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Properties of asphalt.
Hot asphalt, asphalt in cold, asphalt prefabricated. Acrylic Base water, bases
reliable. Al-Koat introduces the latest in technology for waterproofing: TPO. It
surpasses in everything to any other waterproof one, because it reunites in only
a product, the best attributes of the APP and the SBS. Al-Koat is in the market
a new technology that exceeds the physical properties waterproof asphalts
modified used in the conventional ones of today. TPO represents a technological
revolution, innovating the chemical composition of the used materials, marking
the beginning of a new era of waterproof products of high performance. The
compound TPO is the result of an extensive investigation and development. The
product has distilled asphalt base selected, modified with complex mixtures of
thermoplastic poliolefinas and specific elastomers, forming these the "skeleton"
or structure of the compound, that is a cohesive with excellent impermeable
properties and releases durability. PROPERTIES. High compatibility between the
polymeric asphalts and components. Flexibility to low temperatures exceeding the
one a compound SBS of high quality. Superior resistance to the intemperismo that
the one of a compound APP of high quality. Durability that exceeds any previous
modified asphalt formulation. ADVANTAGES. The waterproof TPO exceptionally work
in an ample rank of temperatures, doing advantageous their use in all the
variety of climatic regions, increasing the productivity of the contractor. The
compound TPO dramatically increases the durability of the impermeable system.
Products TPO such offer prefabricated waterproof attributes of the conventional
ones for their application. Superior mechanical resistance (tension, punching
and sharp effort), conferred by the high gramaje (250 grs./m2) of the polyester
reinforcement no woven.
Characteristics of the mixtures of asphalts. Asphalts are miscible among
them in all the proportions. The penetration and the point of softening of a
mixture of two asphalts can soon be considered using the attached tables uniting
with an air line the points of the vertical scales offering to the penetration
or point of softening of the degrees to be mixed and using the horizontal scale
to read the proportions of the mixture or the required proportions. These graphs
are extremely safe when asphalts that have the same conditions, like for example
the same index of penetration are used or that are oxidized asphalts or asphalts
of direct obtaining.
Diluted asphalts.
Asphalt can be mixed with an ample variety of fractions of distillation of
petroleum for different applications. Light volatile fractions are used for
diluted asphalts where a fast drying is required. Fractions as kerosene or oil
gas is used where allow a prolonged masking time but. Heavy fractions are used
where a permanent softening is required (these mixtures are virtually equal to
very soft asphalts). Two general rules are applied for reliable with asphalts:
When but "heavy" it is the fraction of reliable, better it will be the
dissolution. When but "aromatic" it is the fraction of reliable, better it will
be the dissolution. For oxidized degrees, reliable aromatic they must be used
inexorably, in order to avoid some separation of phases.
Asphalt mixtures and paraffin. The paraffin can be added to asphalt by two
intentions: In order to reduce viscosity when this it warms up. In order to
reduce the " stickseed" when this one cools off. Paraffin with a point of fusion
of around 50-60 ºc is usually used, to concentrations of between 5-10ºc. The
paraffin concentration does not have to exceed 20% to avoid the precipitation of
asfaltenos. Other average ones to reduce the "superficial adhesion of asphalt
are: To cover the surface with talc or others fine fillers to use hard asphalts
but to incorporate a metallic salt organ like for example: 5% of resinato of
manganese. |
