nvestigation of Resistance and durability parameters of non-armored concrete components made with Persian Gulf dredging sand

Document Type : Research Paper

Authors

1 Engineering, Hormozgan University

2 ترجمه Assistant Professor of Hormozgan University

3 Faculty member of Roads, Housing and Urban Development Research Center

4 Assistant Professor of Hormozgan University

Abstract

Preparation of aggregate, as an essential ingredient that forms three-fourth of the concrete volume is an issue for the environment and the sustainable development. One of the most appropriate solutions, especially in the coastal areas of seas and oceans is to use the marine aggregates particularly the dredged aggregates, dredging the sand from the sea (DMS) for producing concrete.In this research, with due attention to the fact that there is no proper sand for concrete in some coastal areas of Persian Gulf and the Gulf islands, an experimental study has been carried out in order to develop a method to produce non-reinforced concrete, focusing on the application of the DMS. This method would also economize the expenses. In addition, for cementitious materials' preferences and influences, three different types of cement, which are also known as the most appropriate ones for the applicable concrete in the mentioned areas, are studied; Portland Pozzolana cement, type II and type V. Conducted experiments on the concrete samples include uniaxial compressive strength tests, water absorption, determination of water penetration depth of cubic samples.Results show that from the mechanical and durability point of view, using the DMS as a substitution aggregate is best to be kept up to 25 percent of the total aggregate volume.

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