The use of cementitious products isincreasing in the world,Thusreplacement part of cement with pozzolanic materials reduced energy consumption and preserve natural resources and the environment and also improve the mechanical properties and durability of the cement mortar.Furthermore Nano technology has promptedto tremendous developments in technology of building materials in recent yearsso use...

In order to reduce cement consumption, which is one of the significant factors in man-made carbon dioxide emissions, studies are being conducted on issues such as alternative building materials. Replacing with fly ash at forefront reduction studies. However, use a high sulfate content structural elements limited by European and American standards. Here production pumice stones used wall materia...

Abstract Following rapid decompression in the conduit of a volcano, magma breaks into ash- to block-sized fragments, powering explosive sub-Plinian and Plinian eruptions that may generate destructive pyroclastic falls flows. It is thus crucial assess how up fragments. This task difficult, however, because subterranean nature entire process original size pristine fragments modified by secondary ...

This study presents the effect of incorporating metakaolin (MK) on the mechanical and durability properties of high strength concrete for a constantwater/binder ratio of 0.3.MKmixtureswith cement replacement of 5, 10 and15 %weredesigned for target strength and slump of 90 MPa and 100 ± 25 mm. From the results, it was observed that 10 % replacement level was the optimum level in terms of compres...

Various papers based on high performance concrete (HPC) and their behaviour were studied. HPC’s containing different mineral as well as chemical admixtures exhibits different properties in fresh as well as hardened states. Several factors determine these properties like: type of mineral as well as chemical admixture, type of aggregates, water-cement ratio, curing method etc. Each paper takes in...