One solution to the high cost and scarcity of building materials is use alternative sustainable materials. The study presented herein developed an eco-friendly masonry grout using volumes palm oil clinker powder replace cement coarse aggregate. Several batches grouts with different amounts these were made determine technical viability grout. Scanning Electronic Microscope (SEM), X-Rays Diffract...

A set of laboratory experiments has been carried out to determine if micro-needles (MNs) can enhance penetration depths of high-speed micro-particles delivered by a type of gene gun. The micro-particles were fired into a model target material, agarose gel, which was prepared to mimic the viscoelastic properties of porcine skin. The agarose gel was chosen as a model target as it can be prepared ...

Abstract The development and construction of offshore wind farms requires the correct estimation friction that can be mobilised at rock/grout interface. In conventional studies, shear behaviour a joint is usually investigated with laboratory tests under constant normal load/stress (CNL), however, in engineering practice, direct testing stiffness (CNS) has been proved to more realistic assessmen...

BACKGROUND The efficacy of endodontic irrigation procedures can be compromised by the complexity of the root canal system. Delivering irrigants to the apical third of curved canals presents a particular challenge to endodontists. This study compared the effects of two ultrasonic irrigation techniques on the penetration of sodium hypochlorite into the main canal and simulated lateral canals of c...

OBJECTIVES The purpose of this study was to evaluate the in vitro sealing ability of three repair materials. Mineral trioxide aggregate (MTA; Group A), calcium phosphate cement (CPC; Group B), and light cured glass ionomer cement (GIC; Group C) when used to repair the perforation created in the pulpal floor of fifty extracted human permanent molars. MATERIALS AND METHODS Preparation of access...

S. I. Khan, P. Adhikari, Y. Hong, H. Vergara, T. Grout, R. F. Adler, F. Policelli, D. Irwin, T. Korme, and L. Okello School of Civil Engineering and Environmental Sciences, University of Oklahoma, Norman, OK, USA NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, USA NASA Marshall Space Flight Cente...

A cable-stayed bridge recently constructed by the Ohio Department of Transportation incorporates measures put forth by a Federal Highway Administration study to mitigate stay motion. In following recent trends, the stays at this bridge are built without the use of grout for the purposes of inspection and, if necessary, replacement. Several experiments were performed to determine the viability o...

The capability of the generalized interpolation material point (GIMP) method in simulation of penetration events is investigated. A series of experiments was performed wherein a shaped charge jet penetrates into a stack of aluminum plates. Electronic switches were used to measure the penetration time history. Flash x-ray techniques were used to measure the density, length, radius and velocity o...

The capability of the generalized interpolation material point (GIMP) method in simulation of penetration events is investigated. A series of experiments was performed wherein a shaped charge jet penetrates into a stack of aluminum plates. Electronic switches were used to measure the penetration time history. Flash x-ray techniques were used to measure the density, length, radius and velocity o...