Concrete Technology Research Articles

Influence of gravity on the micromechanical properties of portland cement and lunar regolith simulant composites

Concrete materials utilizing in-situ planetary resources are a promising option for construction on the Moon and Mars but the influence of variables, such as reduced gravity, needs to be understood. In this paper, we investigate the influence of gravity on the micromechanical properties of portland cement pastes that contain the lunar regolith simulant JSC-1A. Samples were prepared by astronauts onboard the International Space Station (ISS) and hydrated in microgravity (μg), lunar gravity (0.17 g), Martian gravity (0.38 g), and a statistical point at 0.7 g. Results were compared to a control sample hydrated on Earth (1.0 g). Specimens were analyzed by statistical nanoindentation and results for the paste suggest that gravity does not influence the in-situ mechanical properties of the hydrated phases. Results for the simulant give insight into the potential performance of lunar regolith as a component in a composite material. These results are critical to the continued development of lunar concrete technology.

Effect of plant fiber type and content on the strength and durability performance of high-strength concrete

Besides obvious ductility benefits, low-energy, and sustainable development of FRC is still a major challenge. Plant-based fibers owing to their lower costs and minimal embodied carbon have attracted huge interest in concrete technology. This experimental study explored the effects of using different types of plant fibers in HSC. Three fibers namely JF, BF, and CF were used in HSC at varying volume fractions (0%, 0.1%, 0.2%, 0.3%, 0.4%, and 0.5%). The performance of plant fibers in HSC was compared with that of PF. According to the findings, the workability decreased with the rise in plant fiber content and JF addition was more deleterious to workability as compared to other plant fibers. JF yielded slightly better results than synthetic PF and other plant fibers in CS. In STS and FS, both BF and JF yielded a better performance as compared to synthetic PF and CF. The recommended dose of plant fibers for maximum STS and FS is 0.3% by volume. At a volume of 0.3%, ‘BF’, ‘JF’ and ‘CF’ resulted in net increases of 20%, 24% and 15% in STS of plain HSC, respectively. In the case of FS, 0.3% volume of BF, JF and CF yielded net increases of 25%, 23%, and 17.5%, respectively. Generally, a higher volume fraction (>0.5%) of plant fibers was harmful to the imperviousness and capillary resistance of HSC. This study encourages the application of silica fume and a superplasticizer to control the negative effects of plant fibers on HSC mixes.

Mode of innovative green production for concrete engineering: life cycle assessment of accelerators prepared from aluminum mud wastes.

In this study, two types of liquid alkali-free accelerators were prepared by aluminum sulfate (AF1) and aluminum mud wastes (AF2), and the life cycle assessment (LCA) in the preparation of AF1 and AF2 was compared. The LCA was considered from cradle to gate including raw materials used, transportation, and accelerator preparation based on the method ReCiPe2016. The results indicated that AF1 had a higher environmental impact in all midpoint impact categories and endpoint indicators than that of AF2, and AF2 reduced 43.59% emission of CO2, 59.09% emission of SO2, 71% consumption of mineral resources, and 46.67% consumption of fossil resources than that of AF1 respectively. As an environment-friendly accelerator, AF2 had a better application performance than traditional accelerator AF1. When the dosage of accelerators was 7%, the initial setting times of cement pastes containing AF1 and AF2 were 4 min 57 s and 4 min 04 s respectively, the final setting times of cement pastes containing AF1 and AF2 were 11 min 49 s and 9 min 53 s respectively, and the compressive strengths at 1 d of mortars containing AF1 and AF2 were 7.35 MPa and 8.33 MPa respectively. This study aims to provide technical feasibility and environmental impact assessment for exploring new avenues of preparing environment-friendly liquid alkali-free accelerators with aluminum mud solid wastes. It has great potential in reducing carbon and pollution emissions and has a greater competitive advantage due to great application performance.

