The present study focuses on the preparation of Zinc selenide (ZnSe) doped Carboxymethyl cellulose (CMC) for utilization in various optoelectronic applications. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM) were employed to analyze structural morphological characteristics. XRD results indicated an amorphous nature CMC, which transitioned a polycrystalline structure upon addition high loading (8 wt.%) ZnSe...

Sustainability and reducing environmental damage caused by CO2 emissions have become issues of interest to researchers in the construction sector around world. Reducing cement content concrete partially substituting it with by-products or waste falls within this field as industry is responsible for 7% global emissions. On other hand, self-compacting (SCC) one special types that contains a large amount powder (most which cement) ensure its flow under influence weight without separating...

Concrete is a brittle material, so it reinforced with fibers (such as steel, glass and nylon fibers) to improve its ductility. On the other hand, use of resulting from waste an interesting issue avoid negative impact these wastes on environment well converting them useless valuable materials. Limited studies addressed mechanical structural performance locally produced rope (WRF) their reuse in concrete. As result, goal this research see how different percentages WRF (0%, 0.25%, 0.5% 1% by...

The reactive powder concrete (RPC) is one of the special types that characteristics with high cement content which means production cost and CO2 emissions to atmosphere. Therefore, enhance environment as well develop green RPC, alternatives cement, such supplementary cementitious materials (SCMs) were used. Limited studies addressed use a volume fraction SCMs binary combination in RPC. Thus, this study aims replace percentage (50%) combinations silica fume (SF), type F fly ash (FA)...

This paper aims to investigate the influence of Silica fume proportion ratio in respect total amount binder on compressive strength reactive powder concrete cured two curing systems. Four ratios (0%, 15%, 25% and 35%) as replacement cement weight were considered. After de-molding, systems used: first included immersing cubic specimens water at 24 ± 2°C until test. In second, immersed hot 105 5°C (accelerated curing) for 48 hours, then The results show that mix which contains imparts more...

This study aims to investigate the effect of ternary combination silica fume, and glass ceramic waste as a partial replacement cement on selected properties mortar in presence steel-polypropylene hybrid fibers. Thirteen mixtures have been made: one control mix twelve mixes which has replaced by constant proportion (30% weight) waste. The steel fibers added 1% while polypropylene applied percentages 0.25%, 0.5% (by volume for both types). flow rate, compressive flexure strength bulk density...

The fast growth in the construction sector has made concrete one of most essential materials world. Concrete industry consumes massive amounts raw materials, such as fine and coarse aggregate. Nowadays increasing amount waste causes environmental problems. Certainly, sustainable solution is to adopt these reuse them again order save natural resources decrease their consumption. This study aims investigate potential use different ceramic, clay bricks, marble, glass, granite, porcelain, wastes...

Environmental pollution and the relatively high cost of waste disposal has been a major focus for scientists around world, leading researchers to find solution reuse materials in different applications. Iraqi people consume hundreds tons black tea each year, which produce large quantity used tea, leaves as waste. These quantities go landfills without any benefit or recycling. Additionally, are considered one biggest crisis facing government. Therefore, this study aims recycle ash (BTWA) by...

The present study involved assessing the replacement of fine aggregate in mortar with sustainable local materials like clay bricks and glass included 168 specimens (cubes prisms). Seven mixtures were cast for this work, one control mix (R1) 100% natural sand whereas mixes from R2 to R5 have 10% 20% replacing waste separately respectively. Mix R6 was combination (10% glass). R7 has same percent previous but adding Polypropylene fibers 1% by volume. samples put an electrical oven hour at 200,...

Abstract Reactive powder concrete (RPC) is one of the distinctive kinds whose benefits are high mechanical performance and durability. It contains a content cement, which means amount carbon dioxide emitted during manufacturing. Scientists have tended to search for way reduce environmental damage, solution partially replace cement with mineral admixtures, waste from other industries, or by-products. There restricted studies involving use compounding admixtures in making RPC. Therefore, this...

