### SPECIFIC GRAVITY OF COARSE AGGREGATE AASHTO T 85

Specific Gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. Water, at a temperature of 73.4°F (23°C) has a specific gravity of 1. Specific Gravity is important for several reasons. Some deleterious particles are lighter than the good aggregates.

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Jul 22, 2020 The specific gravity of an aggregate is considered as the measure of strength or quality of the material. Specific gravity is defined as the ratio of weight of a given volume of aggregate to the weight of equal volume of water. Aggregates having low specific gravity are generally weaker than those with aggregates having high specific gravity.

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As per the definition given in the ‘IS: 2386 (Part III) – 1963’, (Indian Standard- Methods of Test for Aggregates for Concrete – Specific Gravity, Density, Voids, Absorption and Bulking), the specific gravity of coarse aggregates is the weight of the aggregates dried to constant weight in an oven at 100°C divided by its absolute volume including the natural voids within the aggregate ...

Get PriceEmail contact### Specific Gravity And Water Absorption Test Of Coarse Aggregate

Specific gravity and Water Absorption Test of Aggregates major important tests to be performed on aggregate. These two parameters or property of aggregate play an important role in the mix design of concrete.As we know that aggregate occupies 70 to 80% volume of concrete, its testing becomes essential before use.

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Specific gravity may be expressed as bulk . specific gravity (G. sb), bulk specific gravity, saturated surface dry (G sb SSD), or apparent . specific gravity (G sa). G sb and absorption are based on aggregate after soaking in water. This procedure is not intended to be used with lightweight aggregates. Terminology . Absorption – the increase ...

Get PriceEmail contact### AGGREGATE BLENDING, ABSORPTION, SPECIFIC GRAVITY

Aggregate Blending, Absorption Specific Gravity 20 Fine Aggregate Specific Gravity Calculations - Example Problem Given A = mass oven dry =489.3 B = mass of pycnometer filled with water = 666.5 C = mass pycnometer, SSD aggregate and water = 982.3 S = mass SSD aggregate = 500.1

Get PriceEmail contact### AASHTO T 85 - Coarse Aggregate Specific Gravity - YouTube

Apr 27, 2020 This video provides a summary of test method procedures. For more information on this method, including calculations, please visit the CTTP online training ...

Get PriceEmail contact### Specific Gravity of Aggregate Test Equipment - Gilson Co.

Specific Gravity Bench is the best solution for weighing suspended samples in water for specific gravity measurements of aggregates, hardened concrete, bituminous mixtures, and many other materials. Specific Gravity Water Tanks have a 30gal or

Get PriceEmail contact### SPECIFIC GRAVITY AND ABSORPTION OF COARSE

Specific gravity may be expressed as bulk . specific gravity (G. sb), bulk specific gravity, saturated surface dry (G sb SSD), or apparent . specific gravity (G sa). G sb and absorption are based on aggregate after soaking in water. This procedure is not intended to be used with lightweight aggregates. Terminology . Absorption – the increase ...

Get PriceEmail contact### Why Density, Specific Gravity Absorption of Aggregates ...

Aug 31, 2020 Specific Gravity of Aggregates: Bulk Specific Gravity—Calculate the bulk specific gravity, 23°C (73.4°F), as follows: Bulk sp gr = A/(B – C) where: A = weight of oven-dry test sample in air, g, B = weight of saturated-surface-dry test sample in

Get PriceEmail contact### To Determine Specific Gravity of Coarse Aggregate ...

To Determine Specific Gravity of Coarse Aggregate – Concrete Practical Coarse aggregates are particles greater than 4.75mm, but generally range between 9.5mm to 37.5mm in diameter. They can either be from Primary, Secondary or Recycled sources.

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Mar 09, 2017 Aggregate specific gravity is needed to determine weight-to-volume relationships and to calculate various volume-related quantities such as voids in mineral aggregate (VMA), and voids filled by asphalt (VFA). Absorption can be used as an indicator of aggregate durability as well as the volume of asphalt binder it is likely to absorb.

Get PriceEmail contact### (DOC) Experiment No. 6 Determination of Specific Gravity ...

