Strength Properties of Hardened Concrete Produced with Natural Aggregates for Different Water/Cement Ratios

Abstract

Due to the competition in the concrete sector, there is a need for better quality and low-cost concrete production in recent years. One of the changes that can be made in this direction is the use of natural aggregates, which are expected to be particularly strong and obtained from river beds, in the production of concrete. It is intended to provide economic gain in Turkey, a country which is rich in terms of riverbeds, by evaluating these natural aggregates in the concrete production. It is common to use crushed stones as aggregates in concrete. However, such aggregates are difficult and costly to manufacture. Therefore, it is necessary to evaluate the existing natural resources efficiently. This study aims to investigate the effects of natural aggregates on hardened concrete properties. In the present study, quartzitic natural aggregates from the river beds in the Mediterranean region were used as aggregate. The experiments were carried out for different water/cement ratios by keeping the aggregate granulometry and cement dosage constant. A number of concrete samples produced within the scope of this study were subjected to hardened concrete tests such as compressive strength and splitting tensile strength. The results obtained are in accordance with the relevant TS standards. Thus, it was determined that these aggregates could be used in concrete for concrete strength. The strength of concrete samples and water/cement ratio were determined to be inversely proportional. In addition, a good fit was achieved between the results obtained from the compressive strength and splitting tensile strength tests.

Keywords

• Natural aggregate,hardened concrete properties,water/cement ratio,compressive strength,splitting tensile strength

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