بررسی تنش جاری شدن و ویسکوزیته پلاستیک مخلوط های بتن خود تراکم حاوی پودر سنگ با استفاده از دستگاه رئومتر بتن ساخته شده برای اولین بار در ایران

Self-consolidating concrete(SCC) application is using in the construction projects more and more because of its advantages include high quality and flow under its own weight without any vibration. The rheological properties of SCC are very important that it has a significant effect on mechanical properties and durability. In this study, using a special concrete rheometer that has made for the first time in Iran, rheological parameters of SCC are determined. For performance evaluation and calibration of device, standard oil with determined viscosity by factory is used. Plastic viscosity value obtained by rheometer was equal 2.208 Pa.S and the oil viscosity provided by the factory was 2.219. Therefore results show that Rheometer performance is according with design plan and rheological parameters can be determined well by this device. Also some experimental SCC mixture contains two kinds of powder as filler is made. The calculated values of plastic viscosity and yield stress of these mixtures show that SCC containing limestone powder to 200 kg/m3 indicating the best performance and with increasing the amount of filler to 300 kg/m3 cause to increase yield stress. Self-consolidating concrete(SCC) application is using in the construction projects more and more because of its advantages include high quality and flow under its own weight without any vibration. The rheological properties of SCC are very important that it has a significant effect on mechanical properties and durability. In this study, using a special concrete rheometer that has made for the first time in Iran, rheological parameters of SCC are determined. For performance evaluation and calibration of device, standard oil with determined viscosity by factory is used. Plastic viscosity value obtained by rheometer was equal 2.208 Pa.S and the oil viscosity provided by the factory was 2.219. Therefore results show that Rheometer performance is according with design plan and rheological parameters can be determined well by this device. Also some experimental SCC mixture contains two kinds of powder as filler is made. The calculated values of plastic viscosity and yield stress of these mixtures show that SCC containing limestone powder to 200 kg/m3 indicating the best performance and with increasing the amount of filler to 300 kg/m3 cause to increase yield stress. Self-consolidating concrete(SCC) application is using in the construction projects more and more because of its advantages include high quality and flow under its own weight without any vibration. The rheological properties of SCC are very important that it has a significant effect on mechanical properties and durability. In this study, using a special concrete rheometer that has made for the first time in Iran, rheological parameters of SCC are determined. For performance evaluation and calibration of device, standard oil with determined viscosity by factory is used. Plastic viscosity value obtained by rheometer was equal 2.208 Pa.S and the oil viscosity provided by the factory was 2.219