Cement Superplasticizer Compatibility The Concrete Portal

Cement - Superplasticizer Compatibility - The Concrete Portal

Compatibility between cements and superplasticizers is affected by a combination of reasons, including cement composition, admixture type and dosage, concrete mixture proportions etc. Aïtcin [1998] describes the complicated nature of the interaction using the

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Cement/Superplasticizer/Air-Entraining Agent Compatibility

Sep 01, 1994  Since mixed results have been reported when superplasticizer is added to air-entrained concrete at the jobsite, a research program was undertaken to study the compatibility between three air-entraining agents, four water reducers, and one polynaphthalene sulfonate superplasticizer currently used in Eastern Canada.

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A Study on the Cement Compatibility of PCE Superplasticizers

Jun 01, 2015  Title: A Study on the Cement Compatibility of PCE Superplasticizers Author(s): A. Lange and J. Plank Publication: Symposium Paper Volume: 302 Issue: Appears on pages(s): 401-414 Keywords: admixture; adsorption; cement dispersion; ettringite; high range water reducer; morphology; nano-size; polycarboxylate Date: 6/1/2015 Abstract: It is well established among concrete producers

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Compatibility of Polycarboxylate Superplasticizers with ...

Sep 01, 2003  The low alkali cement shows lower sensitivity to differences in structure of polycarboxylate superplasticizers than cements with higher alkali content. The adsorption of polycarboxylate polymers on cement is driven by the structural features of the polymer and can be directly related with the flow of the cement paste.

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Compatibility assessment of commercial cements and ...

performance when a specific combination of cement and superplasticizers is used in concrete. Common problems occurred are delayed setting, flash setting time, rapid slump loss, improper strength gain, cracking etc. which are due to 2 the incompatibility between cement and superplasticizers. It also affects the hardened concrete properties.

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Cement and Superplasticizer Combinations: Compatibility ...

Dec 04, 2004  The C 3 A content, the soluble (alkali) sulphate content, and the fineness of the cement, which influence the adsorption rate of the superplasticizers on the cement particles, are among the key factors that control the compatibility and the robustness of cement-superplasticizer combinations, especially for polysulfonated admixtures. Based on ...

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Cement and Superplasticizer Combinations: Compatibility ...

Dec 04, 2004  The C 3 A content, the soluble (alkali) sulphate content, and the fineness of the cement, which influence the adsorption rate of the superplasticizers on the cement particles, are among the key factors that control the compatibility and the robustness of cement-superplasticizer combinations, especially for polysulfonated admixtures. Based on ...

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Evaluating Superplasticizer Compatibility in the ...

Evaluating Superplasticizer Compatibility in the Production of High-Performance Concrete using Portland Pozzolana Cement CEM II/B-P Thomas Omollo Ofwa1, David Otieno Koteng’2, John Nyiro Mwero3 1MSc. Student, Department of Civil Construction Engineering, University of Nairobi, P. O. Box 30197-00100 Nairobi, Kenya

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Compatibility of superplasticizers with different cements ...

Jul 01, 2000  The effect of dosage of superplasticizers on the setting time of various cements was determined as per BIS 4031 (1988). The results are given in Table 6.Concrete cubes of 150 mm size with mix design (1:1.2:2.8, cement content=490 kg/m 3, coarse/fine aggregate ratio 30:70) bearing all the superplasticizers at the dose level as recommended by the manufactures were cast at a slump of

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COMPATIBILITY STUDY OF SUPERPLASTICIZERS WITH

concrete. In India superplasticizers are used in the construction of high rise building, long span bridges and ready mix concrete plant. But same superplasticizer shows different fluidity with different in same water cement ratio. So study of compatibility of cement and superplasticizer is important. According to the chemical content ...

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Study of the Admixture-cement Compatibility for the ...

cement particles apart due to electrostatic repulsions. Thus the fluidic property of the concrete increases and the concrete is workable even at lower water–cement ratios. [The Concrete Portal (2013)] 2.3 Properties of the superplasticizers used in this study Following table shows the name and the performance test data for all the four BASF

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Superplasticizers for Concrete - MDPI

Jul 07, 2017  cement/admixture compatibility. This research is devoted to the study of an innovative superplasticizer for concrete with higher efficiency in terms of water reduction with respect to polycarboxilate-based admixtures and characterized by a higher compatibility upon different cement types/production batches than NSF-based admixtures. 2.

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Selection of Superplasticizers for High-Performance Concrete

The first moment consumption of Superplasticizer molecules after the mixing is qualified as the cement/Superplasticizer compatibility. It is very difficult to make high-performance concrete with a very low water-cement ratio, that it will still have a slump value of 50mm 30 minutes with an initial slump value of 200mm.

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Study of the Admixture-Cement Compatibility for Self ...

The application of concrete admixtures and the advancement of admixture technology have promoted the development of numerous new concrete technologies in the past few decades, some of the properties such as high strength concrete, retention of slump resulted in high durable concrete could be made possible with the addition of superplasticizers based on Naphthalene formaldehyde

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The Concrete Portal

INTRODUCTION: Cement concrete is only next to water in terms of the amount of material used on our planet. Over hundreds of years, concrete has become the material of choice for constructing residential and commercial buildings, infrastructural facilities such as highways, dams and bridges, canals, ports and other important facilities.

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Compatibility of portland cement and polycarboxylate-based ...

Compatibility of portland cement and polycarboxylate-based superplasticizers in high-strength concrete for precast constructions MCE. Magazine of Civil Engineering Peter the Great St. Petersburg Polytechnic University Since 2008 ISSN 2712-8172 Английский ...