Analysis of the development of autogenous shrinkage of CEM I 42.5R and CEM III/A 42.5N cement pastes with different water to cement ratios

In concrete technology, cements with a high content of Portland clinker are increasingly being replaced by blended binders with a lower carbon footprint. Such binders include blastfurnace cements, which are successfully used in concretes designed for large-scale elements, self-compacting concretes, as well as for the precast concrete industry. Blast furnace cements exhibit lower strength gain relative to Portland cements and a lower heat of hydration. Composites that incorporate them are significantly more resistant to the occurrence of thermal stresses at the early stages of curing of concrete. This paper provides a comparative study of the development of autogenous shrinkage of cement pastes made from CEM I 42.5R and CEM III/A 42.5N with a variable w/c ratio using the dilatometric method on a proprietary instrument covered by the patent PL241667. Furthermore, tests on consistency, setting times and compressive strength were performed after 2, 7 and 28 days of curing. From the analyses carried out, it was found that cement pastes containing blast furnace cement show greater autogenous shrinkage over a period of 28 days compared to pastes containing Portland cement. The pozzolanic reaction of granulated blast furnace slag contributes to the increase in recorded autogenous shrinkage. An increase in the water-cement ratio has an impact on the decreased strength gain, and the value of autogenous shrinkage. The research results indicate the need to take autogenous shrinkage into account when designing high-performance concretes containing blast furnace cement due to the increased susceptibility to shrinkage microcracks and for the durability of the material.

Eco-Concrete in High Temperatures.

Concrete technology is becoming more and more sustainable and ecological following more extensive and focused research. The usage of industrial waste and by-products, such as steel ground granulated blast-furnace slag (GGBFS), mine tailing, fly ash, and recycled fibers, is a very important step toward a good transition of concrete into a "green" future and significant improvement in waste management in the world. However, there are also several known durability-related problems with some types of eco-concretes, including exposure to fire. The general mechanism occurring in fire and high-temperature scenarios is broadly known. There are many variables that weightily influence the performance of this material. This literature review has gathered information and results regarding more sustainable and fire-resistant binders, fire-resistant aggregates, and testing methods. Mixes that utilize industrial waste as a total or partial cement replacement have been consistently achieving favorable and frequently superior outcomes when compared to conventional ordinary Portland cement (OPC)-based mixes, especially at a temperature exposure up to 400 °C. However, the primary emphasis is placed on examining the impact of the matrix components, with less attention given to other factors such as sample treatment during and following exposure to high temperatures. Furthermore, there is a shortage of established standards that could be utilized in small-scale testing.

To Study the Properties of Concrete Mix on Partial Replacement of Coarse Aggregate with Burnt Bricks

These days, materials such as over-burned bricks blast are employed as an alternative to coarse aggregates. This paper investigates the physical features of concrete formed with burned bricks blast. Natural rock is by far the most common coarse aggregate used in concrete, however not all types of rock appropriate for concrete production are available everywhere. Due to a paucity of aggregate from natural sources in India's north-eastern states, brick aggregate concrete is commonly utilised for ordinary concrete. Due to advancements in concrete technology and to meet the requirements for durability, As a result of the need to utilise standard concrete, which only uses stone aggregate, construction costs have increased as materials are carried from other states. Making good quality concrete with the finest sand (grading zone – IV as per Indian code IS:383-1970) is difficult enough, but the natural coarse aggregate is scarce locally. Burnt brick aggregate has a high-water absorption rate (12 to 20% by mass), which makes it difficult to utilise in practical work. As a result, an attempt has been made to provide a viable solution for real-world use. To test various strength characteristics, an experimental investigation was done. In our project, waste material was employed as a coarse aggregate while simultaneously keeping the strength of the concrete. The effects of a percentage replacement of stone aggregates with burn brick aggregates on the compressive strength of concrete are presented in this study. Concrete cubes of M25 grade samples containing various percentages of brick aggregate, such as 0%, 10%, 20%, and 30%, are made 7-, 14-, and 28-days tests were performed.

Tensile properties of slag-based engineered cementitious composites with ground granulated blast-furnace slag

During the last decade, concrete technology has been undergoing rapid development, resulting in a new concept of engineered cementitious composite (ECC) to overcome the brittle behaviour of cement-based materials. ECC is one movement to fully incorporate waste material as an innovation in green material due to excellent toughness and energy absorption capacity, self-healing ability, fire performance, and remain durable under erosion environment. ECC exhibits a strain-hardening behaviour through the formation of micro cracking. This study is focusing on the tensile behaviour of the slag-based ECC. A total of five ECC mixes were designed with different cement to ground granulated blast-furnace slag (GGBS) ratio. Five samples of dog bone and three cylindrical for each mixture were prepared for direct tensile and compression tests. Compared to control samples, there are increments in compressive strength for samples contained 50-60% of GGBS and reductions in compressive strength for samples contained 70-80% of GGBS. The tensile strengths of ECC increase in the rate proportionally to the content of GGBS in ECC mixtures. The failure modes of the ECC cylinder samples including crushing under compressive load and few micro cracks are observed in ECC dog bones.