EXPERIMENT NO. 6 SPECIFIC GRAVITY OF COARSE AGGREGATE 6.6.7 Dry the test sample to constant weight at a temperature of 110 ± 5°C (230 ± 9°F), cool in air at room temperature 1 to 3 h, or until the aggregate has cooled to a temperature that is comfortable to handle (approximately 50°C), and weigh. Calculations Symbols:Here: A= weight of ...

Get PriceEmail contact### COARSE AGGREGATE SPECIFIC GRAVITY WORKSHEET

COARSE AGGREGATE SPECIFIC GRAVITY WORKSHEET. North Dakota Department of Transportation, Materials and Research. SFN 10081 (6-2019) Pit Location Laboratory Number Owner Project Number Sampled From PCN Submitted By Date Received. Weight of oven dry sample in air. grams (A) grams (B) Weight of saturated sample in water. grams (C)

Get PriceEmail contact### Specific Gravity of a Blended Aggregate - Memphis

Specific Gravity (Relative Density) of a Blended Aggregate The specific gravity of a blended aggregate is not simply the weighted average of the specific gravities of the individual components. To derive an appropriate equation, let’s assume a blend of two aggregates (A and B).

Get PriceEmail contact### PROPERTIES OF AGGREGATES FOR CONCRETE - Civil Engineering ...

Low specific gravity Aggregates are generally weaker than those with high specific gravity. Low specific gravity generally indicates porous, weak and absorptive aggregate. This property helps to the identification of good and suitable aggregates. Specific gravities of aggregate vary between 2.0 and 3.0. Specific gravities are primarily of two ...

Get PriceEmail contact### Specific Gravity of Aggregate Test Equipment - Gilson Co.

Specific Gravity Bench is the best solution for weighing suspended samples in water for specific gravity measurements of aggregates, hardened concrete, bituminous mixtures, and many other materials. Specific Gravity Water Tanks have a 30gal or

Get PriceEmail contact### Fine Aggregate Specific Gravity - Pavement Interactive

The fine aggregate specific gravity test (Figure 1) is used to calculate the specific gravity of a fine aggregate sample by determining the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. It is similar in nature to the coarse aggregate specific gravity test.

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5.2 Relative density is used to calculate the volume occupied by the aggregate in various mixtures containing aggregate, including hydraulic cement concrete, bituminous concrete, and other mixtures that are proportioned or analyzed on an absolute volume basis. Relative density (specific gravity) is also used in the computation of voids in aggregate in Test Method C29/C29M.

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coarse aggregate. The specific gravity may be expressed as bulk oven dry (OD) specific gravity, bulk saturated surface dry (SSD) specific gravity, or apparent specific gravity. The bulk (SSD) specific gravity and absorption are based on aggregate after 15 to 19 hours soaking in water.

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Tank heater for 30 gallon specific gravity tank. Heater only, no pump. Coarse Aggregate Specific Gravity Set . SKU: LA-0520-05 . Coarse Aggregate Specific Gravity Set. Specific Gravity and Absorption Set, Fine Aggregates . SKU: LA-0519 . Specific Gravity and Absorption of Fine Aggregate

Get PriceEmail contact### Specific Gravity of coarse and fine aggregates - CivilArc

Apr 09, 2017 Objective: For assessment of the specific gravity of specified specimen of fine and coarse aggregates. Specific gravity of coarse aggregate Apparatus. An equilibrium or scale of volume of minimum 3 kg, decipherable and precise to 0.5 g and it has to be of such shape and kind that it allows the basket holding the specimen to be discharged from the beam and the measured in the water.

Get PriceEmail contact### SPECIFIC GRAVITY AND ABSORPTION OF COARSE

coarse aggregate. The specific gravity may be expressed as bulk oven dry (OD) specific gravity, bulk saturated surface dry (SSD) specific gravity, or apparent specific gravity. The bulk (SSD) specific gravity and absorption are based on aggregate after 15 to 19 hours soaking in water.

Get PriceEmail contact### T 85 Specific Gravity and Absorption of Coarse Aggregate ...

This procedure covers the determination of specific gravity and absorption of coarse aggregate in accordance with AASHTO T 85-14. Specific gravity may be expressed as bulk specific gravity (G sb), bulk specific gravity, saturated surface dry (G sb SSD), or apparent specific gravity (G sa). G sb and absorption are based on aggregate after ...

