Study on concrete pumpability combining different Related Information

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Influence of Aggregate Volume Fraction on Concrete Pumping

Aug 25, 2019 · Secrieru E, Fataei S, Schröfl C, Mechtcherine V (2017) Study on concrete pumpability combining different laboratory tools and linkage to rheology. Constr Build …

Influence of Sisal Fibre on the Properties of Foam Concrete

Jan 28, 2018 · REFERENCES [1] G. Indu Siva Ranjani and K. Ramamurthy "Analysis of the Foam concrete Generated Using Surfactant Sodium Lauryl Sulfate" International Journal of Concrete Structures and Materials Vol.4, , pp. 55~62, June 2010 [2] C.G. Puttappa, H.S Raghavendra, K.U. Muthu "Mechanical Properties of Foamed Concrete" ICCBT 2008 - A - (43

Materials | Free Full-Text | Numerical Study on Concrete

The use of self-consolidating concrete and advanced pumping system enables efficient construction of super high-rise buildings; however, risks such as clogging or even bursting of pipeline still exist. To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems.

Mix Design and Pumped Concrete - Civil Engineering Portal

Pumped concrete may be used for most all concrete construction, but is especially useful where space or access for construction equipment is limited. 2. Although the ingredients of mixes placed by pump are the same as those placed by other methods, depending quality control, batching, mixing, equipment and the services of personnel with

Experimental Study Report on Use of Fly Ash In High Grade

Experimental Study Report on Use of Fly Ash In High Grade Ready Mixed Concrete Mr. Amol P. Titarmare, Prof. Shri R.S.Deotale, Mr. Sanjay B Bachale Abstract— Ready Mixed Concrete is defined as the concrete delivered in plastic condition and requiring no further treatment before being placed in position in which it is to set and harden.

Mixed-Methods Research Methodologies

Studies that are products of the pragmatist paradigm and that combine the qualitative and quantitative approaches within different phases of the research process. (Tashakkori & Teddlie, 2008, p.22). Steven R. …

Best Practices for Concrete Pumping

A three-phase research study was carried out to (1) investigate performance of pumped concrete in field conditions, (2) identify concrete properties affecting pumpability, and (3) assess the effects of pumping on the concrete air void system.

Strength and Workability Characteristics of Concrete by

Feb 01, 2012 · Compressive strength of normal concrete at the age of 7 and 28 days . Among the super plasticizers, SNP 3 gave better slump results when compared to other t hree super plasticizer s. This gives better pumpability of concrete. 25 samples have been selected for the present study. The maximum, minimum and average 7 and 28 days

Best practices for concrete pumping.

A three-phase research study was carried out to (1) investigate performance of pumped concrete in field conditions, (2) identify concrete properties affecting pumpability, and (3) assess the effects of pumping on the concrete air void system.

Impact of the pumping process on the properties of

Oct 15, 2019 · Secrieru E, Fataei S, Schröfl C and Mechtcherine V 2017 Study on concrete pumpability combining different laboratory tools and linkage to rheology Construction and Building Materials 14 451-61. Crossref Google Scholar

Practical Tribometer to Estimate Pumpability of Fresh Concrete

study the influence of the concrete composition on the resulting interface friction and its parameters, namely, viscous constant and interface yield stress. The results show that the increase in the cement paste volume, the water per cement ratio and the proportioning in superplasticizer support the concrete pumpability. The

CN103042603A - Method for controlling concrete precooling

The invention provides a method for controlling concrete precooling slump by monitoring current intensity of a stirrer. As for concrete at a certain mix proportion, if batch charge is the same, a slump value of the concrete is smaller, the concrete is thicker, the placeability of the concrete is poor, stirring resistance to a stirrer shaft is greater, the power consumed by the stirrer shaft is

Testing pumpability of concrete using Sliding Pipe

Study on concrete pumpability combining different laboratory tools and linkage to rheology. Article. In other studies, pumpability has been quantified through tribometer testing,

Relationships between concrete composition and boundary

This study pays attention on the use of empirical models that are established from the experimental data to evaluate the concrete pumpability. The purpose of the study is to reduce the amount of

Study on concrete pumpability combining different

Study on concrete pumpability combining different laboratory tools and linkage to rheology

PUMPABLE CONCRETE AND CONCRETE PUMPING - ScienceDirect

Jan 01, 1976 · A major study of concrete pumping has recently been carried out. This study includes an examination of reference literature, theoretical reflections on the mechanics of concrete transport through pipes, measurements of pump pressure when pumping various concrete mixes under pumping conditions of varying degrees of difficulty, a study of the factors which influence pumpability and of …

Mix Design and Pumped Concrete - Civil Engineering Portal

Pumped concrete may be used for most all concrete construction, but is especially useful where space or access for construction equipment is limited. 2. Although the ingredients of mixes placed by pump are the same as those placed by other methods, depending quality control, batching, mixing, equipment and the services of personnel with

The Effect of Aggregate Properties on Concrete

The Effect of Aggregate Properties on Concrete Concrete is a mixture of cementious material, aggregate, and water. Aggregate is commonly considered inert filler, which accounts for 60 to 80 percent of the volume and 70 to 85 percent of the weight of concrete.

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 …