Despite the numerous advantages of using concrete with high strength capacity, the brittle behavior of high strength concrete (HSC) and higher production cost has limited its use in the construction industry. This research aims to develop a cost-effective approach for production of high strength self-compacting concrete with desirable performance in either compressive or tensile loading conditi...

INTRODUCTION There is growing interest in preventable, non-smoking causes of chronic obstructive pulmonary disease (COPD), among which are chronic exposures to respiratory irritants in the workplace. SOURCES OF DATA Reviews of occupational COPD in specific occupations and industries and in general populations; supplemented with other or more recently published material. AREAS OF AGREEMENT T...

deterioration of concrete structures in the gulf region is a serious problem. penetration of chloride ion into concrete is responsible for such early deterioration. determination of chloride diffusion coefficient is an effective way to predict the service life of concrete structures. in order to investigate the performance of concrete mixtures in such environments, ordinary and silica fume conc...

The article is devoted to the development of composition and production a porous glass composite for thermal insulation purposes using single-stage technology with reduced NaOH content at temperatures not exceeding 850 °C. Silica-containing natural (tripoli) technogenic (silica fume) raw materials were used synthesis composite. charge based on tripoli silica fume proposed, which ensures energy-...

expansive soils may cause disaster if not adequately taken care of. lime continues to be commonly used for modification of these types of soils although it may have limited success in some applications. thus, the present study was performed to address the viability of using silica fume (sf) as industrial waste to modify the behavior of expansive soils. this achieves the double objectives of ove...