#### SPECIFIC GRAVITY OF COARSE AGGREGATE AASHTO T 85

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.IRC 129 2019 Cover Public.Resource.Org,It is suggested that a good starting point be 5.0% for mixes with aggregate specific gravities equal to or less than 2.75. If the bulk specific gravity of the aggregate exceeds 2.75 the bitumen content can be reduced slightly. The VMA of the mix must still meet the specified minimum value. 4.5 Specimen preparation and testing

#### Specific Gravity of Coarse Aggregates: Its Importance

Sep 19, 2019· 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 3 Aggregate Properties IN.gov,3-3 The following chart illustrates these relationships for some common substances. Typical Values Substance Specific Gravity Density (lb/ft3) Water 1.0 (73.4 °F) 62.4 lb/ft3 (73.4 °F) Limestone 2.6 165 to 170 lb/ft3 Lead 11.0 680 to 690 lb/ft3 The density and the specific gravity of an aggregate

#### Specific Gravity and Water Absorption Tests on Aggregates

Aggregate Sample 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 METHOD OF TEST FOR SPECIFIC GRAVITY AND ABSORPTION ,2. Bulk specific gravity (oven-dry basis). a. Use this procedure for bituminous mix aggregates, aggregate base and cement treated base aggregate. b. Specific Gravity = A/(B −C) 3. Bulk specific gravity (saturated surface -dry basis). a. Use this procedure for portland cement concrete aggregates. b. Specific Gravity = B/(B −C) 4.

#### 7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN

Sep 12, 2015· The specific gravity of aggregates normally used in road construction ranges from about 2.5 to 2.9. Water absorption values ranges from 0.1 to about 2.0 percent for aggregates normally used in road surfacing. Also read: Specific Gravity & Water Absorption Test Procedure of Aggregates 7.Bitumen Adhesion TestSPECIFIC GRAVITY OF COARSE AGGREGATE AASHTO T 85,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 BLENDING, ABSORPTION, & SPECIFIC GRAVITY

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 = 500.1IRC 129 2019 Cover Public.Resource.Org,Congress Specification IRC:SP:53. 3.2 coarse aggregates The coarse aggregate shall consist of crushed rock retained on 4.75 mm sieve. It shall be of cubical shape, clean, hard, durable and free from dust, soft organic and other deleterious substances. The aggregate shall satisfy the physical requirements given in table 1.

#### Coarse Aggregate Specific Gravity Pavement Interactive

AASHTO T 85 and ASTM C 127: Specific Gravity and Absorption of Coarse Aggregate; Background. 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).specific gravity and bulk density of crushed sand gravel,Specific Gravity of Coarse Aggregates Its Importance . As per the definition given in the is part iii,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 c divided by its absolute volume including

#### 7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN

Sep 12, 2015· Then crushed aggregates are then sieved through 2.36 mm sieve and weight of passing material The specific gravity of aggregates normally used in road construction ranges from about 2.5 to 2.9. Water absorption values ranges from 0.1 to about 2.0 percent for aggregates normally used in road surfacing. IRC has specified maximum strippingIS 383 (1970): Specification for Coarse and Fine,Sep 25, 1970· 2.1.2 Crushed Stone Sand Fine aggregate produced by crushing hard stone. 2.1.3 Crushed Grace1 Sand line aggregate produced by crushing natural gravel. . 2.2 Coarse Aggregate -- Aggregate most of which is retained on 4*75-mm IS Sieve and containing only so much finer material as is permitted for

#### Mix Design For Concrete Roads As Per IRC-15-2002

Specific Gravity: 3.00: MIX-B With OPC-43- Grade conforming to IS: 8112-1989. 7 days strength 40.5N/mm 2. Specific Gravity : 3.15: MIX-C With OPC of Mix-B and Fly ash conforming to IS:3812 (Part-I)-2003 Specific Gravity : 2.20: Note Requirements of all the three mixes are the same. Fine Aggregate, Coarse Aggregate and Retarder Super plasticizerAGGREGATE LAB TESTING TECHNICIAN WORKBOOK,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 No.100 (150 µm) sieve.

#### Density of Cement, Sand and Aggregate, Bulk Density of

Absolute Specific Gravity = (Weight of oven-dried aggregate at 100°c for 24 hours) (Weight of water’s volume equal to that of aggregate’s solids excluding pores) Essential Points Most of the aggregates possess a relative density within 2.4 2.9 with a similar particle density about 2400-2900 Kg/m 3 ( 150-181 lb/ft 3 ).METHOD OF TEST FOR SPECIFIC GRAVITY AND ,2. Bulk specific gravity (oven-dry basis). a. Use this procedure for bituminous mix aggregates, aggregate base and cement treated base aggregate. b. Specific Gravity = A/(B −C) 3. Bulk specific gravity (saturated surface -dry basis). a. Use this procedure for portland cement concrete aggregates. b. Specific Gravity = B/(B −C) 4.

