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.

1 SPECIFIC GRAVITY AND ABSORPTION OF FINE AGGREGATES AASHTO T 84 GLOSSARY Absorption: The increase in mass due to water in the pores of the material. Bulk Specific Gravity (also known as Bulk Dry Specific Gravity): The ratio of the weight in air of a unit volume of aggregate at a stated temperature to the weight in air of an equal volume

Specific Gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. It is the measure of strength or quality of the specific material. Aggregates having low specific gravity are generally weaker than those with higher specific gravity values.

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.

Absolute Specific Gravity = (Weight of oven-dried aggregate at 100°c for 24 hours) / (Weight of water's volume equal to that of aggregate's solids excluding pores) Essential Points Most of the aggregates possess a relative density within 2.4 – 2.9 with a similar particle density about …

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 air, g, …

1.2 This method determines (after 15 h in water) the bulk specific gravity and the apparent specific gravity, the bulk specific gravity on the basis of weight of saturated surface-dry aggregate, and the absorption as defined in AASHTO M 132. 1.3 The values stated i n …

Mass of moist aggregate sample as brought to the laboratory: 5,298 grams. Mass of oven dried aggregate: 5,216 g. Mass of aggregates submerged in water: 3,295 g. Mass of SSD (Saturated Surface Dry) Aggregate: 5,227 g. Find. a. The aggregate bulk dry specific gravity. b. The aggregate apparent specific gravity. c.

displaced by the aggregate in a saturated, surface-dry condition. 2.2 Bulk Specific Gravity—Bulk specific gravity is the ratio of the oven-dry weight of the aggregate to the bulk volume of the aggregate particles. 3. APPARATUS 3.1 Balance, Class G2, in accordance with Tex-901-K, with a minimum capacity of 10,000 g.

Jan 11, 2017· Weight of oven dry aggregate = W 4 g (1) Specific gravity = W 3 ... The specific gravity of aggregates usually applied in construction of roads varies from about 2.5 to 3.0 with a standard of about 2.68. Although high specific gravity is normally taken as a signal of high strength and quality, it is not wise to determine the appropriateness of ...

Relative density (specific gravity) (SSD) is used in the determination of surface moisture on fine aggregate by displacement of water in Test Method C70. Relative density (specific gravity) (SSD) is used if the aggregate is in a saturated surface-dry condition, that is, if its absorption has been satisfied.

May 01, 2007· Aggregate Bulk (Dry) Specific Gravity (Gsb) of Reclaimed Asphalt Pavement (RAP) and Reclaimed Asphalt Shingles (RAS) Appendix B.21 Effective: May 1, 2007 Revised: April 12, 2017 April 12, 2017 Manual of Test Procedures for Materials Page B.101 Appendix B.21 A. Natural Aggregate …

M 2 is mass of bottle and dry soil in gram; M 3 is mass of bottle, soil and liquid in gram; M 3 is mass of bottle when full of liquid only in gram; Note: The specific gravity of the soil particles lie with in the range of 2.65 to 2.85. Soils containing organic matter and porous particles may have specific gravity …

Issue Date: 2/14/2019 The Ohio Department of Transpotation 2019 Specific Gravity Report Producer Supplier Name PS Code Aggregate Size Bulk Dry SSD Absorption CENTRAL‐ALLIED ENTERPRISES‐CANTON AGGREGATE 4307A‐01 57 2.578 2.621 1.69 SD5 2.644 2.670 0.96 CLARK CLAY ‐ NEWCOMERSTOWN 04438‐01 08 2.522 2.570 1.92

Weight of saturated aggregates in air: W3 g 4 Weight of oven dry aggregates in air: W4 g 5 Apparent Specific Gravity: W4 / [W4 – (W1 - W2 )] 6 Bulk Specific Gravity: W4 / [W3 – (W1 - W2 )] Table 1 : Observation Table for Specific gravity of Aggregate coarser than 6.3 mm S. No. Description Observed values 1 Weight of Pycnometer in air: W1 g 2

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

Specific Gravity (Relative Density) Calculations The following values are recorded as part of ASTM C127: A = mass of oven‐dry test sample in air, g B = of saturated‐surface‐dry test sample in air, g C = apparent mass of saturated test sample in water, g

May 01, 2007· Aggregate Bulk (Dry) Specific Gravity (Gsb) of Reclaimed Asphalt Pavement (RAP) and Reclaimed Asphalt Shingles (RAS) Appendix B.21 Effective: May 1, 2007 Revised: April 12, 2017 April 12, 2017 Manual of Test Procedures for Materials Page B.101 Appendix B.21 A. Natural Aggregate …

In this video we discuss in detail about the difference among apparent, bulk & effective specific gravity of aggregate.

Jan 11, 2017· Weight of oven dry aggregate = W 4 g (1) Specific gravity = W 3 ... The specific gravity of aggregates usually applied in construction of roads varies from about 2.5 to 3.0 with a standard of about 2.68. Although high specific gravity is normally taken as a signal of high strength and quality, it is not wise to determine the appropriateness of ...

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.

Apparent Specific Gravity of Aggregates: It is calculated by measuring the weight of the oven-dry aggregate divided by its absolute volume excluding the natural voids in the aggregate particles. It is the realistic quantified data validated to use for the calculation of concrete mix proportioning.

M 2 is mass of bottle and dry soil in gram; M 3 is mass of bottle, soil and liquid in gram; M 3 is mass of bottle when full of liquid only in gram; Note: The specific gravity of the soil particles lie with in the range of 2.65 to 2.85. Soils containing organic matter and porous particles may have specific gravity …

1 SPECIFIC GRAVITY OF COARSE AGGREGATE AASHTO T 85 GLOSSARY Absorption: The increase in weight due to water contained in the pores of the material. Bulk Specific Gravity (also known as Bulk Dry Specific Gravity): The ratio of the weight in air of a unit volume of aggregate at a stated temperature to the weight in air of an equal volume

This procedure covers the determination of specific gravity and absorption of coarse aggregate in accordance with AASHTO T 85-10. Specific gravity may be expressed as bulk specific gravity (Gsb), bulk specific gravity, saturated surface dry (Gsb SSD), or apparent specific gravity (Gsa).

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).

SATURATED SURFACE-DRY SPECIFIC GRAVITY AND ABSORPTION OF AGGREGATES TXDOT DESIGNATION: TEX-403-A CONSTRUCTION DIVISION 2 – 8 LAST REVIEWED: SEPTEMBER 2014 4.3 Sample container, wire basket of 3.35 mm (No. 6) or finer mesh, or a bucket of approximately equal breadth and height, with a capacity of 4–7 L (1–1-3/4 gal.) for 38 mm (1-1/2 in.) nominal maximum …