There are a wide variety of hot mix asphalt compositions used in maryland that vary from fine to coarse in size and gradation. These requirements include testing with the microdeval abrasion apparatus aashto t 327 and determination of the aggregate degradation in accordance with itm 220. Additives are generally used in sma mix to prevent drain down of binder. Effect of coarse aggregate morphology on the mechanical.
Manual for construction and supervision of bituminous. An asphalt content that produces 34 percent air voids in laboratory compacted samples is desirable. Layer coefficients for new and reprocessed asphaltic mixes. The hma pavement mix type selection guide provides designers with methods for. Stone mastic asphalt sma, also called stonematrix asphalt, was developed in germany in the 1960s with the first sma pavements being placed in 1968 near kiel. May 01, 2007 read a laboratory study on stone matrix asphalt using ground tire rubber, construction and building materials on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Stone matrix asphalt sma is a tough, stable, rutresistant mixture that relies on stoneonstone contact to provide strength and a rich mortar binder to provide durability 1. The course content is contained in the following pdf file. Highway agencies have been using increasing amounts of reclaimed and recycled materials over the past number of years, as asphalt prices have continued to rise. Effect of coarse aggregate morphology on the mechanical properties of stone matrix asphalt article in construction and building materials 152.
Abstract stone matrix asphalt sma was originally developed in europe as an. This course includes a multiplechoice quiz at the end, which is designed to enhance the understanding of the. A performance baseline for stone matrix asphalt vdot. Haddock introduction stone matrix asphalt sma is a type of hot mix asphalt hma that has been used in europe for over 20 years to resist studded tire wear and to provide better rutting resistance.
Stone matrix asphalt in colorado donna harmelink, tim aschenbrener and ken wood 1. Furthermore,maryland hot mix asphalt mixtures utilize different aggregates or combinations of aggregates,the principal types being crushed stone,sand,gravel,bank run gravel,roofing shingles and recycled asphalt pavement. Stone matrix asphalt texas asphalt pavement association. Stone mastic asphalt sma, also called stone matrix asphalt, was developed in germany in the 1960s with the first sma pavements being placed in 1968 near kiel. Specific mix design objectives stability permanent deformation resistance durability.
Vdot web file users pdf may obtain more information and other resources by downloading the accompanying zip file compressed word. Construct a hotmix asphalt hma pavement layer composed of a compacted stonematrix asphalt sma or stonematrix asphalt rubber smar mixture of aggregate, asphalt binder, and additives mixed. A study was conducted to evaluate the potential of stone matrix asphalt sma for. Stone matrix asphalt sma is a gapgraded hot mix asphalt with a high percentage of coarse aggregate and a high asphalt content. It provides a deformationresistant, durable surfacing material, suitable for heavily trafficked roads. Historically oregon has specified gradations for densegraded hot mix asphalt concrete hmac using a combination of broadband limits and recommended ideal gradations. Five stone matrix asphalt sma mixtures designed to have different coarse aggregate skeletons were investigated to establish relationships between the vca. Sma is a gap graded bituminous mixture that maximizes coarse aggregates content in the mix which provides better stoneonstone contact. Study of stone matrix asphaltsmausing different fillers akash ka. Division ii materials special provision copied notes spcns, special provision sps and supplemental. Sma is generally more expensive than a typical densegraded hma about 20 25 percent.
Pdf characterisation of stone matrix asphalt mixtures. Conference on stone matrix asphalt thank you to everyone who attended and participated in the conference. The pavement mix types targeted are opengraded friction courses ogfc, stone matrix asphalt sma, and fine and coarsegraded dense mixes. The unified facilities criteria ufc system is prescribed by milstd 30 07 and provides planning, design, construction, sustainment, restoration, and modernization criteria, and applies. Pdf development of a mixture design procedure for stone matrix. This paper proposes the use of fiber extracted from refrigerator door panels ferd and waste plastic in bituminous mixes for road construction. The following downloads are sections to the materials manual of instruction csi english version in pdf format. The concept of stone matrix asphalt posted by admin on 11 11 15 for more than two decades, stone matrix asphalt sma, called stone mastic asphalt in europe, has been taking over the global asphalt paving market at a remarkably high speed. Stone matrix asphalt sma premium surface mix stoneonstone contact voids filled. Stone matrix asphalt pavement is hot mix asphalt consisting of two parts a coarse aggregate skeleton and a binder rich mortar.
