Bitumen Mastic Definition
Bitumen Mastic is a type of asphalt composed of suitable graded mineral and asphaltic cement, also to take in proper proportion to consistent mass solid or semi-solid form. when it is heated it is in fluid form and then becomes solid.
Mastic asphalt (MA) is a dense mixture consisting of coarse aggregate, and/or sand, and /or limestone fine aggregate, and/or filler and bitumen, which may contain additives (for example polymers, waxes). The mixture is designed to be of low void content. The binder content is so adjusted that the voids are completely filled and that even a slight excess of binder may occur. Mastic asphalt is pour-able and able to be spread in its working temperature condition. It requires no compaction on site.
On the other hand asphalt mastic – abbreviation AM – is a term used in Europe to describe a mix of sand (that is, without aggregates > 2 mm), and/or limestone fine aggregate, and/or filler and bitumen that is used especially for waterproofing in a variety of applications.
The formulation of the mixture is chosen as a function of
– field of application
– mechanical load
– thermal load
– chemical load
– climatological influences.
Bitumen Mastic Applications
Bitumen Mastic is used for concrete and ordinary red brick masonry with cement plaster surface is the basic method for the construction of floors, foundation, tanks, etc. To protect the commercial and civil structure of plants and building from corrosive attack acid-resistant brick lining is mostly used, Bitumen Mastic has good resistance to weak, diluted acids, alkalis salts, etc, also used as open mastic flooring for heavy-duty flooring.
It is used in:
– Bridge decks
– Flooring (building)
– Flooring (industrial)
– Road construction
– Rooftop car parks
– Hydraulic constructions
– Flat roofing
In the past, that means approximately until 1970, mastic asphalt was often manufactured in mobile cookers (usually at the worksite) that were filled with the various components. By slowly heating them, the components were brought to the right temperature, where the mix-ing device (then mostly a horizontally rotating mixer shaft) served to make sure that the mix was homogeneous for processing. Of course, in this way, no high production rates could be achieved.
Nowadays mastic asphalt is manufactured in (specially designed) stationary industrial plants. These are designed to proportion the materials, dry the mineral aggregates, and mix them in a heat-controlled environment. Application specifications control the temperatures at which material is produced. Typically, in the past, mastic asphalt production temperatures were in the range of 230 to 270 ºC. However in recent years considerable research and investments have been done (and are still ongoing) to lower these temperatures beneath 230 ºC – in some countries even below 200 °C.
Bitumen Mastic is available in 25 Kg Carton Box & 20 Kg new steel drum.