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Sep 20, 2021periwinkle shell ash (PSA) as partial replacement for ordinary portland cement (OPC) in concrete. International Journal of Research and Reviews in Applied Sciences, 10, 428-433.
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Sep 20, 2021periwinkle shell ash (PSA) as partial replacement for ordinary portland cement (OPC) in concrete. International Journal of Research and Reviews in Applied Sciences, 10, 428-433.
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Jun 26, 2017CHEMICAL EQUIVALENTS A. Equivalents and equivalent weights The concept of equivalent weights, equivalents, and equivalents per million (epm) is most useful in calculating basic chemical dosages. The equivalent weight of any ion, radical or compound is that weight which will combine with or replace a unit weight of hydrogen. All ions (and compounds) react together
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There may be selective deposition of different shell layers according to the stimulus. For example, shell thickening in the periwinkle Littorina obtusata in response to predation was due to a 91% increase in the irregular prismatic calcite layer in new shell (Brookes Rochette, 2007).
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Chemical Composition of Fly Ash The chemical composition of fly ash depends upon the type of coal used and the methods used for combustion of coal. Table : Chemical composition of fly ash of different coals. Component: Bituminous Coal: Sub bituminous Coal: Lignite Coal: SiO2 (%) 20-60: 40-60: 15-45: Al2O3 (%) 5-35: 20-30: 20-25: Fe2O3
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The periwinkle gravel concrete cubes were tested for its compressive strength. The bulk density of the periwinkle shells open dumps at coastal oyster management areas is studied. For this purpose, the chemical components of oyster shells and reactivity Composition of Sea Shell Composition % of weight CaO 61.44 SiO 2 20.06 Al 2 O 3 5.85
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4.2 The chemical composition of coconut shell and palm kernel shell 60 4.3 Sample identification codes for the pore structure and 61 surface area analysis 4.4 Summary of results showing the pore structure and surface area 77 analysis on activated carbon produced
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The coconut shell is cleaned from the coir using a sandpaper machine. Furthermore, coconut shell made into pieces with the smaller size. Then the coconut shell is dried in the sun for 3 days. 2.4. Active Carbon Fabrication Samples of coconut shell pyrolysis batch for 6 hours at 350 oC using pyrolysis reactor. Pyrolysis
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Using a mix design ratio of 1:2:4 and water binder ratio of 0.63, concrete cubes were casted using varying ordinary Portland cement (OPC): palm kernel shell ash (PKSA) and ordinary Portland cement (OPC): coconut shell ash (CSA) ratios of 100:0, 90:10, 80:20, 70:30, 60:40 and 50:50 respectively.
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The ash content ranged 6.85% for rough periwinkle to 14.02% for whelk. There was no significant difference (P0.05) in the ash content of oyster and that of smooth periwinkle. High ash content of molluscs is an indication that they are rich in micronutrients (minerals).
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Sep 10, 2018Chemical Composition of Fire . Fire is the result of a chemical reaction called combustion.At a certain point in the combustion reaction, called the ignition point, flames are produced.Flames consist primarily of carbon dioxide, water vapor, oxygen, and nitrogen.
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Ash, Ground 105 1682 Ashes, Dry Loose 38 609 Ashes, Wet Loose 47 753 Baking Powder 56 897 Oyster Shell (Ground, - 0.5) 53 849 Peanut Brittle 36 577 Peanut Meal 28 449 Rubber Composition Powder 34 545 Rubber Compound 38 609 Rubber Crumb 22 352 Rubber (Chopped) 48
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1.1 This test method covers the determination of moisture, volatile matter, and ash in charcoal made from wood. The test method is applicable to lumps and briquets and is designed for the evaluation of charcoal quality. The test method employs apparatus that is found in most laboratories and is adapted to routine analyses of a large number of samples.
