Post on 03-Apr-2018
7/28/2019 THERMOCRETE_v3
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WP Ref. no. :Txxcrete/03/1009BASF Construction Chemicals (India) Private Limited
C-68, MIDC, Thane Belapur Road, Turbhe, Navi Mumbai - 400 613 India
Tel: +91 22 27619992/3, Fax: +91 22 27619242
e-mail: basfcc@vsnl.net www.basf-cc.co.in Page 1 of 1
THERMOCRETE
Light weight, Thermal-Insulating, Expanded Polystyrene bead (EPS) Concrete
DescriptionTHERMOCRETE is site-batched light weight trowel
finished concrete using selective grades of
expanded polystyrene beads (EPS) as thermal-
insulating aggregates. THERMOCRETE is produced
at site by mixing cement, sand, EPS beads and
RheoFIT range of admixture.
UsesTHERMOCRETE combines the construction ease of
concrete with the thermal insulation properties of
EPS and can be used for a very wide range ofapplication where lighter loads or thermal insulation
or both are desired. Application includes:
Flat RCC roofs Flat metal decks Green roofs Balconies and terraces Replacement of Brick-bat koba Protection screed over waterproofing membraneAdvantages Light weight (60% lighter then normal concrete) Can be moulded to any shape and slope Water resistant Lower w/c ratio high compressive strengths Thermal Insulating Easy to applyTypical Mix Proportion: 800 1000 kg/m3 MixCement (OPC/PPC/PSC) : 350 450 kg
Sand : 350 450 kg
Water/ Cement Ratio : 0.28 0.32
RheoFIT Dosage by wt. of cement : 1 2 %EPS Bead, density : 12 18 kg/m
3
EPS beads per m3
: 13 16 kg
Typical properties:Dry density, kg/m
3: 750 95
Compressive strength, at 28 days : 30 60 Kg/cm2
Thermal Conductivity, W/(m-ok) : 0.23 0.26
Specification ClauseThe light-weight, EPS concrete shall be
THERMOCRETE, a site-batched concrete mix
containing BASFs STYROPOR
EPS beads, RheoFIT
range of hyper-plasticiser, ISI marked cement and
zone II sand with compliance to IS: 383. The Mix
proportion shall be as pre-approved by BASF
representative. The mix shall offer maximum thermal
conductivity of 0.26 W/(m.oK)
Direction for useMix IngredientsSelection of the right quality fine aggregates (sand) is of
utmost importance. The sand must be free of
deleterious materials and also free of fine fractions
such as silt or clay. All the sand used must be passing
4.75 mm screen. EPS beads to be used must be
procured from one of the BASF approved EPS
moulder and shall be of uniform size and grade. Seek
the advice of BASF representative for right grade of
RheoFIT for selected sand and site conditions.
MixingLoad cement, sand dry mix for approx a minute andthen introduce 95% of the gauge water along with
predetermined dose of RheoFIT. Allow to mix to obtain
uniformed slurry. Now load EPS beads while continue
to mix and complete the loading. Once a uniform mix
is obtained with all the beads having uniform coating of
cementitious slurry. If the mix looks harsh or dry add
the balance quantity of water based on the need and
retained the rest of the water and continue to mix for
uniform dispersion of the water in the slurry.
ApplicationSpread and finish THEROMCRETE using trowel. Avoidcompaction using vibrator and lightly-compact using
trowel. Protect the direct exposure from sun by
covering up with plastic sheet or shade to avoid quick
loss of water from the mix.
CuringTHERMOCRETE requires water curing once reached
to initial set. Fog spray is preferred to avoid any
undulation during walking over the fresh placements.