Chapter 11 marshall method of asphaltconcrete mix design. Evaluation of marshall and hveem mix design procedures for. There are two major features of the marshall method of designing mixes namely, density voids analysis and stability flow test. Since the late 1990s, the department has established a goal of implementing a newer mix design method, referred to as superpave. This is a tutorial video for students of civil engineering of marshal stability and flow test. Student resources online learning marshall university. Maintaining 35% air voids in the mix is stressed at all times. The design of bituminous mixture by the departments modified marshall method involves the proportioning of the aggregates and asphalt to produce a mix that. Bruce marshall, a former bituminous engineer with the mississippi state highway department, formulated the concepts of the marshall method of designing paving mixtures. Major steps in superpave nselection of materials, nselection of a design aggregate structure. Superpave overview nthe final product of the shrp asphalt program area is superpave. This paper discussed the reasons for selecting a qualitative approach for the present study, the rationale for selecting an interpretive approach within a qualitative method, and the data collection method.
Jul 06, 2014 demonstration of test methods to measure height, bulk specific gravity, and stability and flow of 100mm diameter marshall asphalt specimens. Asphalt, rutting, compaction, marshall design, air voids. Marshall stability test procedure astm d6927 06 standard. The marshall method seeks to select the asphalt binder content at a desired density that satisfies minimum stability and range of flow values white, 1985 1.
Comparison between marshall and superpave mixtures design 396 alqadisiya journal for engineering sciences, vol. Army crops of engineers, through extensive research and correlation studies, improved and added certain features to marshall s test procedure, and ultimately developed mix design criteria. Originally developed by bruce marshall of the mississippi state highway department, the us army corps of engineers refined and added certain features to marshalls approach and it was then subsequently. The stability of the mix is defined as a maximum load carried by a compacted specimen at a standard test temperature of 600 c. The mix is composed usually of aggregate and asphalt cements. This method covers the formulas used to compute the various values used in the marshall mix design of 100% virgin aggregate mixtures or reclaimed material and virgin aggregate mixtures. Because the mix design procedure currently used in saudi arabiathe marshall mix designdoes not measure shear strength of the paving mixture, an attempt was made to ex plore and evaluate other design procedures, such as the hveem mix design method, and to compare their abilities to predict. The desirable bituminous mix properties include stability, density, durability, flexibility, resistance to skidding and workability during construction. Pdf the effects of marshall and superpave design methods on. Specimens are prepared in accordance with this method and tested for. Designmarshall method and this turkish standard 3720.
The marshall mix design method was originally developed by bruce marshall of the mississippi highway department in 1939. Sheikh edrees, comparison of marshall and superpave asphalt design methods for sudan pavement mix es, international journal of scientific and technical advancements. Jun 27, 2016 this is a tutorial video for students of civil engineering of marshal stability and flow test. Pdf due to the heavy vehicle traffic and the climatic conditions, the asphalt concrete deteriorates. From basics to advanced fundamentals of asphalt mix design by marshall method. Study on marshall design parameters of porous asphalt. Unit,weight the unit weight is the total of an asphaltic mixture, including all aggregate and asphalt, in pounds per cubic foot. Disadvantages impact method of compaction does not consider shear strength load perpendicular to compaction axis. The marshall stability and flow test provides the performance prediction measure for the marshall mix design method. Instead of the impact of weighted hammer blows, the superpave gyratory compactor sgc uses a hydraulically powered kneading system with an action much closer to actual field densification of the mix. Comparison of marshall and superpave asphalt design methods for sudan pavement mixes article pdf available january 2016 with 4,792 reads how we measure reads. Some types of bituminous mixes are also used in base coarse.
The manual is a practical guide based on proven technologies, incorporating the most current information in 2014. Mix characteristics and behavior when a sample of hma is prepared in the laboratory, the hma is analyzed to determine the probable performance in a pavement structure. Stability is defined as resistance of the paving mix. The superpave mix design method differs from the marshall mix design methods by using.
It was observed that the modified marshall method satisfies the mix properties such as marshall stability, flow and indirect tensile strength and can be used for. Round metal pans for mixing aggregates and bitumen. Chapter 4 marshall mix design and analysis school of engineering, cochin university of science and technology 49 specified in the astm standard astm d1559. This test method does not purport to address all of the safety. This section consists of a brief history of the marshall mix design method followed by a general outline of the actual method.
The basic concepts of the marshall mix design method were originally developed by bruce marshall of the mississippi highway department around 1939 and then refined by the us army. Marshall design method advantages attention on voids, strength, durability inexpensive equipment. The marshall method of mix design is intended both for laboratory design and field control of bituminous hotmix dense graded paving mixtures. This method also addresses the treatment of reclaimed asphalt pavement rap for mix design purposes section 7. This is preceded by the dry mix design discussed in the previous chapter. Pdf comparison of marshall and superpave asphalt design. Marshall method of mix design is the most popular one and is discussed. For the present work, the bituminous mix is designed using the marshall method and arrived at the volumetric properties.
