Shashank Bishnoi, Soumen Maity,SK Wali, SK Saxena, Mukesh Kumar

Use of stone wastes as fller andpozzolanic material in cement

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Use of marble dust andhydrated cement seeds as

fllers

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Chemical analysis of marble dust  OPC Limestone Marble Dust

SiO2 20.7  7.91 5.97

Al2O3 5.68  2.21 0.35

Fe2O3 4.23  0.82 2.87

TiO2 0.423  0.10 0.083

CaO 62.2  40.8 36.5

MgO 0.88  7.11 11.86

Na2O 0.174  0.09 0.081

K2O 0.322  0.32 0.094

SO3 1.94  0.05 0.041

P2O5 0.023  0.083 0.038

MnO 0.045  0.074 0.302

Cl 0.03  0.006 0.008

LOI 3.12  39.8 41.6

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Marble dust & cement seeds as fller Cement replaced by marble dust and

cement seeds Seeds were ground pre-hydrated cement

Fillers improve rate of hydration ofcements

Strength can be increased

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Isothermal calorimeter

Calmetrix ICal8000

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Rate of hydration

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Efect on strength: Marble dust

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Efect of dispersion

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Rate of hydration: Cement seeds

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Efect on strength: Cement seeds

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Use of stone wastes inLimestone Calcined Clay Cement

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What is LC3?

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Research Team

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Pilot production

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Field performance

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Development of LC3

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LC3: Exemplary development! Raw materials understood Production understood Hydration understood Durability: 90% understood Trial buildings, pavements, feld

specimens, unreinforced concrete built Economy understood Environmental infuence understood Draft standard ready for submission!

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Stone wastes: Marble

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Stone wastes - XRD

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Compressive strength

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Low grade limestone

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Low grade limestone

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Low grade limestone: hydration

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Various grades limestone: strength

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Concrete mix design w/c: 0.32

Water content: 175 litre

LC3: 547 kg (273.5 kg clinker)

Self compacting concrete

Compressive strength (Equivalent to M45) 3 days: 30.8 MPa 7 days: 46.5 MPa 28 days: 51.3 MPa

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Concrete for pavement

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Summary Filler in cements

Use of wastes as pozzolanic materials

Use of LC3 made with reject limestone

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Thanks!Credits:

Satya C. MedepalliVineet Shah

Antara ChowdhurySwadesh KanaujiaSreejith Krishnan