Stone matrix asphalt sma is a gapgraded asphalt mixture performing better than conventional densegraded mixtures. Effect of coarse aggregate content on stone matrix asphalt. Study of stone matrix asphaltsmausing different fillers akash ka. The mortar is a mixture of asphalt binder, mineral filler. Asphalt field engineer virginia department of transportation introduction an expanded deployment of stone matrix asphalt stone matrix asphalt sma represents an americanized version of. Theory and practice temperatures of asphalt mixtures.
In 2003, virginia launched an expanded commitment to stone matrix asphalt sma. Draindown of asphalt cement was found to be affected significantly by type of filler, the percentage passing the 4. Pdf this study applied conventional laboratory tests and advanced imaging techniques to. Item 346 stonematrix asphalt the texas department of. Brown director national center for asphalt technology auburn university, alabama sponsored by national asphalt pavement association napa building 5100 forbes blvd. A compilation and distillation of the latest knowledge available, stone matrix asphalt. Because the aggregates are all in contact, rut resistance relies on aggregate properties rather than asphalt binder properties.
Stone matrix asphalt sma has proven to be a rutresistant and. Asphalttreated permeable base stonematrix asphalt sma sand asphalt nominal maximum aggregate size less than 9. Keywords stone matrix asphalt stonetostone contact drain down aggregate gradation nominal maximum aggregate size 1 introduction stone matrix asphalt sma is a gapgraded hma developed in germany in the 1960s, to resist the wear and tear on pavements. Samples should be prepared with the same method as applied for qualification tests of a mixture according to a formula en 10820. North dakota asphalt conference april 2, 20 bismarck, nd. Certified that this thesis entitled influence of additives on the characteristics of stone matrix asphalt, submitted to cochin university of science and technology, kochi for the award of degree of doctor of philosophy, under the faculty of engineering, is the bonafide research carried out by smt. The stone matrix is a revolutionary tool for the decorative vertical concrete market. 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.
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. On november 57, 2018, the national asphalt pavement association with support from the federal highway administration will host the 1st international conference on stone matrix asphalt sma in atlanta, georgia. The stone matrix asphalt sma technical working group twg, composed of federal, state, and industry representatives, was formed in 1992. Stone matrix asphalt intrinsic benefits 3040% less rutting than conventional mixes 35 times greater fatigue life europeans experience 3040% longer. The calculated values mathematically blend test results from the raw. Stone matrix asphalt sma is a hot mixture asphalt that was developed in germany in the late sixties. The high stone content of at least 70% ensures stone on stone contact after compaction. 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. Experimental investigation of stone matrix asphalt. Stone matrix asphalt sma is a gapgraded bituminous mixture which can be used in surface layer of high volume pavements. Stone mastic asphatt australian asphalt pavement association. Comparison of stone matrix asphalt mixtures prepared in. Ogfc, stone matrix asphalt sma, and fine and coarsegraded dense mixes. Certified that this thesis entitled influence of additives on the characteristics of stone matrix asphalt, submitted to cochin university of science and technology, kochi for the award of degree of doctor of philosophy, under the faculty of engineering, is the bonafide research carried out by.
Moore introduction background stone matrix asphalt sma has been used for over a decade in the united states as a premium asphalt mixture to resist rutting and cracking on many heavy traffic roadways. Conference on stone matrix asphalt thank you to everyone who attended and participated in the conference. 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. Pdf characterisation of stone matrix asphalt mixtures. Stone matrix asphalt, opengraded friction course, porous pavement. Designing and constructing sma mixtures illinois asphalt. Study of stone matrix asphalt for the flexible pavement. It contains a high concentration of coarse aggregates forming stoneonstone. 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. This tool allows anybody to dive into the world of vertical concrete with confidence. Stone matrix asphalt sma specification and implementation.
Materials special provision, section 02744 stone matrix. Keywords stone matrix asphalt stone to stone contact drain down aggregate gradation nominal maximum aggregate size 1 introduction stone matrix asphalt sma is a gapgraded hma developed in germany in the 1960s, to resist the wear and tear on pavements caused by studded tyres. Pdf stone matrix asphalt using aggregates modified with. Five stone matrix asphalt sma mixtures designed to have different coarse aggregate. 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. Largestone mixes contain coarse aggregate with a nominal maximum size larger than 25 mm 1 in. Laboratory performance of stone matrix asphalt mixtures with. There must be a proper stonetostone contact between the coarse aggregates of sma, and hence aggregate.