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The results 10% by weight of periwinkle shell ash (PSA), 15% by show that at first the compressive strength of each of weight of oyster shell ash (OSA), and 20% by weight the mixes is low compared to that of the control mix. of snail shell ash (SSA) in making of mortar cubes This is so, because the pozzolanic activity is
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ash can be produced from commercial rice. Burning rice hulls – as a preparative step for energy production – is a useful solution, but the desirable situation would be a better economic use of the resulting ash. Silica is the predominant component of the ash with trace amount of various elements such as potassium, sodium, magnesium and
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As the worldwide production of palm oil (Elaeis guineensis) is increasing, concomitant wastes of unutilized parts of the oil palm are also increasing. Thus, effective utilization of these wastes is expected. In this paper, therefore, the chemical composition of cellulose, hemicellulose, lignin and other minor cell wall components was studied for six different anatomical parts of the oil palm
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ASTM A48 CLASS 35 CAST IRON. Cast iron ASTM A48 class 35 is equal to HT250, FC250, GG25, G25, FGL250, T260, O125, which is a type of high grade gray cast iron.The followings are its application, physical properties, chemical composition and our opinion. This iron grade is widely used to produce many castings with high tensile strength and hardness, high degree of tightness or corrosion
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CHEMICAL ANALYSIS OF MINERALS There are many diff tdifferent types of bthboth qualit tilitative and quantitative analysis availableto mineralogists and petrologists. Specific techniques are chosen based on the goals of the researcher and the characteristics of the samples being studied. The four most important things to know before beginning any
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The pest control composition according to claim 1, wherein the weight ratio of etoxazole to fenazaquin is from 300:1 to 1:4100. 4. A pest control method, which comprises applying effective amounts of etoxazole and fenazaquin to a pest or an area where a pest lives.
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However, the coconut shell is still under utilized in some places. The chemical composition of the coconut shell is similar to wood. It contains 33.61% cellulose, 36.51% lignin, 29.27% and ash at 0.61%. The aim of this study is to investigate the effect of the use of coconut shell as partial replacement of coarse aggregate in concrete production.
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10. Soda Ash. Limestone is used to produce soda ash (sodium carbonate, Na2CO3). Soda ash serves as an alkali in the chemical industry, with applications in paper, soap and detergent manufacture, tanning, water treatment, and industrial waste treatment. 11. Cosmetics. Limestone is an essential component of many makeup products including fillers.
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Figure 32 Diagram of a 105mm APERS shell. Chemical Shells Chemical shells include smoke shells, teargas shells, and poison gas shells. Typically chemical shells are the same shapes as explosive shells. However, chemical shells tend to have thinner walls. They also, typically, have a central tube containing a bursting charge that is surrounded
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Sep 20, 2021periwinkle shell ash (PSA) as partial replacement for ordinary portland cement (OPC) in concrete. International Journal of Research and Reviews in Applied Sciences, 10, 428-433.
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The oxide composition of the three cementitious materials has been presented pictorially in Figure 1 while this composition is compared with typical or standard OPC in Table 1. 2.5 Water Water is an important constituent of concrete as it contributes to the chemical reaction with cement to form strength giving cement paste.
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periwinkle, clam, oyster and other shells. The objectives of this study were (i) To determine calcium carbonate equivalence of oyster and snail shells. (ii) Evaluate the chemical composition of snail and oyster shells as materials for soils developed on acid sands in Akwa Ibom State and
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In this study, the biomass chemical composition and physical feature of OPEFB was analysed to explore and understand the potential of OPEFB as bioconversion feedstock. National Renewable Energy Laboratory (NREL) standard protocols were used to characterize and determine the chemical composition of OPEFB.
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Bioresou. Technol., 72: 219–226. Oladoja NA Aliu YD 2008. Evaluation of plantain peelings ash extract as coagulant aid in the coagulation of colloidal particles in low pH aqua system. Water Qual. Res. J. Can., 43(2/3): 231-238. Oladoja NA Aliu YD 2009. Snail shell as coagulant aid in
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The first stage of processing includes roasting the , to change the colour and flavour, and shell removal. After roasting and deshelling an alkalising process can take place, to alter flavour and colour. One analysis of the chemical composition of after fermentation and drying is as follows:
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Sep 20, 2021periwinkle shell ash (PSA) as partial replacement for ordinary portland cement (OPC) in concrete. International Journal of Research and Reviews in Applied Sciences, 10, 428-433.
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Dec 13, 2019The shell of the queen conch or pink conch shell ranges in size from about six inches to 12 inches in length. It has between nine and 11 whorls on the protruding spire. In adults, the expanding lip points outward, rather than curving inward, and the last whorl has a strong spiral sculpture on its surface. Very rarely the conch may produce a pearl.
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