This paper investigates the effect of curing temperature on the hydration, microstructure, compressive strength, and transport of cement pastes modified with TiO₂ nanoparticles. These characteristics of cement pastes were studied using non-evaporable water content measurement, X-ray diffraction (XRD), compressive strength test, electrical resistivity and porosity measurements, and scanning elec...

In the recent years the installation of non-evaporable getter (NEG) coated dipole and quadrupole chambers at the GSI heavy ion synchrotron (SIS 18) have been carried out and ware completed in January 2010. The NEG coated chambers was part of different upgrade activities of the existing UHV system [1]. Those non-evaporable thin film getters, consisting of Ti–Zr–V, are deposited onto the vacuum c...

Structural materials are broadly used in applications such as nuclear vessels, high-temperature processes, and civil construction. Usually, during their placing lifespan, they may present free or chemically bonded liquid phases structure, demanding careful attention when exposed to high heating rates. Their behavior conditions is a challenging problem it comprises numerous highly nonlinear prop...

Non-evaporable thin film getters based on the elements of the 4 and 5 columns of the periodic table have been deposited by sputtering. Among the about 20 alloys studied to date, the lowest activation temperature (about 180 °C for a 24-hour heating) has been found for the Ti-Zr-V system in a well-defined composition range. The characterization of the activation behavior of such Ti-Zr-V films is ...

Synchrotron radiation induced photodesorption in particle accelerators may lead to pressure rise and to beam-gas scattering losses, finally affecting the beam lifetime [1]. We discuss the beam tube vacuum in the low field Stage 1 and Stage 2 Very Large Hadron Collider VLHC. Since VLHC Stage 1 has a room temperature beam tube, a non-evaporable getter (NEG St101 strip) pumping system located insi...

The Interaction Region Vacuum System in the PEPII B-Factory at SLAC must produce average pressures in the 10 Torr range. Low beamline pressures will minimize the background radiation encountered by the BaBar Detector. A combination of copper and stainless steel vacuum chambers with continuous antechambers are used to make up the beam tubes. Linear Non-Evaporable Getter (NEG) pumps are used to p...