详情
LECA (Lightweight
Expanded Clay Aggregate) is an
aggregate made of expanded clay at
average ***0 C° in rotary kiln,
the
Yielding gases
are expanded by thousands
of small bubbles as long as this
temperature
and those will be
provide many voids and honeycombs at these round shape
aggregates when melted
materials become cold.
The clays and shales expanded were developed about ***7 in Kansas
City, Missouri, to the production in a rotary kin of a patented
expanded aggregate known as Haydite which was used in the
construction of USS Selma, an ocean-going ship launched in
***9 year. There following in the USA the
development of a series of aggregates known as Gravelite, Perlite,
Rocklite and etc. In Europe,
LECA commenced in
Denmark, Germany, Holland (Netherlands) and the UK.
Our factory establish at ***0 and it still the only manufacturer in
Middle East that export to many counties and able to built factory
which is did many time.
The manufactured aggregates are produce in various sizes;
Four usual
grades are (**4) mm,
(***0) mm, (****5) mm and mix grade ***5 mm which has **0
kg/m3 max density, LECA boulder is a the bigger size of LECA
with ******0 mm size and **0 kg/m3 density.
Some of the important
advantages of LECA aggregate are:
lightness, thermal insulation by low conductivity coefficient,
soundproofing by high acoustic resistance,
moisture impermeable,
incompressible under permanent pressure and gravity
loads, non–decomposition against severe condition, fire resistant,
Ph of nearly 7, freezing and melting
resistance, easy movement and transportation, lightweight
backfill and finishing, reduction of construction dead load and
earthquake lateral load, perfect sweet soil for plants,
best material for drainage and filtration.
