SUPERPAVE ASPHALT CONCRETE . 334-1 Description. 334-1.1 General: Construct a Superpave Asphalt Concrete pavement with the type of ... and individual layer thickness will be converted to spread rate based on the maximum specific gravity of the asphalt mix being used, as well as the minimum density level, as shown in the following equation:
If the maximum specific gravity of the mixture is 2.41 and the bulk specific gravity is 2.35, determine: Mix Composition by Material Specific Gravity material weight of total mix Asphalt cement 6.4 1.02 Coarse aggregate 2.51 52.4 Fine aggregate 2.74 33.5 Mineral filler 2.69 7.7 (a) The bulk specific gravity of aggregates in the paving mixture b ...
1.1 Maximum Specific Gravity of Asphalt Mix (left( {G_{mm} } right)). The widely adopted experimental procedure for measuring the maximum specific gravity ((G_{mm})) of bituminous mixtures was first proposed by Rice [].The method was later refined and adopted as a standard by the American Society for Testing and Materials …
Result of Specific Gravity Test of Bitumen. Using the specific gravity of bitumen formula, the specific gravity of the specimen is recorded as the ratio of the mass of an equal volume of distilled water to the mass of the specimen. Within the range, the specific gravity of bitumen falls – 0.97 to 1.02 at 27 °C.
The value of theoretical maximum specific gravity of bituminous paving mixture (Gmm) plays a significant role in the performance of paving mixes. The Impact of (Gmm) can be noticed on properties of bleeding, rutting, raveling, and fatigue. Calculation of Gmm is fundamental to the design process of asphalt concrete mixes. It can be …
3. Determine the specific gravity of the aggregate combination and asphalt cement. 4. Prepare the trial specimens with varying asphalt contents. 5. Determine the specific gravity of each compacted specimen. 6. Perform stability tests on the specimens. 7. Calculate the percentage of voids, and percent voids filled with Bitumen in each …
If the specific gravity of the asphalt cement used in a sample of asphalt concrete mix is 1.01, the maximum specific gravity of the mix is 2.50, and the mix contains 6.5% by weight of asphalt cement, determine the effective specific gravity of the mixture. a. …
Asphalt Specific Gravity. Because the specific gravity of asphalt binders change with temperature, specific gravity tests are useful in making volume corrections based on …
Bulk specific gravity (G ). Theoretical maximum specific gravity (TMD, G mm). These densities are then used to calculate the volumetric parameters of the HMA. Measured void expressions are usually: ... Mix Design Methods for Asphalt Concrete and Other Hot-Mix Types. Manual Series No. 2 (MS-2). Asphalt Institute.
3.2—Specific gravity (relative density) 3.2.1—Definition 3.2.2—Determination of specific gravity 3.2.3—Significance of specific gravity 3.2.4—Absolute volume calculations 3.3—Absorption and surface moisture 3.3.1—Mixing water and water-cementitious material ratio 3.3.2—Absorption and total moisture content 3.3.3—Surface ...
One of the most significant components of asphalt concrete is filler. It affects the characteristics of asphalt concrete [2] [3] [4]. Surfaces of this general type that are properly designed and ...
The theoretical maximum specific gravity (Gmm) of a HMA mixture is the specific gravity excluding air voids. Thus, theoretically, if all the air voids were eliminated from an …
An asphalt concrete specimen has the following properties: Asphalt content = 5.5% by total weight of mix Bulk specific gravity of the mix = 2.475 Theoretical maximum specific gravity = 2.563 Bulk specific gravity of aggregate = 2.689 Ignoring absorption, calculate the percents VTM, VMA, and VFA.
Question: Write the volumetric code names for the following quantities: Bulk specific gravity of mixture Maximum specific gravity of mixture Absorbed asphalt (binder) content Volume of air in asphalt concrete mixture Mass of total mixture or Bulk mass of mixture Mass of aggregate (solid)
T 166 Bulk Specific Gravity of Compacted Hot Mix Asphalt Using Saturated Surface-Dry Specimens T 209 Theoretical Maximum Specific Gravity and Density of Hot Mix Asphalt Paving Mixtures ... Mix Design Methods for Asphalt Concrete and Other Hot-Mix Types. 3.4 Voids in the mineral aggregate (VMA) – The volume of the intergranular void space …
Determine the specific gravity of the asphalt cement. 2.3. Calculate the Bulk Specific Gravity of the aggregate combination in the paving mixture. (G sb) 2.4. Measure the Maximum Specific Gravity of the loose paving mixture. (KT-39) (G mm) 2.5. Measure the Bulk Specific Gravity of the compacted paving mixture. (KT-15) (G ) 2.6.
