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Ballast is a granular material which is placed and packed below and around the railway sleepers. Different types of ballast materials used are broken stone, sand, gravel, moorum, brickbats etc. The main purpose of ballast is to transmit ...


Page 6 Building Materials & Construction 1.4.2 Balast 1. Igneous rock 2. It is compact, hard and heavy 3.Available in red, yellow grey, blue and greenish black colour 4. Specific gravity is 3 and compressive strength varies 1530 to 1890 kg/cm2. 5. Used for ornamental, rail road ballast, aggregates for …


10/11/2012 7 Road Aggregate 101: Nominal maximum and/or minimum sized stone in mix The nominal size distribution of an aggregate specification is defined as the range of sieve openings through which of the aggregate can pass. Road Aggregate 101: Gradation or distribution of different sized stones


10 Types of Stones Used for Building Constructions. Many types of stones are available such as basalt, marble, limestone, sandstone, quartzite, travertine, slate, gneiss, laterite, and granite which can be used as construction materials. The stones used for building construction should be hard, durable, tough, and should be free from weathered ...


Roadstone Wood :: Commercial :: Aggregates, Granular & Stonefill. Larger size stone are used to form the base of the road while smaller sized aggregates mixed …road bases, house foundations, site development, railway ballast, … »More detailed


10/11/2012 7 Road Aggregate 101: Nominal maximum and/or minimum sized stone in mix The nominal size distribution of an aggregate specification is defined as the range of sieve openings through which of the aggregate can pass. Road Aggregate 101: Gradation or distribution of different sized stones


The Perfect Ballast Stone. Ballast Stone is also known as railroad ballast, walking ballast, mainline ballast, shortline ballast, yard ballast, AREMA ballast, AREMA 4a and AREMA 5 ballast. This material is used primarily for railroads as mainline ballast or cross walk material. Because the purpose of Ballast Stone is to improve drainage.


Different Types Of Aggregate And Their Uses


Road Construction Materials – Crushed stone products from quarried granite including Granular A, 5/8" Crusher Run, Granular B (Type II), 2" Crusher Run, Granite Screenings; Granular Road Bed Products including Granular B and Sand Fill. ... Ballast Stone – Hutcheson quarries extensive hard rock reserves of metababbro, metadiorite ...


Ballast is the granular material usually broken stone or brick, shingle or kankar, gravel or sand. It provides a suitable foundation for the sleepers. It also holds the sleepers in their correct level and position. The lateral stability of a track depends on it.


1 This classification is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.50 on Aggregate Specifications. Current edition approved Oct. 1, 2017. Published October 2017. Originally approved in 1937. Last previous edition approved in 2012 as D448 – 12. DOI: 10.1520 ...


The following materials for Railway Ballast used on the railway track. 1. Broken Stone. Broken stone is one of the best materials for railway ballst to be used on the railway tracks. Almost all the important railway tracks are provided with broken stone. The stone to be used as railway ballast should be hard, tough nonporous and should not ...


Stones used for railway ballast. They are also used as blocks in the construction of bridges, retaining walls, abutments, piers, dams, lighthouses, etc. Characteristics of an excellent building stone include. The following are the qualities or needs for a good building stone:-Durability:-A good building stone must be durable. The factors like ...


Ballast is aggregate material used as the foundation in the construction of rail tracks and is usually made from crushed stone. It is packed between, below and around the rail sleepers or ties, and serves a number of purposes.


CLASS A ROAD STONE is an aggregate material comprised of fractured pieces of Ordovician Dolomitic limestone that is blended with a determined amount of limestone fines. Because the material is a combination of larger pieces and fines, it compacts very well. It helps to create a stable base for applications when fabricating foundations, road sub ...


Granular base materials typically contain a crushed stone content in excess of 50 percent of the coarse aggregate particles. Cubical particles are desirable, with a limited amount of flat or thin and elongated particles. The granular base is typically dense graded, with the amount of fines limited to promote drainage.


Aggregates are the most mined material in the world. Construction aggregate is a broad category of granular raw material of different sizes (sand, gravel, crushed stone, slag, recycled concrete etc) used in construction. Aggregate can be used in a number of ways in construction. In roads and railway ballast the aggregates are used to resist the overall (static as well as