Stone matrix asphalt sma is a tough, stable, rutresistant mixture. 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. Modification of stone matrix asphalt with nanosio2. Sma has been utilized in other european countries for more than two decades to provide higher rutting resistance as well as studded tyre wear.
Pdf modification of stone matrix asphalt with nanosio2. 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. Hma pavement mix type selection guide introduction background our nations roadway system is critical to our economy. 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. 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. It provides a deformationresistant, durable surfacing material, suitable for heavily trafficked roads. Experimental investigation of stone matrix asphalt mixtures.
Stone mastic asphalt seminar and ppt with pdf report. Sma stonematrix asphalt tac time available for compaction vca voids in coarse aggregate vfa voids filled with asphalt vma voids in mineral aggregate wma warmmix asphalt notice this material is disseminated under the sponsorship of the u. Theory and practice describes sma, from its origin through implementation, and explores various methods and design approaches. The mixtures of the mix group stone mastic asphalt are produced on the basis of hot bitumen. For ordinary sma, the use of regular asphalt cement together with fibrous material as a drainage inhibitor is sufficient.
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. For minimizing the cost and increasing the efficiency of roads, many different alternatives are used for improvement by using different waste materials. Stone matrix asphalt, ogfc open graded friction course, highmodulus hma, densegraded hma, hma with modified binders, and thinfriction lifts. 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. Sma has found use in europe, australia, the united states, and canada as a durable asphalt surfacing option for residential streets. 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. Brown and rajib basu mallick the presence of stoneonstone contact and a relatively low percentage of fine aggregate are two characteristics of stonematrix asphaltsma. A laboratory study on stone matrix asphalt using ground tire rubber the sma mixtures are designed to have high coarse aggregate content, high asphalt content, and high filler content. The asphalt rich binder provides sufficient mortar of. The use of stone matrix asphalt sma has continued to rise in the united states because of its ability to withstand heavy traffic without rutting. Method to ensure stoneonstone contact in stone matrix. Author links open overlay panel lekhaz devulapalli saravanan kothandaraman goutham sarang.
Stone mastic asphalt is mainly to be used for surface courses. There must be a proper stonetostone contact between the coarse aggregates of sma, and hence aggregate. Therefore, a condition survey was conducted of mixes that had been in service for several years to evaluate the longterm performance of sma and superpave projects. Hma pavements serve in a multitude of traffic and environmental conditions, demanding that the materials and. Brown and rajib basu mallick the presence of stone on stone contact and a relatively low percentage of fine aggregate are two characteristics of stone matrix asphalt sma. Furnish uncontaminated materials of uniform quality that meet the requirements of the. 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.
This work consists of the construction of a stone matrix asphalt wearing course mixture sma. 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. The coarse aggregate provides stone on stone contact for bearing and rut resistance. The stone matrix asphalt sma technical working group twg, composed of federal, state, and industry representatives, was formed in 1992.
Sumit thakur civil stone mastic asphalt seminar and ppt with pdf report. Stone matrix asphalt is a coarse graded rut resistant engineered hot mix asphalt surface layer. Performance of stone matrix asphalt pavements in citeseerx. The technology of asphalt materials and mixtures is discovered and mostly used in europe and north america. 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. A laboratory study on stone matrix asphalt using ground. Stone matrix asphalt sma is a hot mixture asphalt that was developed in germany in the late sixties. This ability is derived from a stoneonstone coarse aggregate skeleton. 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 sma is a gapgraded bituminous mixture which can be used in surface layer of high volume pavements. Basis for a holistic theory in medicine read online. In other words, only one method can be used at the same time in the same asphalt plant.
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. Stone matrix asphalt texas asphalt pavement association. Asphalt field engineer virginia department of transportation introduction. 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. That is designed to maximize deformation rutting resistance and durability by using a structural basis of stone on stone contact. The sma mixes have been placed exclusively on high volume, high speed highway segments. A performance baseline for stone matrix asphalt kevin k. Analyses of nearly sets of construction quality control test data and. Stone mastic asphalt seminar report, ppt, pdf for civil. For stone matrix asphalt stone matrix asphalt sma is a durable, stable, rutresistant hot mix asphalt hma consisting of two parts. Conference on stonematrix asphalt thank you to everyone who attended and participated in the conference. The sma stone matrix asphalt mixture is a gapgraded mix.
Stone mastic asphalt was developed in germany in the mid of 1960s and it has scatter throughout europe and the entire world in 1980s and 1990s respectively. 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. Mar 19, 2016 the time is right for a comprehensive resource that collects, examines, and organizes this information and makes it easily accessible. 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 sma 1 1 1st international conference on stone matrix asphalt sma atlanta, georgia november 6th. Mixtures utilizing bitumen emulsion and bituminous materials based on in situ recycling are not covered by this standard.
