Thanks to Gibson Hurst for the photo

On the route to a carbon neutral world, construction can’t be bypassed.

Knowing that, we have to go down the rabbit hole to find the drivers of CO2 emissions and identify ways to avoid these emissions. Spoiler alert: it’s not as easy as plugging out conventionally generated electricity and plugging in renewables.

Here are my 10 slices on why reducing CO2 emissions in construction isn’t a plug and play game:

1/ Yonsei University conducted a study in which they measured CO2 emissions during the construction phase of a building. According to their research, 2.4% of CO2 resulted from material transportation while 4.2% of CO2 was produced during on-site construction. However, the majority of emissions — 93.4% …

Image Credits: Pixabay / Pexels

Stating the obvious: we have been living on credit for decades. Since 1960 the per capita CO2 emissions have been growing by 55%. The more prosperity we have been attaining, the more CO2 we have been emitting. An increase in GDP per capita is highly correlated with an increase in CO2 emissions per capita. The reasons are diverse: our individual mobility preferences and our food habits are just two examples.

Multiple sources claim that ready-mixed concrete (RMC) is the second most used substance after water. While we did not validate this exact assessment we know that RMC is vastly used throughout the world. Yearly production rates are at ~270 mn cubic meters in the US and ~330 mn cubic meters in Europe. In India, however, concrete is predominantly mixed on site leading to a lower production volume of RMC which is at 90 mn cubic meters.

RMC is a commodity and its production not a state secret. But: the devil is in the delivery.

‘That in which our calculations fail…

Moritz Henschel

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