Astm D1559 Marshall Pdf To Word
Chapter 4 Marshall Mix Design and Analysis School of Engineering, Cochin University of Science and Technology 49 specified in the ASTM standard (ASTM D1559). MARSHALL METHOD OF ASPHALT-CONCRETE MIX. In the Marshall test method of mix. The maximum specific gravity of aggregate mixture should be obtained as per ASTM. Be done according to ASTM D6926 (ASTM 2010) and ASTM D6927 (ASTM 2010), subjected to double face compaction at 75 blows compaction per face, but compaction of wearing course loose mix will certainly fail to meet the specified criteria. At this stage, the wearing course will only subjected to single face compaction.
April 2, 2019voids analysis and stability – flow test. Strength is measured in terms of the ‘ Marshall’s Stability’ of the mix following the specification ASTM D (), which. To design the Asphalt concrete mix using Marshall method. . Max. Min. Max. Marshall specimens. (ASTM D ). No. of comp. Blows, each end of specimen. (ASTM – D – & MS-2) The original Marshall method is applicable only to hot-mix asphalt paving mixtures containing aggregates with.
Author: | Tasar Malara |
Country: | India |
Language: | English (Spanish) |
Genre: | Business |
Published (Last): | 6 August 2009 |
Pages: | 244 |
PDF File Size: | 20.26 Mb |
ePub File Size: | 17.37 Mb |
ISBN: | 380-3-76570-786-1 |
Downloads: | 55180 |
Price: | Free* [*Free Regsitration Required] |
Uploader: | Dazragore |
Automatic Marshall Stability Test Machine
The main advantage of this machine is its high flexibility as a general purpose testing system, ensured by its generous dimensions which allow the placement of an Test reports can be instantly printed using an optional thermal printer.
Motor, worm gear system and Utouch Pro Control Unit are housed within the base unit. The aggregates and filler are mixed together in the desired proportion as per the design requirements and fulfilling the specified gradation. Each test requires a list of accessories depending on the type of test and on the reference standard.
The stability value is calculated regarding this factor. In between the base and the proving ring, the specimen contained in test head is placed.
Bruce Marshall, a former Bituminous Engineer with the Mississippi State Highway Department, formulated the concepts of the Marshall method of designing paving mixtures. View odering information to select the list of accessories suitable for each This offset is subtracted from the displacement value at peak point and called as flow.
The loss of stability on immersion in water at 60 0 C. Soil – CBR loading presses: In the Marshall method each compacted test specimen is subjected to the following tests and analysis in the order listed below: The proportions in which the different aggregates, filler and bitumen are to be mixed are specified by weight or by volume for implementation during construction.
The EN covering the Determination of the indirect tensile strength of bituminous mixtures, prescribe a water Weigh into separate pans for each test specimen the amount of each size fraction required to produce a batch that will result in a compacted specimen Two compaction hammers are recommended. An important feature is provided by the processing unit that controls the speed in a closed-loop modeavoiding speed calibrations and tension fluctuation effects.
Maintenance Spares Technical trainings Warranty Academy. All the accessories have to be ordered separately.
ASTM D, Test equipment Controls
The sharpest v1559 is shifted 1. Utouch Pro enables the users to display current memory usage and test results with its advanced data and memory management interface.
This will normally be about gm 2.
The load jack, DC motor and controls are housed in an ergonomic cabinet. All parts can be ordered individually. Automatic Marshall Stability Test Machine. The pedestal should be installed on concrete slab so that the post is plumb and the cap is level.
The required quantity of the mix is taken so as to produce a compacted bituminous mix specimen of thickness General lab – Water baths: To determine the stability, flow, voids, voids in mineral aggregates, voids filled with asphalt and density of the asphalt mixture by Marshall stability test. Newer Post Older Post Home. The software includes control of machine, acquisition of load and displacement data, saving them and generating reports.
CIVIL QUALITY CONTROL LAB: MARSHALL STABILITY TEST.(ASTM – D – & MS-2)
A limit switch is provided for the bottom limit of travel. Posted by SatyaPrasad at 1: In case the mix designed does not fulfill any one or more of the design requirements, the gradation of the aggregates or filler content or bitumen content or combination of these are altered and the design tests are repeated till marshal the requirements are simultaneously fulfilled.
