Influence of Superplasticizer S-3 on the Technological Properties of Concrete Mixtures

Abstract

In the process designing of concrete arise the problem - compatibility polycarboxylates with cement different parties. In some cases, when you receive the next batch of cement concrete mobility decreased sharply. Additive had to pick again. When choosing supplements examined its effect on the technological properties of concrete mixtures: workability, resistance to water gain, air entrainment. Test results showed that the addition of superplasticizer based on sulfonated naphthalene-formaldehyde resins (SNF) on the effectiveness of the plasticizing action is not inferior hyperplasticizer based polycarboxylate. Unlike polycarboxylates SNF additive has good compatibility with various cements, which provides stability regardless of the characteristics of the concrete mix to the vibrations of the chemical composition of cement. With increasing content of cement in the concrete superplasticizer efficiency increases, both in terms of workability, and in respect water gain of a concrete mixture.

The Strength and Strain of High-strength Concrete Elements with Confinement and Steel Fiber Reinforcement Including the Conditions of the Effect of Elevated Temperatures

“…Modifier proportion (in % of the weight) is: silica fume in a composition of SicaFume (20%), fine ash-and-slag composite from the Uglegorskaya Thermal Power Plant (30%), fluidifier [14] (2%) and fly ash from the Zuyevskaya Thermal Power Plant (48%).…”

“…High-strength concrete with organic-mineral modifier 10-01 MB [13] in the amount of 20% of cement weight containing silica fume, fly ash, fluidifier [14] and concrete hardening controller has been used in the tests. Concrete mix components: 490 kg/m 3 of Portland cement 42.5 (M500); 549 kg/m 3 of silica sand with the fineness modulus of 1.9; 1100 kg/m 3 of crushed granite fractions 5...20 mm; 153 l/m 3 of water.…”

The Effects of Modifying Additives Used for Concrete in Constructing Monolithic Reinforced Concrete Buildings

“…Barabanshchinok and M.V. Komarinsky found that some additives are not combined with certain types of cements: they do not show required properties [10]. In this regard, it is necessary to select the type of an additive depending on the type of cement.…”

Hydraulic Activity of Mineral Fillers of Manufacturing Origin Mixed with Cement

“…Lesovik, S.A.Yu. Murtazaev [16][17][18][19][20][21][22][23][24][25], the use of «inert» dispersed MF in concrete mixtures not only does not reduce the strength of the filled cement binder, but also in some cases even leads to its hardening.…”