Stone matrix asphalt sma specification and implementation. Many years have passed since the beginning of stone matrix asphalts smas world. The high stone content of at least 70% ensures stoneonstone contact after compaction. Demonstration of the placement of stone matrix asphalt in. Certified hot mix asphalt producer program itm 58316p effective for lettings prior to october 1, 2016 1. Sma, also called stone mastic asphalt, was developed in germany in the 1960s to provide heavily trafficked roads with a durable, rutresistant wearing course using a gapgraded aggregate structure and a modified asphalt binder at elevated asphalt contents. An introduction to hot mix asphalt for pavement a pdh. This tool allows anybody to dive into the world of vertical concrete with confidence. Pdf the importance of stone mastic asphalt in construction. The recent adoption of superpave and stone matrix asphalt sma technology has. Ogfc, stone matrix asphalt sma, and fine and coarsegraded dense mixes. Evaluation of fieldproduced warm mix stone matrix asphalt wmasma mixtures.
Stone matrix asphalt, opengraded friction course, porous. Study of stone matrix asphaltsmausing different fillers. Stone matrix asphalt sma is a gap graded bituminous mixture that maximizes coarse aggregates content in the mix which provides better stone on stone contact. One of the more promising was a surface mix, stone matrix asphalt sma. Stone matrix asphalt sma is a hot mixture asphalt that was developed in germany in the late sixties. If the asphalt content is excessive it will tend to push the aggregate apart and prevent stone on stone contact. They are held together by a rich matrix of mineral filler, fiber or polymer as stabilizers in a thick asphalt film. That is designed to maximize deformation rutting resistance and durability by using a structural basis of stoneonstone contact. Experimental investigation of stone matrix asphalt. Study of stone matrix asphalt for the flexible pavement. The voids of the structural matrix are filled with high viscosity bituminous mastic. The smadesign concept relies on stoneonstone contact to provide strength and a rich mortar binder to. Stone matrix asphalt sma premium surface mix stoneonstone contact voids filled asphalt filler long lasting minimize rutting minimize cracking.
Evaluation of stonematrix asphalt mixtures containing. Shape file ground shot coordinates before filtering after filtering. A list of layer coefficients is proposed for pavement design. The recent adoption of superpave and stone matrix asphalt sma technology has created new criteria for selecting gradations. Stone mastic asphalt seminar report, ppt, pdf for civil. Evaluation of stonematrix asphalt mixtures containing recycled. A laboratory study on stone matrix asphalt using ground tire. The results of the asphalt materials did not show that there are significant differences in resilient modulus of asphalt mixtures tested. North dakota asphalt conference april 2, 20 bismarck, nd. Stone matrix asphalt is a coarse graded rut resistant engineered hot mix asphalt surface layer. Hma pavements serve in a multitude of traffic and environmental conditions, demanding that the materials and.
Layered pavement design start with foundation but also start with the end in mindthe wearing course. In other words, only one method can be used at the same time in the same asphalt plant. Sma is the typical gapgraded mixture used in virginia that is intended to maximize rutting resistance and durability wi. For all surface mixes, except where otherwise noted, no more than 5 percent of all aggregate retained on the no. Sma has found use in europe, australia, the united states, and canada as a durable asphalt surfacing option for residential streets.
Comparison of shear strength characteristics of stone matrix asphalt mixture with waste plastics and polypropylene bindu c s 1 and beena k s the triaxial test measures the mix stability in shear strength and gave better information for field performance prediction. Aggregates used for stone matrix asphalt mixtures are required to meet the requirements of as aggregates in accordance with section 904. These objectives are usually achieved with a gapgraded aggregate coupled with fiber or polymer modified, and high asphalt content matrix 1. It is composed of a strong aggregate skeleton, and a binder mastic composed of a high asphalt cement content, a cellulose or mineral fiber and high percentage of mineral filler.
The importance of stone mastic asphalt in construction article pdf available in electronic journal of geotechnical engineering 17. Abstract stone matrix asphalt sma is a gap graded mix and contains a high concentration of coarse aggregate. Because the aggregates are all in contact, rut resistance relies on aggregate properties rather than asphalt binder properties. The sma stone matrix asphalt mixture is a gapgraded mix. Designing and constructing sma mixtures illinois asphalt. Lynn introduction background stone matrix asphalt sma is a type of hot mix asphalt hma consisting of a coarse aggregate skeleton and a high binder content mortar. The stresses acting on the specimen simulate pavement stresses. Performance of stone matrix asphalt and asphaltic concrete. The technology of asphalt materials and mixtures is discovered and mostly used in europe and north america. Stone matrix asphalt sma 1 1 1st international conference on stone matrix asphalt sma atlanta, georgia november 6th. Experimental investigation of stone matrix asphalt mixtures.
