrete.
3- Griffin., D.  F., and Henry, .R. L., 2004, The Effect of Salt in Concrete on Compressive Strength, Water Vapor Transmission, and Corrosion of Reinforcing Steel, Technical Report, U.S. Naval Civil Engineering Laboratory, 22 Jully.
4-Baradan, B., and Yazıcı,. H., 2003, Durability in Reinforced Concrete Structures and Innovations Brought by the TS EN 206-1 Standard”, Turkey Engineering News, Issue 426-2003/4, 62-69.
5-Uyan, M., and Akkaya, Y., 1995, The Effect of Sea Water as Mixed Water on Concrete Properties, Ready Mixed Concrete Magazine, Turkish Ready Mixed Concrete Association Publication, 80-84, Istanbul., July-August 1995.
6-Iranian National Standardization Organization (INSO) No.2592 Valiasr Ave., South western corner of Vanak Sq., Tehran, Iran
7- ASTM C39, 2016, Standard test method for compressive strength of cylindrical concrete specimens.
8-Testing for Bending Strength ASTM C109 (Cubes) & ASTM C39 (Cylinders)
9- ASTM C 20-00, 2005, Standard Test Methods for Apparent Porosity, Water Absorption, Apparent Speci,. (Reapproved 2005).
10-BS EN 13295, 2004, Products and systems for the protection and repair of concrete structures,Test methods, Determination of resistance to carbonation.