Thermal Efficient Foam Concretes of a New Generation for Low-Rise Construction

Slavcheva, G.S.; Chernyshov, E. M.; Novikov, M.V.

doi:10.31659/0585-430x-2017-750-7-20-24

Cited by 7 publications

(7 citation statements)

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“…It follows from the above that one of the most important formulation parameters for designing the composition of foam concrete mixes is the ability of the system "water: surfactant" to form and for a long time, not less than 2...3 hours to maintain stable foam structures. It is known [20] that the CMC of most anion-active surfactant is changed in the range of 10 -4 ...10 -2 mol/dm 3 . The concentration of surfactant in foaming agents varies in the range of 20 ... 30% by weight.…”

Section: Resultsmentioning

confidence: 99%

“…-the law of the Russian Federation № 261 "on resource..." requires a regular increase in the energy performance of buildings; -foam concrete is made from raw materials and highly dispersed mineral industry waste [1,2]; -these concretes are able to combine the properties of thermal insulation and structural materials [3,4];…”

Section: Introductionmentioning

confidence: 99%

“…-technology refers to resource-and energy-saving [5,6]; -they are fire-proof, biostable and energy-efficient [7,8,9]. However, the production of gas-filled concrete materials with a minimum number of defects in the inter-wall partitions and a given density is one of the most important problems of modern concrete technology because until now science has not provided the practitioners with a sufficiently reliable method of designing their compositions.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of the Ratio between Water and Foam Concentrate at the Desired Density in the Foam Concrete Mixes

Morgun

2018

MSF

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The scientifically grounded and experimentally confirmed features of formation of stable foam concrete mixes in time are considered. It is shown that the formation of such gas-filled structures is possible only with water content, the value of which is sufficient for wetting the surface of all solid dispersed particles of raw materials, the formation of foam films and the processes of adsorption and chemical hydration of binder particles. It is proved that taking into account the value of the aeration potential of the foaming agent, it is possible to obtain stable foam concrete mixtures of a given density

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of the Ratio between Water and Foam Concentrate at the Desired Density in the Foam Concrete Mixes

Morgun

2018

MSF

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“…3). Table 2 aftereffects of fine-grained (a) and micro-grained (b) porous concrete at different levels of compressive stress: ------porous concrete using the example of a grade D1600 loaded at 28 days of age; ----aerated concrete D1200, for the first time loaded at the age of 15 years with voltage σ=0.3Rb The growth rates of these indicators reached 1.35 and 1.24 respectively for fine-grained concrete and 1.54 and 1.38 for micro-grained concrete [8]. To describe kinetics of their growth during hardening (aging) aerated concrete, acceptable solutions provide dependencies (2) and (3) with corresponding quantitative parameters:…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of porous concrete during compression

Novikov

2024

M&T

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Results of the experimental studies of the force resistance and deformation of compressed elements from porous concrete of 1200-1600 kg/m3 density of various structural modifications (fine grain and micro grain) are presented. On the basis of research date, mechanical properties are complexly characterized; a criterion number of strength and deformation characteristics of porous concretes with due regard for the influence of longtime processes due to concrete hardening and external force factors is proposed. On the basis of data on the long-term resistance of porous concrete and change in its strength in time, calculation characteristics and coefficients of operation conditions of porous concrete are established for calculation and design of structures. It is shown that according to structural indicators, porous concretes meet normative requirements and occupy the intermediate place between cellular and light concretes of equal strength with porous fillers.

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“…Practical using of foam concrete constrained by the lack of information about physical and mechanical characteristics which necessary for rationing and calculation structures, especially involving with long term exposure to loads. In this regard, the study of creep and long durability of the compressed elements of foam concrete is particularly important and is the subject of this study [1][2][3][4][5]10].…”

Section: Introductionmentioning

confidence: 99%

Creep and Long-Time Strength of Compression Elements from Foam Concrete

Novikov

Prokshits

Goikalov

2018

SSP

Self Cite

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In this article discusses the mechanical properties of foam concrete, which submitted based on the experimental data of long force resistance and deformation of compression elements from foam concrete. Also submitted criterion range of strength and deformation characteristics of foam concrete different structural modification with taking into account the permanently acting load, which necessary for calculation and design structures of buildings. In article such characteristics of foam concrete as durability and deformability at the age of 28 days by results of short-term tests and also influence of average density and a type of structure on its durability and deformability are considered. Change of mechanical properties of foam concrete in time by results of short-term tests is analyzed and studied. Experimental and theoretical researches which have in turn allowed to recommend for rationing of value of settlement characteristics the foam of concrete taking into account their variability, aging and duration of action of loading are executed.

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Thermal Efficient Foam Concretes of a New Generation for Low-Rise Construction

Cited by 7 publications

References 0 publications

The Effect of the Ratio between Water and Foam Concentrate at the Desired Density in the Foam Concrete Mixes

The Effect of the Ratio between Water and Foam Concentrate at the Desired Density in the Foam Concrete Mixes

Mechanical properties of porous concrete during compression

Creep and Long-Time Strength of Compression Elements from Foam Concrete

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