Given the structure of a typical aggregate particle, there are several different kinds of specific gravity. This section will first describe the structure of a typical aggregate …
An asphalt concrete specimen has a mass in air of 1264.7g, mass in water of 723.9g, and saturated surface-dry mass of 1271.9g. a) Calculate the bulk specific gravity of the specimen?b) If the maximum theoretical specific gravity of the specimen is 2.531, what should be the air void content (VTM) of the specimen in percent?
Received of Asphalt Cement (AC), By Materials Division Refinery Units PG 64-22 PG 64-220K PG 64-28 PG 70-22 PG 70-280K PG 70-28 PG 76-22 PG 76-280K AC-15.STR ... Average Specific Gravity to be used on all ODOT projects Glen Oliver from January 1, 2002, thru December 31, 2002. Liquid Asphalt Reynolds Toney, P.E.
Specific Gravity of Asphalt Cement • Because the specific gravity of asphalt binders change with temperature, specific gravity tests are useful in making volume corrections based on temperature. • The specific gravity at 15.6° C (60° F) is commonly used when buying/selling asphalt cements. • A typical specific gravity for asphalt for ...
specific gravity of the voidless HMA mixture. In this method, the absorption of asphalt by aggregates is calculated from the maximum specific gravity of the mixture, the asphalt content, and the bulk specific gravity of the aggregate used in the HMA mixture. This method is now standardized as ASTM D2041.
Several AASHTO and ASTM standards govern the measurement of the specific gravity of asphalt, also known as theoretical maximum specific gravity, or simply the Rice Test.
Before we discuss the various methods of measuring it, let's understand the gravity of cement. At its core, specific gravity is a measure that tells us how much denser a substance is when compared to the density of water. So, when we talk about the gravity of cement, we are trying to understand its density relative to water. The Ideal Value
The maximum theoretical specific gravity of an asphalt concrete is 2.550. Other components are specified as follows: Gmm =a.5s o Apparent Specific Gravity G ma Material Specific Gravity G % by Weight Asphalt cement Limestone dust 1.020 6.3 13.7 30.4 49.6 2.820 2.650 2.905 Sand 2.650 2.650 Course aggregates 2.873 9.
This research examined the density and permeability of samples from both field trials and a laboratory experiment. The NCAT permeameter was used to evaluate infiltration rates for both existing pavements, rehabilitation projects and for fog seals. There was some measurement success with the existing pavements and fog sealed surfaces …
Using Maximum Specific Gravity . SCDOT Designation: SC-T-87 (Revised 7/2019) 1. SCOPE. This method applies to situations where the asphalt roadway compaction is to be determined as a percentage of the asphalt mixture's daily maximum specific gravity. The Maximum Specific Gravity is often referred to as the Maximum Theoretical Specific
5.1 The theoretical maximum specific gravities and densities of asphalt mixtures are fundamental properties whose values are influenced by the composition of …
The maximum theoretical specific gravity of an asphalt concrete is 2.550. Other components are sp : ecified as follows Apparent Specific Gravity %by Weight Material Specific Gravity Asphalt cement Limestone dust Sand Course aggregates 1.020 2.820 2.650 2.650 2.650 2.905 2.873 6.3 13.7 30.4 49.6 8.
This paper provides an investigation of the impact of adding sulfur to asphalt mixtures. After reviewing many research articles, it is determined that adding sulfur to asphalt mixtures increases their Marshall stability, stiffness, ductility of binder at low temperatures, and specific gravity. The flow and permanent deformation have …
Theoretical Maximum Specific Gravity The theoretical maximum specific gravity of an asphalt concrete mixture is the specific gravity of the mixture at zero air void content. It is one of the most difficult tests performed in paving materials laboratories and also one of the most important. Like bulk specific gravity, G A B C = â ( )5 1- 54 ...