Fundamentally, an sma paving mixture relies on a stoneon. The guide combines the selection criteria for these different pavement mix types into one document. Furnish uncontaminated materials of uniform quality that meet the requirements of the. Stone matrix asphalt sma is a gapgraded hma figure 1 that is designed to maximize deformation rutting resistance and durability by using a structural basis of stone on stone contact figures 26. This study aims to investigate the feasibility of utilizing steel slag aggregates in stone matrix asphalt sma mixtures. Stone matrix asphalt pavement is hot mix asphalt consisting of two parts a coarse aggregate. The stone matrix is a six piece template pattern system that is completely interchangeable with its partner pieces, top and bottom and end to end, which creates a different group of. Effect of flat and elongated aggregate on stone matrix asphalt performance 83. Association of asphalt paving technologists, volume 66, 1997. Hma pavement mix type selection guide introduction background our nations roadway system is critical to our economy. Utility location matrix download utility location matrix. Read a laboratory study on stone matrix asphalt using ground tire rubber, construction and building materials on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Construct a hotmix asphalt hma pavement layer composed of a compacted stone matrix asphalt sma or stone matrix asphalt rubber smar mixture of aggregate, asphalt binder, and additives mixed hot in a mixing plant. Hot mix asphalt hma pavements constitute a large part of our nations surfaced roads.
Asphalt rubber methods of adding rubber to asphalt wet process rubber is added to the liquid asphalt binder before being mixed at the hot mix asphalt plant i. Construct a hotmix asphalt hma pavement layer composed of a compacted stonematrix asphalt sma or stonematrix asphalt rubber smar mixture of aggregate, asphalt binder, and additives mixed hot in a mixing plant. Stone mastic matrix asphalt sma midsize aggregate missing or reduced stone matrix asphalt open graded friction course dense mix. Construct a pavement layer composed of a compacted stonematrix asphalt sma or stonematrix asphalt rubber smar mixture of aggregate, asphalt binder, and additives mixed hot in a mixing plant. The stone matrix is a six piece template pattern system that is completely interchangeable with its partner pieces, top and bottom and end to end, which creates a different group of stones each time a tool edge meets a different edge. Highway research project 933, a mix design manual for hot mix asphalt. Stone matrix asphalt specification and implementation. Fundamentally, an sma paving mixture relies on a stone on. It is made up of a mixture of crushed coarse and fine aggregates, mineral filler, asphalt cement and a stabilizer for the binder, such as polymer or fibres. The high asphalt content produces a mixture that is easily compacted and that should be durable. Study of stone matrix asphalt for the flexible pavement ijedr. Student 2assistant professor 3adjunct professor 1,2,3department of civil engineering 1,2,3parul institute of engineering and technology abstractthere are three major types of asphalt surfacing. Font resource file 1 download font resource file 1 rsc font resource file 2 download font resource file 2. A demonstration of stone matrix asphalt mix designs using high polish value crushed stone by george l.
The work shall be in accordance with these specifications and shall conform to the lines, grades, thicknesses, and typical crosssections shown on the plans or established by the engineer. Mixtures produced shall be qcqa hma in accordance with 401, hma in accordance with 402, and stone matrix asphalt. Also explore the seminar topics paper on stone mastic asphalt with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. All of the customer reference material for the illinois tollway. This work consists of the construction of a stone matrix asphalt wearing course mixture sma. Because of its success in europe, the united states of america usa also launched the construction of sma pavements in some states. The effect of modification of bituminous mixes like stone matrix asphalt sma and asphalt concrete ac with ferd and processed waste plastic in granular form was studied. The reason for making sma is due to having high skid resistance to reduce wearing courses by studded tires of vehicles 2. A laboratory study on stone matrix asphalt using ground. Stone matrix asphalt or sma mixtures are typically used as a surface mix or intermediate layer in the pavement structure on high volume or high demand roadways. The standard sma mixture contains pg 7622 and fibers, and is recommended for the vast majority of applications where sma is used or desired and when placed as an overlay on a pavement that has a high amount of cracking. Stone matrix asphalt, opengraded friction course, porous pavement. Conference on stonematrix asphalt thank you to everyone who attended and participated in the conference. Sma has been utilized in other european countries for more than two decades to provide higher rutting resistance as well as studded tyre wear.
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