Because the aggregates are all in contact, rut resistance relies on aggregate properties rather than asphalt binder properties. The recommendations for mix design, plant production, paving compaction, and quality assurance discussed in this report should provide the guidance necessary to maximize the potential for sma and minimize production problems. Superseding ufgs 32 17 stone matrix asphalt sma for airfield pavements. North dakota asphalt conference april 2, 20 bismarck, nd. The mixture has higher concentrations of coarse aggregates, providing strength and rut resistance to the mixture, and higher asphalt content giving durability. A compilation and distillation of the latest knowledge available, stone matrix asphalt. Ogfc, stone matrix asphalt sma, and fine and coarsegraded dense mixes. Under these conditions, conventional dense grades mixes are not rut resistant.
Evaluation of rejuvenators effectiveness on the reclaimed. Conference on stone matrix asphalt thank you to everyone who attended and participated in the conference. Easy maintenance hma pavements are easy to preserve and maintain because the top layer can be milled off for recycling, then replaced with a new, durable pavement. Assessment of coconut shell charcoal as filler in stone. 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. Sma is generally more expensive than a typical densegraded hma about 20 25 percent. Evaluation of rejuvenators effectiveness on the reclaimed asphalt pavement incorporated stone matrix asphalt mixtures. These objectives are usually achieved with a gapgraded aggregate coupled with fiber or. 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. The need for incorporation of reclaimed asphalt pavement rap in the stone matrix asphalt sma mixtures is becoming a priority in the pavement industries. 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. Sma stone matrix asphalt tac time available for compaction vca voids in coarse aggregate vfa voids filled with asphalt vma voids in mineral aggregate wma warmmix asphalt notice this material is disseminated under the sponsorship of the u. Explore stone mastic asphalt with free download of seminar report and ppt in pdf and doc format. Asphalt field engineer virginia department of transportation introduction an expanded deployment of stone matrix asphalt stone matrix asphalt sma represents an americanized version of.
Stone mastic asphalt can also be used for regulating and binder courses. Senior research scientist virginia transportation research council trenton m. The hma pavement mix type selection guide provides designers with methods for. Download pdf 49 the importance of stone mastic asphalt. Stone matrix asphalt pavement is hot mix asphalt consisting of two parts a coarse aggregate skeleton and a binder rich mortar. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The stone matrix is a revolutionary tool for the decorative vertical concrete market. That is designed to maximize deformation rutting resistance and durability by using a structural basis of stoneonstone contact. Stone matrix asphalt sma and superpave represent relatively new mix design technologies in the united states. To develop this document, information was obtained from a combination of literature. In the years since the development and subsequent success of stone matrix asphalt sma, a plethora of articles have emerged, scattered throughout various publications.
While this coarse aggregate skeleton is imperative for sma to perform, no quantitative method exists to measure it. The last published pdf version of this section is available in the previous release in the ufgs archives. Although it is known that the stone skeleton in sma is primarily. Hot mix asphalt hma pavements constitute a large part of our nations surfaced roads. Asphalt field engineer virginia department of transportation robert a. Study of stone matrix asphalt for the flexible pavement.
Evaluation of stone on stone contact in stone matrix asphalt e. This tool allows anybody to dive into the world of vertical concrete with confidence. Evaluation of stoneonstone contact in stonematrix asphalt e. The unified facilities criteria ufc system is prescribed by milstd 30 07 and provides planning, design, construction, sustainment, restoration, and modernization criteria, and applies. 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. 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. Evaluation of stoneonstone contact in stonematrix asphalt. This page contains stone mastic asphalt seminar and ppt with pdf report. A demonstration of stone matrix asphalt mix designs using high polish value crushed stone introduction historically, the fort worth district has used either lightweight aggregate or a crushed gravel from reeves county, texas, when a polish value of 3s minimum was required for a hot mix.
It also provides useful information for design engineers, laboratory personnel, and project. Pdf the importance of stone mastic asphalt in construction. In stone mix asphalt is the gap graded mixture consisting of a stone or slag as a coarse aggregate, different binders are used natural or artificial as stabilizers and high bitumen content. 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. Spesifikasi stone matrix asphalt sma 1 ruang lingkup spesifikasi ini menetapkan ketentuan bahan dan ketentuan campuran stone matrix asphalt sma untuk lapis permukaan atau lapis aus, baik yang menggunakan aspal pen 60 s. Brown introduction stone matrix asphalt sma, which has been used in europe for approximately 20 years, was first developed to provide resistance to abrasion by studded tires.
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. Evaluation of stonematrix asphalt mixtures containing. The maryland state highway administration msha has constructed over 85 stone matrix asphalt sma projects totaling over 0 lane miles since 1992. These objectives are usually achieved with a gapgraded aggregate coupled with fiber or polymer modified, and high asphalt content matrix 1. 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. The rap offers several benefits such as the reduction in usage of bitumen, and natural aggregates, and reduction in the landfills, emission into the environment and cost. Laboratory performance of stone matrix asphalt mixtures.
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