Sustainable construction material: Ultra-high performance fibre reinforced concrete (UHPFRC) for railway bridges in Malaysia

UHPFRC is a new concrete technology being used in many countries including Malaysia. UHPFRC favourable material properties open up new potential for precast options in bridge construction and have been widely used as beams for highway bridges in Malaysia. Nevertheless, PRC beams were preferred despite heavy in weight and large sections although these properties affect the design of the bridge substructure as well the cost of construction. This research is to review the applicability of Grade 140/155 UHPFRC beam for railway bridges in Malaysia. Laboratory tests for mechanical properties of UHPFRC were conducted and results were verified and complied with the French Standard, NF P18-470: 2016. The characteristic cylinder and cube compressive strengths were 151 and 155 MPa while the tensile limit of elasticity, post-cracking tensile strengths and modulus of rupture were 7.8, 8.4 and 24.3 MPa respectively. Structural analysis and design as per NF P18-710: 2016 requirement was then performed for a 15 meter UHPFRC IB650 beam to justify its applicability against a Grade 40/50 PRC U-beam of an existing railway bridge in which the ultimate shear and moment capacities of both beams were compared. The ultimate shear and moment capacities of the 4 numbers of U-beams/deck were 4,092 kN and 13,324 kNm respectively and when compared to UHPFRC IB650 beam, six numbers/deck were required with ultimate shear and moment capacities of 4,836 kN and 14,574 kNm respectively. For durability, the modulus of elasticity and depth of water penetration for UHPFRC were 50.8 GPa and 2mm respectively compared to 34 GPa and 11mm for Grade 40/50 concrete.

Preface

The 15th International Conference on Concrete Engineering and Technology (CONCET 2022) was organized by The Institution of Engineers, Malaysia (IEM) on 6-7 December 2022. The online conference was co-organized with Universiti Malaya (UM) and Universiti Teknologi MARA (UiTM).The theme for CONCET 2022 is ‘Innovation and Resilience in Concrete Construction’. The conference was aimed to cover fresh perspectives and the latest in the wider topic of innovation and a more specific topic of resilience, in concrete construction.The main topics in the conference include:• New-generation concrete materials• Recycled materials and by-products in concrete• Modular and prefabricated construction• Advanced structures and infrastructure• Testing, inspection and health monitoring• Life-cycle assessment of concrete structuresWe would like to sincerely thank and acknowledge all the authors, presenters and participants whose support made CONCET 2022 a success. Ir. Low Kai Wah Conference ChairCONCET 2022List of Guest Editors, Organizing Committee, Scientific Advisory Committee Members are available in the pdf.

Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures

South Korean concrete crack management standards deem cracks larger than 0.3 mm to be defects. However, concrete crack reduction technology is lacking and urgently needed to meet these standards. In this study, the durability characteristics of blast-furnace slag concrete with an expansion material and swelling admixtures were examined. We observed that expansion using the expansive material not only contributed to the initial expansion but also continued to act during drying shrinkage, maintaining a drying-shrinkage reduction rate of over 40 %. This expansion effect is shown in the initial stage and contributes to compensating for contraction by continuous expansion activity in the long term. In addition, the freeze-thaw resistance was observed to be higher in the case of a mixture substituted with 30 % fine blast-furnace slag powder than in the standard mixture using normal Portland cement, and the carbonation resistance showed that the carbonation penetration depth decreased as the curing time increased. Thus, to achieve crack control by initial drying shrinkage of the blast-furnace slag concrete, it is expected that the expansion material would effectively control cracking, and the use of this expansion material will be advantageous in securing better quality bentonite than hydroxy propyl methyl cellulose.

