A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
On the Workability of Mortar and Concrete Mixtures Containing Calcined Clay Blends
Calcined clays can be used in mortar and concrete as a part of a binder (LC3) or as a supplementary cementing material (SCM). The aim here is to substitute fly ash as an additive in concrete recipes. A stable mixture between two regionally available clays, burnt together with a certain ratio of 60:40 wt% at 650–680 °C, could be produced. Such metaclays produced in larger amounts were investigated in different mortar and concrete mixtures. The production indicates an important problem with the workability of the fresh concrete mixtures. That is why different superplasticizers were tested. It could be found that especially a mixture between a PCE-based material and a special additive developed for loam sands provides very good results. The workability increases from less than 200 mm slump on a value of about 300 mm. The combination of calcined clay materials and specially developed superplasticizer mixtures allows producing concrete with very different properties. It can be a closed system for the production of durable concrete structures.
On the Workability of Mortar and Concrete Mixtures Containing Calcined Clay Blends
Calcined clays can be used in mortar and concrete as a part of a binder (LC3) or as a supplementary cementing material (SCM). The aim here is to substitute fly ash as an additive in concrete recipes. A stable mixture between two regionally available clays, burnt together with a certain ratio of 60:40 wt% at 650–680 °C, could be produced. Such metaclays produced in larger amounts were investigated in different mortar and concrete mixtures. The production indicates an important problem with the workability of the fresh concrete mixtures. That is why different superplasticizers were tested. It could be found that especially a mixture between a PCE-based material and a special additive developed for loam sands provides very good results. The workability increases from less than 200 mm slump on a value of about 300 mm. The combination of calcined clay materials and specially developed superplasticizer mixtures allows producing concrete with very different properties. It can be a closed system for the production of durable concrete structures.
On the Workability of Mortar and Concrete Mixtures Containing Calcined Clay Blends
RILEM Bookseries
Bishnoi, Shashank (editor) / Huenger, Klaus-Juergen (author) / Sander, Ingolf (author) / Zuckow, Natalia (author)
2020-04-14
9 pages
Article/Chapter (Book)
Electronic Resource
English
Calcined clay mixtures , Supplementary cementing material , Workability , Superplasticizers mixtures , Precast concrete elements Engineering , Building Materials , Sustainable Architecture/Green Buildings , Characterization and Evaluation of Materials , Solid Construction , Building Construction and Design
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