All over the world, shear strengthening of reinforced concrete elements using external fiber-reinforced polymer jackets could be used to improve building sustainability. However, reports issued by American Concrete Institute called for heavy scrutiny before actual field implementation. The very limited number proposed equations lacks reliability and accuracy. Thus, further investigation in this...

STATEMENT OF PROBLEM The conservation of sound tooth structure helps preserve tooth vitality and reduce postoperative sensitivity. Innovative preparation designs, like those for porcelain laminate veneers, are much less invasive than conventional complete-coverage crown preparations. However, no study has quantified the amount of tooth structure removed during these preparations. PURPOSE The ...

The need for repair and strengthening of deteriorated, damaged and substandard infrastructures has become an important challenge worldwide. The demand for increasingly heavier truck loads is forcing bridge owners to upgrade existing structures. In response to the growing need for concrete repair and rehabilitation, an experimental program was conducted to investigate the feasibility of using di...

External bonding of carbon fiber sheets has become a popular technique for strengthening concrete structures all over the world. Epoxy adhesive, which is used to bond the carbon fiber sheets and concrete, deteriorates rapidly when being exposed to high temperatures. This paper presents a high-temperature-resistant modified magnesia-phosphate cement (MPC) with the compressive strength that does ...

A multilevel microcontact printing (μCP) system that avoids the use of optical alignment and precision manipulation equipment is demonstrated. Most of the complexity is transferred to the poly(dimethylsiloxane) (PDMS) stamp itself by forming the features, a mechanical self-alignment mechanism, and an elastic membrane by wafer scale replica molding on a Si master. Flexible 50-μm-thick photoetche...

Schuelkelia unicornis gen. & sp. n. is described from Yunnan, China. The new taxon belongs to a group of genera characterized by the submentum lacking lateral sutures, and is most similar to Euconnus. Among the Eurasian genera Schuelkelia can be easily identified on the basis of the broad occipital constriction, pronotum lacking antebasal pits or grooves, elytra lacking externally visible basal...

This study investigated the use of waste chicken feather (barbs and rachis) as reinforcement in cement-bonded composites. A series of composite boards consisting of various proportions of waste feather, cement, sand, and chemical admixtures were prepared. Mix workability decreased significantly as the proportion by weight of feathers or ground feathers increased from 5% to 20%. Boards containin...

• Nine LC-TRM solutions on rammed-earth substrates were tested. Digital image correlation was found suitable for monitoring shrinkage of systems. Pull-off tests performed measuring the bonding behaviour The strengthening mesh is a key element controlling development. Several challenges and attended during experimental campaigns. wide dissemination earth-based structures as contemporary, vernacu...