Due to the pozzolanic reactivity, rice husk ash (RHA) is used as supplementary cementing material in mortar and concrete and has demonstrated significant influence in improving the mechanical and durability properties of mortar and concrete. It has economical and technical advantages to use in concrete. In this paper, a critical review on the influences of RHA on the strength of mortar and conc...

Customers often evaluate products at brick-and-mortar stores to identify their “best fit” product, but end up buying this product not at the store but at a competing online retailer to take advantage of lower prices. This free-riding behavior by customers is referred to as “showrooming.” We analyze three strategies to counter the effect of showrooming that may improve profits for the brick-and-...

Mortar elements form a family of special non-overlapping domain decomposition methods which allows the coupling of different triangulations across subdomain boundaries. We discuss and analyze a multilevel preconditioner for mortar finite elements on nonmatching triangulations. The analysis is carried out within the abstract framework of additive Schwarz methods. Numerical results show a perform...

One of the main problems with hydraulic structures is that floating silt, gravel, ice sand, boulders, and other materials circulating over a concrete surface have an abrasive effect causes to abrade. Abrasion degrade, which could eventually expose reinforcing corrosion. In addition section loss, reinforced structures’ endurance may also be problem. Repair mortars are used restore surfaces been ...

In the field of industrial control, there has been a significant increase in the use of AI based techniques. For various control problems there has been successful implementation of different Intelligent techniques like Fuzzy Logic, Artificial Neural Network and other Hybrids. One of the major byproducts recovered from crude oil is sulfur. Sulfur is recovered from crude oil using the Modified C...

A semi-synthetic thiamine-free diet was used on weaned lambs to test the effect of a high sulfur level on the rumen, microbial activity and on the microbial production of thiamine. In vivo and in vitro kinetic studies, as well as the determination of the thiamine concentrations and thiaminase activity in the rumen, were performed during the 16 week experiment. A high sulfur level (0.6%) in the ...

The use of secondary mining resources to replace conventional constituents in mortars production has proved the effectiveness preserve quality mechanical, physical, and chemical properties. However, minimal research been performed quantify environmental impacts with residues. In present work, a life cycle assessment 10 was carried out. A reference mortar (100% cement binder) substitutions 10%, ...

0.1016/j.nanoen.2 lsevier Ltd. All rig thor at: Departm d University, Stan [email protected] ntributed equally Abstract Understanding the behavior of soluble intermediate lithium polysulfide species is vitally important for improving the electrochemical performances of lithium-sulfur batteries. Herein we explore a simple in-operando lithium-sulfur cell design to enable direct visualization of t...

The performance of MSU-S and its forms modified with phosphotungstic acid (HPW) and nickel (Ni) for the desulfurization and denitrogenation of model diesel fuel were studied. According to the results of the characteristic tests (N2 adsorption-desorption, XRD, SEM, and NH3-TPD), heteropoly acid incorporation causes higher acidity along with a negligible loss of structural a...