EOI No. CC:PE-C:01 Date: 13.11.2018
Page 2 of 13
shall comprise of Sub-grade, Granular sub-base (GSB), Dry Lean geo-polymer
Concrete (DLC) Sub-base, Pavement quality Geo-polymer concrete (PQC)
including groove cutting for joints, application of sealants, dowels/tie bars as per
design, sampling, testing of materials and getting mix design approved from
NTPC approved agencies/Institutes.
Scope shall include all labour, staff, materials (except fly ash), consumables,
equipment, temporary works, temporary storage sheds, temporary facilities,
constructional equipment/plants, fuel supply, transportation and all incidental
items not specified but reasonably implied or necessary for the completion and
proper functioning of the road.
The concrete batching plant shall have to be modified to suit type of materials
and chemical solution and production of GPC of suitable grade. The solid
constituents of geo-polymer concrete mix such as coarse aggregate, fine
aggregate, fly ash and slag are to be mixed dry for 2-3 minutes, then Geo-
activator solution, consisting of sodium silicate and sodium hydroxide pre-mixed
in tanks at site, is added to the dry mix in batching plant mixer. The whole
mixture is mixed until a homogeneous cohesive mix is obtained. Pumping
devices shall be used for transferring activator solution from tank to the mixer.
Proportion of different ingredients and mixing process are to be
finalized/established during mix design finalization and trial mix at site.
5.0 Expression of Interest (EOI):
‘Expression of Interest’ is invited from Indian Firms/Contractors with relevant
experience in construction of Concrete road. Contractors/Firms with experience
in construction of concrete road may submit their EOI based on their
assessment of organizational capacity to take up such type of special concrete
road works.
Through this EOI, NTPC intends to create experience/capability database of
Contractors/Firms in India having experience in executing works of concrete
roads using Pavement Quality Concrete (PQC). This EOI also intends to collect
feedback from parties regarding field practices /practical difficulties during
implementation of concrete road construction.
This invitation for Expression of Interest is not intended for empanelment or pre-
qualification of bidders. For enlistment of parties, separate notification shall be
published by NTPC as and when required.
07. Eligibility:
The Contractor/Firm should meet the following Requirements stipulated here
under:-