Results 261 to 270 of about 18,482 (315)
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Effect of superplasticizers on the hydration of cement
Cement and Concrete Research, 1992Abstract Hydration of Portland Cement in the presence of two different types of superplasticizers, namely Melment and Lomar-D, was studied by using different experimental techniques. Both of the superplasticizers increase the workability and reduce the water content. Melment increases the compressive strength whereas Lomar-D decreases it.
N.P. Singh, Reetika Sarvahi, N.B. Singh
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Construction and Building Materials, 2020
Abstract Polycarboxylate superplasticizer (PCE) and aliphatic superplasticizer (AS) are widely used water-reducing agent in concrete. In actual practice, the addition of AS has been developed as a common way to alleviate the bleeding and segregation of concrete plasticized by PCE, while the main reason for this phenomenon is not clear.
Baoguo Ma +7 more
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Abstract Polycarboxylate superplasticizer (PCE) and aliphatic superplasticizer (AS) are widely used water-reducing agent in concrete. In actual practice, the addition of AS has been developed as a common way to alleviate the bleeding and segregation of concrete plasticized by PCE, while the main reason for this phenomenon is not clear.
Baoguo Ma +7 more
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Construction and Building Materials, 2008
Abstract Two kinds of aminosulfonate–phenol–formaldehyde condensate superplasticizers AS based on sodium p -aminobenzenesulfonate and SDMAS based on sodium p - N , N -dimethylaminobenzenesulfonate were synthesized. The properties of cementitious materials superplasticized with the synthesized superplasticizers such as the hydration heat and ...
Zhenfei Wang +5 more
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Abstract Two kinds of aminosulfonate–phenol–formaldehyde condensate superplasticizers AS based on sodium p -aminobenzenesulfonate and SDMAS based on sodium p - N , N -dimethylaminobenzenesulfonate were synthesized. The properties of cementitious materials superplasticized with the synthesized superplasticizers such as the hydration heat and ...
Zhenfei Wang +5 more
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Control of slump loss in superplasticized concrete
Materials and Structures, 1989The slump loss characteristics of concrete containing different amounts of sulphonated melamine formaldehyde (SMF) admixed with two types of polymers were investigated. The addition of 2% polymer to SMF retarded the slump loss. The setting times although retarded were found to satisfy the requirements of the ASTM standards.
Ramachandran, V. S. +2 more
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Fatigue Behavior of Superplasticized Concrete
Cement, Concrete, and Aggregates, 1985Abstract Although many studies have been conducted on the physical properties of superplasticized concrete, very little research has been reported on the fatigue properties of superplasticized concrete. The purpose of this study was to determine the fatigue properties of concretes with superplasticizers and compare these properties with ...
F. W. Klaiber +2 more
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CO2 emission of polycarboxylate superplasticizers (PCEs) used in concrete
Journal of Cleaner Production, 2023Christopher Schiefer, Johann Plank
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Mechanism study of effect of superplasticizers on the fluidity of alkali-activated materials
Materials Structure, 2023Zirui Fan +3 more
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The Influence of Superplasticizers on the Dissolution of C3S
SP-262: Ninth ACI International Conference on Superplasticizers and Other Chemical Admixtures, 2009This paper describes how the hydration of tricalcium silicate (C3S), the major component of portland cement, determines setting and strength of concrete. Setting of portland cement pastes (that is, concretes) is strongly affected by the use of superplasticizers (SP).
C RoBler, T Sowoidnich
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Compatibility of superplasticizers with different cements
Construction and Building Materials, 2000Abstract The incompatibility between cement and chemical admixtures has increased over the last decade. Specifications calling for the use of admixtures in concrete often results in strange occurrences, i.e. rapid set, retardation, accelerated stiffening, etc.
S.K. Malhotra +2 more
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