specific gravity of dry aggregate

SPECIFIC GRAVITY AND ABSORPTION OF COARSE …

specific gravity (Gsb), bulk specific gravity, saturated surface dry (Gsb SSD), or apparent specific gravity (Gsa). Gsb and absorption are based on aggregate after soaking in water. This ... expressed as a percentage of the dry mass. The aggregate is considered "dry" when it has been maintained at a temperature of 110 ±5°C (230 ±9°F ...

Aggregate Testing for Civil Engineers: Specific Gravity, Bulk

2 Coarse Aggregate Specific Gravity by the Book (ASTM C127) ... Wash sieve analysis Dry aggregate and determine mass Wash and decant water through 0.075 mm sieve until water is clear Dry aggregate to a constant mass Records mass before M B …

CIVL 1101

Aggregates generally occupy 70 to 80% of the volume of concrete and therefore have a significant effect on its properties. Strength of concrete and mix design are independent of the composition of aggregate, but durability may be affected. Aggregates are classified based on specific gravity as heavyweight, normal-weight, and lightweight.

Theoretical Maximum Specific Gravity

The mass is determined by measuring the dry mass of the sample either at the beginning of the test or after it has been dried at the end of the test. ... Typical values for theoretical maximum specific gravity range from …

Specific Gravity and Absorption of Coarse Aggregate

The bulk specific gravity (SSD) and absorption are based on aggregate after 15–19 h of soaking in water. This method is not intended to be used with lightweight aggregates. …

Specific Gravity Calculator

The specific gravity calculator determines the relative density of a substance compared to cold freshwater; very useful for knowing if a material floats or sinks or for estimating the amount of alcohol in your homebrewed beer. Of course, if you are an amateur brewer dedicated to your craft, you may find our ABV calculator useful too.. …

SPECIFIC GRAVITY AND ABSORPTION OF COARSE …

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 (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 ...

Bulk Specific Gravity

There is no specification for bulk specific gravity, but it is used to calculate other specified parameters such as air voids, VMA and VFA. Typical Values. Typical values for bulk specific gravity range from 2.200 to …

Density of Aggregate

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. ... The relative aggregate density can be determined on an oven-dry basis or a saturated surface-dry (SSD) basis. References.

RELATIVE DENSITY AND ABSORPTION OF FINE …

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. Conversely, the bulk specific gravity determined on the oven-dry basis is used for computations when the aggregate is dry or assumed to be dry. 4.2 Apparent specific gravity pertains to the relative ...

SATURATED SURFACE-DRY SPECIFIC GRAVITY AND …

1.1 This method determines the saturated surface-dry (SSD) specific gravity and water absorption of fine aggregates, coarse aggregates, and coarse aggregates greater than 2 …

Aggregate Specific Gravity

Aggregate specific gravity is useful in making weight-volume conversions and in calculating the void content in compacted HMA ... Dry aggregate. Figure 2. Wet aggregate. Depending upon how aggregate voids are dealt with, calculated aggregate specific gravities can vary. If they are excluded entirely, then the specific gravity is …

Determining the specific gravities of coarse aggregates …

The current method of specific gravity and absorption of coarse aggregate testing is based on the AASHTO T 85 and ASTM C-127 standards. This approach involves the soaking of the coarse aggregate samples for 15h (AASHTO T 85) and 24. ± 4 h (ASTM C-127), and drying the aggregate to its saturated-surface dry (SSD) state with the aid …

SPECIFIC GRAVITY AND ABSORPTION OF FINE …

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 …

The Effect of Aggregate Properties on Concrete

Absolute specific gravity (ASG) refers to the solid material excluding the pores, and bulk specific gravity (BSG), sometimes called apparent specific gravity, includes the volume of the pores. For the purpose of mixture proportioning, it is important to know the space occupied by the aggregate particles, including the pores within the particles.

Bulk Specific gravity and Water Absorption of Aggregate

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.

SPECIFIC GRAVITY AND ABSORPTION OF FINE AGGREGATE …

BULK SPECIFIC GRAVITY (SATURATED SURFACE-DRY BASIS) 9.1 Calculate the bulk specific gravity, 23/23°C (73.4/73.4°F), on the basis of weight of saturated surface-dry aggregate as follows: Bulk sp gr (saturated surface-dry basis) =S /(B + S - C), NDR T 84 2011 Page 7 of 9 9.1.1 If the Le Chatelier flask method was used, calculate the bulk ...

Standard Test Method for Relative Density (Specific Gravity) …

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 …

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.

Coarse Aggregate Specific Gravity

Specific gravity is a measure of a material's density (mass per unit volume) as compared to the density of water at 73.4°F (23°C). Therefore, by definition, water at a temperature of 73.4°F (23°C) has a specific gravity …

Standard Test Method for Relative Density (Specific Gravity) …

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 …

Density, Relative Density (Specific Gravity), and …

the computation of voids in aggregate in Test Method C 29/ C 29M. Relative density (speciﬁc gravity) (SSD) is used if the aggregate is wet, that is, if its absorption has been satisﬁed. Conversely, the relative density (speciﬁc gravity) (OD) is used for computations when the aggregate is dry or assumed to be dry.

Specific Gravity of Coarse Aggregate

Additionally, specific gravity is used to classify aggregates into different types based on their density. Test Procedure for Determining Specific Gravity of Coarse Aggregate. The specific gravity of coarse aggregate can be determined using the following procedure: Thoroughly clean and dry the specific gravity flask or pycnometer. Weigh the ...

SATURATED SURFACE-DRY SPECIFIC GRAVITY AND …

2.3 Bulk specific gravity—the ratio of the oven-dry weight of the aggregate to the bulk volume of the aggregate particles. 2.4 Bulk volume (of an aggregate)—the volume of water displaced by aggregate in a SSD condition, including both the volume of the impermeable portion of the aggregate particles and the volume of the permeable voids in ...

Bulk Specific Gravity: Easy Guide for Engineering

Construction projects utilize bulk specific gravity in quality control and material testing to determine the specific gravity of coarse aggregates soaked for 15 hours. AASHTO T85 and ASTM C127 outline the test methods for determining specific gravity, including bulk specific gravity and water absorption.

Standard Test Method for Relative Density (Specific Gravity) …

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. Alternatively, the relative density (specific gravity) (OD) is used for computations when the aggregate is dry or assumed to be dry.

Specific Gravity Formulas

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 ... According to the principle of buoyancy, the apparent mass of the aggregate particles suspended in water (C) is equal to their oven‐dry ...

Solved Problem 5 Two stockpiles, 1 and 2 have bulk-specific

If the bulk dry specific gravity of the aggregate is 2.620, calculate the percent voids between aggregate particles for each trial (5 points) Problem 7 Answer the following short questions. (10 points) a) Which part of the nation (USA) requires air-entrained concrete? b) You need to open a concrete road within 24 hours of construction. ...

Solved 5.14 Coarse aggregate is placed in a rigid bucket and

Weight of bucket filled with dry rodded coarse aggregate: Trial 1 = 76.6 lb Trial 2 = 75.1 lb. Trial 3 = 78.8 lb a. Calculate the average dry-rodded unit weight b. If the bulk dry specific gravity of the aggregate is 2.620, calculate the percent voids between aggregate particles for …