EXPERIMENTAL STUDY OF THE EFFECT OF WATERPROOF MATERIAL ON WATER-THERMAL REGIME OF THE SOIL SAMPLE

2015 ◽  
Vol 5 (4) ◽  
pp. 53-58
Author(s):  
Tatiana Vladimirovna PERMITINA
Keyword(s):  
Experimental Study ◽  
Soil Sample ◽  
Active Layer ◽  
Thermal Regime ◽  
Mechanical Characteristics ◽  
Road Construction ◽  
The Road ◽  
Far North ◽  
Temperature And Humidity ◽  
Physical And Mechanical Characteristics

This article deals with the problem of water and thermal regime of subgrade of the road in the far north. The measures to regulate water and thermal regime of soil of roadbed are described. An experimental study to evaluate the effect of the waterproof materials on the temperature and humidity regime of the road construction. The tasks, aimed at identifying patt erns of change in the physical and mechanical characteristics and the migration of moisture in the subgrade of the road and in the active layer of permafrost, reinforced waterproof element, are set.

scholarly journals Experimental Study on Recycling of Bituminous Aggregate in Cement Concrete

2021 ◽  
Vol 9 (VI) ◽  
pp. 5392-5398
Author(s):  
Manoj Kumar Mishra
Keyword(s):  
Experimental Study ◽  
Road Construction ◽  
Construction Cost ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Cement Concrete ◽  
Cost Component ◽  
The Road ◽  
Total Construction Cost ◽  
Recycled Material

Recycling of bituminous aggregates in cement concrete has been selected for the present study to determine suitability of recycled material in road construction. This will help in achieving economy in road construction as well as saving on environment degradation in term of reduced mining and less pollution. Construction and maintenance of roads and highways involve millions of tonnes of aggregate. Considering the scarcity of fresh aggregate, replacement of part of the fresh aggregate with recycled aggregate is considered in the present study. Construction of the road is quite cost intensive. Material alone cost more than 60% of the total construction cost, out of which aggregate cost component, is approximately 30%. We can use recycled aggregate in place of fresh aggregate in construction of road and provide economy to the project. For making best use of recycled aggregates, it is essential to study the suitability of the same in various pavement components. In the present study recycled aggregate are used in Granular Sub Base (GSB) and Wet Mix Macadam (WMM).

Influence of the Mechanical Activation of Fly Ash on Strength of Ground Concrete Based on Waste Production

2021 ◽  
Vol 25 (11) ◽  
pp. 36-41
Author(s):  
D.V. Bespolitov ◽  
N.A. Konovalova ◽  
O.N. Dabizha ◽  
P.P. Pankov ◽  
E.A. Rush
Keyword(s):  
Fly Ash ◽  
Specific Surface ◽  
Mechanical Activation ◽  
Equilibrium Condition ◽  
Mechanical Characteristics ◽  
Road Construction ◽  
Waste Production ◽  
Direct Use ◽  
Silicon Oxygen ◽  
Physical And Mechanical Characteristics

The possibility of utilization of inactive fly ash in road concrete compositions by bringing of ash into a non-equilibrium condition with increased reactivity by mechanical activation in a vibration eraser is investigated. It was revealed that the optimal content of binder and fly ash in samples of soil concrete was 8 and 10 wt. %, respectively. It is shown that, due to mechanical activation, the specific surface area of fly ash increases by 2 times, dehydration and carbonization occur and silicon is replaced by aluminum in silicon-oxygen tetrahedra. It has been established that an increase of the content of crystalline carbonate phases is the reason for an increase in the strength of ground concrete. It is determined that the introduction of mechanoactivated fly ash into the composition of soil concretes contributes to increasing their physical and mechanical characteristics to the maximum strength grade M100. This indicates the competitiveness of ground concrete and the possibility of direct use of inactive fly ash in road construction.

scholarly journals Does long-term storage of clay samples influence their mechanical characteristics?

2020 ◽  
Vol 57 (2) ◽  
pp. 304-309 ◽  
Author(s):  
Mustapha Abdellaziz ◽  
Mahmoud N. Hussien ◽  
Mohamed Chekired ◽  
Mourad Karray
Keyword(s):  
Mechanical Characteristics ◽  
Long Term Storage ◽  
Temperature And Humidity ◽  
Before And After ◽  
Prime Objective ◽  
Term Storage ◽  
Physical And Mechanical Characteristics

The prime objective of this study is to assess the influence of long-term storage on the physical and mechanical characteristics of clay samples. Samples from two different clays were sealed and stored in a temperature- and humidity-controlled room at the geotechnical laboratory of the Université de Sherbrooke for up to 27 years. The stored clay samples were tested before and after long-term storage and the results compared in this note. The comparison showed that even with long-term storage, the majority of the physical and mechanical characteristics of the samples were preserved.

