The sections composed of concrete and steel, which include concrete-encased concrete-filled tubes, generally have defects due to the low tensile strength of concrete. Therefore, an appropriate method was used for the combination of concrete-filled tubes (CFT) and prestressing strands which is encased in concrete. The conventional design guidelines are commonly developed for materials with norma...

Abstract The paper studies the influence of light weight aerated autoclaved concrete (AAC) partitioning walls to a medium height reinforced structure, in Bucharest (Romania). building is designed as framed structure with non-bearing AAC placed certain bays. There bearing full bricks masonry wall one Full are used because its high strength compared AAC. aim determine importance placement, both a...

concrete is one of the most important construction materials widely using in hydraulic structures, such as lining of irrigation canals. concrete durability might be decreased due to the environmental or inner factors with physical, chemical or mechanical reactions. since, the climatologically condition is variable in most part of the country, local studies are needed to evaluate of the weakness...

pervious concrete is a concrete mixture prepared from cement, aggregates, water, little or no fines, and in some cases admixtures. the hydrological property of pervious concrete is the primary reason for its reappearance in construction. much research has been conducted on plain concrete, but little attention has been paid to porous concrete, particularly to the analytical prediction modeling o...

concrete has a special place at the current century; it has been and is the most widely used building material. producing concrete has several environmental impacts that should be considered to prevent consequent problems. in recent years, several methods have been developed to produce concrete that is compatible with the environment and sustainable development basis. in these concretes, beside...

<p>The microbial consortia incorporated in bio concrete should have traits such as high alkali resistance and the ability to form endospores overcome mechanical chemical stresses produced during preparation. The primary intent of our work is segregate identify calcium carbonate precipitating microorganisms with a strong urease activity, compare their potential for preparation concrete, ev...

A reinforced concrete building with masonry infill is most common type of construction in India. Traditionally, conventional clay bricks or blocks which are heavy rigid materials have been used as Infill wall. Though, AAC (aerated light weight concrete) lightweight, flexible that provides insulation and fire resistance lower impact on environment, can be (MI) material buildings. now also availa...

Fly ash is industrial residue from the coal combustion in electric and steam generating plants recognized as an environmental pollutant. contains a high concentration of silica alumina can be used geopolymer concrete. Studies use fly concrete mixture has been developing recent decades. This review focuses on characteristics hybrid concrete, its resistance peat environment. The made by activatin...

semiconducting carbon nanofibers (cnf) are prepared from three different sources, i.e., acetylene, ethanol, and cotton by the chemical vapor deposition (cvd) process. these fibers are having rich elastic, engineering and conductivity properties. fresh self-compacting concrete (scc) flows into place and around obstructions under its own weight to fill the formwork completely and self-compact, wi...