Fine-Grainedcellular Concrete Creep Analysis Technique with Consideration Forcarbonation

Murtazaev, Said-Alvi Yusupovich; Lesovik, Valery; Bataiev, Deni Karim-Sultanovich; Chernysheva, Natalia Vasilievna; Saidumov, M.S.

doi:10.5539/mas.v9n4p233

Cited by 14 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of MTF in conjunction with plasticizing additives, which several times reduce W/C, will have an even greater effect on preventing the sedimentation of concrete mixtures. Thus, we estimated the stabilizing function of MTF on concrete mixtures using heavy dense natural granite-diabase aggregates with a density of more than 2.6 g/cm 3 . The consumption of the constituent components of the concrete mix for the control composition was adopted as follows: local cement -520 kg, Chervlensky sand -600 kg, crushed stone -1200 kg, at W/C ratio = 0.39.…”

Section: Resultsmentioning

confidence: 99%

“…It is important to find their water holding capacity, hydraulic activity, influence on basic properties of concrete and concrete mixes, since hundreds of thousands tons of waste in the form of concrete scrap and crushed brick were accumulated in the Chechen Republic in recent years due to dismantling of buildings. Rational utilization of such technogenic materials would have a considerable socio-technical, economic and ecological impact [3,4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Recycled Technogenic Raw Materials as an Effective Filler for Modern Construction Composites

Murtazayev¹,

Mintsaev²,

Аласханов³

et al. 2018

Proceedings of the International Symposium “Engineering and Earth Sciences: Applied and Fundamental Research” (ISEES 2018)

View full text Add to dashboard Cite

Technogenic wastes, which utilization is an urgent issue in developed countries, is quite interesting for the production of fine-ground filler used to produce modern high quality concrete. The amount of technogenic waste (or technogenic raw materials, secondary raw materials) is so big that some sources refer to it as to the technogenic raw materials base for the production of composite concrete. Keywords-concrete mix, superplasticizer, technogenic raw materials, concrete scrap, crushed brick, ash and slag waste, quartz sand, filler, efficiency, water gain of concrete mixI.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recycled Technogenic Raw Materials as an Effective Filler for Modern Construction Composites

Murtazayev¹,

Mintsaev²,

Аласханов³

et al. 2018

Proceedings of the International Symposium “Engineering and Earth Sciences: Applied and Fundamental Research” (ISEES 2018)

View full text Add to dashboard Cite

show abstract

“…At the same time, there is a need for the formation of concepts to supplement the fundamental foundations using models of hydration structure formation of cement composites for various functional purposes [30,31]. Considering that the science intensity of industries is determined, among other things, by the rate of change of raw materials, it is important to expand the raw material base for the creation of new structural materials with various improved target characteristics [32][33][34][35]. At the same time, to date, the rate of change of raw materials in the construction industry remains quite low [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities

Fediuk

Amran

Klyuev

et al. 2021

Fibers

View full text Add to dashboard Cite

The use of fiber in cement materials is a promising and effective replacement for bar reinforcement. A wide range of fiber-reinforced concretes based on composite binders with increased impact strength characteristics have been developed. The synthesized composites included the composite binder made of Portland cement, silica, and carbonate additives. Basalt and steel were used as fibers. The nature of the influence of the composition and manufacturing technology of cement composites on the dynamic hardening coefficient has been established, while the growth of these indicators is achieved by creating a denser interfacial transition zone between the cement paste, aggregate, and fiber as a result of improving the homogeneity of the concrete mixture and controlling the consistency. Workability indicators (slump flow up to 730 mm; spreading time up to a diameter of 50 cm is up to 3 s) allow them to be classified as self-compacting concrete mixtures. An increase in the values of the impact strength coefficient by a factor of 5.5, the dynamic hardening coefficient by almost 70% as a result of interfacial interaction between fibers and binder matrix in the concrete composite, as well as absorption of impact energy by fiber, was revealed. The formula describing the effect of the loading rate on the coefficient of dynamic hardening of fiber-reinforced concrete has been refined. The fracture processes of the obtained materials have been established: after the initiation of primary cracks, the structure of the composite absorbs impact energy for a long time, while in the inelastic range (the onset of cracking and peak loads), a large number of secondary cracks appear.

show abstract

“…When microcracks appear, the cement stone continuity is disrupted. Consequently, the redistribution of internal stresses occurs, the shrinkage strain and crack development processes slow down, and their direction changes [11].…”

mentioning

confidence: 99%

Studying the Relationship between the Strength and Stress-Related Characteristics of Concrete as a Conglomerate and the Properties of its Components

Shcherban’

Стельмах

Sysoev

et al. 2021

MSF

View full text Add to dashboard Cite

The concrete conglomerate properties change over time and depend on a number of factors. When considering deformation under the effect of mechanical loads or changes in temperature and humidity, the mechanism of this process is based on three main provisions. Firstly, concrete is a composite material, the matrix of which is cement stone. Secondly, the elastic modulus and strength of the cement stone may be less or more than that of aggregate. Thirdly, the concrete destruction under axial compression occurs at the cement stone stresses exceeding its ultimate extensibility in the direction normal to the external load action. Considering the specifics of deformation under load in different periods and the role of stress-related characteristics in this process, it is advisable to outline ways to regulate them and thereby the main concrete properties in the desired direction. The importance and feasibility of this approach are determined by the need to develop techniques allowing control of properties such as elasticity, shrinkage, and creep. A series of experimental tests and a comparative analysis of the results have been performed. The effect of some aggregate rocks on certain strength and stress-related properties of the concrete conglomerate has been investigated. Limestone and sandstone have been taken as the rocks studied. The properties studied include impact, axial compression, and axial tensile strengths. According to the analysis, concrete prepared on crushed limestone has shown the best results concerning all the properties studied.

show abstract

Fine-Grainedcellular Concrete Creep Analysis Technique with Consideration Forcarbonation

Cited by 14 publications

References 5 publications

Recycled Technogenic Raw Materials as an Effective Filler for Modern Construction Composites

Recycled Technogenic Raw Materials as an Effective Filler for Modern Construction Composites

Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities

Studying the Relationship between the Strength and Stress-Related Characteristics of Concrete as a Conglomerate and the Properties of its Components

Contact Info

Product

Resources

About