#### Specific Gravity and water absorption test for aggregates

Oct 04, 2020· The specific gravity of aggregates normally used in road construction ranges from about 2.5 to 3.0 with an average value of 2.68. Water absorption value ranges from 0.1 to 2.0 % for aggregates normally used in road surfacing IRC has specified the maximum water absorption valves as 10 percent for aggregate used in bituminous surface dressing andPROPERTIES OF AGGREGATES FOR CONCRETE Civil Engineering,Low specific gravity Aggregates are generally weaker than those with high specific gravity. Low specific gravity generally indicates porous, weak and absorptive aggregate. This property helps to the identification of good and suitable aggregates. Specific gravities of aggregate vary between 2.0 and 3.0. Specific gravities are primarily of two

#### Specific Gravity Of General Materials Table

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).AGGREGATE BLENDING, ABSORPTION, & SPECIFIC GRAVITY,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

#### Coarse Aggregate Specific Gravity Pavement Interactive

AASHTO T 85 and ASTM C 127: Specific Gravity and Absorption of Coarse Aggregate; Background. 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).Specific Gravity and water absorption test for aggregates,Oct 04, 2020· The specific gravity of aggregates normally used in road construction ranges from about 2.5 to 3.0 with an average value of 2.68. Water absorption value ranges from 0.1 to 2.0 % for aggregates normally used in road surfacing IRC has specified the maximum water absorption valves as 10 percent for aggregate used in bituminous surface dressing and

#### specific gravity and bulk density of crushed sand gravel

Specific Gravity of Coarse Aggregates Its Importance . As per the definition given in the is part iii,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 c divided by its absolute volume including the natural voidsPROPERTIES OF AGGREGATES FOR CONCRETE Civil Engineering,Low specific gravity Aggregates are generally weaker than those with high specific gravity. Low specific gravity generally indicates porous, weak and absorptive aggregate. This property helps to the identification of good and suitable aggregates. Specific gravities of aggregate vary between 2.0 and 3.0. Specific gravities are primarily of two

#### AGGREGATE LAB TESTING TECHNICIAN WORKBOOK

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 No.100 (150 µm) sieve.Specific Gravity Of General Materials Table,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).

#### Mix Design For Concrete Roads As Per IRC:15-2011

3. Target average flexural strength for all A, B and C mixes S = S+ Zq =4.5 + 1.96 x 0.40 = 5.3 N/mm 2 at 28 days age 4. For Mix A, B and C free W/C ratio with crushed aggregate and required average flexural target strength of 5.3 N/mm 2 at 28 days from Fig. 1 Curve D found to be 0.42. This is lower than specified maximum W/C ratio value of 0.45 for OPC and 0.50 for PPC.Coarse Aggregate Angularity Pavement Interactive,It takes a sample of coarse aggregate and drops it into a cylinder of measured volume (Figure 4 and Video 1). Base on the weight of the aggregate in the cylinder and a known aggregate specific gravity, the volume of voids as a percentage of total volume can be calculated.

#### 7 Lab Tests on Aggregates to Make Better Concrete for

The specific gravity and water absorption of aggregates are important properties for designing concrete and bituminous mixes. Specific gravity of an aggregate is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. It is a quality measure and determines the strength of aggregate.Pavement materials: Aggregates IIT Bombay,The specific gravity of a solid is the ratio of its mass to that of an equal volume of distilled water at a specified temperature. Because the aggregates may contain water-permeable voids, so two measures of specific gravity of aggregates are used: apparent specific gravity and bulk specific gravity.

#### (PDF) Pavement materials: Aggregates 22.1 Overview

CHAPTER 22. PAVEMENT MATERIALS: AGGREGATES NPTEL May 3, 2007 Chapter 22 Pavement materials: Aggregates 22.1 Overview Aggregate is a collective term for the mineral materials such as sand, gravel, and crushed stone that are used with a binding medium (such as water, bitumen, Portland cement, lime, etc.) to form compound materials (such as bituminous concrete and Portland cement The specific gravity of silica fume is 22 Silica fume is,specific gravity of M sand is 2.70 confirming zone II as spec-ified in IS: 383 1970.The fineness modulus of river sand is 3 and the fineness modulus of M Sand is 2.85. Figures 6 and 7 show the fine aggregates used for making HSC. The particle distribution curve for river sand and M Sand are plotted using data obtained from sieve analysis test and it is shown in Fig. 8.

#### Replacement of Fine Aggregates by Recycled Construction

Dec 31, 2018· Hence, the beneficiation process is carried out by acid treatment process. After beneficiation, the water absorption capacity got reduced by 63%, soundness value improved by 29% and specific gravity increased by 13%. The aided aggregates were replaced for fine aggregates in M 30 and M 40 grade concrete. Results show construction and demolition,