Feasible use of Recycled Foam Concrete in Cement Mortar

STERIC EFFECT IN THE MATRIX OF THE FOAM CONCRETE

Modern Technologies and Scientific and Technological Progress ◽

10.36629/2686-9896-2020-2018-1-121-122 ◽

2020 ◽

Vol 2018 (1) ◽

pp. 121-122

Author(s):

Andrey Savenkov ◽

Ol'ga Yazina ◽

Alena Ploskonosova ◽

Egor Stafievskiy

Keyword(s):

Compressive Strength ◽

Steric Effect ◽

Cement Mortar ◽

Foam Concrete ◽

The Matrix

The phenomenon of the steric effect in cement mortar of a hardening matrix of foam concrete is considered. The amount of reduction in compressive strength in a matrix of foam concrete of heat-insulating grades by density.

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Rheological characteristics of the binder for foam concrete with a complex of mineral modifiers

Transaction Kola Science Cetnre ◽

10.37614/2307-5252.2021.2.5.037 ◽

2021 ◽

Vol 12 (2-2021) ◽

pp. 180-184

Author(s):

D. D. Netsvet ◽

◽

V. V. Nelubova ◽

Keyword(s):

Portland Cement ◽

Cement Mortar ◽

Point Of View ◽

Rheological Characteristics ◽

Foam Concrete ◽

Combined Use ◽

Cement System ◽

Mineral Additives ◽

Mixing Water ◽

Modifying Additive

The paper considers the effect of mineral additives on the rheological characteristics of a binder for foam concrete. The compositions in the study were divided into two groups: based on nanostructured binder (NB) and based on cement. For the compositions of the first group portland cement is proposed as a modifying additive,for the compositions of the second group NB and anhydrite were used as modifying additives. It has been shown that the introduction of cement into NB increases the viscosity due to an increase in the concentration of large-sized particles, while the combined use of nanostructured binder and anhydrite as modifiers of the cement system helps to reduce the viscosity of the cement mortar and increase its mobility, which reduces the amount of mixing water. From a technological point of view, this will make it possible to obtain materials with a rational pore structure by optimizing porosity processes.

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Testing of Technological Properties of Foam Concrete

Materials Science Forum ◽

10.4028/www.scientific.net/msf.865.229 ◽

2016 ◽

Vol 865 ◽

pp. 229-233 ◽

Cited By ~ 1

Author(s):

Karel Mikulica ◽

Iveta Hájková

Keyword(s):

Fly Ash ◽

Cement Mortar ◽

Physical And Mechanical Properties ◽

Thermal Coefficient ◽

Technological Properties ◽

Foam Concrete ◽

Insulating Materials ◽

Fine Grained ◽

Thermal Insulating ◽

Cement Mortars

At present the demand for thermal insulation materials is bigger than ever before. Also cement foam or foamconcrete, the mixture of cement mortar and technical foam can be one of such materials. Due to its liquid consistency this material can be simply applied in fresh status on uneven board surfaces where application of common thermal insulating materials would be very complex and time consuming.This work is involved in use of fly ash in foamconcrete and polystyrene-concrete compositions; these are very lightweight concretes produced from fine-grained cement mortars by its foaming using foamable admixtures. The objective of this work is to verify whether final physical and mechanical properties are improved when fly ash is applied within the mixture, in particular, the compressive strength thermal coefficient and stability after 12 hours from mixing.

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Testing and Optimization of Production of Technical Foam for the Production of Cement Foam

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.276.254 ◽

2018 ◽

Vol 276 ◽

pp. 254-258

Author(s):

Karel Mikulica ◽

Dušan Dolák

Keyword(s):

Mechanical Properties ◽

Czech Republic ◽

Construction Industry ◽

Building Materials ◽

Cement Mortar ◽

Physical And Mechanical Properties ◽

Foam Concrete ◽

The Czech Republic ◽

Insulation Materials ◽

The Many

In the current construction industry, great importance is given to the usage of thermally insulating building materials. One of the many such materials can be a cement foam or foam concrete, a mixture of cement mortar and technical foam. This material can be, due to its consistency right after mixing, applied to uneven horizontal surfaces where usage of conventional thermal board insulation materials would be complicated. This paper discusses the methodology of testing of the physical and mechanical properties of foaming additives such as strength, density, foaming number and half-separability of technical foams. Then this methodology was subsequently verified on the five commonly used foaming additives in the Czech Republic.

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The Experiment and Theoretical Analysis of Reusing Waste Cement Mortar

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.71-78.3595 ◽

2011 ◽

Vol 71-78 ◽

pp. 3595-3599

Author(s):

Xiao Xiong Zha ◽

Kai Zhang

Keyword(s):

Theoretical Analysis ◽

Compression Strength ◽

Cement Mortar ◽

Concrete Block ◽

Dry Density ◽

Practical Application ◽

Foam Concrete ◽

Concrete Testing ◽

First Time

This paper presents the idea of mixing waste cement mortar into foam concrete block, and gets the foam concrete testing models with the values of dry density at 700 to 1000 kg/m3 , and the compression strength at 0.5-2.5MPa, which are met to foam concrete block standard. At the same time, the power formulas for calculating the dry density and compression strength of concrete cubes doped with waste cement mortar have been brought up, which are coincided with the experiment results well. An initial discussion about microcosmic composition has also been given, which has rather high practical application values since it offers experimental and theory foundations for reusing the waste cement mortar. The innovation significance should not be neglected, since it is the first time doing research on these aspects.

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