Specific Gravity and Absorption of Coarse Aggregate T 85 WSDOT Materials Manual M 46-01.29 Page 5 of 6 January 2018 Performance Exam Checklist FOP for AASHTO T 85 Specific Gravity and Absorption of Coarse Aggregate Participant Name Exam Date Record the symbols "P" for passing or "F" for failing on each step of the checklist.
specific gravity of dry aggregate Bulk specific gravity is also used in the computation of voids in aggregate in AASHTO T 19 and the determination of moisture in aggregate by displacement in water in AASHTO T 142. Bulk specific gravity determined on the saturated surface-dry basis is used if the aggregate is wet, that is, if its absorption has been satisfied.
specific gravity of dry aggregate Aggregate Blending, Absorption & Specific Gravity 37 Batching M per sieve = %Ret * %Agg * M batch M per sieve = Mass of one aggregate in the blend for one sieve size %Ret = Percent retained on the sieve expressed in decimal form %Agg = The percent of the stock pile to being used in the blend in decimal form EXAMPLE:
The specific gravity may be expressed as bulk specific gravity (OD), bulk specific gravity (SSD) (saturated-surface-dry), or apparent specific gravity. The bulk specific gravity (SSD) and absorption are based on aggregate after 24 h soaking in water.
The specific gravity of all other materials are compared to water as a fraction heavier or fraction lighter density, no matter how small or large the fraction is. For example, ammonium nitrate has a specific gravity (sg) of 0.73 while dry ammonium sulphate has a sg of 1.13 (1130 kilograms/cubic meter).
Specific gravity of coarse aggregates is measured at the bulk dry, saturated-surface dry and apparent conditions. The Gsb (dry) is the specific gravity when water is considered to have penetrated all the effective voids in the coarse aggregate while the apparent specific gravity (Gsa) determines the specific gravity without factoring any
TS-1c B-11 AASHTO X2. INTERRELATIONSHIPS BETWEEN SPECIFIC GRAVITIES AND ABSORPTION AS DEFINED IN T 84 AND T 85 X2.1. Let: Sd = bulk specific gravity (dry basis), Ss = bulk specific gravity (SSD basis), Sa = apparent specific gravity, and A = absorption in percent.
The relative density (specific gravity) of an aggregate is the ratio of its mass to the mass of an equal volume of water. Relative Density = Mass of the Aggregate / Mass of equal volume of water. Key Features: Most aggregates have a relative density between 2.4-2.9 with corresponding particle (mass) density of 2400-2900 kg/m 3 (150-181 lb/ft 3).
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 Test Method 211, the coarse aggregate specific gravity and absorption shall be performed on Plus No. 8 Material. "Coarse
Sep 03, 2013· Specific Gravity & Water Absorption of Fine Aggregate AASHTO T84 C128 Specific Gravity Fine Aggregate Duration: 12 Determination of Dry Density of Soil by Sand Replacement Method: NCTEL
specific gravity of dry aggregate The coarse aggregate specific gravity test (Figure 1) is used to calculate the specific gravity of a coarse 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 fine aggregate specific gravity test.
Aggregates in Concrete Concrete Technology 2 Gravels, Sands, Normal Crushed Stone, Bulk Specific Gravity 2.4 to 2.9, Bulk Density (of Bulk Unit Weight) 1520 to 1680 kg/m3 (95 to 105 pcf), Most commonly used Saturated-surface dry condition (SSD): Aggregates are:Mark Alexander · Sidney Mindess:Polymer concrete
2.2 Saturated surface-drythe condition of the aggregate when all permeable pores of each particle are completely saturated with water and its surface has no free moisture. 2.3 Saturated surface-dry specific gravitythe ratio of the mass of SSD aggregate to the mass of an equal volume of water.
specific gravity of dry aggregate 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.
specific gravity of dry aggregate 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.
The specific gravity of all other materials are compared to water as a fraction heavier or lighter density. For example, ammonium nitrate has a specific gravity (sg) of 0.73 while dry ammonium sulphate has a sg of 1.13 (1130 kilograms/cubic metre) (see table below) As specific gravity is just a comparison, it can be applied across any units.
specific gravity of dry aggregate Method of Test for Specific Gravity and Absorption of Fine Aggregate 1. Scope: Weigh the dry aggregate to the nearest 0.1 gram. In lieu of drying the material from the flask, a second 500.0 gram of surface dry sample may be A. Bulk specific gravity (Saturated surface-dry basis). Calculate the bulk specific gravity, 73.4°/73.4°F, on
specific gravity of dry aggregate OVEN DRIED SPECIFIC GRAVITY. It is the ratio of the oven dried density of the aggregate to the density of the gas free distilled water at a standard temperature (i.e. 4 o C). SATURATED SURFACE DRY SPECIFIC GRAVITY It is the ratio of the saturated surface dry density of the aggregate to the density of the gas free distilled water at a standard temperature (i.e. 4 o C).
The specific gravity of an aggregate is defined be a measure of strength or quality of the material. Stones having low specific gravity are generally weaker than those with the high. The percent of water necessary to add to the aggregate to obtain SSD is called as water absorption.
specific gravity of dry aggregate The apparent specific gravity is defined as the ratio of the mass of the particles to the mass of a volume of water equal to the net volume of the particles, so the apparent specific gravity can be calculated as: app wnet AA G VAC which is the formula given in the ASTM specification.
NDDOT specifies the aggregate is in. a surface dry condition and 25% to 75% of the top diameter of the surface. slumps when the mold is removed. AASHTO specifies the sample in the pycnometer may be immersed in circulating. water to adjust its temperature to 73.4°±3°F (23±1.7°C).
specific gravity of dry aggregate 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
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.
Saturated Surface Dry (SSD) condition of an aggregate particle when the permeable voids are filled with water, but no water is present on exposed surfaces. Specific Gravity the ratio of the mass, in air, of a volume of a material to the mass of
Aggregate Bulk (Dry) Specific Gravity (Gsb) of Reclaimed Asphalt Pavement (RAP) and Reclaimed Asphalt Shingles (RAS) Appendix B.21 (continued) Effective: May 1, 2007 Revised: April 12, 2017 April 12, 2017 Manual of Test Procedures for Materials Page B.107 Appendix B.21