Introduction of stone mastic asphalt sma in ontario. Such conformity shall be established in accordance with bs en 108206 and bs en 10821. A bitumen rich mastic mortar binds the aggregate skeleton together, resulting in toughness and excellent durability. Stone mastic asphalt wearing course residential streets and other light traffic applications main roads and highways 7 10, 14 fine gap graded asphalt wearing course foot traffic and residential streets 7, 10 open graded asphalt wearing course highways and freeways ultra thin asphalt urban and rural arterials 10, 14 10. Stone mastic asphalt sma provides a deformation resistant, durable, surfacing material, suitable for heavily trafficked roads. Stone mastic asphalt is a gapgraded bituminous mixture which contains high proportions of coarse aggregate and filler. Stone mastic asphalt sma is a gapgraded, highly textured and durable surface mix with a much higher percentage of stone and more asphalt cement than conventional hma advantages of sma over conventional hma are. 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. Copyright australian asphalt pavement association 2000. Details of the location and extent of asphalt work are either summarised at annexure 502a, or are shown on the drawings.
Stone mastic asphalt structure of asphalt mixtures. The stone mastic asphalt sma described within this specification ts2010 conforms to bs en 1085 where applicable. Introduction of stone mastic asphalt sma in ontario author. Jan 21, 2017 introduction stone mastic asphalt sma, otherwise known as stone matrix asphalt split mastic asphalt, was developed in germany in the mid of 1960s and it has spread throughout europe and across the world in 1980s and 1990s respectively. Evaluation of fatigue life of crmreinforced sma and its. Stone mastic as phalt has a comparable good dura bility and stability like gussasphalt but can be transported and paved likeasphalt concrete. The original purpose was to provide a surfacing that offered maximum resistance to.
Stone matrix asphalt sma, also called stone mastic asphalt, is a durable and rutresistant asphalt mixture that relies on stoneonstone contact to offer strength. General comments stone mastic asphalt gussasphalt asphalt concrete basic construction according to the definition found in the ztv asphalt stb, stone mastic. Sma must be designed and manufactured in accordance with the. Surface durability binderrich and voidless mortar 5. Material and construction requirements for stone mastic asphalt 3. The term asphalt is used in this publication and unless accompanied by a descriptor for example asphalt concrete ac, hot rolled asphalt hra or stone mastic asphalt sma, is applied in its generic sense to refer to the range of mixtures used in the uk. Effects of graphite on mechanical properties of stone. Stone mastic asphalt was developed in germany in the 1960s. Stone mastic asphalt is characterised by its high stone content which forms a gapgraded skeletonlike stone structure. Stone mastic asphalt seminar and ppt with pdf report. Specification clause references within this document are included without a prefix e. Stone mastic asphalt sma is a gapgraded mix laid between 30mm and 40mm thickness. Approaching 2010, more frequent occurrence of rutting. It may be manufactured using a polymer modified binder pmb, giving the aggregate skeleton additional strength.
It is promoted primarily for use as a surfacing course with relatively high surface texture, low permeability and a high resistance to rutting. Skid resistance aggregate type design of surface texture 2. Stabilizing additives are needed in the mastic which is rich in. Ts 1151 material specification for superpave and stone mastic. It provides guidance on skid resistance, types of seal treatments below sma, tie in to existing asphalt and properties of sma.
The high stone content of at least 70% ensures stone on stone. Sma otherwise known as split mastic asphaltstone mastic asphaltstone matrix asphalt was developed in germany in the late 1960s. The voids of the structural matrix are filled with high viscosity bituminous mastic. Road trials of stone mastic asphalt and other thin surfacings. Baran gritting for improved early life skid resistance of. Sma has found use in europe, australia and the united states as a durable asphalt surfacing option for residential streets and highways. The history of use of this material dates back some 30 years ago, and like every product stone mastic asphalt needs to be modified and adapted to conform modern materials and manufacture, as well as suit the various local conditions. Sma otherwise known as split mastic asphalt stone mastic asphalt stone matrix asphalt was developed in germany in the late 1960s.
