الفهرس 
Chapter (1) introductionOnly 14 pages are availabe for public view
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Abstract
1:-Introduction: - Concrete is one of the most commonly used materials in construction and construction because of its unique properties from the rest of the material (Stones, clay) But despite all those features, research is continuing to improve all those characteristics in terms of resistance and high ability to resist the surrounding conditions and their formability and durability, Since mixing materials as well as water used for mixing play an important role in affecting the resistance and properties of geopolmer concrete, the water used negatively affects the resistance to concrete if it is found with some impurities, which may lead to iron repellence. This is why the adequacy of water used for mixing has to be taken into account, and the water added chloride and sulphate to improve the tailings. This element (water) in affecting the properties of geopolymer concrete had to give great attention to research and study, hence the idea of using magnetized water in concrete to improve its resistance rather than expensive additives The cost of magnetized water, as well as the natural and chemical materials used, is very low if compared to other methods and cement, so we will do some experiments to develop these characteristics. Magnetic energy affects water because of the nature of the composition of the water atoms itself. When placing water molecules inside the magnetic field, the hydrogen bonds between the molecules are rearranged with an increase in oxygen atoms, which play their part in improving water properties and reducing impurities and salts that negatively affect the architectural properties of geopolymer concrete2:- Research scope: Application of the improvement technique in the field of concrete by improving the properties of geopolymer concrete that includes fly- ash. 3:- Research objective: - Current study looks at mechanical properties in addition to the durability characteristics of FA-based geopolymer concrete. Moreover, the main objectives of this research are as follows: The effect of magnetized water studied on mechanical properties that included compressive strength, tensile strength, flexural strength, and durability properties that included water permeabilitye and water absorption ability of the geopolymer concrete and compared with results of reference mixtures. Study physical and chemical changes that occur to water after exposure to different intensity magnetic domains. Study physical and chemical changes of alkaline solution prepared with magnetized water and compare it with the alkaline solution prepared with tap water. 4:- Steps Study: - In this research, a study was carried out of previous research on self-bloody concrete. The study then examined the properties of the substances used during the research and described the practical programme and the main variables in the study and the various tests carried out, as well as the samples used. The tests for fresh and hardened concrete were then carried out, and the results of these tests were analysed. 5:- Summary of Study:- The goal of this research is to measure the effect of using alkaline activator (AA) made of MW on mechanical properties and durability of FA based GPC. The AA was mixture of sodium silicate (SS) and sodium hydroxide (SH) solution. Eighteen geopolymer concrete mixtures had been prepared and tested for workability, compressive strength, tensile strength, flexural strength, permeability and water absorption ability. The measured mixtures were divided into five groups by the thought-out factors as follows: Molarity (10M,16M,20M) and sodium silicate (SS) to sodium hydroxide (SH) (2, 2.5, 3) and alkaline solution ratio (AA) to ratio FA (0.4, 0.5, 0.6) and treated temperature (60 °c, 90 °c, 115 °c) for 48 hours, finally extra water as a percentage of FA (10%, 12.5%, 15%). Nine mixes were prepared with AA made of MW and the other nine mixes were the same but prepared with AA made of TW. The preparation of the MW involved passing TW across magnetic domains of 1.6 Tesla to 1.4 Tesla respectively intensities for 150 cycles. MW-based AA properties have been analyzed and compared to traditional TW-based AA properties. To examine closely, a scanning electronic microscope (SEM) analysis was conducted on some selected mixtures to illustrates the effect of variables on GPC microstructure. Results of hardened concrete tests showed that the optimum GPC properties achieved at 0.4 AA/FA, 16M molar concentration, 2 SS/SH ratio, 10% extra water ratio, and 115 °c treated temperature, using magnetized water. The GPC slump decreased when using TW; however, using MW enhanced the slump of GPC by up to 100%. The compressive strength was improved by 193%, 192%, and 124% at 7 days, 28 days, and 56 days, respectively with using 16M with the presence of MW. The compressive strength was improved by 32%, 30%, and 28% after 7 days, 28 days, and 56 days respectively with using 20M and with the presence of MW both splitting tensile strength and flexural strength of GPC with MW behaved similar to that of the corresponding compressive strength. Using tap water in GPC increased its water permeability. However, the magnetized water was able to decrease the GPC water permeability by up to 13%.And, Sorptivity coefficient of GPC with TW increased. However, the MW was able to decrease the Sorptivity coefficient of GPC by up to 26%. The microstructural analysis showed that using MW clearly enhanced the surface morphology of GPC. GPC made with MW demonstrated that it could be useful for concrete structural applications as an Eco-friendly concrete.