منابع مشابه
Effect of crumb rubber concentration on the physical and rheological properties of rubberised bitumen binders
The increase use of crumb rubber in flexible pavements requires the better understanding of its effect on physical and rheological properties of rubberised bitumen binders. The performance properties of rubberised bitumen binder are influenced by the blending conditions and crumb rubber content. The main objective of this research is to investigate the effect of various crumb rubber content on ...
متن کاملAdhesion of Bitumen: Screening and Evaluating Laboratory Testing Techniques
A huge number of laboratory testing techniques is known for assessing adhesion properties between bituminous materials and aggregates in laboratory. Besides simple empirical tests (usually established for binder specification and quality assurance), like Rolling Bottle Test or static immersion test, elaborate test methods are in use like contact angle measurement of either bitumen droplets on m...
متن کاملNecessity of Routine Repeat Testing of Critical Values in Various Working Shifts
Background & Objective: Accurate and timely reporting of critical values is an important issue. There is some doubt whether repeat testing of critical values would offer any advantage over single testing or not. The aim of this study was evaluation of utility of routine repeat testing of critical values in our referral center and to compare probable variations in different work...
متن کاملMaking HIV Testing Routine
In 1996, approximately one quarter of the AIDS prevention budget of the CDC was allocated to HIV testing, predominantly for low-risk populations.1It was their single biggest HIV prevention expenditure. Dr Eric Goosby, then director of the HIV/AIDS Policy Office, argued that this “was not efficient nor effective in picking up HIV-positive people."1 Some dozen years later, the CDC is promulgating...
متن کاملDoes routine repeat testing of critical laboratory values improve their accuracy?
Background: Routine repeat testing of critical laboratory values is very common these days to increase their accuracy and to avoid reporting false or infeasible results. We figure that repeat testing of critical laboratory values has any benefits or not. Methods : We examined 2233 repeated critical laboratory values in 13 different hematology and chemistry tests including: hemoglobin, white...
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ژورنال
عنوان ژورنال: Civil and Environmental Engineering
سال: 2017
ISSN: 2199-6512,1336-5835
DOI: 10.1515/cee-2017-0017