These objectives are usually achieved with a gapgraded aggregate coupled with fiber or. The aggregate blends were tested for density, abrasion, crushing, water absorption and polishing before used in sma design. Sma has been utilized in other european countries for more than two decades to provide higher rutting resistance as well as studded tyre wear. Project organization, mix design, and quality control. Effect of flat and elongated aggregate on stone matrix asphalt performance.
General scope the department has established procedures for the design and control of stone matrix asphalt sma. This report documents the first stone matrix asphalt sma pavement constructed on the. The mixture has higher concentrations of coarse aggregates, providing strength and rut resistance to the mixture, and higher asphalt content giving durability. Laboratory study on draindown of asphalt cement in stone. Theory and practice describes sma, from its origin through implementation, and explores various methods and design approaches. Asphalt field engineer virginia department of transportation robert a. The technology of asphalt materials and mixtures is discovered and mostly used in europe and north america. 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. Furnish uncontaminated materials of uniform quality that meet the requirements of the. Analysis of stone matrix asphalt sma with interactive. Sma in wisconsin crusher adjustments plant adjustments design and testing paving operations rolling patterns compaction. The hma pavement mix type selection guide provides designers with methods for. Stone mastic asphalt seminar report, ppt, pdf for civil. Large stone mixes contain coarse aggregate with a nominal maximum size larger than 25 mm 1 in.
Stone matrix asphalt pavement is hot mix asphalt consisting of two parts a coarse aggregate skeleton and a binder rich mortar. Laboratory testing of the sma surface mixtures was performed to determine volumetric. Stone matrix asphalt was originally developed in europe as in impervious highly durable wearing surface for. Stone matrix asphalt january 28, 2005 ncaupg meeting lafayette, in. Pdf modification of stone matrix asphalt with nanosio2. 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. Study of stone matrix asphaltsmausing different fillers. Stuart the stone matrix asphalt sma technical working group twg, com posed of federal, state, and industry representatives, was formed in 1992.
The smadesign concept relies on stoneonstone contact to provide strength and a rich mortar binder to provide durability. The properties of microsurfacing is said to enhance, protect andor rehabilitate paved surfaces. 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 mix was found to be better rut resistant and durable than conventional dese graded mixtures and this prompted many countries in europe and united states us to adopt. The smadesign concept relies on stone on stone contact to provide strength and a rich mortar binder to provide durability. 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. Stone matrix asphalt sma is a gap graded bituminous mixture with high concentration of coarse aggregates and higher mastic bitumen and filler content. 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. There must be a proper stone to stone contact between the coarse aggregates of sma, and hence aggregate gradation. This is due to the gap graded structure of sma and. Stone matrix asphalt specification and implementation. Furnish uncontaminated materials of uniform quality that meet the requirements of the plans and specifications. Theoretical maximum density tmd, also called rice density the theoretical maximum density of an hma if it contained zero air voids.
The guide combines the selection criteria for these different pavement mix types into one document. 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. Laboratory performance of stone matrix asphalt mixtures. Sma, stone matrix asphalt, hot mix asphalt, stoneonstone contact, mixture design, plant production. Blend by volume if the bulk specific gravities of the class a and b aggregates differ by more than 0. Stone matrix asphalt texas asphalt pavement association. A demonstration of stone matrix asphalt mix designs using high polish value crushed stone departmental research texas department of transportation dht41 research and technology transfer section, p. Conference on stonematrix asphalt thank you to everyone who attended and participated in the conference. Stone matrix asphalt sma is regularly and successfully used for surface courses in many countries. A discontinuity in the sma aggregate blend gradation gap gradation.
