Density, Relative Density (Specific Gravity), and Absorption of Fine aggregate (ASTM C 128) Definitions Absorption, n —the increase in mass of aggregate due to water penetrating into the pores of the particles, during a prescribed period of time but not including water adhering to the outside surface of the particles, expressed as percentage of the dry mass. Oven-dry (OD), the condition in ...
gravity, bulk saturated surface dry (SSD) specific gravity, or apparent specific gravity. 1.2 The specific gravity and absorption of fine aggregate is normally determined on Minus No. 4 Material. When the fine aggregate sample (Minus No. 4) contains a substantial amount of No. 4Minus to Plus No. 8 Material, such as in mineral aggregate for ...
Aug 30, 2021· Specific Gravity/Relative density of Coarse Aggregates- ASTM Standards. Ram Chand August 30, 2021. Specific gravity of an aggregate is defined as the mass of the aggregate in air divided by the mass of an equal volume of water. For example, an aggregate with a specific gravity of 2.50 means, aggregate is two and one-half time heavier than water.
Aggregate Specific Gravity Types 2) Bulk Specific Gravity (Bulk Dry Specific Gravity), G sb The volume measurement includes the overall volume of the aggregate particle as well as the volume of the water permeable voids. The mass measurement only includes the aggregate particle. Ratio of the mass of a unit volume of aggregate at a stated ...
D. Weigh the pre-wetted surface-dry aggregate test sample and record this mass to the nearest 0.1 g (A). E. Measure the mass of an empty pan that will be used to oven-dry the pre-wetted surface-dry aggregate. F. Place the aggregate in the pan and dry the test specimen in an oven at 110 ± …
Sep 19, 2019· 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 …
EXPERIMENT NO. 3 & 4 SPECIFIC GRAVITY (RELATIVE DENSITY) AND WATER ABSORPTION TEST FOR AGGREGATES. RELATED THEORY Water Absorption. Specific Gravity. Specific Gravity is defined as ratio of weight of solid to the weight of an equal volume of gas free distilled water (no dissolved air/impurities) at a stated temperature.
Relative density (specific gravity) is also used in the computation of voids in aggregate in Test Method C29/C29M. 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.
The surface dry aggregates are placed into a wire basket and submerged in the water. The submerged weight is 3073.34 g. Finally, the aggregate is oven dried to a constant weight. The oven dry weight is 4820.0 g. Calculate the apparent specific gravity, bulk specific gravity and absorption in %. Apparent specific gravity (three decimal places ...
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
Sep 22, 2021· Aggregates from three sources having bulk specific gravities of 2.753, 2.649, and 2.689 were blended. Aggregates from three sources having bulk specific gravities of 2.753, 2.649, and 2.689 were blended at a ratio of 70:20:10 by weight, respectively. What is the bulk specific gravity of the aggregate blend?
API gravity
Aggregate Specific Gravity. 2.1.1. Aggregate: Measure the Bulk (Dry) Specific Gravity of the coarse and fine aggregate fractions (KT-6, Procedure I & II). 2.1.2. Reclaimed Material: KT-6, as indicated above can be used on extracted aggregate if a sufficient quantity is available.
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
Recommended Values of Specific Gravity and Water Absorption for Aggregates. The specific gravity of aggregates normally used in road construction ranges from about 2.5 to 3.0 with an average of about 2.68. Water absorption shall not be more than 0.6 per unit by weight. Read more : Specific Gravity of Fine Aggregates.
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.
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
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.
Apparent Specific Gravity, Absorption and Bulk Specific Gravity of Aggregates AggPlus™ Specification ASTM D7370M. Oven dry aggregates are used in this test to determine the specific gravity and absorption of fine or coarse aggregates in less …
ABSORPTION AND DRY BULK SPECIFIC GRAVITY OF LIGHTWEIGHT COARSE AGGREGATE TXDOT DESIGNATION: TEX-433-A CONSTRUCTION DIVISION 2 – 3 EFFECTIVE DATE: AUGUST 1999 3.3 Weigh the oven-dried test sample to the nearest 0.5 g and record as X under Section 4. 3.4 Fill pycnometer with water and weigh to the nearest 0.5 g.
1. objective. 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.
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).
Bulk specific gravity is also used in thecomputation of voids in aggregate inAASHTO T 19 and the determination of moisture in aggregate by displacement in water inAASHTO T 142. Bulk specific gravity determined on the saturated surface-dry basis is used if the …
Apr 26, 2020· Absorption ratio: is the change in the weight that happens to the dry aggregate (dry at 110 °C in the oven) when water is added and fills the pores of the material, but not including water at the outside surface. Part A (Specific Gravity and Absorption for coarse Aggregates)
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 in …
M sand or crush sand is used as partial replacement of fine aggregate in construction and the density of M or crush sand is 1750 kg/m 3, specific gravity and F. M. is found to be 2.73 and 4.66 respectively.
Mar 24, 2020· Bulk specific gravity (Saturated surface dry): "It is the ratio of the saturated surface dry density of the aggregate (including the weight of water within the voids filled to the extent achieved by submerging in water for approximately 24 h but not including the voids between particles) to the density of the gas free distilled water at a ...
Jan 10, 2014· Bulk specific gravity is also used in the computation of voids in aggregate in Test Method C 29. Bulk specific gravity (SSD) is used if the aggregate is wet, that is, if its absorption has been satisfied. Conversely, the bulk specific gravity (oven-dry) is used for computations when the aggregate is dry or assumed to be dry.
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.
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 RAP Gsb
Where: Gsb (OD) = Bulk specific gravity, Oven-Dry basis Vv = Volume of water-permeable and impermeable voids within aggregate particles (cm3) Gsb(SSD)= (Ms+Mw Vs+Vv)γ w (3) Where: Gsb (SSD) = Bulk specific gravity, Saturated Surface-Dry basis Mw = Mass of water absorbed into permeable voids by soaking for prescribed time period
2.1 Object-i This test covers the procedures for determining the specific gravity, apparent specific gravity and water absorption of aggregates. Nor~ 1 -Threl main methods are specified for use according to whc&r he &e of the aggregate is large than 10 mm ( Method I ) between 40 mm