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A detailed procedure of mix design for fly ash based

Cement Cement was used to prepare normal concrete for the comparison with fly ash based geopolymer concrete ASTM C188 was followed to measure the specific gravity Fly Ash Fly ash was obtained from the Boral Company Australia and used in this research as the main constituent of the binding materials in geopolymer concrete Get price

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How Fly Ash is Hazardous

Fly ash produced thus possesses both ceramic and pozzolanic properties Is fly ash hazardous? The physical geotechnical and chemical parameters to characterize fly ash are the same as those for natural soils e g specific gravity grain size compaction characteristics permeability coefficient shear strength Get price

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Coal Fly Ash

The specific gravity of fly ash usually ranges from 2 1 to 3 0 while its specific surface area (measured by the Blaine air permeability method) (6) may range from 170 to 1000 m 2 /kg The color of fly ash can vary from tan to gray to black depending on the amount of unburned carbon in the ash Get price

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Class F Fly Ash

The time of set may be slightly delayed and the early compressive strengths (before 28 days) may be decreased slightly Also the fine aggregate fraction of the concrete will need to be modified because fly ash has a lower bulk specific gravity than does portland cement and therefore occupies a greater volume for an equal mass Get price

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Coal Ash Characteristics Management and Environmental

Elements such as arsenic and selenium that be come volatile at high temperatures preferentially condense on the surface of the ash particles as the flue gas cools Fly ash particles are typically spherical in shape either solid or with vesicles (Figure 2) Get price

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Dr Vimal Kumar Scientist 'G' Head Fly Ash Unit (FAU

FLY ASH Vs SOIL Parameters Fly Ash Natural Soil Bulk Density (gm/cc) 0 9-1 3 1 3-1 8 Specific Gravity 1 6-2 6 2 55-2 75 Plasticity Lower or non-plastic Could be much higher Shrinkage Limit (Vol stability) Higher Could be much lower Grain size Major fine sand / silt and small per cent of clay size particles Sand/silt/clay size particlesGet price

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(PDF) Pysical Chemical Mineralogical Properties of Fly

Pysical Chemical Mineralogical Properties of Fly-ash Fly ash particles are generally spherical in shape and range in size from 2 μm to 10 μm They consist mostly of silicon dioxide (SiO 2) aluminium oxide (Al 2 O 3) and iron oxide (Fe 2 O 3) Fly ash like soil contains trace concentrations of the following heavy metals nickel vanadium cadmium barium chromium copper molybdenum zinc and lead Get price

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Bulk Density Table

Soda ash heavy 55 65 Soda ash light 20 35 Sodium aluminate ground 72 Sodium aluminum fluoride (see kryolite) Sodium aluminum sulfate 75 Ingredient Bulk Density (lb/cu ft ) Loose Packed Sodium bentonite (see bentonite) Sodium bicarbonate (see baking soda) Sodium chloride (see salt) Sodium carbonate (see soda ash) Sodium hydrate (see caustic soda)Get price

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Effect of Moisture Content of Wet Fly Ash on Basic

Basic properties of fly ash Specific gravity of OPC dry fly ash and wet fly ashes is shown in Table 1 The specific gravity of the wet fly ash is similar to the originally dry fly ash The specific gravity of the wet fly ash is unaffected by moisture contents Get price

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Class C Fly Ash

When using Class C fly ash as a portland cement replacement it is important to know several precautions The time of set may be slightly delayed Also the fine aggregate fraction of the concrete will need to be modified because fly ash has a lower bulk specific gravity than does portland cement and therefore occupies more volume for the same mass Get price

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Peat Stabilization using Gypsum and Fly Ash

specific gravity indicates a higher degree of decomposition and low mineral content An approximate and easier method of determining specific gravity is to use ash content or organic content The ash content is an indication of the organic content in the peat The unit weight is influenced by the water content and organic content of the peat Get price