Modelling the compressive strength of high-performance concrete containing metakaolin using distinctive statistical techniques

Cement consumption is rapidly increasing around the world causing environmental concerns over higher CO2 emissions. Metakaolin obtained through the calcination of kaolinite clay is an eco-friendly substitution for clinker in portland cement production. The raw materials required to produce metakaolin are easily accessible and cheap. Addition of metakaolin in concrete alters mechanical properties, notably compressive strength. Prior knowledge of the strength characteristics of concrete play a vital role in determining the design aspects of the buildings. Robust prediction models that can effectively predict the compressive strength of pozzolan-based concrete are highly essential in the field of concrete technology in order to save time and reduce laboratory testing samples. In this regard, A total of 152 experimental datasets from the literature were collected and evaluated. Influencing parameters such as binder content (385–600 kg/m3), water to cementitious material ratio (0.25–0.45), metakaolin replacement levels (0%–50%) and SiO 2/Al2O3 ratio in the cement paste (1.05–12) were chosen as independent variables. The present study was aimed at developing prediction models using different statistical techniques such as Linear regression (LR), Multi-logistic regression (MLR), Nonlinear regression (NLR) and Response surface methodology (RSM) to predict the 28-day compressive strength of High-performance concrete containing metakaolin. Also, the performance of the proposed models was examined using different statistical metrics such as coefficient of correlation (R), root mean squared error (RMSE), mean absolute error (MAE) and scatter index (SI). The quadratic RSM model outperforms all the proposed models in the present study with R, RMSE, MAE and SI of 0.92, 6.5 MPa, 5.2 MPa and 0.08. The models were evaluated in strength ranges other than HPC, and the QRSM model showed a maximum residual error of ±20%. Furthermore, the results of sensitivity analysis indicate that binder content, w/b ratio and SiO2/Al2O3 are the most influential parameters controlling the compressive strength of concrete.

The comparison of the experimental investigations of strength characteristics of conventional and bacterial concrete

Conventional concrete (CC) is the greatest used construction material in the world, especially in aggressive environments. This is due to the element's size and shape. The world's consumption of concrete is on the order of 5.5 billion metric tons a year. The advancement of concrete technology, as well as the development of materials and mechanisms, has resulted in increased strength needs. Maintenance, repair, and rehabilitation of present concrete structures challenge a lot of difficulties, resulting in significant expenditure. Concrete is vulnerable to microcracks creation and has extremely undesirable pores. Hence, there is an urgent need to pay more attention to improving the properties of concrete in terms of strength. The effective remedy for the closure of cracks is Bacterial concrete (BC) which will constantly be in concrete and this phenomenon is called Microbiologically Induced Calcite Precipitation (MICP). The urease enzyme enables the deposition of calcium carbonate (CaCO3) with the advantage of bacteria. The bacterial remediation technique exceeds added techniques. The examinations were carried out with variety an of quantitative evaluations of the optimal concentration of bacterial cells to be collected in concrete. Based on the state-of-the-art evidence obtainable in the literature, in these existing soundings two different bacterial illustrations specifically Bacillus Megaterium (BM) and Bacillus Subtilis (BS) are measured in concentrations of 104, 105, and 106 cells/ml of mixing of water. The optimum amount of cell concentration of bacteria is created to be 104 cells/ml for BM and 105 cells/ml for BS based on the results of compressive strength. This investigation is carried out on strength-related properties such as compressive strength, splitting tensile strength, and flexural strength. It is determined that BM and BS bacteria can be firmly used for refining the performance and strength characteristics of concrete.

Analysis of New Materials Application in Municipal Road Construction

In order to promote the development of road traffic in our country, it is necessary to strengthen the research on municipal road construction technology, constantly innovate construction technology and construction technique, and then effectively ensure the rapid development of urban traffic. This paper mainly elaborates on asphalt road surface regeneration technology, modified asphalt concrete, concrete road surface anti-cracking technology, three-dimensional printing technology, composite material road surface, polymer composite materials, etc., to ensure the development of urban transportation and the quality of municipal road projects.

Self-Compacting Concrete with Low Binder Content and Recycled Aggregates - Economical or Ecological Solution?

