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