Sma is used in the construction of new roads and overlaying existing roads and offers superior durability and resistance to deformation. Muni 1151 apr 2018 material specification for superpave and stone mastic asphalt the superpave mix designs shall be according to the requirements specified in tables 1, 2. Introduction stone mastic asphalt may be referred to by the acronym sma. 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. Pdf performance evaluation of crumb rubber modified stone. Baran gritting for improved early life skid resistance. The work under this specification consists of the supply and application of stone mastic asphalt hereafter referred to as asphalt as a pavement wearing course. Stone mastic matrix asphalt sma midsize aggregate missing or reduced stone matrix asphalt open graded friction course dense mix. Standard construction specifications division 40 asphalt surfacing revised 1108 section 40. Jenis campuran sma pada kedua negara banyak diaplikasikan karena memiliki ketahanan terhadap deformasi rutting serta memiliki beberapa keuntungan bagi pengguna jalan, yaitu diantaranya mempunyai ketahanan gelincir.
Casey and ciaran mcnally and amanda gibney and michael d. Results showed that fatigue life decreased with increase of the temperature. Problems of stone mastic asphalt use in north queensland. Performance evaluation of stone mastic asphalt sma using geopolymer as an asphalt modifier.
Development of stabilized stone matrix asphalt sma mixtures for improved pavement. The coarse texture tends to reduce the generation of spray during rain periods. Introduction stone mastic asphalt sma, otherwise known as stone matrix asphalt split mastic asphalt, was developed in germany in the mid of 1960s and it has spread throughout europe and across the world in 1980s and 1990s respectively. Indirect tensile test were conducted on cylindrical specimens made of standard and. The high stone content of at least 70% ensures stone on stone contact after compaction.
Stone mastic asphalt is a thin asphalt surfacing mix, which has very good rut resistance properties and excellent durability compared to standard asphalt. Asphalts are used in games and sport areas in two ways. Sma, stone matrix asphalt, hot mix asphalt, stoneonstone contact, mixture design. These objectives are usually achieved with a gapgraded aggregate coupled with fiber or polymer modified, and high asphalt content matrix 1. Effects of graphite on mechanical properties of stone mastic. Simply stated, sma is a gapgraded mix designed to direct stone on stone achieve contact. Stone mastic asphalt mixtures which were manufactured with pure and modified bitumen were aged in different time intervals in the oven. Sustainability free fulltext effect of palm oil clinker. Six groups of asphalt mixtures were prepared using different percentages of palm oil clinker content 0%, 20%, 40%, 60%, 80%, and 100%.
It referred to dense grade inherent structure which interlocked better to each other in comparison with stone mastic asphalt. Mastic asphalt was the first asphalt mixture used for road pavements. Specific mix design objectives stability permanent deformation resistance durability. The original impetus was to develop a mix with better resistance to studded tires. Stone mastic asphalt a temperamental diva from germany 11. Stone mastic asphaltmissouris experimental project using european. Fatigue characteristics of stone mastic asphalt mix. Designing and constructing sma mixtures illinois asphalt. To prevent pavement distresses there are various solutions such as adopting new mix designs or utilisation of asphalt additives. Stone mastic asphalt sma stone mastic asphalt is a gap graded mix, with a high binder content and a high proportion of coarse aggregate providing an interlocking stone on stone skeleton giving good deformation resistance. Stone mastic asphalt sma is widely used throughout the world as one of the preferred asphalt surfacings. Further, it was concluded that increasing the asphalt content. In addition to that, this type of mix asphalt needs higher asphalt content to keep the interlocked aggregate bound in intact. Small photographs show crosssection left through the sma layer and the surface texture right.
Visibility reduced reflection and spray innercity roads difficult in laying manually. Stone mastic asphalt seminar report, ppt, pdf for civil. Since then sma has been extensively used as the surfacing layer on heavily trafficked bituminous carriageways in hong kong. Mastic asphalt is one of the oldest construction products, and the oldest waterproofing and road surfacing material, in use for centuries. Stone mastic asphalt seminar report, ppt, pdf for civil engineering. These are dense graded asphalt, stone mastic asphalt and open graded asphalt.
