Modification of Road Soil Cement with Activated Fillers

Вдовин, Е А; Stroganov, V. F.; Konovalov, N. N.

doi:10.1007/978-3-030-72404-7_33

Cited by 11 publications

(4 citation statements)

References 19 publications

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“…An increase in the pozzolanic activity of TAC during grinding together with the addition of a plasticizer, by analogy with the processes occurring when obtaining binders of low water demand, is probably due to the effect of mechanochemical activation [15,16], the ability of the plasticizer encapsulated on the surface of the particles of the ground pozzolanic component to prevent their aggregation and increase uniformity of their distribution in the dough when mixing composite gypsum binder with water [17,18].…”

Section: Resultsmentioning

confidence: 99%

The effect of ground limestone on the properties of composite gypsum binder using thermally activated clay as a pozzolanic component

Халиуллин

Gilmanshina

2021

E3S Web Conf.

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The purpose of this research is to study the effect of methods of preliminary preparation of thermally activated clay, which is a pozzolanic component in water-resistant composite gypsum binders, as well as the effect of mechanochemical activation in the joint grinding of thermally activated clay with the addition of a plasticizer on the pozzolanic activity and the change in the required number of pozzolanic component in the composition of composite gypsum binders. It was found that the required amount of thermally activated clay as pozzolanic component in the gypsum-cement-pozzolan composition when ground to specific surfaces of 200-500 m2/kg together with the addition of Melflux 2651 F plasticizer, based on the exclusion of conditions for the formation of an unacceptable amount of ettringite, decreases by 20-25% compared with the use of thermally activated clay ground without the introduction of a plasticizer. The optimal amount of Melflux 2651 F plasticizer introduced by grinding with thermally activated clay has been determined. The significance of the results for the construction industry lies in the fact that the use of the technology of obtaining composite gypsum binders of grinding thermally activated clay to a certain dispersion with the introduction of a plasticizer additive due to the effect of mechanochemical activation makes it possible to reduce the consumption of the pozzolanic component in the binder composition or energy consumption for grinding.

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Section: Resultsmentioning

confidence: 99%

The effect of ground limestone on the properties of composite gypsum binder using thermally activated clay as a pozzolanic component

Халиуллин

Gilmanshina

2021

E3S Web Conf.

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“…Для уменьшения интенсивности накапливания остаточных деформаций в щебеночных слоях их армируют геосинтетическими материалами [9,10,11,12,13,14,33,34,35]. Кроме того, материалы и грунты стабилизируют или укрепляют вяжущими материалами [36,37,38,39], в том числе с использованием технологий холодной регенерации покрытий [40,41,42,43,44].…”

Section: раздел IIIunclassified

Сomparative analysis of methods for calculating stamp modules of soil deformation

et al. 2022

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Introduction. The purpose of the article is a comparative analysis of methods for calculating stamp modules of soil deformation regulated by various standards of the Russian Federation.Materials and methods. The experimental determination of the deformation modules for the soil of the roadbed was performed using stamp tests. The tests were carried out in a soil tray by loading and unloading a soil base compacted to the required compaction coefficient of 0.98. The load was applied by steps, and the stamp draft was measured after completion of deformation stabilization from each step. The criterion for stabilizing the deformation was a decrease in the speed to 0.02 mm / min and the time of application of the load, which should be at least 120 s. After measuring the elasto-plastic draft of the soil, the model was unloaded. Unloading is also carried out by steps. As a result, the dependences of the elasto-plastic and elastic draft of the soil model of the roadbed from the pressure in the form of hysteresis loops are constructed.Results. The calculations of the soil deformation modulus were performed according to the various methods regulated by the standards of the Russian Federation. The calculation results are grouped into data samples that are processed by mathematical statistics methods. When processing data, each sample is checked for the presence of gross errors. The data samples are checked for belonging to one general population. To check whether three samples belong to one general population, the Kruskal W. H. and Wallis W. A. criterion was applied. Based on this comparison, we made judgments about the significance of differences in the samples.Discussion and conclusions. To determine the deformation modulus of soil and road pavements made of granular materials, a method for calculating the modulus of deformation using a method that assumes a nonlinear dependence of deformations on pressures, described by a second-degree polynomial is recommended.

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“…Comprehensive solution of issues related to ensuring road safety through the use of the latest technologies and equipment is one of the prerequisites for the successful functioning of road infrastructure facilities. Based on the analysis of statistical data, most of all road accidents in cities occur with the participation of pedestrians, which are the largest and most vulnerable category of road users [3].…”

Section: Analysis Of the Current State Of The City's Road Networkmentioning

confidence: 99%

Formation of a comfortable transport infrastructure for cyclist traffic in the tourist area of Kazan

Ibragimova

Petropavlovskikh

2021

E3S Web Conf.

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This article examines the issue of cycling in Russian cities on the example of the city of Kazan. The authors come to the conclusion that the existing bicycle zones in Kazan aren’t connected to each other and don’t intersect complex transport hubs with high traffic intensity, therefore, cycling around the city isn’t safe and comfortable. As a solution to this problem, the idea of a new combined overpass, combining a pedestrian and roadway for cyclists, is presented. In addition, it’s proposed to develop the street and road network of the city of Kazan, through the construction of new bicycle paths. The combined overpass will allow for a more rational redirection of the city's traffic flows, ensure the safety of high-speed traffic and create comfortable conditions for the city's population. The construction of a bicycle path will reduce the total traffic load on the city's roads, and ensure safe movement for citizens in the central part of the city. Thus, the need to introduce and develop bicycling in our city, which entails planning not only bicycle paths, but also the construction of other transport infrastructure facilities for comfortable crossing of transport hubs with high traffic intensity by cyclists, seems obvious.

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Modification of Road Soil Cement with Activated Fillers

Cited by 11 publications

References 19 publications

The effect of ground limestone on the properties of composite gypsum binder using thermally activated clay as a pozzolanic component

The effect of ground limestone on the properties of composite gypsum binder using thermally activated clay as a pozzolanic component

Сomparative analysis of methods for calculating stamp modules of soil deformation

Formation of a comfortable transport infrastructure for cyclist traffic in the tourist area of Kazan

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