Cement

1. INTRODUCTIOLN In 1906, a small local cement company established in northern Mexico, it called CEMEX. But, today, almost 100 years later they became the third largest cement company in the world, and a largest international trader. After numbers of acquisitions, CEMEX had 15 billion US dollars of turnover and operated cement plants in 15 countries, having 50,000 employees worldwide. (CEMEX Company Profile | CEMEX UK, 2017) What have happened in these hundred years? It can be talked from the 7…

invest in three cement companies: Lucky Cement, D.G. Cement, and Attock Cement. For our debt instruments, we decided to invest in Standard Chartered Bank of Pakistan and Engro Corporation LTD. After reviewing the websites of Pakistan Credit Rating Agency Ltd (PACRA) , SECP, Islamabad Stock Exchange, Karachi Stock Exchange, and various other sources, we extracted the following information. We have created a portfolio for our investments in the tables…

treatment sequelae seen in more than 50% of orthodontic patients.1 Streptococcus mutans is prime bacteria commonly associated with enamel demineralization followed by lactobacilli in the oral cavity.2,3 Orthodontic cements such as glass ionomer cements (GICs), zinc phosphate cements (ZPC) are…

ABSTRACT The reactivity of acid base cements forming hydroxyapatite (HA) such as, β-tricalcium phosphate (β-TCP) and dicalcium phosphate dehydrate (DCPD). Amorphous calcium phosphates, prepared by precipitation from supersaturated solutions, can also react to form apatitic cements since they are thermodynamic unstable with respect to HA and have a setting reaction more independent of particle size. Calcium phosphate cement containing an antibiotic can be used for filling bone defects and to…

METHODOLOGY: The evaluation of ceramic waste and hypo sludge for replacement of cement material begins with the concrete testing. Concrete contains cement, water, fine aggregate, coarse aggregate and grit With the control concrete, i.e 0%, 5%, 10%, 15% ,20% of the cement is replaced with ceramic waste & hypo sludge the data compared with data from a standard concrete without ceramic waste and HYPOSLUDGE individually. Three cube samples were cast on the mould of size 150 X 150 X 150 mm and…

Case Study Analysis Name: Institutional affiliation: Date: Issues that need to be corrected or improved CEMEX has made tremendous steps in trying to have a constant improvement in the understanding climate change and the need to address challenges that they face. This understanding of climate change and the human-induced components of climate change were as a result of complex scientific work around the world. The general scientific consensus is that human activities pose major…

contains ordinary Portland cement as a primary binder and production of ordinary Portland cement causes 7% of the total greenhouse gases in to the earth’s atmosphere (Malhotra 2002) and production of the ordinary Portland cement produces carbon-di-oxide in mainly two ways , they are burning of fossil fuels and the other is calcination of lime stone into lime. Quarrying of the lime stone is also another environmental degradation. The production of 1 tonne of cement needs about 1.6 tonnes…

CEE 3030 Construction Materials class mixed concrete with varying water cement ratios and created three, 3” diameter by 6” high cylinders and three, 6” diameter by 12” high cylinders. The cylinders were cast according to the ASTM C31 standard. The class was divided into sections, then the sections were divided into teams. The sections mirrored each other, and teams created concrete with 0.40, 0.44, 0.48, and 0.52 water cement ratio. Over the next 28 days the cylinders were tested for compressive…

Critically evaluate the expansion strategy of a computer hardware firm by analysising “the Cemex Way”. In a rapidly changing and challenging global business environment, in order to maximize the optimization and meet current market dynamics, it is good for a computer hardware firm to exam some previous strategies from other enterprises before launching a successful expansion plan. There are a lot of global companies with very successful expansion strategies which are worth to summarize such as…

IN CONCRETE 2.3.4.1. WORKABILITY OF THE CONCRETE Fly ash particles are spherical in shape with high fineness and low carbon content this reduces the quantity of water required for a given slump (Zulu, 2014). This means that a mix with Portland cement would have a higher water content of the same workability compared to the fly ash mix. It is estimated that each 10% of fly ash added to a mix reduces the water content by 3%, this is dependent on the nature of the ash and other parameter of the…