Properties of modified dry masonry mixtures for effective masonry units

Semenov, V. S.; Rozovskaya, Tamara

doi:10.1088/1757-899x/71/1/012042

Cited by 6 publications

(8 citation statements)

References 2 publications

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“…These systems can be created with or without an additional layer of effective thermal insulation. As known, to ensure the thermal homogeneity of such structures, lightweight masonry mortars (dry mixes) are used, whose properties -medium density, thermal conductivity, strength should be in accordance with the basic material of the wall (Table 1) [1][2].…”

Section: Introductionmentioning

confidence: 99%

Properties of lightweight dry masonry mixtures for winter conditions

Semenov

2019

E3S Web Conf.

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The construction of building envelopes using effective small-piece elements requires the use of lightweight masonry mortars, obtained, as a rule, from dry mixtures. One of the most effective ways to obtain such mortars is the introduction of hollow ceramic microspheres into their composition as a lightweight filler. For the climatic conditions of the Russian Federation, it is relevant to use dry masonry mixtures in the winter version, which gain strength at negative temperatures. The main purpose of this work was the development of optimal compositions of modified dry masonry mixes with hollow ceramic microspheres and antifreeze additives for use in winter conditions. Determination of the main properties of dry mixes and masonry mortars was carried out according to standard methods. X-ray diffraction and scanning electron microscopy were used to research of the microstructure and phase composition of the materials. As a result of this research, the compositions of the lightweight dry masonry mixtures for winter conditions were developed. The main properties of the mortar mixtures and mortars were determined and structure and composition of new phases of cement stone were studied as well.

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Section: Introductionmentioning

confidence: 99%

Properties of lightweight dry masonry mixtures for winter conditions

Semenov

2019

E3S Web Conf.

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“…The complexity of lightweight mortars determines mainly the use of dry mixes for their production. Such mortars (dry mixes) are expensive, in some cases they have only minimal physical-andmechanical and performance properties [3]. The average density of the masonry mortar should be close to the average density of the wall material, and the compressive strength should be by 20 ... 25% higher than the strength of the wall material, which is a condition for ensuring the design strength of the building fencing.…”

Section: Introductionmentioning

confidence: 99%

“…Traditionally, such lightweight masonry mixtures are obtained by introducing lightweight aggregates into their composition -expanded perlite or vermiculite sands, foam glass or expanded polystyrene granules, etc. [3][4].…”

Section: Introductionmentioning

confidence: 99%

“…One of the most effective methods of obtaining such mortars is the introduction of hollow ceramic microspheres and a complex of modifying additives into their composition [14]. Note that the ceramic microspheres are, in fact, industrial waste product [3]. Therefore, the further development of this subject-matter is relevant and allows to achieve the indicators of the Strategy for the development of the construction materials industry in the Russian Federation until 2030improving energy efficiency and availability of low-cost building materials, using waste products as raw materials.…”

Section: Introductionmentioning

confidence: 99%

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Structure and properties of masonry mortars based on ceramic microspheres

Semenov

2018

MATEC Web Conf.

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Modern requirements in the field of energy and resource saving determines the need to apply effective fencing structures. To ensure the thermal homogeneity of the structures erected with small-piece masonry elements (ceramic and light-weight concrete units etc.), it is necessary to use lightweight mortars. One of the most effective methods to obtain such mortars is the introduction of hollow ceramic microspheres as a filler into their composition. The purpose of this work is studying of the composition and structure of a cement masonry mortar with hollow ceramic microspheres and modifying additives in correlation with its properties. The methods of thermogravimetric analysis, scanning electron microscopy, X-ray diffraction and standard test methods for the masonry mortars were used. The effect of the structural characteristics of the composite on the properties of final product was analyzed. It is established that the microstructure of the modified mortar samples is more compact in compare with basic composition, and the surface of the microspheres is covered by the products of the chemical interaction of its walls with the cement matrix. The aforesaid research allowed to obtain the high-performance lightweight mortars with hollow ceramic microspheres.

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“…At present, the cement compositions using the hollow microspheres (glass, ceramic (aluminosilicate), polymeric) as a light-weight aggregate are widely developed [6][7][8][9]. The spherical shape of this aggregate granules provides for greater plasticity of the mortars and its higher compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Properties of dry masonry mixtures based on hollow aluminosilicate microspheres

Vyacheslav

2017

MATEC Web Conf.

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Abstract. At present, there is a steady increase in the volume of housing construction in the Russian Federation. The modern trends in the field of energy and resource saving determine the need of the use of efficient building materials that ensure the safety, comfort and minimum cost of housing construction. Among the materials, often used for erecting of fencing structures, it is possible to note effective small-piece elements (ceramic and light-weight concrete units, etc.). To ensure the solidity of such structures, it is necessary to use the masonry mortars whose properties correspond to those of the main wall material. The existing dry mixes for obtaining of such mortars are expensive and often do not meet the minimum physical-and-mechanical and exploitation requirements. The solution of this problem is the usage of the hollow ceramics (aluminosilicate) microspheres as a filler for such mixes. The article presents the results of studies of the main physical-and-mechanical and exploitation characteristics of dry masonry mixes with hollow ceramics microspheres modified with various chemical additives. The effect of the compounding factors on the average density and strength of dry masonry mixes was studied. The compositions have been optimized by the methods of mathematical planning.

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Properties of modified dry masonry mixtures for effective masonry units

Cited by 6 publications

References 2 publications

Properties of lightweight dry masonry mixtures for winter conditions

Properties of lightweight dry masonry mixtures for winter conditions

Structure and properties of masonry mortars based on ceramic microspheres

Properties of dry masonry mixtures based on hollow aluminosilicate microspheres

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