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International Concrete Abstracts Portal

Sep 01, 1994  Absolute value of zeta potential of cement particles with the superplasticizer increased with elapsed time until 90 min after mixing, which explains the high-slump-retention capacity of the concrete. Plasticizing effects of superplasticizers were more pronounced for concretes with fly ash or blast furnace slag as blending agents.

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Rheology - The Concrete Portal

Rheology measurements on concrete indicate that it is reasonable to approximate the concrete flow behaviour using a Bingham model1,2,9. The Bingham model, along with other common rheological models, are shown in Fig 1. Shear yield stress (y-axis intercept), τo, indirectly measures inter-particle friction, while the viscosity µ (slope of the ...

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Strengthening of concrete structures with cement based ...

working environment, compatibility and permeability. Substituting the epoxy adherent with a cement based bonding agent will render a strengthening system with improved working environment and better compatibility to the base concrete structure. This study gives an overview of different cement based

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CONCRETE QUALITY CONTROL DURING CONSTRUCTION -

The same design mix along with cement brand 3 with superplasticizer (B) is followed in the construction. Site cube results are given in Table 4. CONCLUSION 1. If we are producing concrete into superplasticizer, then we can achieved 11% more strength compare to normal concrete with respect to about 4% increments in cost per cubic meter.

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COMPATIBILITY STUDY OF SUPERPLASTICIZERS WITH

concrete. In India superplasticizers are used in the construction of high rise building, long span bridges and ready mix concrete plant. But same superplasticizer shows different fluidity with different in same water cement ratio. So study of compatibility of cement and superplasticizer is important. According to the chemical content ...

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Compatibility of superplasticizers with cements different ...

May 01, 2000  Three different cement contents of 300, 350, and 400 kg/m 3 were determined and admixture was used in three different proportions by weight of each cement as 1%, 2%, and 3%. Control specimens without admixture were prepared for each cement content so as to be able to observe the contribution of the superplasticizer to the compressive strength of concrete.

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Study of the Admixture-cement Compatibility for the ...

cement particles apart due to electrostatic repulsions. Thus the fluidic property of the concrete increases and the concrete is workable even at lower water–cement ratios. [The Concrete Portal (2013)] 2.3 Properties of the superplasticizers used in this study Following table shows the name and the performance test data for all the four BASF

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(PDF) Evaluating Superplasticizer Compatibility in the ...

Compatibility between cement and SP of 12.5mm, silica fume grade NR95D imported from should be established as this has critical effect on China, seven different superplasticizers SP1 to SP7 workability retention and other properties of available locally, and potable tap water from the concrete.

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Cement Super Plasticizers Compatibility

The term incompatibility refers to the adverse effect on performance when a specific combination of cement and superplasticizer is used. Common problems include flash setting, delayed setting, rapid slump loss, improper strength gain, etc. These issues in turn could affect the hardened properties of concrete, primarily strength and durability.

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Study of the Admixture-Cement Compatibility for Self ...

The application of concrete admixtures and the advancement of admixture technology have promoted the development of numerous new concrete technologies in the past few decades, some of the properties such as high strength concrete, retention of slump resulted in high durable concrete could be made possible with the addition of superplasticizers based on Naphthalene formaldehyde

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CBD-203. Superplasticizers in Concrete - NRC-IRC

(b) With 0.3 per cent superplasticizer. (c) With 0.2 per cent lignosulphonate. (d) With 0.4 per cent lignosulphonate. The fluidizing effect achieved by the addition of 0.3 per cent superplasticizer to cement formed at a water: cement ratio of 0.3 is illustrated in Figure 1a, Figure 1b, Figure 1c, Figure 1d.

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Rheology - The Concrete Portal

Rheology measurements on concrete indicate that it is reasonable to approximate the concrete flow behaviour using a Bingham model1,2,9. The Bingham model, along with other common rheological models, are shown in Fig 1. Shear yield stress (y-axis intercept), τo, indirectly measures inter-particle friction, while the viscosity µ (slope of the ...

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Superplasticizer Admixture Fritz-Pak Supercizer 7 ...

Fritz-Pak Supercizer 7 is a dry powdered admixture, packaged in a patented, ready-to-use, water-soluble bag. It is a superplasticizer admixture, uniquely formulated to provide maximum water reduction for high early strengths while producing stronger, more durable concrete and reduces the incidence of blowouts.

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Reactive Powder Concrete - The Concrete Portal

Reactive Powder Concrete (RPC) was developed in France in the early 1990s and the world’s first Reactive Powder Concrete structure, the Sherbrooke Bridge in Canada, was erected in July 1997. Reactive Powder Concrete (RPC) is an ultra high-strength and high ductility cementitious composite with advanced mechanical and physical properties.

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Investigation of the Suitability of Water Demand Studies ...

Sep 22, 2020  Kannan Rajkumar PR, Ravichandran PT, Ravi JK, Krishnaraj L (2016) Investigation on the compatibility of cement paste with SNF and PCE based superplasticizers. Indian J Sci Technol 9(34) Google Scholar

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Impact of zeta potential of early cement hydration phases ...

Apr 01, 2007  Some key cement factors that control the compatibility between naphthalene-based superplasticizers and ordinary Portland cements Sixth CANMET/ACI International Conference on Superplasticizers and other Chemical Admixtures in Concrete, Nice (France), Supplementary Papers ( 2000 ) , pp. 33 - 54

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Poly(carboxylate ether)-based superplasticizer achieves ...

Jan 30, 2017  To assess the compatibility of superplasticizers and cement, we carried out a mini slump test as a function of dosage of PCEs 31. In this test, a

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Influence of viscosity enhancing agent on rheology and ...

It is concluded that addition of VEA influences compatibility between cement and superplasticizer. Because addition of VEA may cause decrease in compressive strength, the assessment of compatibility of VEA - cement - superplasticizer system should be performed in relation not only to rheological properties, but also to compressive strength.

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