Construction materials carbon footprint assessment for a Real Estate Conglomerate- Rajesh

A Project by Rajesh

Business Context

In support of the Arcana Restoration Ltd. Construction Materials Carbon Footprint Assessment Project, Rajesh was requested to estimate the carbon footprint of the following construction materials being used-

Hydraulic lime (Graymont Niagara PHL 3.5).

New heritage-match bricks (ibstock, Heritage Red Blend),

Reclaimed heritage bricks

The information from this report would be used by Arcana Restoration Ltd. to highlight the carbon footprint of these construction materials to customers and on projects wherever required.

Results Achieved

  1. The estimated cradle to gate carbon footprint of new heritage-match bricks supplied
    by ibstock (Heritage Red Blend) in the United Kingdom is 0.8 kgCO2e per brick or
    376.8 kgCO2e per tonne of bricks.
  2. The estimated cradle to gate carbon footprint of reclaimed heritage bricks supplied
    from Toronto Ontario is 0.08 kg per brick or 37.5 kgCO2e per tonne of bricks, and if
    these reclaimed bricks are supplied from Windsor Ontario the estimated cradle to
    gate carbon footprint is 0.12 kgCO2e per brick or 57.5 kgCO2e per tonne of bricks. It
    is estimated that reclaimed heritage bricks have a production carbon footprint
    (2.7 kgCO2e per tonne bricks) that is approximately 79 times less than the production
    carbon footprint of new heritage-match bricks produced by ibstock (213.0 kgCO2e
    per tonne of bricks).
  3. The cradle to gate carbon footprint of hydraulic lime (Graymont Niagara PHL 3.5) is
    estimated to be 645.0 kgCO2 per tonne of hydraulic lime, however as hydraulic lime
    absorbs CO2 while it cures, the cradle to gate carbon footprint including curing is
    estimated to be 375.0 kgCO2 per tonne of hydraulic lime (42% less than non-cured
    value). The estimated cradle to gate carbon footprint including curing of hydraulic
    lime mortar using a 1:2.5 ratio of Graymont Niagara PHL 3.5 to sand is estimated to be
    89.3 kgCO2 per tonne of mortar which is approximately 64% less than the carbon
    footprint of mortar using cement and sand (244.0 kgCO2 per tonne of mortar) mixed
    at a ratio of 1:2.

Process

Details available on request.

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