The construction sector is linked in many ways to the problem of the global increase in CO2 emissions. In addition to the emissions that arise during the manufacture of building materials and the of structures (“grey CO2”, “grey energy”), emissions released over the life of the building object must be taken into account.
If you want to find out more about these topics, the majority of us will use Internet search engines such as Google and enter the appropriate search terms.
In this context, most of the search queries apparently relate to the materials area and in particular to the construction materials cement and concrete.
A compilation of the hits for typical search queries on Google for corresponding terms in connection with these two building materials results in the following statistics (as of 11/11/2021):
| Query German | Number | Query English | Number |
|---|---|---|---|
| Grüner Zement | 3.470 | green cement | 241.000 |
| Grüne Zement Technologie | 240.000 | green cement technology | 16.200 |
| Grüner Beton | 2.300 | green concrete | 905.000 |
| Alternative Zemente | 149 | alternative cements | 13.200 |
| Zementalternativen | 121 | alternatives to cement | 344.000 |
| Neuartige Zemente | 267 | novel cements | 7.250 |
| Niedrig CO2 Zement | 120.000 | low Co2 cements | 7.310 |
| Ökologischer Zement | 169 | ecological cements | 771 |
| Klimaneutraler Zement | 569 | climate neutral cements | 9.800.000 |
| Klimafreundliche Zemente | 103 | climate neutral concrete | 3.040 |
| Ökobeton | 3.840 | Eco Concrete | 53.200 |
| Alternative Zementherstellung | 3 | alternative cement production | 5.910 |
| CO2-arme Zemente | 247 | low-CO2 Cement | 4.910 |
| CO2-arme Technologien | 9.270 | low carbon technologies | 921.000 |
| kohlenstoffarmer Zement | 69 | low-carbon cements | 6.200 |
| Beton CO2 Fußabdruck | 8 | concrete carbon footprint | 9.620 |
| Emissionsfreie Zementherstellung | 1 | Zero-carbon cement production | 1.910 |
| CO2 negative Zemente | 80.200 | carbon-negative cement | 4.800 |
| Alternative Bindemittel | 3.230 | alternative binders | 108.000 |
| Nachhaltiger Zement | 273 | sustainable cement | 57.400 |
| Nachhaltiger Beton | 1.390 | sustainable Concrete | 666.000 |
| Grünes Zement Start-up | 178.000 | low-carbon cement startup | 8 |
| Öko-freundlicher Zement | 55.400 | Eco-friendly cement | 23.900 |
| Umweltfreundlicher Zement | 654 | environmentally friendly cement | 15.600 |
| Umweltfreundlicher Beton | 672 | environmentally friendly concrete | 52.200 |
| Innovationen bei grünem Zement | 113.000 | Green cement innovations | 9 |
So there is a particular search for climate-neutral cements and concretes. In the German-speaking area, especially with the attribute “green”, for example “green cement technology” or “green cement start up”. In English, terms like “climate neutral” or “low carbon” have a high number of hits.