The flow is measured as the deformation in units of 0. The main parameters of marshall design method are compaction work number of compactions and compaction temperature, i. There are areas in maryland where,due to the type of soil,it is not possible to attain 95% of dry weight density using the t180 method. However, the marshall method also has shortcomings and limitations, such as the difficulty in simulating the actual working conditions of a. 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. The stability portion of the test measures the maximum load supported by the test specimen at a loading rate of 50. Demonstration of test methods to measure height, bulk specific gravity, and stability and flow of 100mm diameter marshall asphalt specimens. The primary objective of bituminous mix design is to select aggregate gradation and asphalt binder content. In these areas the compaction requirements shall be 95% of the dry weight density as determined by aashto designation t99 method. This section briefly discusses the superpave mix design method. Wsdot uses the superpave mix design method also commonly called the gyratory mix design method.
A continuing problem in the design of bituminous pavements is the specification of the properties of the mix so that it will have sufficient stability to resist displacement under traffic. The marshall test can be conducted with two different types of equipment. You should be able to provide your student id number and your marshall email address, as well as your program and whether you are a distance student. What is marshall mix design for bituminous materials. Marshall mix design procedure the first step in the marshall mix design method is to prepare the samples as described below. Introduction qatar began designing asphalt pavement mixes with the marshall design method in the early 1990s. The 7 th edition of ms2 asphalt mix design methods marks the 56 th year of continuous publication of an asphalt institute mix design manual. At the end, ethical issues raised by the study have also been discussed and a path forward proposed. However, the marshall method also has shortcomings and limitations, such as the difficulty in simulating the actual. The mix design wetmix determines the optimum bitumen content. Compared to the marshall design method, superpave integrates material selection and mix design and uses an entirely different type of compaction. Superpave gyratory method washington asphalt pavement.
Astm d6927 15 standard test method for marshall stability. Chapter 2 design and control of bituminous mixtures using. Although superpave is recognized as a significant system in. The marshall method is today considered the standard method of asphalt mixture design for practical engineering applications. Marshall mix design method for asphaltic concrete an arizona method 1.
Pdf chapter 11 marshall method of asphaltconcrete mix. Comparison of asphalt mixtures designed using the marshall. Marshal test is extensively used in routine test programs for the paving jobs. Although hdot does not use the marshall method, it accepts marshall mix designs. The marshall mix design method can use any suitable method for estimating optimum asphalt content and usually relies on local procedures or experience. Asphaltic concrete mix design marshall method date. There are many methods available for mix design which vary in the size of the test specimen, compaction, and other test specifications. This test method does not purport to address all of the safety concerns associated with its use. This edition offers significantly expanded application and guidance relative to our previous mix design manuals. Bituminous mixes are used in the surface course of road and airfield pavements. This design procedure is based on the marshall method of design as detailed in the applicable documents section below. Use of marshall stability test in asphalt paving mix design c. Pdf comparative evaluation for mix design of marshall and. Chapters 9 through 11 are again generic for all dense graded mixes and design methods.
Properties considered in mix design superpave mix design. By using this method, engineering designers reap the benefits of its easy implementation and inexpensive equipment requirements. This section briefly discusses the superpave mix design method wapa pavement note on mix design. For answers to your academic advising questions, please call your college number below, monday through friday, 8am4. Exp 7 marshall method of mix design civil engineers pk. In this method, the resistance to plastic deformation of a compacted cylindrical specimen of bituminous mixture is.
Astm d1559 has standardized the marshall test procedures. Chapter 2 design and control of bituminous mixtures using a. Chapter 4 marshall mix design and analysis shodhganga. Most private laboratories use the marshall method because it is a proven method and requires relatively light, portable and inexpensive equipment. The mix design is conducted as per marshall method of mix design for 100 mm diameter specimen and ms2 guidelines are used for 150 mm diameter specimen modified marshall method. Like the hveem and marshall methods, the superpave method has been proven to produce quality hma from which longlasting pavements can be constructed. The bulk specific gravity of aggregates and the specific gravity of the asphalt cement are determined. The aggregate gradation should not meet the project specifications. Sep 29, 2016 marshall mix design procedure the first step in the marshall mix design method is to prepare the samples as described below. Marshall method of design as detailed in the applicable documents section below. General scope the department has established procedures for the design and control of bituminous concrete based on marshall method for more than 30 years. Ppt asphalt mix design marshall method rajib chattaraj. Use of marshall stability test in asphalt paving mix design.
Ms2 asphalt mix design methods asphalt institute bookstore. The main idea of the marshall mix design method involves the selection of the asphalt binder content with a suitable density which satisfies minimum stability and range of flow values. To compare between two mix design methods, marshall test was also investigated. The materials should meet the project specifications. Bituminous mix design by marshall method theory and scope. Each college at marshall university has its own advising process.135 705 95 1059 426 544 1394 1200 269 1307 1181 573 401 642 1453 1461 141 679 801 857 771 61 256 1029 739 1514 449 1352 522 169 783 755 663 738 1370 741 1400 734 686 511 213 1425 233 44 257 1458