الفهرس 
AbstractOnly 14 pages are availabe for public view
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Abstract
The thesis is a study to enhance the physical and mechanical properties of the cement in addition to disposal of rice husk amount which cause a negative environmental impact.
Nanotechnology allows developing the rice husk ash with the specific properties to achieve significant improvement of physical and mechanical properties of cement. This is due to the fact that nanosized rice husk ash consider as a special type of pozzolans which can be used in cement according to ASTM C618. Or at least keep the cement quality within the specification and disposal of rice husk amount by useful way which lead to reduce CO2 emission resulting from reduction in the material required to produce cement.
Chapter (1)
It includes an introduction for the challenges faced RHA disposal, CO2 emission from cement industry and the challenges to use cheap pozzolan instead of the limited and expansive supplies. It also, provided an overview of the previous studies which discuss the preparation and effect of micro RHA on cement performance. Finally, it shows the novelty of the current study. It also, contains the references which are used for this chapter.
Chapter (2)
This chapter described the optimization of nanostructured and nanosized RHA preparation procedures and characterization to ensure that produced RHA comply with the specification and achieve the best result. It was concluded that the optimum conditions to produce nanostructured RHA are burning for 2 h at temperature 700 °C combined with cooling 3 times and mass of RH (g)/volume of the evaporating dish (ml) is 0.16 and for nanosized RHA we should use Attritor ball mill. The chapter contains an introduction, materials, methods, the discussion of the results, conclusion and finally the references.
Chapter (3)
This chapter described the impact of nanostructured and nanosized RHA on physico-mechanical properties of cement. The analysis showed that the pozzolanic reactivity is more correlated with the RHA external SSA than the internal plus external SSA. The chapter also studied the effect of RHA on cement performance such as Blain, sieve, water of consistency, initial and final setting time. The chapter contains an introduction, materials, methods, discussion of the results, conclusion and finally the references.
Chapter (4)
The chapter gives the conclusion and recommendation related to the thesis.