Stone matrix asphalt is a coarse graded rut resistant engineered hot mix asphalt surface layer. Stone matrix asphalt sma is a gap graded bituminous mixture with high concentration of coarse aggregates and high mastic content. Hma pavement mix type selection guide transportation. Asphalt treated permeable base stone matrix asphalt sma sand asphalt nominal maximum aggregate size less than 9. Evaluation of stonematrix asphalt mixtures containing. Under these conditions, conventional dense grades mixes are not rut resistant. These objectives are usually achieved with a gapgraded aggregate coupled with fiber or polymer modified, and high asphalt content matrix 1. Asphalt field engineer virginia department of transportation introduction an expanded deployment of stone matrix asphalt stone matrix asphalt sma represents an americanized version of german asphalt technologies. Stone matrix asphalt sma is a gapgraded blend which possesses a high deliberation coarse aggregate framework with stonetostone contact. The sma twg developed the sma model material and con struction guidelines. Products and procedures for laying and compacting a surface course of one or more layers of fiber stabilized sma comprised of aggregate, asphalt binder, lime, and other additives. Determination of textural depth for stone matrix asphalt.
Experience with stone matrix asphalt in the united states by e. It provides a deformationresistant, durable surfacing material, suitable for heavily trafficked roads. The time is right for a comprehensive resource that collects, examines, and organizes this information and makes it easily accessible. In this study sma was designed using two different local aggregates blending ratios. This report documents activities performed as part of pennsylvania department of transportation penndot project 040109. 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. Design and control of stone matrix asphalt sma mixtures 1. Stone matrix asphalt sma 1 1 1st international conference on stone matrix asphalt sma atlanta, georgia november 6th. Stone matrix asphalt sma is a tough, stable, rut resistant mixture that relies on stonetostone contract for its strength and a rich mortar binder for its durability. These objectives are usually achieved with a gapgraded aggregate coupled with fiber andor polymermodified, high asphalt content matrix. A performance baseline for stone matrix asphalt vdot. The sma stone matrix asphalt mixture is a gapgraded mix. Pdf stone matrix asphalt using aggregates modified with waste.
In addition to meeting minimum aggregate quality requirements, the proper aggregate grading must be used if the hma is to perform satisfactorily in. Sma, also called stone mastic asphalt, was developed in germany in the 1960s to. As seen in figure 11a, these mixes have a higher percentage of coarse aggregate than the conventional mixes larger than. Chapter 2b design and control of stone matrix asphalt sma. In marshall mix design, only 50 blows are given to compact sma samples, compared to 75 blows in the case of conventional dense graded mixtures. Notify the engineer before changing any material source or. Stone matrix asphalt sma premium surface mix stoneonstone contact voids filled asphalt filler long lasting minimize rutting minimize cracking. Sma is a hotmix asphalt consisting of two parts, a coarse aggregate skeleton and a rich asphalt binder mortar. Evaluating georgias compaction requirements for stone matrix asphalt mixtures randy c. Stone matrix asphalt sma is a tough, stable, rutresistant mixture that relies on stone on stone contact to provide strength and a rich mortar binder to provide durability 1. Effect of coarse aggregate content on stone matrix asphalt rutting and drain down walaa s. Fundamentally, an sma paving mixture relies on a stoneonstone aggregate. Construct one or more courses of a stonematrix asphalt sma a special, hotmixed, hotplaced asphalt mixture upon the prepared foundation according to these specifications. Stone matrix asphalt sma has proven to be a rutresistant and costeffective surface material in europe for the past 20 years.
Sma has found use in europe, australia, the united states, and canada as a durable asphalt surfacing option for residential streets. 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. To develop this document, information was obtained from a combination of literature. For more than two decades, stone matrix asphalt sma, called stone mastic asphalt. 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. The use of stone mastic asphalt sma as a surfacing for heavily trafficked. Construct a 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. The voids of the structural matrix are filled with high viscosity bituminous mastic. 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. Stone matrix asphalt, opengraded friction course, porous. Sma in wisconsin crusher adjustments plant adjustments design and testing paving. The high stone content of at least 70% ensures stoneonstone contact after compaction. Explore stone mastic asphalt with free download of seminar report and ppt in pdf and doc format. Because of its success in europe, the united states of america usa also launched the construction of sma pavements in some states.
Experimental investigation of stone matrix asphalt mixtures. 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. Stone mastic asphalt is characterised by its high stone content which forms a gapgraded skeletonlike stone structure. It contains a high concentration of coarse aggregates forming stone on stone. This work consists of the construction of a stone matrix asphalt wearing course mixture sma.
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