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A detailed procedure of mix design for fly ash based

volume of the fly ash content was 340 kg/m3 compared with other volumes with the same alkaline liquid-to-fly ash ratio This indicates that more fly ash content in the mix did not lead to the concrete having more strength Let the mean compressive strength at 28 days is targeted as 45 MPa The necessary data for the design is given in Table 2 Table 2 Get price

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A New Fly Ash Separator Combining Magnetic Forces with

specific gravities of 2 20 or less The most magnetic fractions of fly ash contain some of the densest material (i e magnetite at greater than 3 9 g/cc) When it is removed the specific gravity of the remainder of the fly ash is significantly reduced The specific gravities of the B 3Get price

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Fly Ash

2 Specific Gravity of Fly Ash The specific gravity of fly ash ranges from a low value of 1 90 for a sub-bituminous ash to a high value of 2 96 for an iron-rich bituminous ash 3 Size and Shape of Fly Ash As the flyash is a very fine material the particle size ranges in between 10 to 100 micron Get price

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Fly ash

The minor constituents of fly ash depend upon the specific coal bed composition but may include one or more of the following elements or compounds found in trace concentrations (up to hundreds ppm) arsenic beryllium boron cadmium chromium hexavalent chromium cobalt lead manganese mercury molybdenum selenium strontium thallium and vanadium along with very small concentrations of Get price

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Center for By

Specific gravity tests (ASTM C 188) showed an average specific gravity value of 2 45 (varied between 2 32 to 2 76) for wood fly ash which is similar to a typical coal fly ash Specific gravity tests (ASTM C 128) for wood bottom ash showed an average specific gravity value of 1 70 (varied between 1 65 to 1 75) Get price

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Compressive Strength of Fly Ash Brick with Addition of

cementious properties Fly ash used is of type class C with a specific gravity of 2 19 Lime Lime is an important binding material in building construction It is basically Calcium oxide (CaO) in natural association with magnesium oxide (MgO) Lime reacts with fly ash at ordinary temperature and forms a compound possessing cementitious properties Get price

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What is bulk density of cement aggregate sand?

Mar 15 2016The relative density or specific gravity is the weight of the material particles themselves and for cement this density is typically 3 11 When used in concrete the space around the cement particles is taken up by water so there is no air around the particles and the bulk density is not important Get price

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Specific Gravity Of Bituminous Coal

Chapter 4 properties of materials 41 fly ash 2018724134 specific gravity of fly ash the specific gravity of different fly ashes varies over a wide range the specific gravity ranged from a low value of 190 for a subbituminous ash to a high value of 296 for an ironrich bituminous Read the rest Get price

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CHARACTERIZATION OF FLY ASH FOR THEIR EFFECTIVE

True density of fly ash is the weight per unit volume of very finely powdered sample Therefore the volume of pores spaces and the interspaces is not included here To determine the true density fly ash sample is dispersed in water The amount of water dispersed per gram of fly ash gives the true density of fly ash Get price

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Density of Various Wood Species

Densities of wood species like apple ash cedar elm and more Moisture content should be lower than 20% to stop fungal attack Seasoning is the name of the process where moisture content is reduced to the appropriate level for proposed use Shrinkage will occurs as a result of the moisture loss - typical 3-4% across the grain Get price

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Disposal and Utilization of Fly Ash to Protect the Environment

Specific gravity 1 66-2 55 Grain size distribution Sandy silt to silty loam Porosity 45%-55% Water holding capacity 45%-60% Electrical conductivity (dS/m) 0 15-0 45 B Wet Fly Ash Disposal System In wet disposal system the Fly Ash is mixed with water and transported as slurry through pipe Get price

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what is the specific gravity of concrete?

