EFFECT OF ADDITION OF FLY ASH AND WIRE TO COMPRESSIVE STREGTH AND TENSILE STRENGTH CONCRETE QUALITY K-225
| Main Author: | Gunarti, Anita Setyowati Srie |
|---|---|
| Format: | Article eJournal |
| Bahasa: | eng |
| Terbitan: |
Jurnal Fakultas Teknik: RESULTAN
, 2012
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| Online Access: |
http://www.ejournal-unisma.net/ojs/index.php/resultan/article/view/537 |
Daftar Isi:
- Various studies and experiments in the field of concrete as part of efforts to improve the quality of concrete. One way to improve the quality of concrete is to provide addedingredients (additives). Although concrete has many advantages but the brittle nature ofconcrete has led to a very small tensile strength. In practice to withstand large tensile steelreinforcement used correctly placed, but the fine transverse cracks are still frequently occurnear the steel that supports the tensile force. One way to be taken to correct theseshortcomings so as to increase the tensile strength of concrete can be done by adding thefiber material in the concrete. This study adds a wire as a fiber material and fly ash as alubricant and cementitious. The purpose of this research and testing to determine the effect of addition of fly ash and wirein the concrete mixture to compressive strength, and tensile strength of concrete with thequality of K-225 plans. This research was conducted by examining the materials, mix design, and makingconcrete test specimens in the laboratory. Material testing using ASTM standards (AmericanSociety for Testing and Material), mix design used while making the design according to theU.S. Bureau of Reclamation. The wire 1mm and 2cm long that is composition of theaddition of fiber equal to 0.1%, 0.2%, and 0.3% against the specific grafity of wire. Theaddition of fly ash in this study by 10% by weight of cement and 0% (normal concrete) as acomparison with the age of 3 days treatment, 7 days, 21 days, and 28 days and performedtesting of compressive strength test and tensile strength. Test results showed the optimum compressive strength obtained at a concentration of0.3% fiber at 28-day compressive strength that is increased by 10.4% of normal concretecompressive strength and tensile strength increased by 20.4% of the tensile strength ofnormal concrete.There are differences in the phenomenon of a rift between the concrete andnormal concrete fiber is in a normal concrete cracking when tested immediately when theload reached its maximum limit, while the fiber concrete when tested broke slowly as you loadup to its maximum limit. Keywords: compressive strength, tensile strength, fiber concrete, fly ash, wire