Özet:

Nano-dimensional materials have very high chemical activity because they have very large specific surface areas. This high reactivity feature plays an important role in developing the different characteristics of cement-based materials. High micro-building intensity is also achieved thanks to the mechanisms of filling the pores with the influence of the elephants of these materials. Therefore, the replacement of nano particles with cement, even partially, improves their mechanical and durability characteristics. For this purpose, a combination of halloysite nano-kil, nano-SiO2 and nano-CaO, single and binary, in proportions of 1% and 5% of the total binding weight instead of cement, was produced. The water/connector ratio is selected as 0.38 in all the mixture. The samples of produced grapes have been identified with 7, 28 and 60 day pressure resistance, 28 and 60 day ultrasound transition speeds and hydration temperature values with the Langavant method. As a result, in the case of use of nano materials, the pressure resistance of all compounds has increased both in the early age and in the advanced age. The highest pressure resistance is obtained in mixtures containing 3% halloysite nano-kil and 5% nano-CaO. The double use of nanomaterials has not been found to be as effective as single use in pressure resistance. Ultrasound transition rates show results parallel with resistance results. In the case of use of nanomaterials, hydration temperatures have increased due to CaO activity in samples containing nano-CaO, but no significant change has been made in all the other mixture.

Anahtar Kelimeler:

Özet:

Since nano-sized materials have very large specific surface areas, their chemical activities are quite high. This high reactivity property plays a notable role in improving the different properties of cement-based materials. Besides, a high microstructure density is achieved thanks to the filler effect of these materials and the mechanism of filling the pores. Therefore, the replacement of nanoparticles with cement, even partially, improves its mechanical and durability properties. For this purpose, mortar mixtures were produced using 1%, 3% and 5% halloysite nano-clay, nano-SiO2 and nano-CaO, single and dual, instead of cement. The water/binder ratio was chosen as 0.38 in all mixtures. Compressive strengths of 7, 28 and 60 days, ultrasonic pulse velocity for 28 and 60 days and heat of hydration were determined by the Langavant method of the produced mortar samples. As a result, in the case of using nanomaterials, the compressive strengths of all mixtures both in early and old age have increased. The highest compressive strength was obtained in mixtures containing 3% halloysite nano-clay and 5% nano-CaO. It has been determined that dual use of nanomaterials is not as effective as singular use in compressive strength. Ultrasonic pulse velocity results are in line with strength results. According to the experimental results in the case of using nanomaterials, the hydration heat increased due to the activity of CaO in the samples containing nano-CaO. However, no significant change was obtained in all other mixtures.