Stone matrix asphalt sma, also called stone mastic asphalt, is a durable and. Stone mastic asphalt materials building engineering. Stone mastic asphalt may be referred to by the acronym sma. Pdf there are three major types of asphalt surfacings, characterized by a mixtureof bitumen and stone aggregate. Stone mastic asphalt sma is a stone on stone like skeletal structure of gap graded aggregate, bonded together by mastic, which actually is higher binder content, filler and fiber to reduce the binder drain. Pdf performance evaluation of crumb rubber modified. Also, hot mix asphalt had greater fatigue life compared to stone mastic asphalt. It provides a deformationresistant, durable surfacing material, suitable for heavily trafficked roads. Asphalt surfacing differ by the proportion of different size aggregate, the amount of bitumen added and the presence of other additives and material. It is composed of a strong aggregate skeleton, and a binder mastic composed of a high. This engineering road note is intended to provide guidance on the selection and use of stone mastic asphalt sma as a pavement wearing course. Therefore, marshall stability, indirect tensile stiffness modulus and indirect tensile fatigue tests were performed to bituminous mixtures modified with three different proportions of graphite by weight of bitumen. Waste plastic as a stabilizing additive in stone mastic. Asphalt rubber applications asphalt rubber is the process of adding recycled, crumb rubber to hot mix asphalt called dry process or the asphalt binder called wet process to modify the final mixture difficult to use in densegraded mixtures due to residual crumb rubber best used in gapgraded type mixtures sma and ogfc.
Sma has found use in europe, australia, the united states, and canada as a. Local and overseas experience with stone mastic asphalt indicates that initially the skid resistance of the surface improves with trafficking as the polymer on the surface aggregate is worn off and the potential skid resistance is realised. Ts 1151 material specification for superpave and stone. M10 notes to the specification for dense graded and stone.
The stone skeleton is filled with mastic of bitumen and filler to which fibres are added to provide adequate stability of bitumen and to prevent. Using the marshall mix design, the main objective of this paper is to investigate the effects of waste palm oil clinker poc as fine aggregates replacement on the properties of stone mastic asphalt sma mixture. Engineering road note 10 main roads western australia. 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. Stone mastic asphalt is a delicate balance be tween the mastic and the aggregate fraction requiring good quality aggregates, consistent grad ings and careful dosage of mineral fibres to avoid an. Sma can be laid to the same thickness as conventional. Waste plastic as a stabilizing additive in stone mastic asphalt. Pdf the importance of stone mastic asphalt in construction. Asphalt concrete ac hot rolled asphalt hra stone mastic asphalt sma. Development of a recycled polymer modified binder for use. Guidance notes rdgn030 was issued in december 2001 introducing the use of stone mastic asphalt sma. It has low air voids with high levels of macro texture when laid, resulting in a waterproof layer with good surface drainage 10.
While it is primarily used for heavily trafficked roads and is the preferred surfacing in some countries, sma can be used for all types of pavements. For the purposes of this document the term asphalt is used throughout in the generic sense to refer to the range of mixtures as used in the uk. Stone mastic asphalt is a gap graded bituminous mixture containing a high proportion of coarse aggregate and filler. Stone mastic asphalt was developed in germany during the mid 1960s. Stone matrix asphalt sma, which has been used in europe for. Functional performance of stone mastic asphalt pavements. The primary aim of this study was to investigate the effect of adding crumb tyre rubber as an additive to sma mixture. Pdf performance evaluation of stone mastic asphalt sma. This research study seeks to identify the characteristics and properties of glass fiber reinforced stone mastic asphalt with specific emphasis on the fatigue properties of fiber reinforced sma. This structure improves the strength and the performance of sma even higher than the dense graded and open graded asphalt mixtures. Gritting of the stone mastic surface has been found to immediately enhance early life skid resistance and. Istilah campuran sma di amerika dikenal dengan singkatan dari stone matrix asphalt, sedangkan di eropa adalah stone mastic asphalt. The effects of coarse aggregate content on the resistance of stone matrix asphalt sma mixtures to moisture damage, aging, and lowtemperature cracking were evaluated. Experimental study on creep behavior of stone mastic.
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