Get PriceEmail contact### COMBINED COARSE AND FINE AGGREGATE SPECIFIC

c = Specific Gravity of Coarse Aggregate G f = Specific Gravity of Fine Aggregate G admix = Specific Gravity of Mineral Admixture Type I or II Cement = 3.14 Type IP Cement = 3.00 Hydrated Lime = 2.20 Example: P c = 41 P f = 59 P admix = 1.0% G c = 2.597 G f = 2.626 Type of Mineral Admixture = Hydrated Lime Mineral Admixture Specific Gravity = 2 ...

Get PriceEmail contact### To Determine Specific Gravity of Coarse Aggregate ...

To Determine Specific Gravity of Coarse Aggregate – Concrete Practical Coarse aggregates are particles greater than 4.75mm, but generally range between 9.5mm to 37.5mm in diameter. They can either be from Primary, Secondary or Recycled sources.

Get PriceEmail contact### Specific gravity of Coarse aggregate - SlideShare

Mar 09, 2017 Aggregate specific gravity is needed to determine weight-to-volume relationships and to calculate various volume-related quantities such as voids in mineral aggregate (VMA), and voids filled by asphalt (VFA). Absorption can be used as an indicator of aggregate durability as well as the volume of asphalt binder it is likely to absorb.

Get PriceEmail contact### (DOC) Experiment No. 6 Determination of Specific Gravity ...

EXPERIMENT NO. 6 SPECIFIC GRAVITY OF COARSE AGGREGATE 6.6.7 Dry the test sample to constant weight at a temperature of 110 ± 5°C (230 ± 9°F), cool in air at room temperature 1 to 3 h, or until the aggregate has cooled to a temperature that is comfortable to handle (approximately 50°C), and weigh. Calculations Symbols:Here: A= weight of ...

Get PriceEmail contact### Specific Gravity of a Blended Aggregate - Memphis

Specific Gravity (Relative Density) of a Blended Aggregate The specific gravity of a blended aggregate is not simply the weighted average of the specific gravities of the individual components. To derive an appropriate equation, let’s assume a blend of two aggregates (A and B).

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2-Why Apparent Specific Gravity has highest value compared to the Bulk SSD Specific Gravity and Bulk Specific Gravity? Do you think this would always be the highest one? 3-If you have two different types of coarse aggregates, one has Bulk Specific Gravity of 2.651 and other has 2.802.

Get PriceEmail contact### Specific Gravity of Aggregate Test Equipment - Gilson Co.

Specific Gravity Bench is the best solution for weighing suspended samples in water for specific gravity measurements of aggregates, hardened concrete, bituminous mixtures, and many other materials. Specific Gravity Water Tanks have a 30gal or

Get PriceEmail contact### 5.17.02 THEORETICAL SPECIFIC GRAVITY OF A

This method covers the procedure for calculating the theoretical specific gravity of a mixture of aggregates that have been combined on a weight basis. 2. Procedure. The specific gravity of the individual aggregates shall be determined using KT-6. Calculate the specific gravity of the mixture by use of the following formula. G P G P G P G ...

Get PriceEmail contact### Specific Gravity Frame and Baskets Controls Group

Used with a suitable electronic balance for specific gravity determination of fresh and hardened concrete and aggregates. A purpose built robust frame designed to support the electronic balance. The lower part of the frame incorporates a moving platform, which carries the water container allowing the test specimens to be weighted in both air ...

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Specific Gravity . 3.15 . Fine aggregate: ... By use of recycle co arse aggregate in concrete reduce the co st of project and prevent the environment .

Get PriceEmail contact### Specific Gravity of Aggregate

Specific Gravity is defined as the ratio of Weight of Aggregate to the Weight of equal Volume of water. The specific gravity of an aggregate is considered to be a measure of strength or quality of the material. Aggregates having low specific gravity are generally weaker than those with high specific gravity.

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3-3 The following chart illustrates these relationships for some common substances. Typical Values Substance Specific Gravity Density (lb/ft3) Water 1.0 (73.4 °F) 62.4 lb/ft3 (73.4 °F) Limestone 2.6 165 to 170 lb/ft3 Lead 11.0 680 to 690 lb/ft3 The density and the specific gravity of an aggregate

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