### Estimation of the Pumping Pressure from Concrete ...

A new method is proposed to estimate pumping pressure based on concrete composition without experimental measurements. Previous studies show that the pumping pressure depends on the interface friction between concrete and the wall of the pumping pipes. This friction is determined by the thickness and the rheology of the boundary layer formed at the interface.

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Estimation of the Pumping Pressure from Concrete Composition Based on the Identified Tribological Parameters November 2014 Advances in Materials Science and Engineering 2014(2)

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ResearchArticle Estimation of the Pumping Pressure from Concrete Composition Based on the Identified Tribological Parameters Chanh-TrungMai,El-HadjKadri,Tien-TungNgo,AbdelhakKaci,andMustaphaRiche

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Estimation of the Pumping Pressure from Concrete Composition Based on the Identified Tribological Parameters Chanh-TrungMai,El-HadjKadri,Tien-TungNgo,AbdelhakKaci,andMustaphaRiche Laboratory LMG C , University of Cergy Pontoise, Cergy Pontoise, France Correspondence should be addressed to Tien-Tung Ngo; tien

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Estimation of the Pumping Pressure from Concrete Composition Based on the Identified Tribological Parameters Table 4 Concretes compositions used in the study of Kaplan [ 4 ].

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Dec 23, 2014 The line pressure required for concrete pumping is depends on many factors such as vertical rise, pipeline layout, no of bends, concrete slump etc. Following thumb rules may be adopted to calculate rough estimation for pipeline pressure required for concrete pumping.

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Estimation of Super High-Rise Pumping Pressure for High-Performance Concrete Based on Computational Fluid Dynamics Modeling and Situation Measurement Weijiu Cui ,1,2 Chuankai Zhao,1 and Sheng Wang3 1SchoolofCivilEngineering,QingdaoUniversityofTechnology,Qingdao266033,China

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Figure 2. CONCRETE PUMP PERFORMANCE ESTIMATOR. Calculations based on pumpable mix designs containing 55 percent minus-1-inch gravel aggregate. For mixes containing crushed aggregate, increase line pressure by 12 percent. Note that pumping distance is a weighted value which is the sum of total line length plus vertical distance plus length of hose.

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This estimation is depending on the fact that common weight of formworks is 0.239-0.718 kPa. 2. Lateral Pressure on Concrete Formwork Internal pressure resulted from accumulated depth of placed concrete is imposed on vertical formworks such as walls and columns.

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Jun 16, 2016 Large scale constructions needs to estimate a possibility for pumping concrete. In this paper, the state of the art on prediction of concrete pumping including analytical and experimental works is ...

Get price### Concrete Formwork Loads and Pressure Calculations - The ...

This estimation is depending on the fact that common weight of formworks is 0.239-0.718 kPa. 2. Lateral Pressure on Concrete Formwork Internal pressure resulted from accumulated depth of placed concrete is imposed on vertical

Get price### Estimation of the Pumping Pressure from Concrete ... - CORE

Estimation of the Pumping Pressure from Concrete ... - CORE

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The virtual pumpability testing tool as developed should enable a more purposeful material design of pumpable concrete and pre-estimation of pumping

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Jul 27, 2012 The lubrication layer facilitates the pumping of concrete through pipes. If no lubrication layer could be formed, the pumping pressure would be significantly higher to pump the concrete at the same discharge rate. Some authors take the effect of the lubrication layer into account by introducing a slipping or sliding velocity [18, 19, 24, 30, 31].

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Sep 11, 2017 Paul Evans. -. Sep 11, 2017. 10. Pump calculations how to calculate pump speed, head pressure, rpm, volume flow rate, impeller diameter. In this article we learn how to perform pump calculations in both imperial and metric units to assess pumping performance following the change of flow rate, pump speed, head pressure and power.

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Step:1. The pumping operation starts with the discharge of the concrete, usually from a ready-mix truck that mixes concrete mix within its rotating drum. Concrete Dumping in Pump Hopper. Step:2. Then the truck pours the fresh concrete into a hopper, which is continuously rotating so concrete will not solidify.

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Pressure Drop Online-Calculator. Group: Straight pipes Pipe entrance Changes of section Bends Brandings of current Bellows Valves Check valves Nozzles and orifices Perforated plates Strainers and grids Diverse. Subgroup: circular rectangular Circular ring Channel Corrugated pipe Other form. Diameter of pipe D:

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Fig. 2.1-a: Steady-state pressure head curve of a pumping system e head curve Metres above sea level Length. 700 600 500 400 300 200 Metres above sea level [m] 500 1000 1500 2000 2500 Length of pipe [m] 0 Elevation of pipe h max PN Pipe h max WK h min WK h steady h min h steady in Fig. 2.1-b is the steady-state pressure head curve. Pressu-

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storage facility and will pump directly into the piping system. These pump stations may be a part of these other structures. Pumps which pump directly into transmission lines and distribution systems are sometimes called high lift pumps. Booster pumps may be located anywhere in the system to increase the pressure in the pipeline. Booster pump

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Concrete Ingredients Calculation. For Cement, Sand and Coarse Aggregate. This is a Volumetric Calculation. Assuming we need 2 m 3 of concrete for M20 Concrete Mix, (Mix Ratio, M20 = 1 : 1.5 : 3) Total Part of the Concrete = 1+1.5+3 = 5.5 Parts. Therefore, Cement Quantity = (Cement Part / Concrete Parts ) * Concrete Volume

Get price### Making Concrete Pumpable Concrete ... - Concrete Construction

Jan 28, 2020 Ruttura, who pumped for the construction of the World Trade Center, says, “If you’re pumping high-strength concrete with a water-cement ratio of 0.28, that’s not efficient; we were only able to get about 20 yards an hour.”. It can also put a lot of pressure on the hose clamps. Ruttura says the ideal is to “have at least 270 pounds of ...

