Page 76 - GRIHA Manual Volume V - Introduction to National Rating System
P. 76
Evaluation procedure 69
CRIteRIon 15
utIlIzAtIon of fly AsH
In buIldInG stRuCtuRe
GRIHA-speciic information
Objective
to use low-embodied energy industrial waste fly ash as the construction material. fly ash, an
industrial waste having the properties of cement and very low-embodied energy, is used in
combination with cements that are high in embodied energy.
15.1 Commitment
15.1.1 rC (reinforced concrete) (including ready-mix concrete) to make use of fly ash by using
PPC (Portland pozzolona cement) containing fly ash. a minimum of 15% replacement of
cement with fly ash in PPC (by weight of the cement used) in the overall rC for meeting
the equivalent strength requirements.
15.1.2 use fly ash in building blocks for the walls. use of fly ash-based bricks/blocks (such as
fla-g stabilized, fly ash-lime bricks, load bearing, and non-load bearing fly ash-based
concrete blocks, ClC blocks, and aaC blocks) in both 100% of load-bearing and non-
load-bearing wall systems, which utilizes a minimum of 40% of fly ash by volume of
materials used for the total walling system in the building.
15.1.3 use fly ash in plaster/masonry mortar by employing PPC. use plaster and/or masonry
mortar, which utilizes a minimum of 30% of fly ash in PPC, in 100% wall/ceiling finishes
and wall construction, meeting the required structural properties.
15.2 Compliance
the following documents should be submitted.
15.2.1 Fly ash use in RC: minimum 15% replacement of cement with fly ash by weight of
cement used in the total structural concrete. Provide supporting document from the
manufacturer of the cement specifying the fly ash content in PPC used in reinforced
concrete.
15.2.2 For use of fly ash in building blocks of load bearing and non-load bearing wall: minimum
40% replacement of cement with fly ash by volume of materials, for 100% load bearing
and non-load bearing walls. Provide supporting document from the manufacturer of
the pre-cast building blocks specifying the fly ash content of the blocks used in an infill
wall system.
15.2.3 For use of fly ash in plaster and masonry mortar: minimum 30% use of fly ash in place
of cement by weight in overall plaster and mortar requirement. Provide supporting
document from the manufacturer of the cement/ready mix concrete, specifying the fly
ash content in PPC used in plaster and masonry mortar.
CRIteRIon 15
utIlIzAtIon of fly AsH
In buIldInG stRuCtuRe
GRIHA-speciic information
Objective
to use low-embodied energy industrial waste fly ash as the construction material. fly ash, an
industrial waste having the properties of cement and very low-embodied energy, is used in
combination with cements that are high in embodied energy.
15.1 Commitment
15.1.1 rC (reinforced concrete) (including ready-mix concrete) to make use of fly ash by using
PPC (Portland pozzolona cement) containing fly ash. a minimum of 15% replacement of
cement with fly ash in PPC (by weight of the cement used) in the overall rC for meeting
the equivalent strength requirements.
15.1.2 use fly ash in building blocks for the walls. use of fly ash-based bricks/blocks (such as
fla-g stabilized, fly ash-lime bricks, load bearing, and non-load bearing fly ash-based
concrete blocks, ClC blocks, and aaC blocks) in both 100% of load-bearing and non-
load-bearing wall systems, which utilizes a minimum of 40% of fly ash by volume of
materials used for the total walling system in the building.
15.1.3 use fly ash in plaster/masonry mortar by employing PPC. use plaster and/or masonry
mortar, which utilizes a minimum of 30% of fly ash in PPC, in 100% wall/ceiling finishes
and wall construction, meeting the required structural properties.
15.2 Compliance
the following documents should be submitted.
15.2.1 Fly ash use in RC: minimum 15% replacement of cement with fly ash by weight of
cement used in the total structural concrete. Provide supporting document from the
manufacturer of the cement specifying the fly ash content in PPC used in reinforced
concrete.
15.2.2 For use of fly ash in building blocks of load bearing and non-load bearing wall: minimum
40% replacement of cement with fly ash by volume of materials, for 100% load bearing
and non-load bearing walls. Provide supporting document from the manufacturer of
the pre-cast building blocks specifying the fly ash content of the blocks used in an infill
wall system.
15.2.3 For use of fly ash in plaster and masonry mortar: minimum 30% use of fly ash in place
of cement by weight in overall plaster and mortar requirement. Provide supporting
document from the manufacturer of the cement/ready mix concrete, specifying the fly
ash content in PPC used in plaster and masonry mortar.
