Technical and Economic Estimate of Efficiency of Using 3D printing in Housing Construction

AKULOVA, I.I.; Slavcheva, G.S.; Makarova, Tatiana V.

doi:10.31659/0044-4472-2019-12-52-56

Cited by 3 publications

(1 citation statement)

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“…It is desirable that the values of the point marks are not repeated. The methodology for calculating the weighting factors of the functional properties of building materials and products is presented in detail in the sources [16,17].…”

Section: Resultsmentioning

confidence: 99%

Methodological approaches to assessing the technical and economic efficiency of the building materials and structures’ use

2021

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The technical and economic efficiency actual problem of the use of building materials, products and structures is considered. Taking into account the purpose, a grouping of building materials was carried out according to eight nomenclature groups of structural, structural and heat-insulating, heat-insulating, acoustic, finishing, waterproofing and roofing materials, as well as the materials for special and general purposes. It is proposed to assess the technical and economic efficiency of building materials that form various nomenclature groups on the basis of two methodological approaches. The first approach should be applied to the building materials with one pronounced functional property, and the second - for the materials with several properties, the priority of which is not obvious. The calculations are carried out according to the criterion of the maximum units of useful effect due to the use of materials per unit of associated costs. In the second case, it is advisable to use the expert assessments to determine the significance of functional properties. Methodical recommendations for the technology of their implementation are provided.

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Section: Resultsmentioning

confidence: 99%

Methodological approaches to assessing the technical and economic efficiency of the building materials and structures’ use

2021

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Modified Gypsum-Cement-Pozzolan Concrete for 3DCP

Mukhametrakhimov,

Rakhimov,

Galautdinov

et al. 2024

Construction Materials

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3D concrete printing (3DCP) is an innovative and promising method for constructing buildings and structures. Compositions of fine-grained concrete based on Portland cement are widely used as raw material mixtures in this technology. An alternative to the use of cement binder is the use of gypsum-cement-pozzolan binder, which can significantly reduce the cost of the finished product and, accordingly, increase its competitiveness. The raw material mixtures based on gypsum-cement-pozzolan binder presented on the construction market do not fully meet the requirements of 3DCP. Achieving optimal performance of gypsum-cement-pozzolan mixtures in 3DCP is possible by regulating the content of fine aggregate in the composition of fine-grained concrete, as well as the use of multicomponent modifying additives. The purpose of this work is to develop modified gypsum-cement-pozzolan concretes for 3DCP based on optimization of aggregate content and multifunctional additive, providing optimal rheotechnological properties of raw mixtures and technological characteristics of finished products. The formation of samples during experimental studies was carried out using the layer-by-layer extrusion method on a workshop construction 3D printer “AMT S-6044”. Modified gypsum- cement-pozzolan concretes have been developed for 3DCP with increased ultimate shear stress of the mixture (87.6 Pa), dimensional stability (23 cm), average composite density (1920 g/m3), flexural strength (8.4 MPa) and compression (30.6 MPa) and water resistance (0.85). The possibility of targeted regulation of the structure and properties of gypsum-cement- pozzolan mixtures and concrete due to the synergistic effect of the components of the developed multifunctional complex additive, including an aqueous solution of a polycarboxylate ether, a copolymer based on carboxylic acid esters, and a homogeneous mixture of oligoethoxysiloxanes, has been proven. The results obtained are consistent with the results of the differential thermal analysis of modified gypsum-cement-pozzolanic stone.

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Comprehensive Assessment of 3d-Build Printer Competitiveness

Slavcheva

AKULOVA

2023

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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This article proposes a method for assessing the competitiveness of building 3D printers based on a comparison of their technical and technological characteristics and economic parameters. The methodology implements an integrated approach that takes into account a large number of comparison parameters of a different nature based on the use of relative indicators. The calculation takes into account the design characteristics of printers, the characteristics of the manufacturability of the printing process, the characteristics of printed building objects and the economic parameters of printers. So, for low-rise construction, the essential parameters are: printing speed, the ratio of the print area and the overall dimensions of the printer, the ability to work with low-flow mixtures and with various building mixtures without readjustment, reducing the defectiveness of the printed layer and energy consumption. The most competitive is the printer that provides more units of useful effect, determined by a set of technical and technological characteristics, per unit of costs associated with the purchase of a printer, its energy consumption, the laboriousness of maintenance and installation and dismantling at a construction site. As a result of assessing the competitiveness of various types of printers, it was revealed that the leader for low-rise construction is the portal printer BOD2 2-2-2 of the Danish company COBOD BOD2. For printing building products and structures in a production environment, the FIXED robotic arm from the Netherlands has a competitive advantage. CyBe Construction. The considered approach to assessing the competitiveness of building 3D printers is of practical interest to their manufacturers. The new knowledge about the significance of the design solutions of 3D printers, obtained as a result of the implementation of the proposed methodology, creates strategic guidelines for domestic manufacturers.

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Technical and Economic Estimate of Efficiency of Using 3D printing in Housing Construction

Cited by 3 publications

References 0 publications

Methodological approaches to assessing the technical and economic efficiency of the building materials and structures’ use

Methodological approaches to assessing the technical and economic efficiency of the building materials and structures’ use

Modified Gypsum-Cement-Pozzolan Concrete for 3DCP

Comprehensive Assessment of 3d-Build Printer Competitiveness

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