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
Feb 15, 2019· The concrete density is greatly depending on the specific gravity. A porous nature (i.e. those which increase in weight exceeding 10% of dry weight after immersion for 24 hours) should not be permitted, unless specified. The range of specific gravity for aggregates should be between 2.4 and 2.9. Soundness of Aggregate
The volume of coarse aggregate would be Coarse Aggregate = 1674 lb/((2.68 + 0.025) Ã 62.4 pcf) = 9.92 ft3 The volume of fine aggregate would be 27.00 - (4.33 + 3.27 + 1.89 + 9.92) = 7.59 ft3 When the specific gravity of the fine aggregate was changed by the within-lab D2S, the batch weight of fine aggregate would be 7.59 cu. ft Ã (2.64 = 0 ...
For aggregates, density is determined by multiplying the relative density (specific gravity) of the aggregate times the density of water. Bulk Density of Aggregate [1] The bulk density or unit weight of an aggregate is the mass or weight of the aggregate that required to fill a …
44 DEPARTMENT OF CIVIL ENGINEERING EXPERIMENT NO. 6 SPECIFIC GRAVITY OF COARSE AGGREGATE 6.4.3 Apparent specific gravity Definition: The ratio of the weight in air of a unit volume of the impermeable portion of aggregate at a stated temperature to the weight in air of an equal volume of gas-free distilled water at a stated temperature.
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.
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 ...
Specific gravities of our samples came out to be 2.8 which lies in the general range of specific gravity values. Water absorption value of our sample comes out to be 0.361, Value ranges from 0.1 – 2.0% for aggregate normally used in roads surfaces.
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
aggregate. The specific gravity may be expressed as bulk oven dry (O.D.) specific 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 pass No. 4 material.
Mar 24, 2018· Specific gravities can vary widely depending upon aggregate type. Some lightweight shales (not used in HMA production) can have specific gravities near 1.050, while other aggregate can have specific gravities above 3.000. Typically, aggregate used...
Related Topics . Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more ; Related Documents . Concrete Mixtures - Cement, sand and gravel mixtures; Density of Selected Solids - Density of selected solids; Density, Specific Weight and Specific Gravity - An introduction to density, specific gravity and specific weight - formulas ...
The high specific gravity of aggregates contains good quality, and at the same time, low specific gravity aggregates are weak and permeable. Normally the specific gravity value of aggregates lies between 2 to 3 which is used in construction works. The specific gravity value shows the quality and strength of the material. 2. Bulkage of aggregates
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. This method is not intended to be used with lightweight aggregate. 1.2 The specific gravity and absorption of coarse aggregate is normally ...
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).
Bulk specific gravity (SSD) 0.007 0.020 10.3 If the specific gravity and absorption values were Apparent specific gravity 0.007 0.020 Absorption B, % 0.088 0.25 determined without first drying the aggregate, as permitted in Multilaboratory Precision: 8.2, it shall be noted in the report.
Bulk specific gravity (SSD) 0.007 0.020 10.3 If the specific gravity and absorption values were Apparent specific gravity 0.007 0.020 Absorption B, % 0.088 0.25 determined without first drying the aggregate, as permitted in Multilaboratory Precision: 8.2, it shall be noted in the report.
Formulas: (1) Specific gravity = W 3 / (W 3 – (W 1 – W 2)) (2) Apparent specific gravity = W 4 / (W 4 – (W 1 1 – W 2)) (3) Water Absorption = ((W 3 – W 4) / W 4) X 100** The size of the aggregate and whether it has been artificially heated should be indicated. ** Though high specific gravity is considered as an indication of high strength, it is not possible to judge the suitability ...
Mar 24, 2018· Specific gravities can vary widely depending upon aggregate type. Some lightweight shales (not used in HMA production) can have specific gravities near 1.050, while other aggregate can have specific gravities above 3.000. Typically, aggregate used...
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).
Mar 29, 2020· Sand particles composed of quartz have a specific gravity between 2.65 to 2.67.While inorganic clays generally range from 2.70 to 2.80.Soils with large amounts of organic matter or porous particles (such as diatomaceous earth) have specific gravity below 2.60 (Some range as low as 2.00).
The specific gravity of aggregates is the ratio of the density of water to its density. It is used for concrete mix design and if not specified the specific gravity is taken as 2.7 because the specific gravity of most aggregates obtained from different sources falls between 2.6 and 2.8.