Alaa M. Rashad
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View article: Mitigating water curing strength degradation, enhancing water resistance, and improving the properties of metakaolin geopolymer cement with CaO
Mitigating water curing strength degradation, enhancing water resistance, and improving the properties of metakaolin geopolymer cement with CaO Open
View article: Nd2O3-induced modifications in PVA-Ce2O3 Composites: Correlating structure, optical properties, and radiation shielding efficiency
Nd2O3-induced modifications in PVA-Ce2O3 Composites: Correlating structure, optical properties, and radiation shielding efficiency Open
View article: Egyptian basalt powder as a fortifier for improved performance and sustainability of alkali-activated slag cement
Egyptian basalt powder as a fortifier for improved performance and sustainability of alkali-activated slag cement Open
As is well established, slag precursor offers promising performance characteristics; however, its origin as an industrial byproduct leads to variability in both mineralogical and chemical composition. Furthermore, the global availability o…
View article: Calcium formate as a modifier agent for calcium hydroxide-activated slag cement
Calcium formate as a modifier agent for calcium hydroxide-activated slag cement Open
Calcium hydroxide (Ca(OH) 2 , or CH) presents a sustainable, cost-effective, and safer alkaline activator for slag compared to traditional activators like NaOH and sodium silicate. However, its application is constrained by the lower mecha…
View article: Egyptian feldspar for multidimensional performance boosts in alkali-activated slag concrete
Egyptian feldspar for multidimensional performance boosts in alkali-activated slag concrete Open
The environmental impact of conventional concrete underscores the urgent need for sustainable alternatives. Alkali-activated slag (AAS) concrete offers a lower-carbon solution, Yet its performance remains open to optimization. This study e…
View article: Valorization of calcined Egyptian marble waste as a reactive CaO additive for fortifying alkali-activated slag cement
Valorization of calcined Egyptian marble waste as a reactive CaO additive for fortifying alkali-activated slag cement Open
Egypt’s thriving marble industry produces extensive waste marble powder (WMP) amounts. Recycling plentiful waste safely and effectively is a key national concern, as improper disposal poses a serious threat to the environment. This study a…
View article: From Egyptian stone to sustainable binder: The impact of basalt powder on metakaolin geopolymer cement
From Egyptian stone to sustainable binder: The impact of basalt powder on metakaolin geopolymer cement Open
Metakaolin (MK) geopolymers offer a promising avenue for sustainable construction; however, the potential contribution of incorporating natural materials such as basalt powder (BP) remains underexplored. Egypt possesses abundant reserves o…
View article: Effect of Poly (Methyl Methacrylate) Solute Concentration in Chlorobenzene on the Optical Properties of Films Prepared by Spin Coating
Effect of Poly (Methyl Methacrylate) Solute Concentration in Chlorobenzene on the Optical Properties of Films Prepared by Spin Coating Open
This study addresses the effect of solute concentration on the optical properties of poly(methyl methacrylate) (PMMA) films prepared using the spin-coating technique. The films were fabricated at three concentrations (1.5%, 2% and 2.5%) an…
View article: Antioxidant properties and chemical composition of white truffle Tirmania nivea and its host plant Helianthemum lippii
Antioxidant properties and chemical composition of white truffle Tirmania nivea and its host plant Helianthemum lippii Open
This study aims to determine the phytochemical contents and the antioxidant activity of the white truffle Tirmania nivea (Desf.) Trappe, and its host plant Helianthemum lippii (L.) Dum. Cours. Standard procedures were applied for phytochem…
View article: The potential application of partial activation for synthesizing one-part alkali-activated slag/fly ash precursor: A way for commercializing alkali-activated materials
The potential application of partial activation for synthesizing one-part alkali-activated slag/fly ash precursor: A way for commercializing alkali-activated materials Open
In this paper, a new strategy is applied to synthesize a safe-to-use one-part (OP) alkali-activated binder via controlling the activation rate of blast furnace slag (BFS) and fly ash (FA). The proposed strategy involved creating a reactive…
View article: A novel FFNN-AHO hybrid predictive model for enhancing the performance of jet-cooled PVT system
A novel FFNN-AHO hybrid predictive model for enhancing the performance of jet-cooled PVT system Open
Photovoltaic-thermal (PVT) systems are common in the conversion of solar energy to electrical and thermal energy. The performance of such systems depends on the environmental conditions in which these systems are applied. This paper presen…
View article: Review of: "Effective use of Waste Materials: A Case Study of Utilization of Fly Ash in Flexible Pavement Structures"
Review of: "Effective use of Waste Materials: A Case Study of Utilization of Fly Ash in Flexible Pavement Structures" Open
In this paragraph "Classes of Fly Ash.Based upon the proportions of its chemical constituents, fly ash can be classified into class 'C' and class 'F'.Although researchers have not limited themselves to this classification……….",the authors …
View article: Review of: "Shear performance of polypropylene fiber reinforced high-strength self-compacting concrete beams"
Review of: "Shear performance of polypropylene fiber reinforced high-strength self-compacting concrete beams" Open
View article: Application of pretreated dealuminated kaolin as a modifier agent for alkali-activated slag cement
Application of pretreated dealuminated kaolin as a modifier agent for alkali-activated slag cement Open
The alum industry is increasing rapidly worldwide, which leads to an increase in waste resulting from this industry, which was named dealuminated kaolin (DK). Recycling this waste into building materials presents the best solution for its …
View article: A Concise on the Effect of Calcium Oxide on the Properties of Alkali-Activated Materials: A Manual for Civil Engineers
A Concise on the Effect of Calcium Oxide on the Properties of Alkali-Activated Materials: A Manual for Civil Engineers Open