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For silo design, additional local pressure which depends on eccentricity of discharge outlet, and equations which give approximate stress produced by this pressure are given in this 2010 publication. August 2011 Sub-committee for Design of Storage Tanks The Architectural Institute of

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Total Head on a Pump Handling Vapor-Free Liquid 6.42 Pump Selection for any Pumping System 6.47 Analysis of Pump and System Characteristic Curves 6.55 Net Positive Suction Head for Hot-Liquid Pumps 6.61 Part 3 Centrifugal Pumps and Hydro Power Minimum Safe Flow for a Centrifugal Pump 6.63 Selecting a Centrifugal Pump to Handle a Viscous Liquid 6.64

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Professor Giljum is working on a design project to rehabilitate a damaged 54-in diameter reinforced concrete force main (i.e. pressure sewer). A pumping plant discharges to both the 54- in force main and a parallel 60-in relief force main, which combine at three different points in the system. Briefly explain how to estimate what percentage of ...

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The virtual pumpability testing tool as developed should enable a more purposeful material design of pumpable concrete and pre-estimation of pumping

Get price### What Is A Concrete Pump Types Of Concrete Pumps

Step:1. The pumping operation starts with the discharge of the concrete, usually from a ready-mix truck that mixes concrete mix within its rotating drum. Concrete Dumping in Pump Hopper. Step:2. Then the truck pours the fresh concrete into a hopper, which is continuously rotating so concrete will not solidify.

Get price### Making Concrete Pumpable Concrete ... - Concrete Construction

Jan 28, 2020 Ruttura, who pumped for the construction of the World Trade Center, says, “If you’re pumping high-strength concrete with a water-cement ratio of 0.28, that’s not efficient; we were only able to get about 20 yards an hour.”. It can also put a lot of pressure on the hose clamps. Ruttura says the ideal is to “have at least 270 pounds of ...

Get price### Major Problems in Concrete Pumping Works: How to Avoid ...

🕑 Reading time: 1 minute The major problems that one encounters when pumping concrete are blockage of pipeline, and segregation and bleeding of concrete mix. Blockage is the failure of concrete to emerge at the end of the pipeline. It is characterized by an increase in pressure that can be observed on the pressure gauge. []

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pump will need to overcome a system pressure of 10.39 m. At the top level, the pump will only need to overcome a system pressure of 6.79 m. If a centrifugal pump were selected to achieve either the maximum or minimum head condition, this would likely result in either too much or

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Download Concrete Estimating Template in Excel with Concrete Calculator FREE. Here are six template for concrete estimating with concrete calculator. The template is based in ms excel and it includes following concrete quantity take-off template worksheets: 1. Footer Worksheet. 2.

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Professor Giljum is working on a design project to rehabilitate a damaged 54-in diameter reinforced concrete force main (i.e. pressure sewer). A pumping plant discharges to both the 54- in force main and a parallel 60-in relief force main, which combine at three different points in the system. Briefly explain how to estimate what percentage of ...

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Power is consumed by a pump, fan or compressor in order to move and increase the pressure of a fluid. The power requirement of the pump depends on a number of factors including the pump and motor efficiency, the differential pressure and the fluid density, viscosity and flow rate. This article provides relationships to determine the required pump power.

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Pressure head formula. P = (a * r * h) can be used to obtain a relationship between the heights of columns of different liquid which would develop the same pressure at any point. Thus, if h1 and h2 are the heights of the column of liquid of specific weight w1 and w2 require to develop the same pressure p1 at any point, then from p=arh,

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1. Incorrect pump head estimation. 2. Pump cavitation and loss of pumping ability, as caused by inadequate pump suction pressure. 3. Air in pump suction; as caused by tower pan vortex, pan drain down or faulty bypass. 4. Unstable pump operational points as caused by: (a) Improper application of tower bypass controls.

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Process furnace Shortcut method for efficiency estimation. Pressure Safety Valve Sizing tool - Pressure Gas flow. Pressure Safety Valve Sizing tool - Pressure Liquid flow ... Pump Power Calculation 3. Pipe Pressure Drop Calculation 4. Fluid

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Concrete ring well is a method that requires either a steel casing ring mould for casting the concrete rings on site or for precast rings to be purchased and transported from factory to construction site. ... the tank a distance of 50m to a single tap and the head loss at a flow of 11/ s should not exceed 10% of the average pressure. The pump ...

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Total Head on a Pump Handling Vapor-Free Liquid 6.42 Pump Selection for any Pumping System 6.47 Analysis of Pump and System Characteristic Curves 6.55 Net Positive Suction Head for Hot-Liquid Pumps 6.61 Part 3 Centrifugal Pumps and Hydro Power Minimum Safe Flow for a Centrifugal Pump 6.63 Selecting a Centrifugal Pump to Handle a Viscous Liquid 6.64

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booster pumping stations. The main items of work to be constructed include, but are not limited to the following:- (a) Excavation for all structures and pipework. (b) Construction of concrete pump pit. (c) Manufacture and installation of aluminium pump pit covers.

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