Apr 01, 2017· Specific heat capacity of aggregate has significant role on energy saving in asphalt mix production. • Specific energy can be decreased from 30% to 64% owing to use of low specific heat capacity aggregate. • Results clearly showed the energy saving is sufficient to supply power 44,007 to 664,880 Chinese households per annum.
Sep 04, 2017· Procedure for the determination of specific gravity of fine aggregate. Clean the pycnometer, dry it, Find the weight of the pycnometer. Take about 200gm of coarse aggregate sample in the pycnometer.Weight the pycnometer, Note the weight W2; Fill the remaining part of pycnometer with distilled water and weight W3
Standard : ASTM C128: Title: Specific Gravity and Absorption of Fine Aggregate (ASTM C128) Scope: This test method covers the determination of the average density of a quantity of fine aggregate particles (not including the volume of voids between the particles), the relative density (specific gravity), and the absorption of the fine aggregate.
Bulk Specific Gravity of the Mixture - G mb = 2.425 Theoretical Maximum Specific Gravity - G mm = 2.521 Asphalt Binder Specific Gravity - G b = 1.015 Asphalt Content - P b = 5.0 % (by mass of total mix) Percent passing No. 200 = 5.3%
•This method was studied as a part of NCHRP 4‐35 "Testing of Specific Gravity and Absorption of Aggregates" This study found that: •This method applies to coarse aggregate, fine aggregate and combined aggregate •This was the only method suitable for measuring combined aggregates;
In Part 2 of this 3-part series, we addressed how to properly prepare bulk field samples for testing in the lab, necessary equipment, and helpful tips.Now that you understand how to perform all the pre-work on samples prior to testing, we'll cover test procedures for effective determination of the particle size distribution of coarse aggregates.
Aggregate specific gravity is needed to determine weight-to-volume relationships and to calculate various volume-related quantities such as voids in mineral aggregate (VMA), and voids filled by asphalt (VFA). Absorption can be used as an indicator of aggregate durability as well as the volume of asphalt binder it is likely to absorb
Sep 10, 2002· This lab is performed to determine the specific gravity of soil by using a pycnometer. Specific gravity is the ratio of the mass of unit volume of soil at a stated temperature to the mass of the same volume of gas-free distilled water at a stated temperature. Standard Reference: ASTM D 854-00 – Standard Test for Specific Gravity of Soil Solids
As specific gravity is just a comparison, it can be applied across any units. The density of pure water is also 62.4 lbs/cu.ft (pounds per cubic foot) and if we know that a sample of ammonium nitrate has a sg of 0.73 then we can calculate that its density is 0.73 x 62.4 = 45.552 lbs/cu.ft.
Mar 01, 2009· 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 of a dry absorbent cloth.
Specific gravity and Water Absorption Test of Aggregate major important test 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, it testing becomes essential before use.
Jun 22, 2015· specific gravity, and the maximum density of the minus 4 material. ... If we could separate the +4 from the minus 4 material, we would basically have a soil and some open graded aggregate. When working with aggregates we use the term absorption. This term is "kin" to ...
T 2 Sampling of Aggregates T 11 Materials Finer Than 75 µm (No. 200) Sieve in Mineral Aggregates by Washing T 27 Sieve Analysis of Fine and Coarse Aggregates T 84 Specific Gravity and Absorption of Fine Aggregate T 85 Specific Gravity and Absorption of Coarse Aggregate T 112 Clay Lumps and Friable Particles in Aggregate
Sep 19, 2019· 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 Gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. Water, at a temperature of 73.4°F (23°C) has a specific gravity of 1. Specific Gravity is important for several reasons. Some deleterious particles are lighter than the good aggregates.
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.
Sep 17, 2019· Sieve Analysis of Fine Aggregates – Introduction. Sieve analysis of fine aggregates is one of the most important tests performed on-site. Aggregates are inert materials that are mixed with binding materials such as cement or lime for the manufacturing of mortar or concrete.It is also used as fillers in mortar and concrete. Aggregates size varies from several inches to the size of the ...
We used the ASTM C127-12 testing procedure for the coarse aggregate and the ASTM C128-12 test procedure for the fine aggregate. Determining the specific gravity of aggregates is important since it provides a relationship between volume and mass. Specific gravity relates volume and mass. Also, it relates weight which in turn creates a certain load.
Specific gravity of fine aggregate (sand) is the ratio of the weight of given volume of aggregates to the weight of equal volume of water. The specific gravity of sands is considered to be around 2.65. Contents:Apparatus for Specific Gravity TestProcedure of TestCalculationsQuestion : Apparatus for Specific Gravity Test A balance of capacity not less […]
Jul 15, 2018· I find that the key to understanding the importance is understanding the specific fundamentals of what we are discussing. There is some good discussion on this question, but all of the answers have lacked a fundamental physical precision: Specific...
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.
The Fine Aggregate Test (ASTM C128 and AASHTO T 84) is a comparison of sample masses in oven-dry, saturated surface-dry (SSD), and immersed conditions. This test method offers alternate procedures to determine specific gravity. Either a volumetric flask or a simple pycnometer can be used for the gravimetric procedure. For the volumetric procedure, a special Le Chatelier flask is needed.
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
Specific Gravity Flask (Chapman) For determining approximate percentage of voids and surface moisture in fine aggregates. H-3391 Volumetric Flasks for Specific Gravity. Glass flasks used in specific gravity determinations, comply with ASTM D854. H-2640 Hubbard 24ml Specific Gravity Bottle. Hubbard-form 24ml bottle for determination of specific ...
Specific gravity of aggregate is also required in calculating the compacting factor s connection with the workability measurements. Similarly, specific gravity of aggregate is squired to be considered when we deal with light weight concrete. Average specific gravity of …
Jan 09, 2015· G = Specific gravity of the aggregate. ϒ = Bulk density in kg/litre. Result. The bulk density is reported in kg/litre to the nearest 0.01 kg. The percentage of voids is reported to the nearest whole number. Mention whether the aggregate is (a) oven dry, (b) saturated and surface dry or (c) with a given percentage of moisture.
Sep 12, 2015· Apparent specific gravity and; Bulk specific gravity. Apparent Specific Gravity, G app, is computed on the basis of the net volume of aggregates i.e the volume excluding water-permeable voids. Thus. G app = [(M D /V N)]/W. Where, M D is the dry mass of the aggregate, V N is the net volume of the aggregates excluding the volume of the absorbed ...
Designation D-854-02 and to calculate the specific gravity of aggregates coarser than the No. 4 (4.75 mm) sieve, Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate, Designation C 127-04. An average of the calculated specific gravity is used as the specific gravity of the entire sample.