Complex Laboratory Studies of Modified Additive Influence on Concrete Physical and Mechanical Properties

Altynbekova, Aliya

doi:10.21660/2022.100.3641

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…The results obtained correlate well with similar studies of foam concrete [5,6,9,[24][25][26][27], where investigations into the physical and mechanical properties of foam concrete were conducted, often comparing variant compositions. The test results from these studies fall within acceptable limits in comparison with the results obtained in the present study.…”

Section: Discussionsupporting

confidence: 83%

Investigation of Effect of Proposed Two-Stage Foam Injection Method and Modified Additive on Workability of Foam Concrete

Lukpanov,

Dyussembinov,

Altynbekova

et al. 2024

Materials

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This article presents the results of an investigation of the proposed method and the influence of a modified additive on foam concrete properties. X-ray diffraction analysis showed that the modified additive has a variable mineralogical composition, and the joint use of the components contributes to the synergistic effect, improving the processes of cement hydration. Microscopy of the foam concrete samples showed the presence of microcracks and micropores in samples both with and without the additive. However, the use of the additive significantly reduced their number and size, which indicates an improvement in the structure of the material. The strength values showed that the samples with the additive have high strength. In particular, the strength values of samples of type 3 at different stages of curing exceed those of samples of type 1 by 1.32–1.51 times and samples of type 2 by 1.07–1.10 times. The obtained strength values are 2.82–3.21 MPa for type 1, 3.64–4.04 MPa for type 2, and 4.39–4.84 MPa for type 3, which corresponds to grade D600. The evaluation of water absorption also confirmed the advantages of the proposed method and the additive, significantly reducing the water absorption of the samples and increasing their hydrophobicity. The obtained values of water absorption are 13.8–16.6% for type 1, 13.7–16.1% for type 2, and 9.5–11.2% for type 3.

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Section: Discussionsupporting

confidence: 83%

Investigation of Effect of Proposed Two-Stage Foam Injection Method and Modified Additive on Workability of Foam Concrete

Lukpanov,

Dyussembinov,

Altynbekova

et al. 2024

Materials

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“…Experimental data from a complex laboratory study on the effect of complex modified additives (CMA) show that the studied additives form an optimal structure reducing water saturation and increasing the strength properties of concrete. This experiment makes it possible to expect a higher operational property of heavy concrete -frost resistance, increasing its durability (Altynbekova, 2022).…”

Section: Introductionmentioning

confidence: 95%

Concrete mixture using natural coarse aggregate (A case study: Ongkak River– Dumoga)

Sudarno¹,

Palar²,

Oleysorot³

et al. 2023

World J. Adv. Eng. Technol. Sci.

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In current construction, there are still areas that utilize natural materials such as aggregates from rivers as construction materials, one of which is in the Dumoga, Bolaang Mongondow, North Sulawesi. The communities in this area still use natural aggregates from the river in the concrete mixture in the development process. The purpose of this study was to provide information to the public about the material characteristics and quality of concrete using coarse and fine aggregates from the Ongkak River, Dumoga. Therefore, this research aims to compare the results of concrete compressive strength of several mixtures in the field (1: 1.5: 2.5) (1: 2 : 3) (1 : 2.5: 3.5) (1 : 3 : 3) and (1 : 3: 4). Based on the results of the compressive strength, the optimal compressive strength value on average at 28 days is in the specimens with mixed variations (1: 1.5: 2.5) is 24.178 MPa, followed by mix (1: 2.5: 3,5) of 17.094 MPa, mixture (1: 2 : 3) of 15.459 MPa, mix (1 : 3: 4) of 13.737 MPa, and mix (1 : 3 : 3) of 12.250 MPa respectively.

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“…Modern construction imposes specific demands on engineers and designers, leading to the adoption of new, economically and ecologically efficient energy-saving technologies in place of established traditional solutions [1]. In this context, the issue of updating technological and technical solutions has extended to the field of foundation construction, particularly in the realm of deep foundation technology, commonly known as pile foundations [2,3].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the bearing capacity of variable profile piles in soil using static load model tests on a testing apparatus

Lukpanov,

Yenkebaev,

Zhantlessova

et al. 2024

EEJET

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The paper presents the results of the study of the proposed type of variable profile piles. The proposed type of piles is reinforced concrete driven piles segmented in length. Each subsequent section has a radial displacement along the axis of symmetry relative to the previous section. The positive effect of the performance of the proposed pile is to change the nature of the lateral contact of the pile with the soil, and to increase the drag of the soil. The conducted research is aimed at solving the problem related to the relatively low bearing capacity of traditional square section piles. The research was carried out by the method of model tests of piles on a test bench (tray) at a scale of 1:10. The tests were performed for variant pile types in comparison with a standard square section prismatic pile. The adopted dimensions of the pile model allow the use of this tray without the influence of its boundary conditions on the stress-strain state of the soil. A total of 42 tests were performed, 3 tests for each type of piles compared. Evaluation of pile bearing capacity was performed by static loading of pile models with vertical indentation load until failure. According to the results of the investigations, the resistance values of the compared pile types in the soil were obtained, as well as the dependence of bearing capacity changes on the section dimensions and on the rotation angle. According to the results, the optimal pile solution was selected. The bearing capacity of the proposed optimal pile solution exceeds the bearing capacity of the standard driven pile by 22 %. The results obtained allow us to conclude about the influence of the technological solution of the proposed pile type on its serviceability in soil conditions

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Complex Laboratory Studies of Modified Additive Influence on Concrete Physical and Mechanical Properties

Cited by 7 publications

References 10 publications

Investigation of Effect of Proposed Two-Stage Foam Injection Method and Modified Additive on Workability of Foam Concrete

Investigation of Effect of Proposed Two-Stage Foam Injection Method and Modified Additive on Workability of Foam Concrete

Concrete mixture using natural coarse aggregate (A case study: Ongkak River– Dumoga)

Assessment of the bearing capacity of variable profile piles in soil using static load model tests on a testing apparatus

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