Despite the fact that the self-consolidating concrete is present on the market since the 1990s, it still faces a number of problems that limit its use in many countries. In Poland, in addition to economic barriers (the standard self-compacting concrete is much more expensive than standard concrete, which is most obtainable at low classes such as C16/20 and C20/25), there are also problems with a higher shrinkage resulting from the large amounts of grout There are also frequent problems with a high viscosity of the standard self-consolidating concrete, limiting the areas of its use. Development of a concrete technology and, in particular, the new generation of stabilizers (VMA) produced an alternative to the traditional self-consolidating concretes, i.e. the self-consolidating concretes with a low binder content - less than 380 kg/m3 , or even down to 315 kg/m3 . The low binder content in the new generation of the self-consolidating concretes, comparable to the binder content of standard products, makes them more economically competitive. The low viscosity of these mixtures result in much easier application, and the contraction rate lower in comparison to the standard self-consolidating concrete, which make them ideal substitutes of standard concretes. In the age of sustainable development, the requirements of the certification related to multi-criteria evaluation system such as LEED, BREEAM and DGNB, considerable importance to the issue of CO2 emission reduction. The production of self-compacting concrete with low binder content and recycled aggregates result in lower CO2 emissions than production of other self-consolidating concretes with high binder content. The use of recycled aggregates coupled with reducing the binder content make the self-compacting concrete more attractive in terms of their environmental impact. This solution allows for reduction in both the heat of hydration due to low cement content, and also for higher scores in multi-criteria evaluation building systems, due to the use of waste materials. This paper attempts to present the advantages and disadvantages of economical and ecological analyze of waste material usage such as recycled aggregates in SCC solutions.

Failure modes and dynamic responses of roller compacted concrete gravity dams subjected to underwater contact explosion based on the cohesive model

Considering the construction technology of roller compacted concrete (RCC) gravity dams, there are layers in dams inevitably, which may affect the blast responses of dams. This paper is aimed to investigate the effects of RCC layers on the failure modes and dynamic responses of RCC gravity dams bearing underwater contact explosion loading. Initially, the zero-thickness cohesive element model is presented to simulate the crack behavior of the RCC layers. An impact test of a concrete beam is selected to verify its reliability. The concrete damage plasticity model considering strain rate effects is utilized to simulate the various responses of concrete under blast load. The dam–reservoir–foundation interactions are described using the coupled Eulerian-Lagrangian method. The numerical methods are validated by a field blast test of a concrete structure. Subsequently, numerical models were established for gravity dam-reservoir-foundation systems, with and without considering RCC layers respectively. Based on validated algorithms, these models were utilized to explore the effects of RCC layers on the blast performance of the dam. Finally, the influence of the parameters of RCC layers on the nonlinear responses and failure modes of the dam is further investigated, including the maximum traction, the fracture energy, and the layer thickness. The results reveal that the layers significantly change the failure modes. The RCC layers are the weak link of the dam and they will lower the anti-explosion performance of the dam. Therefore, it is crucial to take the layers into account when conducting anti-explosion research, and RCC dams cannot be simply simplified as normal concrete dams. To guarantee the safety of the dam, it is important to ensure the layers with sufficient strength and fracture energy, as well as an appropriate thickness.

Analysis of the Dominance of Steel and Concrete in Architecture

The issue of carbon emissions from building materials is an important issue in today's society and concrete buildings are one of the main contributors to carbon emissions. As a result, steel construction is very popular in modern society. However, with improvements in concrete technology, it is gradually starting to gain acceptance again. The focus of this review article is to discuss the dominant role of steel and concrete in construction. This paper adopts the method of literature analysis and reading. At the same time, the data of this study come from SteelConstruction.info (The free encyclopedia for UK steel construction information), British Constructional Steelwork Association (BCSA) and Steel Construction Institute (SCI) and The British Standard Institute. The following conclusions can be drawn: Steel structures are getting more and more attention. Steel structure and cement play an important role in construction.

Artificial intelligence techniques in advanced concrete technology: A comprehensive survey on 10 years research trend

AbstractAdvanced concrete technology is the science of efficient, cost‐effective, and safe design in civil engineering projects. Engineers and concrete designers are generally faced with the slightest change in the conditions or objectives of the project, which makes it challenging to choose the optimal design among several ones. Besides, the experimental examination of all of them requires time and high costs. Hence, an efficient approach is to utilize artificial intelligence (AI) techniques to predict and optimize real‐world problems in concrete technology. Despite the large body of publications in this field, there are few comprehensive surveys that conduct scientometric analysis. This paper provides a state‐of‐the‐art review that lists, summarizes, and categorizes the most widely used machine learning methods, meta‐heuristic algorithms, and hybrid approaches to concrete issues. To this end, 457 publications are considered during the recent decade with a scientometric approach to highlight the annual trend/active journals/top researchers/co‐occurrence of key title words/countries' participation/research hotspots. In addition, AI techniques are classified into distinct clusters using VOSviewer clustering visualization to identify the application scope and their relationship through the link strength. The findings can be a beacon to help researchers utilize AI techniques in future research on advanced concrete technology.