A real-time test graph and transducer data are displayed on the touchscreen. The 50 kN capacity and the fully variable test speed of 0.
TOP Related Posts
- Marshall Mix Design Procedure
The word asphalt, asphaltic concrete, bituminous mixes all is pointing to the same things almost. The shining blackish paved road we ride almost every day and almost several hours of our lives are spent over them is asphaltic pavements.
You know asphalt pavements have the highest riding quality among all others |
The transportation engineers, know that the two basic types of pavements is rigid pavement or flexible pavement. Flexible pavement deforms slightly under the application of the dynamic load of traffic whereas rigid pavement is the one that stands firm and it bridges the voids and gaps in the underneath bearing soil.
We would not here go into the details of these but as far as flexible pavements are concerned these are one of the most common, high riding quality paved roads on earth. The flexible pavements have a wearing course (the top few cms of the highway which is expected to get wear and tear due to traffic movement) which is made up of high quality fine asphaltic concrete.
Asphalt is basically combination of bitumen and aggregate, the surface of aggregates are applied with bitumen and then bitumen acts as a binding agent that makes it a solid and firm material called asphaltic concrete. Depeche mode discography torrent kickass download.
Like we all know about traditional Portland cement concrete that its properties and strength is largely dependent on the amount and proportion in which the constituents are mixed, same is the case here in asphaltic concrete.
What is HMA or Hot Mix Asphalt
Sometimes there is a term written in some texts as HMA or Hot Mix Aspahlt it is basically the same thing like that of Bitumen as asphalt binder and aggregate.
HMA mix design is the process of determining what aggregate to use, what asphalt binder to use and what the optimum combination of these two ingredients should be.
Main objective is to determine an economical and workable mix which comprises of a suitable blend of aggregates and a corresponding asphalt content.
What is Job Mix Formula (JMF)
The end result of a successful mix design is a recommended mixture of aggregate and asphalt binder. This recommended mixture, which also includes aggregate gradation and asphalt binder type is often referred to as the job mix formula (JMF)
Properties of Ideal Asphaltic Concrete Mix
The main objective of the Job Mix Formula, Mix Design Method, Marshall Mix Design method is to determine an ideal and optimum asphalt mix that has following properties :-
1. Resistance to permanent deformation: The mix should not distort or be displaced when subjected to traffic loads. The resistance to permanent deformation is more important at high temperatures.
2. Fatigue resistance: the mix should not crack when subjected to repeated loads over a period of time.
3. Resistance to low temperature cracking. This mix property is important in cold regions.
4. Durability: the mix should contain sufficient asphalt cement to ensure an adequate film thickness around the aggregate particles. The compacted mix should not have very high air voids, which accelerates the aging process.
5. Resistance to moisture-induced damage.
6. Skid resistance.
7. Workability: the mix must be capable of being placed and compacted with reasonable effort.
8. Low noise and good drainage properties: If the mix is to be used for the surface (wearing) layer of the pavement structure.
Marshall Method of Mix Design
According to ASTM D1559 which uses Marshall mix design method for getting JMF as optimum Aspahlt Mix, there are 6 basic steps involved in it :-
- Aggregate Selection
- Asphalt Binder Selection
- Sample Preparation (including compaction)
- Density and voids calculations
- Stability determination using the Marshall Stability and Flow test
- Optimum asphalt binder content selection
There are two major features of the Marshall method of designing mixes namely,
- density – voids analysis
- Stability – flow tests.
Marshall Mix Design Procedure
The first step in the Marshall Mix Design method is to prepare the samples as described below :-
The aggregate gradation is selected from the following table and then after sieving the desired quantity of each gradation approximately 1200 grams of aggregates are taken.
Table no. 1 Aggregate Specification |
The aggregates are then heated to a temperature of 175 to 190 degree centigrade. As for first trial 3.5 to 4.0 percent by weight of the aggregates Bitumen is taken and heated to a temperature of 121 to 125 degree centigrade.
Sample Preparation |
Marshall Drop Hammer |
Theoretical Specific Gravity
Bulk Specific Gravity
Air Voids Percent Vv
Percent Volume of Bitumen Vb
Voids in Mineral Aggregate (VMA)
Voids Filled with Bitumen VFB or Voids Filled with Aspahlt (VFA)
Marshal Stability and Flow Test
Marshall Sample Extractor |