As known, calcium oxide (CaO) is an alkaline material, which can be used widely to increase the clay-containing soils load carrying capacity, to produce aerated concrete and calcium aluminate cement. In the last few years, introducing CaO …
View article: Biphasic positive airway pressure in the management of acute respiratory distress syndrome: a comparative study
Biphasic positive airway pressure in the management of acute respiratory distress syndrome: a comparative study Open
Background Biphasic positive airway pressure, also known as BIPAP, is a type of pressure-controlled ventilation that permits unrestricted spontaneous breathing at any time during the ventilatory cycle. Our study’s objective was to compare …
View article: A synopsis about the effect of basalt and natural fibers on geopolymer properties
A synopsis about the effect of basalt and natural fibers on geopolymer properties Open
Currently, the introducing of basalt and natural fibers into different geopolymer swift growth of geopolymers. Despite of geopolymers have good properties such as fire resistance, flame resistance, higher compressive strength and higher du…
View article: The effects of biphasic positive airway pressure in patients with chronic obstructive pulmonary disease: A comparative study
The effects of biphasic positive airway pressure in patients with chronic obstructive pulmonary disease: A comparative study Open
Background:The ventilatory mode known as biphasic positive airway pressure (BIPAP) was developed by BAUM et al. and first used in clinical settings in the late 1980s.BIPAP is built on the basis of pressure-controlled ventilation and sponta…
View article: Significance of anti-endothelial cell antibodies in paediatrickidney transplant recipients
Significance of anti-endothelial cell antibodies in paediatrickidney transplant recipients Open
ENWEndNote BIBJabRef, Mendeley RISPapers, Reference Manager, RefWorks, Zotero AMA Ismail M, Fadel F, Rashad A, et al. Significance of anti-endothelial cell antibodies in paediatric kidney transplant recipients. Pediatria Polska - Polish Jo…
View article: An investigation on alkali-activated slag pastes containing quartz powder subjected to elevated temperatures
An investigation on alkali-activated slag pastes containing quartz powder subjected to elevated temperatures Open
In this work, the opportunity of employing crystalline silica in the form of quartz powder (QP) to increase the fire resistance of alkali-activated slag (AAS) has been explored. The ground granulated blast-furnace slag (designated as slag)…
View article: A synopsis manual about recycling steel slag as a cementitious material
A synopsis manual about recycling steel slag as a cementitious material Open
Steel slag (SS) is an industrial product of steel making. It can be produced in either an electric arc furnace (EAF), of which steel is produced by melting scrap steel, or a basic oxygen furnace (BOF), of which iron is converted to steel. …
View article: Comparative Study between Single-Level Anterior Cervical Discectomy and Fusion using Cage and Plate or Cage Alone
Comparative Study between Single-Level Anterior Cervical Discectomy and Fusion using Cage and Plate or Cage Alone Open
Background: anterior cervical discectomy and interbody fusion (ACDF) is a well-accepted management option for the treatment of persistent cervical radiculopathy or myelopathy due to cervical disc prolapse.Typically a fusion is performed to…
View article: A synopsis about the effect of basalt and natural fibers on geopolymer properties
A synopsis about the effect of basalt and natural fibers on geopolymer properties Open
Currently, the introducing of basalt and natural fibers into different geopolymer swift growth of geopolymers. Despite of geopolymers have good properties such as fire resistance, flame resistance, higher compressive strength and higher du…
View article: A synopsis about the effect of basalt and natural fibers on geopolymer properties
A synopsis about the effect of basalt and natural fibers on geopolymer properties Open
Currently, the introducing of basalt and natural fibers into different geopolymer swift growth of geopolymers. Despite of geopolymers have good properties such as fire resistance, flame resistance, higher compressive strength and higher du…
View article: Properties of Cement Pastes Doped with Very High Amounts of Ground Granulated Blast-furnace Slag
Properties of Cement Pastes Doped with Very High Amounts of Ground Granulated Blast-furnace Slag Open
In the current work, the properties of cement pastes doped with high amounts of ground granulated blast-furnace slag (HVS) were investigated. Portland cement (PC) was substituted with ground granulated blast-furnace slag (donated as slag) …
View article: An investigation on Portland cement replaced by high-volume GGBS pastes modified with micro-sized metakaolin subjected to elevated temperatures
An investigation on Portland cement replaced by high-volume GGBS pastes modified with micro-sized metakaolin subjected to elevated temperatures Open
Ground granulated blast-furnace slag (designated as GGBS) has been utilized as building material due to the environmental, economic and technical benefits. In this study, the possibility of improving compressive strength of high-volume GGB…
View article: A comprehensive overview about recycling rubber as fine aggregate replacement in traditional cementitious materials
A comprehensive overview about recycling rubber as fine aggregate replacement in traditional cementitious materials Open
Currently, the need to incorporate recycled materials such as rubber in building products is becoming more important than ever before. The use of waste rubber in mortar/concrete mixtures creates landfill avoidance and decreases the depleti…
View article: A brief on high-volume Class F fly ash as cement replacement – A guide for Civil Engineer
A brief on high-volume Class F fly ash as cement replacement – A guide for Civil Engineer Open
Disposal of fly ash (FA) resulting from the combustion of coal-fired electric power stations is one of the major environmental challenges. This challenge continues to increase with increasing the amount of FA and decreasing the capacity of…
View article: A synopsis about the effect of metakaolin on the durability of Portland cement – An overview
A synopsis about the effect of metakaolin on the durability of Portland cement – An overview Open
Metakaolin (MK) produced by suitable thermal treatment of either kaolin or paper sludge. MK can be used to modify some properties of Portland cement (PC) system. Many authors studied the effects blended PC with MK on durability characteris…