Mitigation of greenhouse gas emissions is becoming a significant factor in all industries. Cement manufacturing one the industries responsible for emissions, specifically carbon dioxide emissions. Pozzolanic materials have long been used as cement additives due to pozzolanic reaction that occurs when hydrated and formation cementitious material similar cement. In this study, shale, which common...

The reliability of concrete structures is closely related to the durability materials stable under external environmental conditions. present study aimed at analysing effect a prospective hardening additive containing calcium alumoferrites and sulfate (AFCS) as substitute (5–15%) for Portland cement. hardened cement pastes were characterized by water absorption, shrinkage, strength corrosion re...

BACKGROUND Environmental asbestos pollution can cause malignant mesothelioma, but few studies have involved dose-response analyses with detailed information on occupational, domestic, and environmental exposures. OBJECTIVES In the present study, we examined the spatial variation of mesothelioma risk in an area with high levels of asbestos pollution from an industrial plant, adjusting for occu...

In this study, the elevated temperature flexural strengths of lightweight foamed concrete (LFC) containing fly ash (FA) and polypropylene fiber (PF) was investigated experimentally and statistically. The variables included were the temperature degrees (in a range of 20 to 600°C), LFC densities of 600, 800, 1000, 1200 and 1400 kg/m3 and additive content. Two mixes were made by replacing 15% and ...

Clinker is the raw material used in manufacture of cement. However, this very harmful to environment, since it estimated that for every ton clinker produced, about 1.0 CO2 released into atmosphere. For reason, alternatives were sought use other materials are less environment. This has led industrial by-products with aim increasing their and thus reducing amount carbon Blast furnace slag a by-pr...

This study demonstrates the utility of hydroxyapatite (HA) microspheres as an additive to enhance the radiopaque properties, biocompatibility, and osteoconductivity of poly(methyl methacrylate) (PMMA)-based bone cements. HA microspheres were synthesized using spray drying. They had well-defined spherical shapes, thus allowing for the production of PMMA/HA composites with a very high HA content ...

One of the essential tasks for a sustainable future is to reduce harmful emissions into atmosphere significantly. Cement production world’s largest industrial carbon pollutant, accounting 8 % global emissions. More than 2.2 gigatons dioxide are emitted every year. Therefore, reducing energy intensity products and number in cement becoming critical. strategy most energy-consuming component – cli...

Potassium borates, which are widely used in welding and metal refining industry, as a lubricating oil additive, cement additive, fiberglass additive and insulation compound, are one of the important groups of borate minerals. In this study the production of a potassium borate mineral via hydrothermal method is aimed. The potassium source of potassium nitrate (KNO3) was used along with a sodium ...

Abstract Pozzolanic additives set off a fundamental part of high strength and most durable concrete mix design. materials include natural products such as volcanic product (ashes pumice) by-product includes metakaolin, rice husk ash, silica fume, fly ash etc. Diatoms have been utilized one the pozzolanic in industrial sectors construction industries to improve rheological mechanical properties ...

With the industrialization, industrial by-products are produced in large quantities and creates nuisance to natural habitats. The disposal of these wastes like fly ash, marble powder, construction demolition (C&D) waste, brick agricultural etc. has become potential threat ecosystem need some real solutions. direct such into open land or water bodies causes circumambient pollution. One solut...