Abstract Using recycling materials to produce concrete become a major subject for research in the last decades. The work aims examine effects of partial replacement fine aggregate by recycled rubber. In addition studying influence two different fiber types on mechanical properties with rubber replacement. Three rubbers that differ particle size are used find effect compressive strength, splitting tensile and flexure strength mix. Two waste which Rope Waste Fiber (RWF) Steel (SWF). findings...

The main objective of this study is to assess the effect utilizing waste material (lightweight concrete blocks) as partial replacing fine aggregate. To do so, seven mix designs were utilized prepare 168 mortar specimens (84 cubes and 84 prism) with replacement ratios 10% 20% aggregate instead traditional sand at different temperatures 24 ᵒC, 200 400 600 ᵒC. combination two type together in one mixture (waste lightweight blocks clay bricks or glass) was tested without fiber (1% polypropylene...

Challenges posed by industrial solid waste, particularly Electrical Cable Waste (ECW), have been increasingly recognized due to their environmental implications and substantial decomposition timelines.ECW, a byproduct of aggressive demolition reconstruction in Iraq, has seen limited investigation regarding its potential use as an aggregate substitute fiber additive concrete applications.This study endeavors repurpose ECW partial replacement for natural sand reinforcement, with focus on both...

Polyvinyl alcohol polymer is a harmless substance of great importance to the medical and optical fields. In this paper, we saturated PVA with Al2O3 nanoparticles different weights 0, 0.01, 0.03 0.05% at temperature 25oC 1 atm pressure, The constants had been characterized by measuring transmittance in visible spectrum, ultraviolet field, absorption, rest properties such as damping refraction coefficient, addition real imaginary part dielectric constant finally conductivity samples. We...

Urbanization has led to the damage of infrastructure due floods and water accumulation on roads sidewalks. To address this problem, pervious concrete was designed drain smoothly. However, certain drawbacks, such as brittleness poor tensile strength. overcome these shortcomings, it is reinforced with fiber. Polypropylene fibers are commonly used for purpose. On other hand, managing waste plastic a major problem significant environmental impact requires large areas landfills. Waste rope (WRF)...

Thin films from methylene blue dye dopant with silicon oxide nanoparticles (semiconducting) percentages (0, 0.01, 0.03 and 0.05%) a thickness of 0.001 nm, had been prepared in this research. The effect impurities on the optical properties (absorption, absorbance coefficient, transmittance, energy band-gap for forbidden permissible electronic transitions, refractive index, extinction dielectric constant its real imaginary particles, photoconductivity) was investigated by Spectrophotometer...

Abstract In this paper, films of the ( PMMA-PS ) Mixture doped with Fe 2 O 3 nanoparticles were prepared variable percentage (0,2,4,6)% wt by Drop casting method and at room temperature. The change in optical structural properties was observed after deformation using a UV-Spectrophotometer for range wavelengths (190 - 1100) nm. study showed that increasing distortion ratio led to an increase absorbance, absorption coefficient, extinction refractive index, real dielectric constant, imaginary...

This studding is deduced a mathematical model determined the number of total internal reflection angles occur in optical fiber depend on many parameters (optical length, diameter core, angle).The direct proportionality with length while indirect core and tan function for angle.The useful at design less attenuation.

Solar air heaters (SAHs) are used in a wide variety of household and industrial applications. Smooth absorber plate traditional solar duct has low value convective heat transfer coefficient. Enhancing the thermal efficiency SAHs can be achieved by using artificial roughness ribs placed on plate. However, this use results increasing pressure loss due to friction between airflow roughened surface. This paper presents summarized review recent studies that deal with application computational...

Liquid crystals are state of substance possesses characteristics between traditional liquid and crystallization. For instance, perhaps crystal away similar to the crystals. There different types in phase. In this study, used nematic type (5PCH) wavelength (632.8nm) for find temperature effect on optical properties. This study shows direct proportionality absorptance (A), reflectance (R) , absorption coefficient (a), extinction (k), from one side indirect with transmittance(T).