Application of statistical methods for solving problems of construction materials science

Zhukov, Aleksej; Bobrova, E.U.; Bessonov, Igor; Medvedev, Andrey; Demissie, Bruno

doi:10.15828/2075-8545-2020-12-6-313-319

Cited by 9 publications

(6 citation statements)

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“…Experiments to select the composition of ceramic mixtures using rice straw as a burnout additive and rice straw as the active mineral component were carried out on the basis of the mathematical planning and processing of the experimental results [14,15] and the analysis of equations and the determination of the optimal cost were based on Carried out based on the analytical optimization method [16,17].…”

Section: Methodsmentioning

confidence: 99%

Ceramic products based on modified agricultural waste

et al. 2023

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The current production status of building ceramics is based on the following realities. First, due to market conditions, the number of ceramics factories in operation has decreased significantly. Second, from 2019, taking into account the pace of housing construction related to the transition to new financing mechanisms, the production of ceramic bricks increased by 2-3% from 2019. Growth opportunities are associated with an increase in the thermal efficiency of ceramic products and masonry based on them. The aim of the research described in the article was the development of compositions for wall heat-efficient ceramics on the basis of loess-like low-quality clay using rice straw as a burnout additive and in particular to determine the optimal consumption of processed rice straw. The scientific novelty of the research consisted in the development of methods for selecting the composition of ceramic mixtures, optimizing their composition and demonstrating the influence of rice straw and rice straw ash on the properties of ceramic mixtures and the properties of products. Rice straw. 5–15% by weight of lint rice straw, which is incorporated into clay masses at the stage of their production and burns at a temperature of 200–300 ° C, burns out the mass and makes it porous, prevents shrinkage phenomena and ash contains up to 20% amorphous silica. Carbonates contained in clay dissociate during firing, interacting with amorphous silicon dioxide and forming various calcium silicates that strengthen the structure of the chip industry.

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Section: Methodsmentioning

confidence: 99%

Ceramic products based on modified agricultural waste

et al. 2023

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“…The experimental study of cellulose modification was conducted on the basis of analytical optimization [40,41]. The results of the experiment were processed using the program "Statistics".…”

Section: Methodsmentioning

confidence: 99%

Modification of Cellulosic Materials with Boron-Nitrogen Compounds

2023

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Wood fiber and its products are modified to increase fire and bio-resistance. The best results are achieved by using modifiers that enter into chemical interaction with the hydroxylated substrate, forming the organic matrix of the materials. The purpose of the research described in the article was to study the possibility of using boron-nitrogen compounds to modify cellulose and cellulose-containing materials to improve the performance, bio- and fire-protective properties of construction materials, as well as to optimize the consumption of boron-nitrogen compounds. As a result of the research, it was found that the boron-nitrogen compounds used in the compositions developed here chemically interact with hydroxyl groups at the C6-atom of cellulose. The chemical interaction of boron-nitrogen compounds with cellulose is an inter-crystalline process occurring without destruction of the crystal structure of the substrate since the modifier molecules bind with the more accessible hydroxyl groups of the amorphous regions of cellulose. Thus, surface modification with boron-nitrogen compounds does not result in accelerated aging of cellulose-containing materials and loss of strength but, on the contrary, increases the durability of wooden structures.

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“…At the same time, all processes inside the "black box" are not considered. This method is widely used in engineering, including construction materials science [11,12].…”

Section: Methodsmentioning

confidence: 99%

Modified high-strength concrete with the addition of CONPLAST SP430

et al. 2021

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In most high-strength concrete technologies, high-quality Portland cements are used, which is not always achievable in conditions of a shortage of such binders. The research’s purpose is to obtain high-strength concrete based on ordinary Portland cement of the M400 brand. To achieve this goal, the possibility of using the superplasticizer Conplast SP430 was studied. The research was carried out using standard methods, like using mathematical planning and result’s analytical processing. The implementation of the experiment allowed us to determine the optimal values of the basic composition of concrete: the consumption of superplasticizer-1.0 % of the mass of cement; the consumption of cement-485 kg/m3, the ratio of sand/crushed stone-0.36. At the optimal value of the parameters, the achieved maximum compressive strength was 58.8 MPa. The novelty is the justification of the possibility of obtaining high-strength concretes using Portland cement with an activity not exceeding 40 MPa based on the use of a new generation superplasticizer and the development of the basics of the method for selecting the composition of concrete. The significance of the result is due to the expansion of the possibility of using ordinary Portland cement for the production of products and structures with the use of high-strength concrete.

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Application of statistical methods for solving problems of construction materials science

Cited by 9 publications

References 0 publications

Ceramic products based on modified agricultural waste

Ceramic products based on modified agricultural waste

Modification of Cellulosic Materials with Boron-Nitrogen Compounds

Modified high-strength concrete with the addition of CONPLAST SP430

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