موضوعات
آموزش و پرورش
ادبیات و زبان
پزشکی، دندانپزشکی و داروسازی
تاریخ و جغرافیا
داستان و رمان
دیگر
دین و فلسفه
روانشناسی
ریاضیات و آمار
سلامتی، تناسب اندام و رژیم غذایی
شیمی و پلیمر
علوم اجتماعی و حقوق
علوم زیستی و بیوتکنولوژی
فیزیک و نجوم
کامپیوتر و اینترنت
کتابهای کودکان و داستان
کسب و کار و اقتصاد
کشاورزی و دامپزشکی و غذا
معماری
مهندسی و فناوری
هنر و تئاتر
محصولات
Integral Waterproofing of Concrete Structures - Original PDF
نویسندگان: خلاصه: Concrete is the most popular construction material, which has a widespread range of structural applications, under numerous environmental conditions and under various levels and types of mechanical loads. It is used in buildings, infrastruc- tures, dams etc. Its suitability and durability require a set of mechanical, physi- cal, and chemical characteristics in order to extend its service life. Concrete durability is defined according to Concrete Terminology by American Concrete Institute (ACI) [1], as “the ability of concrete to resist weathering action, chemi- cal attack, abrasion, and other conditions of service.” This performance is simply based on concrete chemistry. Concrete durability properties are determined by its chemical structure and porosity. These structural characteristics are determined by cement components and their reactions with water. Understanding concrete durability problems and solutions requires a sufficient knowledge about concrete chemistry.
Plastic hinge based methods for advanced analysis and design of steel frames : an assessment of the state-of-the-art - Scanned Pdf with Ocr
نویسندگان: خلاصه: Plastic hinge based methods for advanced analysis and design of steel frames : an assessment of the state-of-the-art - Scanned Pdf with Ocr Donald W. White and W. F. Chen
Iron Oxides by Damien Faivre - PDF
نویسندگان: خلاصه: As the name of the book “Iron oxides: from nature to applications” suggests, iron oxides are not only widespread in the environment, but also widely used by mankind in a variety of applications (Figure 1.1). Both this ubiquitous presence in nature and the utilization as tools have been established for cen- turies and are still valid today. The first illustrative examples of iron oxides certainly are compass needle or rust (Figure 1.2). Iron oxides are present in solid, liquid, and gaseous environments, with respective examples such as rocks, as mineral inclusion in swimming bacteria or in aerosols. Depending on the type of use, several sources of iron oxides exist. Applications range from the heavy steel production to medicine and art. The different aspects of mineral formation and their use as well as modern characterization techniques are reviewed in this book
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