Compatibility between calcined clay-blended cements and PCE superplasticizers
Discover our latest LabNews scientific article and the impact that the different sources of calcined clay will have in your concrete mix design.
Discover our latest LabNews scientific article and the impact that the different sources of calcined clay will have in your concrete mix design.
During this field trial, we have compared CHRYSO®ICARE technology to a conventional product in terms of mill output and we have adjusted limestone addition and fineness/blaine targets.
The introduction of luminescent pigments in materials in order to provide visibility in low light or zero brightness (night, shade, darkness, interior unlit due to an electric failure…) is sought.
The performance of conventional strength enhancers can be limited by different grinding process constraints. An example is given with a process design based on a combined high-pressure-roller-press with single chamber ball mill and 3rd generation separator.
In some specific process conditions (e.g. Vertical Roller Mills), the use of conventional high performance strength enhancers can lead to process limitations.
In order to reduce CO2 emissions coming from cement production, manufacturers are increasingly making use of supplementary cementitious materials (SCMs)
Cement pastes are thixotropic; left at rest, their rheological constants —among which viscosity— increase over time. Under steady shear, cement paste viscosity decreases (which qualifies it as shear-thinning) but may take some time to reach a steady value (which qualifies it as thixotropic).
The robustness of PolyCarboxylate Ether (PCE) superplasticizer performance is challenged by the variable amount of clay minerals in aggregates. It will be shown here how a swelling clay like Montmorillonite interacts with polymers, interfering with their ability to disperse cement particles thus influencing the rheological behavior of concrete.