Nanotechnologies in Construction: A Scientific Internet-Journal

42-67

Authors: Helal E., Sherif El-Badawy, Alaa G., Zaki S.I.

This research work focused on the investigation of the properties of asphalt binder modified with different percentages of nanoclay (NC) and nanosilica. The nanosilica was manufactured from two different sources: silica fume (NSF) and rice husk (NSH). Results showed that NSF tends to decrease the penetration and increase the softening point temperature (SFT) and rotational viscosity (RV). However, NC content more than 3% was found to increase the penetration and decrease both RV and SFT. Using smaller percentages of NC increased both SFT and RV and decreased the penetration. Up to 3% of NSH exhibited improvement in penetration, SFT, and RV, however slight or no improvement was observed at higher contents. The Dynamic Shear Rheometer (DSR) results showed obvious improvement in the Superpave performance grade. Both NSF and NC were found to improve Marshall stability of the asphalt mixtures.

93-110

Authors: Ivanov L.A., Muminova S.R.

The new technical solutions including inventions in the area of nanotechnology and nanomaterials are efficiently applied in communal and housing services as well as in construction and other joint fields. The invention «Nanomodified epoxy binder for composite materials (RU 2584013)» refers to the production of composite materials based on fiber fillers and nanomodified epoxy binder and can be used for manufacture of glass-fiber tubes and other articles for which winding method is used and which are employed in heat networks, hot water supply with delivery method, water supply systems where the temperature can achieve 150°С. Nanomodified epoxy binder for composite materials includes epoxy diane resin and amine hardening agent. The technical result is shorter period of binder hardening, increased heat-resistance and strength characteristics of cured compositions, extended assortment of epoxy compositions with improved technological and performance properties.