scholarly journals Mathematical and experimental study of deformations of a steel roll of a road roller with a variable geometry of a contact surface

2019 ◽  
Vol 25 (25) ◽  
pp. 1-7
Author(s):  
Mikhail Doudkin ◽  
Alina Kim ◽  
Murat Sakimov
Keyword(s):  
Experimental Study ◽  
Contact Surface ◽  
Road Construction ◽  
Construction Equipment ◽  
Variable Geometry ◽  
Approximate Methods ◽  
Steel Roll ◽  
The Road ◽  
Elliptical Shape ◽  
Circular Design

Abstract The lack of a common methodology on compaction theory stimulates developers of road construction equipment to create various approximate methods for their calculation, the number of which, at the present time, is comparable with the nomenclature of the proposed designs of rollers. The article presents the analysis of the deformable shell behavior of a road roller, and the compacted material under its compacting roller, in a situation when a rigid circular shell of the roller is replaced by a forcefully deformable elliptical shape, which, unlike the circular design, allows variation, adjustment and optimization of the road roller impact on the material to be compacted.

scholarly journals Road plates with increased strength characteristics

2018 ◽  
Vol 212 ◽  
pp. 05003 ◽  
Author(s):  
Igor Ivanov ◽  
Andrey Komarov ◽  
Victoria Rosina
Keyword(s):  
Service Life ◽  
Mechanical Characteristics ◽  
Strength Characteristics ◽  
Long Period ◽  
Fiber Concrete ◽  
Temperature And Humidity ◽  
Increased Strength ◽  
Physical And Mechanical Characteristics

The issues of creating road plates with increased operational properties are considered in this paper. Monolithic concrete has a number of disadvantages, such as a long period of strength accumulation, temperature and humidity regime, and the inability to produce works throughout the year. The analyzed material for the production of road slabs (fiber concrete) makes it possible to produce plates with increased strength characteristics, to prolong service life, and to improve their physical and mechanical characteristics.

Experimental Study of Fiber-Reinforced Concrete Structures

2019 ◽  
Vol 945 ◽  
pp. 115-119 ◽  
Author(s):  
Sergey V. Klyuev ◽  
T.A. Khezhev ◽  
Yu.V. Pukharenko ◽  
A.V. Klyuev
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Chemical Composition ◽  
Mechanical Characteristics ◽  
Steel Fibre ◽  
Fiber Reinforced Concrete ◽  
Reinforced Concrete Structures ◽  
Fine Grained ◽  
Fiber Concrete ◽  
Physical And Mechanical Characteristics

Acute questions of steelfiber using for disperse-reinforced fine-grained concrete are considered in the article. Researchers of steelfiber concrete patterns are held. The efficiency of using crushing dropout of quartzitic sandstone is proven. The article studies the physical and mechanical characteristics of the filler. The chemical composition of the binder is presented. For dispersed reinforcement of fine concrete the influence of steel fibre on the strength characteristics of the mixture was studied. The characteristics of the fiber and the technology of obtaining a fiber-concrete mixture are presented. Studies showed the effectiveness of steel fibre with a percentage of 3% and a cement-sand ratio of 1/3.

scholarly journals Road surface quality as the basis of safe operation of transport systems

2018 ◽  
Vol 216 ◽  
pp. 01016
Author(s):  
Pavel Grekhov ◽  
Sergey Levashov ◽  
Vladimir Shkrabak ◽  
Roman Shkrabak
Keyword(s):  
Mechanical Characteristics ◽  
Road Surface ◽  
Transport Systems ◽  
Operational Parameters ◽  
Dispersion Parameters ◽  
The Road ◽  
Salt Mass ◽  
Road Surfaces ◽  
Physical And Mechanical Characteristics ◽  
Bitumen Emulsions

The safe functioning of the transport system mainly depends on the quality of road surfaces. Therefore, improvement of the physical and mechanical characteristics of roads will ensure the effective protection of health and safety of people engaged in this field. Consequently, modification of the physical and mechanical characteristics of road surfaces will ensure safety in the field of transport systems. Bitumen-salt mass was used as a modifier of the road bitumen emulsions and such a mass was obtained by means of destructing the chemical weapons of the organophosphorus class of compounds since they have an effect of surface-active substances. Studying of the modified road surface parameters was carried out according to the dispersion parameters and using the method of mathematical design of the experiment. As a result, the positive effect of the bitumen-salt mass on the dispersion distribution of the bitumen phase in the bitumen emulsion was determined. The proposed method of modification of the bitumen emulsions allowed us to improve the operational parameters of the road surfaces, and thus the safety of road transport systems as a whole.

scholarly journals Experimental study of admixture on soil’s physical and mechanical characteristics

2017 ◽  
Author(s):  
Zihong Guo ◽  
Tangyong Li ◽  
Dongke Yu ◽  
Hua Tang ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Mechanical Characteristics ◽  
Physical And Mechanical Characteristics
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