In order to evaluate the importance of newly-formed minerals in the premature deterioration of Iowa highway concrete, a two-phase study was undertaken. In the first phase, we performed petrographic and SEM/EDAX analyses to determine chemical and mineralogical changes in the aggregate and cement paste of samples taken from Iowa concrete highways that showed premature deterioration. In the second...

the term ‘deteriorated texture’ gives all experts as well as ordinary people almost the sameimpression. despite common points in images, the differences put iran cities in different categories based on deteriorated textures. this classification not only has negative effect on the audience from mental point of view but causes various problems for the experts in determining interference method. f...

The objective of the study is to analyse the actual availability of water resources and its impact on human health deterioration. The following aspects were studied: (a) human activities and environmental deterioration; (b) statistics on the availability and demand of water resources; (c) urban and industry wastes as sources of water resources contamination; and (d) deleterious effect of contam...

In this study, the possible effects of overfishing pressure on local Salmonid populations and critical environmental changes that have occurred in wild habitats been deteriorating since beginning 21st century were investigated Northeast Anatolia. research, methods including quantitative qualitative impact assessments used to determine anthropogenic effects. addition numerical data, observations...

a deterioration and the consequent status of feeblemindedness, this child must receive treatment different from that given the entirely normal individual. The mentality, both functional and structural, must be determined by an analysis which will reveal the phases where special training is required by the child. This analysis is made by the use of well defined and carefully administered tests. ...

Deterioration of concrete, which is mainly due to ignorance of environmental and service conditions, causes considerable costs for the construction industry. With this in mind, in this paper, results of investigation into the major causes of concrete deterioration in the Urumie Lake are presented. For the purposes of this investigation, samples were obtained by mixing two types of cement (OPC t...