specific gravity and absorption of aggregates are AASHTO T 85 and AASHTO T 84 for coarse and fine aggregates respectively. The corresponding ASTM methods are C 127 and C 128 respectively. The dividing sieve for separating coarse and fine aggregates is the 4.75 mm sieve.
5.Specific Gravity of Coarse Aggregates: It is the ratio of the dry weight of aggregate to the weight of an equal volume of water. The specific gravity of aggregate is determined along with the water absorption as specified in IS 2386 part III 1963. Sizes of Coarse aggregate:
The object of the experiment is to determine the Specific Gravity & Water Absorption of Coarse Aggregate. Specific Gravity is the ratio of the mass of a unit volume of aggregate at a stated temperature to the mass of the same volume of gas-free distilled water at a stated temperature. ... 6. 10 mm IS sieve. Click For Civil Engineering Videos ...
(cement:sand:granite). The coarse aggregate sizes namely 19 mm and 25 mm were also used along separately. The cement was subjected to specific gravity, fineness, consistency, setting time, chemical and composition compositions laboratory tests and analyses. The two …
This method of test covers the procedures for determining the specific gravity and absorption of aggregates. Coarse aggregate (Procedure I) represents aggregate retained on the No. 4 (4.75 mm) sieve. Fine aggregate (Procedure II) is all aggregate passing the No. 4 (4.75 mm) and retained on the 00 (150 µm) sieve.
Determine the fine and coarse aggregate specific gravity in accordance with AASHTO T 84 and AASHTO T 85, respectively. Modify AASHTO T 85 as follows: For Gravel Coarse Aggregates (¾" (19 mm) to No. 4 (4.75 mm)), modify AASHTO T 85 to include a 15-minute vacuum saturation according to
Water absorption value ranges from 0.1 – 2.0% for aggregate normally used in roads surfaces. Aggregates with water absorption up to 4.0% are acceptable in base coarse. APPARATUS: Balance 5 Kg capacity readable to 0.5g. Sample container in the form of a wire mesh bucket of capacity 4000 – 7000 cm 3 and not more than 6.3mm mesh.
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.
🕑 Reading time: 1 minuteContents:Properties of Aggregates and its Values for use in Construction1. Aggregates: Bulk Density, Specific Gravity and Voids2. Aggregates: Limiting Values of Mechanical Properties3. Approximate Water Absorption of Aggregates, by Weight4. Limits of Deleterious Materials (Percentage by Weight, Maximum)5. Bulking of Sands for Various Moisture Contents6. Surface Water ...
SPECIFIC GRAVITY AND ABSORPTION OF COARSE AGGREGATE FOP FOR AASHTO T 85 Scope ... • Sample container: a wire basket of 3.35 mm (No. 6) or smaller mesh, with a capacity of 4 to 7 L (1 to 2 gal) to contain aggregate with a nominal maximum size of 37.5 mm ... SPECIFIC GRAVITY AND ABSORPTION OF COARSE AGGREGATE.
There are three methods of testing for the determination of the specific gravity of aggregates, according to the size of the aggregates larger than 10 mm, 40 mm and smaller than 10 mm. For Samples larger than 10 mm, 40 mm, the below given test method is used and for samples smaller than 10 mm Pycnometer test is done.
The specific gravity of aggregates normally ranges from about 2.5 to 3.0. According to ' A. M. Neville ' (Author of the Properties of Concrete), the majority of natural aggregates have a specific gravity of between 2.6 and 2.7. However high specific gravity is …
Coarse Aggregate Specific Gravity • ASTM C127 – Dry aggregate – Soak in water for 24 hours – Decant water ... Absorption & Specific Gravity 27 19.0 mm 9.5 mm 12.5 mm. Aggregate Blending, Absorption & Specific Gravity 28 Blending of Aggregates • Reasons for blending
Aggregate Specific Gravity Types 4) Effective Specific Gravity, G se The volume measurement includes the volume of the aggregate particle plus the void volume that becomes filled with water during the test soak period minus the volume of the voids that absorb asphalt. Ratio of the mass in air of a unit volume of a permeable material at a stated ...
