CALL US
0086-371-60922096

Assessing the pumpability of concrete with the slump and

UNDERSTANDING THE PUMPABILITY OF CONCRETE

The pumpability of concrete can be described by the consistency and the cohesiveness of this mix. The consistency is the relative ability to flow and in China this is measured by the slump test. The cohesiveness is the resistance to segregation and bleeding. In China this is only measured on request by the normal bleeding test; a time consuming test.

Learn More

PROPOSING A SIMPLE METHOD FOR ASSESSING CONCRETE …

1 PROPOSING A SIMPLE METHOD FOR ASSESSING CONCRETE PUMPABILITY Y. YAMADA1†, S. HASHIMOTO2 *, Y. EMOTO3 and H. HAZEHARA2 1Graduate School of Civil Engineering, Fukuoka University, Japan 2Assistant professor, Department of Civil Engineering, Fukuoka University, Japan 3Professor, Department of Civil Engineering, Fukuoka University, Japan ABSTRACT As a method for …

Learn More

[PDF] Assessing the pumpability of concrete with the slump

8 ESSENTIAL QUALITY REQUIREMENTS OF PUMPED CONCRETE - Civil…

Learn More

Question 13 What is a Slump Test and what does it measure

The concrete slump test is an empirical test that measures the workability of fresh concrete. More specifically, it measures the consistency of the concrete in that specific batch. This test is performed to check the consistency of freshly made concrete. Consistency is a term very closely related to workability.

Learn More

Relationship between workability and rheological

Nov 01, 2020 · Pumpability as function of slump and bleeding . Zerbino et al. (2009) propose some workability experiments and rheological evaluation for the SCC mixture with D max varying from 12 to 20 mm. The results reveal that if D max of coarse aggregate increases, the viscosity μ and the time of V-shaped funnel flow, T v will be large.

Learn More

8 ESSENTIAL QUALITY REQUIREMENTS OF PUMPED CONCRETE

Mar 21, 2016 · Concrete should be sampled at both ends of the pumpline to determine what, if any, changes in the slump, air content, and other concrete properties occur during pumping. However, the quality of the concrete being placed in the structure can only be …

Learn More

Influence of Pumping on Fresh Concrete Properties for SCC

Pumpability of Self Consolidating Concrete Slump Flow Time-- F1 F2 F3 2 4 6 8 10 12 14 16 18 t 50 [s] Truck No. CEMIaboveground CEMIunderground CEMIIaboveground CEMIIunderground Self Compacting Concrete Underground ; Dahlhaus, Bier et. al, Ibausil, 2006

Learn More

Influence of Pumping on Fresh Concrete Properties for SCC

Pumpability of Self Consolidating Concrete Slump Flow Time-- F1 F2 F3 2 4 6 8 10 12 14 16 18 t 50 [s] Truck No. CEMIaboveground CEMIunderground CEMIIaboveground CEMIIunderground Self Compacting Concrete Underground ; Dahlhaus, Bier et. al, Ibausil, 2006

Learn More

A Compendious Rheo-Mechanical Test for Printability

Jul 08, 2020 · Since both factors rely on the behavior of concrete in the fresh state, rheological assessment is crucial prior to 3DCP. In a previous study done by Roussel, a correlation of numerical simulation of ASTM mini-slump cone flow and rheometer results was successfully addressed. As the model solely considers material flow under gravitational

Learn More

DESIGN AND APPLICATION OF A NEW RHEOMETER FOR …

clear correlation between the common concrete flow tests like the slump flow or shock table test and the pumpability of fresh concrete. This is also true for more modern test like the L-box test, the J-ring or the V-funnel test. Even with the most modern concrete rheometers the predicting of the maximum pressure or pump volume per hour is not

Learn More

Workability assessment for polystyrene aggregate concrete

Workability assessment for polystyrene aggregate concrete Ben Sabaa and R.Sri Ravindrarajah 7/8 Table 3.2: Characterisation of workability for polystyrene aggregate concrete Apparent DIN:1048 Compaction Slump workability Compaction index Index (measured) (mm) very low > 1.45 1.41 - 1.52 - low 1.26 - 1.45 1.30 - 1.40 less than 10 medium 1.11 - 1

Learn More

Workability Tests - Tarantula Curve

The Slump Test. While the Slump Test has been widely used as a specification to evaluate workability, it has been commonly believed to be inadequate at measuring the workability of concrete in the field. Shilstone had this to say about the Slump Test, "The highly regarded slump test should be recognized for what it is: a measure of the

Learn More

Predicting Pumpability and Shootability of Crushed

Nov 14, 2016 · This study aims to estimate the pumpability and shootability of wet-mix shotcrete (WMS) made with crushed aggregates and various admixtures such as silica fume, fly ash, ground granulated blast furnace slag (GGBFS), metakaolin, and steel fiber based on rheological properties. The IBB rheometer was employed as an apparatus to measure the rheological properties of freshly mixed …

Learn More

Question 13 What is a Slump Test and what does it measure

The concrete slump test is an empirical test that measures the workability of fresh concrete. More specifically, it measures the consistency of the concrete in that specific batch. This test is performed to check the consistency of freshly made concrete. Consistency is a term very closely related to workability.

Learn More

Assessment and prediction of concrete flow and pumping

Mar 01, 2020 · Concrete flow in a pipeline is a complex material response to the induced pressure accompanied by shear in LL [], friction between solid particles and pipe wall [10,18,19], and significant hydrodynamic interactions among particles within the partially sheared concrete bulk [20,21]; cf. Fig. 2.The extent to which frictional resistance is active depends on the state of saturation of the concrete

Learn More

for the Next Millennium - Concrete Construction

slump of concrete also decreases over time. H o w e v e r, to measure the time sensitivity o f slump, it must be measured at regular inter- ( m o b i l i t y, stability, cohesion, etc.) and technical assessment (pumpability, com-p a c t a b i l i t y, ease of placement). Scientific means may determine a more detailed

Learn More

Self-compacting concrete: New Zealand experience 2000 – …

Workability of concrete is a very broad term, which is related to consistency, placeability, pumpability and stability. The most common way to characterise workability of normal concrete is slump value. By definition, SCC is a high-performance concrete that flows into place and around obstructions under

Learn More

Take-Test_-Quiz-3-20.pdf - Take Test Quiz 3 u2013 200502

Question 1 Water-cement ratio is one of the important specifications for concrete a. Pumpability b. Slump only c. Strength and workability d. Curing speed Concrete containing super-plasticiser in a mix tends to produce a. a concrete with good workability and poor cohesion b.

Learn More

for the Next Millennium - Concrete Construction

slump of concrete also decreases over time. H o w e v e r, to measure the time sensitivity o f slump, it must be measured at regular inter- ( m o b i l i t y, stability, cohesion, etc.) and technical assessment (pumpability, com-p a c t a b i l i t y, ease of placement). Scientific means may determine a more detailed

Learn More

Assessing the pumpability of concrete with the slump and

8 ESSENTIAL QUALITY REQUIREMENTS OF PUMPED CONCRETE - Civil…

Learn More