Akademik Veri Yönetim Sistemi
4 th International Congress of Engineering and Natural Sciences, Ankara, Türkiye, 24 - 25 Mayıs 2024, ss.1
Approximately 8% of the CO2 emitted into the atmosphere comes from cement production alone. For
this reason, researchers around the world investigate alternative binders to reduce CO2 from cement
production. In addition, according to European Green Deal, which is closely related to our country,
precautions should be taken in cement production and consumption stages starting from 2023.
Therefore, in this study, it has been investigated whether the parquet and curbs used in municipalities
in Kayseri can be produced in a more environmentally friendly way without cement. For this purpose,
blast furnace slag as binder, powdered sodium metasilicate as activator and river sand as aggregate were
used. Cement-free mixtures with zero workability were produced using industrial machines. The
samples were cured in air and water for 7 and 28 days. According to the test results, the water absorption
rate (max. 6%) and abrasion resistance (max. 18000 mm
3
/5000mm
2
) conditions specified in TS 2824
EN 1338 and TS 436 EN 1340 for parquet and curbs were met in cementless parquet and curbs.
Similarly, the minimum 2.9 MPa and average 3.6 MPa criteria for tensile strength in splitting for parquet
and the minimum 3.5 MPa flexural strength criteria for curbs were met for cementless parquet and
curbs. An environmental impact study was also carried out in the study. Accordingly, while the Global
Warming Potential (GWP) value for traditional cement parquet was 3.35E+02 kg CO2 eq, it was
calculated as 1.60E+02 kg CO2 eq with a 52% decrease for alkaline activated parquet. For cement based
curbs, the GWP value was 3.40E+02 kg CO2 eq, while for alkali-activated curbs it was calculated as
1.41E+02 kg CO2 eq with a 58% decrease. The results showed that cement-free parquet and curbs both
meet the limit conditions stipulated by the standards and are more environmentally friendly building
materials.