Multi-criteria comparison tools to evaluate cost- and eco-efficiency of ultra-high-performance concrete

This work was motivated by the increasing need for proper metrics and tools to demonstrate the effect of mechanical performance, as a function of concrete mix composition, in dictating the dimensions of structural elements and associated costs and embodied carbon dioxide (CO2) emissions. Mixture compositions associated with different concrete technologies were compared using multi-criteria comparison indices derived using structural design considerations and calculated using information on compressive strength, volumetric embodied CO2 and unit costs. In addition, predicted compressive strengths obtained with machine learning (ML) models are used to calculate these indices for a domain of mix proportions associated with ultra-high-performance concrete materials to generate multi-objective density diagrams (MODDs). The makeup of this tool facilitates the evaluation of rather complicated trends associated with mix proportions and multi-objective outcomes, allowing ML-based tools to be of easy interpretation by industry personnel with no expertise in artificial intelligence. MODDs could be used as aids in the decision-making process during mix design stages and serve as proof of mixture optimization that could be introduced in environmental product declarations. Results show that, in contrast to conventional wisdom, high-binder content and ultra-high strength concrete technologies are not necessarily detrimental to cost and/or eco efficiencies. For the applications evaluated herein, optimum solutions were mostly obtained with these types of concrete, suggesting that industry trends toward requiring minimization of embodied carbon footprint on a per volume of concrete basis are misguided and should not be used as a standalone metric to minimize the total carbon footprint of concrete structures.

Combined effect of fineness modulus and grading zones of fine aggregate on fresh properties and compressive strength of self compacted concrete

Self-compacted concrete (SCC) considered as a revolution progress in concrete technology due to its ability for flowing through forms, fusion with reinforcement, compact itself by its weight without using vibrators and economic advantages. This research aims to assess the fresh properties of SCC and study their effect on its compressive strength using different grading zones and different fineness modulus (F.M) of fine aggregate. The fineness modulus used in this study was (2.73, 2.82,2.9& 3.12) for different zones of grading (zone I, zone II& marginal zone(between zone I&II)) according to Iraqi standards (I.Q.S No.45/1984).Twelve mixes were prepared, each mix were tested in fresh state with slump, V-Funnel and L-Box tests, then 72 concrete cubes of (100*100*100) mm for different mixes were tested for compressive strength after 7 and 28 days of water curing. Results indicated that the combined effect of finenessmodulus and grading zone were clear on the passing ability and little effect of grading zone on flow ability and viscosity of fresh SCC properties. Compressive strength decreases with increasing F.M and no effect of grading zone for F.M higher than 2.90

THE INFLUENCE OF THE TECHNOLOGICAL MODE OF COMPACTION OF CONCRETE MIXTURE WITH FLY ASH AND MICROSILICA ADDITIVES ON THE STRENGTH OF CONCRETE

The aspects of expanding the scope of application of non-reinforced products, in particular, pipes with sufficient strength indicators, were considered, and the objective necessity of developing appropriate concrete compositions and compaction technology, as well as the nomenclature and parameters of additives, was confirmed. The article outlines the trends of increasing concrete strength characteristics due to the rationalization of methods of concrete compaction with the use of waste. It has been confirmed that for the material of the pipes it is necessary to ensure the increased tensile strength of the product. After compaction, it is necessary to remove the liquid from the concrete, which ensures maximum convergence and unification of the particles of the solid phase. The method of iterations was used to determine the influence of each of the factors of concrete strength research on tension. Considered methods of concrete mixture compaction, according to the features and rheological properties of which two principles are implemented during compaction: removal of excess entrapped air and excess water from low-mobility and rigid mixtures by external influence and removal of air from high-mobility mixtures. Special attention was paid to the technologies of compaction by pressing, vacuuming and vibrovacuuming. Samples of concrete compacted by pressing and vibrovacuum ensured the production of concrete of almost the same structure with compaction of all components. Test results, electron microscopy of cement stone, radiographs obtained with different methods of compaction are presented. An increase in the degree of crystallinity was recorded due to the higher speed of reaching the supersaturation of the liquid phase of the cement test during hydration. When processing the research results, a regression analysis was performed, and analytical models for predicting parameters were obtained. The results were obtained that the fine-grained concrete mixture when compacted by pressing provides an increase in strength under the condition of pressing in layers.