Abstract:

Nowadays mineral additives due to the advantages such as improving the physical and mechanical properties of cement or concrete a wide field of use are found. One of the waste materials is trass. In this study the effects of trass, to compressive strength, setting time water demand and volume expansion of the cement (OPC 42.5 R) were investigated. For this purpose, fly ash was added as a replacement for Portland cement in amounts of 0, 10, 15, 20, 25 and 30 weight %. As a result, setting time and water demand of the fly ash replaced cement pastes were determined a relatively increase according to Portland cement pastes. 2, 7 and 28 days compressive strengths has been decrease compared to the Portland cement. Despite this decrease, however, 10% and 15% of the trass replaced cement mortar compressive strength was determined to be between the standard values.

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