Fibers have the characteristics to enhance the endurance of concrete. One of them is carbon fiber. These carbon fibers have superb mechanical properties and maybe utilized more effectively. This study is focused towards analyzing the variation in strength of carbon fiber concrete at variable fiber contents and to establish it with that of conventional concrete. The mechanical properties analyzed are compressive strength, split tensile strength, flexural strength of carbon fiber concrete at (0%, 0.25%, 0.5%, 0.75%, 1%, 1.25%) percentages by volume (...) of concrete. Result data clearly shows percentage increase in compressive strength, split tensile strength and flexural strength for M25 grade of concrete in 7 days and 28 days with respect to the variation in % addition of carbon fibers. Maximum increase in strength was achieved at 1% addition of fiber content and it can be considered as optimum dosage. (shrink)

The production of Ordinary Portland Cement (OPC) causes havoc to the environment due to the emission of CO 2 as well mining also results in unrecoverable loss to nature. Estimated carbon This Project deals with the details of optimized Mix Design for normal strength concrete using packing density method. Dredged Marine Sand (DMS) which is produced during the operation of dredging. DMS is mixed with M-Sand in different ratios & Packing density is obtained using sieve analysis experimentally. This ratio’s of (...) different fine aggregate is introduced into the geopolymer concrete is the concrete in which alternate material for cement is used also alkali activated solution is used and Concrete made up of cement, aggregates, water & additives is the world's most consumed construction material since it is found to be more versatile, durable and reliable. Concrete is the second most consumed material after water which required large quantities of Portland cementemissions from cement production in 1994 were 307 MtC, 160 MtC from calcination, and 147 MtC from energy use which account for 5% of 1994 global anthropogenic CO 2 emissions. (shrink)

El presente artículo analiza los principales argumentos de la reacción comunitarista frente al liberalismo, debido a su enfoque individualista y su defensa del modelo contractual. Se destaca la presencia de una triple raíz que se hunde hasta la filosofía política de Aristóteles, Hegel y Marx. Finalmente, se analizarán los l ́ımites dela frontera entre ambas comprensiones de la política, as ́ı como los riesgos en que incurren las democracias modernas al omitir la presencia del libertarismo como ideología depositaria de principios (...) tanto liberales como comunitaristas. (shrink)