الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 123 |  |  |
| | | from | 123 | | |
Abstract
Concrete is considered the most widely used building material on the world due to its flexibility, durability, high compressive strength, global availability and low cost. Portland cement has always been an essential component of the concrete. The manufacture of cement requires a large amount of resources and consumption of a lot of energy and the emission of a lot of carbon dioxide, which known for its harmful impact for the environment.This study aims to produce green concrete Eco friendly using fly ash which produced from industrial waste. It also aims to study the effect of high temperatures on bond strength of concrete at elevated temperatures. A comparison was made of laboratory results and results from the statistical program by ANOVA test. Six mixtures were designed and implemented using different proportions of FA ranging from 10 % to 50% as a replacement of cement content. Both superplasticizer and water were constant for all mixtures. Four tests were conducted on the samples, including compressive strength, flexural strength, elastic modulus and bond strength. As for the pull out test, the test was carried out after exposing the cylindrical samples to different temperatures 200 °C, 400 °C, and 600 °C. The samples left for 24 hours to cool down and then they have been tested. The results showed the possibility of producing green concrete (environmentally friendly concrete) by using industrial waste materials. The best percentage of replacement is 20% fly ash. At this ratio the compressive strength value was 46.3 MPa and the flexural strength of 8.3 MPa at the age of 56 days.While the value of the modulus of elasticity decreases when adding FA at all ratios. The results of the bond strength gave satisfactory results up to a temperature of 200 ºC for all mixtures. At 400 ⸰C and 600 ⸰C, the bond strength of all mixes decreased significantly.