Procedure for Specific Gravity Test of Coarse Aggregate:-. Take clean sample of coarse aggregate (about 2 kg). The sample should be washed to remove fine aggregates. The aggregates coarser than 6.3 mm are taken. Then place the aggregate sample in the wire basket. Immerse the wire basket in distilled water, which is at a temperature of 22 ºC to ...
Answer (1 of 2): The specific gravity is usually measured with a hydrometer. Knowing the specific gravity of soils helps agronomy and civil engineers to determine how porous a soil is and how many voids it contains. It also indicates how saturated the soil is with water. Engineers use this measur...
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Answer (1 of 6): The specific gravity limit for coarse aggregate is about 2.5 to 3.0 The specific gravity of a solid is defined as the ratio of mass of given volume of solids to the volume of water at 4°C. The specific gravity for gravel is 2.65 to 2.68. The average value is 2.6 . There are many...
SPECIFIC GRAVITY AND ABSORPTION OF COARSE AGGREGATE FOP FOR AASHTO T 85 . Scope . This procedure covers the determination of specific gravity and absorption of coarse aggregate in accordance with AASHTO T 85-13. Specific gravity may be expressed as bulk ... a wire basket of 3.35 mm (No. 6) or smaller mesh, with a capacity of 4 to 7 L (1 to 2 ...
For mineral filler, specific gravity bottle is used and the material is filled upto one-third of the capacity of bottle. The rest of the process of determining specific gravity is similar to the one described for aggregate finer than 6.3 mm.
The sieves normally used are the standard 8 inch (200 mm) sieves. With Fine Aggregate the coarse sieve or the 3/8" (9.5 mm) sieve at the top; each sieve below is finer; and the finest sieve, a No. 200 (75 µm) ... It is similar in nature to the coarse aggregate specific gravity test.
Design a concrete mix for the following performances and ingredients: • Compressive strength at 28 days = 35MPa, slump 85 mm. • Crushed coarse aggregate of size 14 mm readily available. • Fine aggregate is washed coarse sand, fineness modulus = 2.5. • Specific gravity of combined aggregate =2.6. • Water absorption of fine aggregate = 5%.
· On each coarse aggregate sample (four natural and eight recycled coarse aggregates) different physical and mechanical properties were determined, such as specific gravity at saturated and surface-dry state, water absorption in 24 h, weight loss by the Los Angeles abrasion test, percentage of material finer than 75 μm, unit weight ...
1204 SPECIFIC GRAVITY & ABSORPTION of COARSE AGGREGATE AASHTO Designation T 85 (Mn/DOT Modified) 1204.1 GENERAL This test method is intended for use in determining the bulk and apparent specific gravity, and absorption of coarse aggregates (retained on the 4.75mm [#4] sieve). 1204.2 APPARATUS
Testing of Coarse Aggregates
The key information of the mix design is given below: • Characteristics strength of concrete, fc' is 50 MPa at 28 days. • Coarse aggregate sizes used in the mix are 10 mm, 20 mm and 40 mm respectively Specific gravity of coarse aggregate is 2.7 • Total amount of …
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.
Coarse Aggregate Specific Gravity | Pavement Interactive. 22 Apr 2011 … It is similar in nature to the fine aggregate specific gravity test. …. Sample sizes range from 2000 g for a inch ( mm) NMAS to 5000 g for a … »More detailed
Water Absorption and Specific Gravity of Aggregate < 10 mm _ test Procedure Pycnometer Method Sample size: 1.0 Kg – for Aggregates 4.75mm to 10 mm and ). 0.5 Kg – for aggregates finer than 4.75 mm. Put the sample for 24 hours in water at 22 to 32 degree C temperature. The sample is taken out and drained and is put to SSD conditions and weighed.
Corresponding coarse aggregate specific gravity and absorption testing, utilizing the appropriate plus No. 4 or plus No. 8 material, shall be performed in accordance with Arizona Test Method 210. ... follows: 40 3 mm inside diameter at the top, 90 3 mm inside diameter at the bottom, and 75 3 mm in height, with the metal having a minimum ...
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