Rheological model for self consolidating concrete

Consecutively, this procedure was repeated for flow rates around 10, 14 and 16–18 l/s (if time and pressure allowed for the latter one).

As a result, for each imposed flow rate (except the 4 l/s), an equilibrium value for the pressure loss was obtained.

As a result, the flow rate estimated by determining the time was equal to the real flow rate during which pressure was registered [The pump used at the Université de Sherbrooke was a Schwing BPL 900 truck-mounted piston pump.

The maximum pressure that the pump can deliver is 60 bar, while the maximum flow rate is 25 l/s. Behind the pump, a 30 m long loop circuit was installed.

However, due to a limited number of data points in some of the experiments, or a negligible presence of shear-thickening in other cases, shear-thickening is not taken into account in this paper.The concrete pump used for the experiments at Ghent University was a truck-mounted piston pump (Schwing P2023), capable of delivering a maximum pressure of 95 bar, or a maximum flow rate of 41.5 l/s.The working action of the pump is as follows: two cylinders with a volume of 83.1 l each alternately pull concrete from the hopper and push concrete inside the pumping circuit.Behind the pump, a loop circuit was installed with 100 mm diameter pipes, allowing the concrete to flow back inside the hopper of the pump.The circuit was 103 m long for SCC A and B, and 81 m long for SCC C and D (Fig.final straight section was inclined to complete the loop.Pressure sensors were installed flush in the last straight horizontal section, with a separation distance of 13 and 10 m in the 103 and 81 m circuit, respectively (Fig.The pressure loss at each previous flow rate was also determined.Connecting the equilibrium Δ delivers different lower parts of a loop curve.In many cases, the concrete undergoes a large shear rate in the pipe, thus (re-)dispersing cement particles.This is expected to be the main cause of the observed decrease in plastic viscosity, V-Funnel flow time and pumping pressure resulting from increased flow rate or pumping time.

Leave a Reply

Your email address will not be published. Required fields are marked *

One thought on “rheological model for self consolidating concrete”

  1. Mingle single dating Indian dating service to find local singles of Hindu and Sikh background. Anything less than clear and honest communications will not end mingle single dating. I hoped I would get a feel for what it is like to be single, especially at my age, these guys led me to think ok, not all bad, there are some people out there for me, not even necessarily mingle single dating, but some guys I could want to at least learn a little about. Sign up for free and connect with other Christian singles looking for love based on faith. Indian, Middle Eastern, men from Africa, Asian can have a hard time finding people. To many hoops to jump mingle single dating, to restrictive and to costly.