الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
This research work aims to elucidate the effectiveness of local by-product slag activated by a fairly new approach (magnetic water) and different chemical activators (calcium hydroxide, sodium silicate and sodium phosphate) on the fresh, mechanical, mass transport and microstructure characteristics of OPC matrix.
Thirteen OPC mortar mixes made with various slag contents (0, 20, 35 and 50%, by mass of OPC) with various chemical activators (calcium hydroxide, sodium silicate and sodium phosphate) were prepared to study the impacts of chemical activation and content of slag on: 1) the fresh properties (flowability, rate of flowability loss and rheology), using mortar flow table apparatus, 2) the mechanical properties (compressive and tensile strength) and 3) mass transport properties (sorptivity).
Thirteen OPC paste mixes made with different slag contents (0, 20, 35 and 50%, by mass of OPC) with various chemical activators (calcium hydroxide, sodium silicate and sodium phosphate) were prepared to study the impacts of chemical activation and content of slag on the microstructure characteristics (hydration products and pore structure) of OPC matrix, by means of thermo-gravimetric analysis and de-sorption approaches.
Also, this research aims to investigate the fluidity, strength, and durability related characteristics, of mortar made with or without magnetic water and contained ground granulated blast-furnace slag (GGBS). The test variables included the magnetic strength of water (0, 0.5, 0.8, and 1.2 tesla) and different content of slag (20, 35 and 50% by weight of cement).
The main findings of this investigation were as follows:
1- The incorporation of chemically activated local by-product slag in OPC mortar mixes has led to notable changes in their fresh properties, increasing of flowability, decrease of rate of flowability loss and improvement of rheological parameters.
2- The use of GGBS in OPC concrete has led to a significant improvement in its compressive and tensile strength, porosity and sorptivity.
3- using of magnetic water has led to improve the fluidity and notable enhancement the compressive and tensile strength, porosity and sorptivity of OPC matrix, when compared with corresponding properties of OPC matrix made with tap water. However, these enhancements in all properties are mainly dependent on the magnetic strength of water and the content of slag.
4- Remarkable enhancements in microstructure, mechanical and mass transport properties of OPC matrix were produced as a result of utilizing slag content of 20% by mass of OPC compared to the corresponding of these achieved with the other contents.