May 14 2010Best Answer Vishal The weight of a batch of concrete varies with its composition but a typical concrete mix about 145 pounds per cubic foot (pcf) Specific gravity is the ratio of the weight of a cubic foot of a material to the weight of a cubic foot of water which is 62 4 pcf Get price

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A study on characterization and use of Pond Ash as fine

In wet method fly ash collected from ESP's and the bottom ash are with water and transported in a slurry form to this ponds Fly ash and pond ash Pond ash differ from fly ash collected from ESP's in a dry form in that it cont ains significant amount of relatively coarse particles (greater than 45 m and upto 50 m) Get price

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Dr Vimal Kumar Scientist 'G' Head Fly Ash Unit (FAU

PROPERTIES OF FLY ASH AND SOIL Parameter Range Fly ash Soil Specific Gravity 1 6-2 6 2 55-2 75 Plasticity (per cent) Lower or Non-Plastic could be higher Maximum Dry Density (gm/cc) 0 9-1 3 1 3-1 8 Optimum Moisture Content (per cent) 18 0-38 0 12-18 Cohesion (kN/m2) Negligible 20-150 Angle of Internal Friction(degrees) 30-40 25-35 Coeff Get price

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Standard Test Methods for Sampling and Testing Fly Ash or

1 1 These test methods cover procedures for sampling and testing fly ash and raw or calcined pozzolans for use in portland-cement concrete 1 2 The procedures appear in the following order 1 3 The values stated in either SI units or inch-pound units are to be regarded separately as standard Get price

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Mix Design With Superplasticizers

Specific Gravity 3 15 MIX-C With OPC of Mix-B and Fly ash conforming to IS 3812 (Part-I)-2003 Specific Gravity 2 25 Note Requirements of all the three mixes are the same Fine Aggregate Coarse Aggregate and normal Super plasticizer are the same for all the three mixes 3 Fly ash replacement Get price

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USER GUIDELINE FOR COAL BOTTOM ASH and BOILER

The specific gravity of the dry bottom ash is a function of chemical composition with higher carbon content resulting in lower specific gravity Bottom ash with a low specific gravity has a porous or vesicular texture a characteristic popcorn particle that readily degrade under Get price

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Concrete Mix Design with Fly Ash and Superplasticizer

Fly ash concrete of above strength and workability About 3/4 th quantity of the mixing water be taken in the concrete mixer Weighted amount of the required quantity of fly ash then added to it and mixed for 30 sec To the slurry of fly ash so obtained weighted quantities of coarse aggregate fine aggregate Get price

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USER GUIDELINE FOR COAL BOTTOM ASH and BOILER

USER GUIDELINE FOR COAL BOTTOM ASH and BOILER SLAG IN GREEN INFRASTRUCTURE CONSTRUCTION by Principal Investigators Craig H Benson and Sabrina Bradshaw The specific gravity of the dry bottom ash is a function of chemical composition with higher control sections as well as those collected from fly ash test sections (Edil et al 2006) TheGet price

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Geotechnical Properties of Fly Ash and Soil Mixtures for

from the fly ash/soil mixtures ranged between 900 kN/m2 and 9300 kN/m2 whereas the soil alone had a q u of 1 to 200 kN/m 2 The effect of mixing ratio and compaction water content on the geotechnical properties of fly ash/soil mixtures was discussed INTRODUCTION According to the American Coal Ash Association in 2007 the United States producedGet price

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Is fly ash hazardous?

The physical geotechnical and chemical parameters to characterize fly ash are the same as those for natural soils e g specific gravity grain size Atterberg limits compaction characteristics permeability coefficient shear strength parameters and consolidation parameters Get price

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Specific Gravity

In my experience specific gravity is without a doubt the single most abused and vaguely used term in woodworking terminology Technically specific gravity is a measure of the ratio of a wood's density as compared to water (So if a wood is of the same density as water the specific gravity would be 1 00 )Get price

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Fundamentals of Concrete

After mixing the unit weight is measured to be 145 7 lb/cu ft The yield is determined as follows yield = total weight / unit weight = 3956 lb = 27 15 cu ft 145 7 lb/cu ft When working with inch-pound units the design yield is always 27 cubic feet Relative yield is the ratio of yield to the design yield Get price

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