scholarly journals Improving the physical and mechanical properties of fortified soil for road construction in the forest zone

2020 ◽  
Vol 817 ◽  
pp. 012007
Author(s):  
S Chudinov
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Forest Zone

Frost Heaving Soil Road Use Synthetic Adhesive Reinforcement Method

2013 ◽  
Vol 740 ◽  
pp. 759-762
Author(s):  
Hao Zeng Bao
Keyword(s):  
Mechanical Properties ◽  
Industrial Waste ◽  
Construction Materials ◽  
Reference Value ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Experimental Methods ◽  
Frost Heaving ◽  
The World ◽  
Rock And Soil

In many areas, there are still a development road construction materials, traditionally, often use reinforced concrete, asphalt and other adhesive method to strengthen the low strength of rock and soil anti-freeze expansion coefficient; And now all countries in the world are studying how to use industrial production waste development of new composite materials. One of the most development potential, the production of industrial waste - slime. This paper USES the Russian kazan national construction university experimental methods, in the experiment to improve frost heaving soil physical and mechanical properties of the method for the synthesis of adhesive, based on the feasibility and applicability, environmental assessment of research and analysis, for the use of adhesive put forward a lot of reference value.

Application of New Soil Consolidator in Road-Construction Engineering

2012 ◽  
Vol 238 ◽  
pp. 466-469
Author(s):  
Hong Zhang ◽  
Dong Liang Xun ◽  
Zhao Yang ◽  
Fu Quan Ji
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Point Of View ◽  
Curing Time ◽  
Construction Engineering ◽  
Geological Conditions ◽  
Silt Layer

This paper contrastively analyses the consolidation instances of silt with HEC and HAS soil consolidators, also emphatically discusses the influence regularities of the compressive strength of solidified soil with the following factors: the dose of consolidators and the curing time. Meanwhile, from the point of view of experiment, this paper studies the physical and mechanical properties of solidified soil. Case study shows that HEC and HAS soil consolidators behave as well as cement and lime in road-construction engineering, and even that filling subgrade independently. Also, this paper proposes the appropriate value 6% of HEC and HAS soil consolidators for solidifying silt layer, which can be used as reference for the similar geological conditions.

scholarly journals THE PROSPECTS MANUFACTURE OF RECYCLED HOT MIX ASPHALT WITH FIBER PLASTIC REINFORCEMENT

2017 ◽  
Vol 1 (48) ◽  
pp. 258-264
Author(s):  
V. V. Ilchenko ◽  
V. V. Tymoshevskyi ◽  
R. A. Mishchenko ◽  
D. S. Lyashko ◽  
V. V. Riznyk
Keyword(s):  
Mechanical Properties ◽  
Industrial Waste ◽  
Hot Mix Asphalt ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Preparation Technology ◽  
Fiber Plastic ◽  
Fiber Addition

The most common ways of milled asphalt re-use, what is formed during road topping repair is considered. The results of experimental studies of preparation technology features and physical and mechanical properties of recycled hot mix asphalt determination based on milled asphalt with plastic fiber addition that obtained from industrial waste is presented. Defined regulations correspondence obtained recycled hot mix asphalt and ways of their use in road construction is determined.

scholarly journals USE OF SHELL-CONTAINING SOIL IN TRANSPORT CONSTRUCTION

2020 ◽  
pp. 8-15
Author(s):  
M. Vysotskaya ◽  
M. Lashin ◽  
A. Kurlykina
Keyword(s):  
Mechanical Properties ◽  
Mechanical Load ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
The Body ◽  
Filtration Coefficient ◽  
Construction Sites ◽  
Maximum Increase ◽  
Input Control ◽  
Partial Remainder

The article deals with the problem of using soils represented by sand with a significant content of shell in the construction of embankments of railways and highways. The review of literature sources on this topic did not yield any results, which aroused interest in the possibility of using this soil. Research has been carried out to determine the main physical and mechanical properties of shell sand. Data showing the dynamics of changes in the physical and mechanical properties of the soil during compaction are obtained. The dependence of the reduction of partial residues from 10 to 0.1 sieves is revealed. The maximum increase in the partial remainder occurs on the screen 0,1. Obviously, these changes are the result of grinding the soil under the influence of a large mechanical load and are one of the factors reducing filtration in this soil. It is found that the value of the filtration coefficient at the input control is 2.58 m/day., after compaction of the same soil in the body of the embankment, the filtration coefficient fell to-1.51 m/day. Thus, there is a decrease in the filtration coefficient after compaction of the soil by 41.5% in comparison with the input tests of the soil. The need for further research to find technological solutions for the use of such soil on road construction sites is justified.

Influence of Structural Parameters of Nonwoven Geotextiles on Separation and Filtration in Road Construction

2020 ◽  
Vol 20 (4) ◽  
pp. 449-460
Author(s):  
Špela Bezgovšek ◽  
Dunja Šajn Gorjanc ◽  
Boštjan Pulko ◽  
Stanislav Lenart
Keyword(s):  
Mechanical Properties ◽  
Structural Properties ◽  
Structural Parameters ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Knitted Fabrics ◽  
Compression Creep ◽  
Filtration Properties ◽  
Mechanical Bonding ◽  
Bonding Technique

AbstractNonwoven geotextiles are often used in road construction as a separation layer. They consist of the web of fibers with different orientations. The orientation of fibers has an important influence on physical and mechanical properties of nonwoven geotextiles. The production of nonwoven geotextiles is cheaper in comparison to woven or knitted fabrics which can also be used as separation geotextiles. The purpose of this research was to study the influence of structural properties of nonwoven geotextiles, namely the diameter of fibers and mass and thickness of nonwoven geotextiles, on their mechanical and hydraulic properties. Six types of nonwoven geotextiles were used in the research. They were produced by the drylaid process (carded) using mechanical bonding technique and also with the combination of mechanical and thermal bonding technique. The research confirmed that the bonding technique and structural properties significantly influence the separation and filtration properties of nonwoven geotextiles, such as opening size and water permeability. It was also found that there are no significant differences in mechanical properties, such as viscoelastic properties and compression creep, between the samples in the dry and wet conditions.

Physical and mechanical properties recycled hot mix asphalt based on milled asphalt with the plastic fiber addition

2021 ◽  
Vol 2021 (23) ◽  
pp. 76-85
Author(s):  
Oksana Demchenko ◽  
◽  
Roman Mishchenko ◽  
Volodymyr Ilchenko ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hot Mix Asphalt ◽  
Asphalt Pavement ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Household Waste ◽  
Gradual Improvement ◽  
The Road ◽  
The Cost ◽  
Fiber Addition

Introduction. The current state of the network of public roads due to the negative impact of climatic factors and ever-increasing traffic loads characterized by significant amounts of deformation and destruction of the road structure so requires significant material costs for maintenance and gradual improvement of a transport and operational condition according to the operating regulatory requirements.Problem Statement. One of the promising areas to reduce the cost of road construction is manufacturing the recycled hot mix asphalt based on milled asphalt, which is usually formed in scarifying of the road surface layers during repair and construction works, with the plastic fiber addition obtained from household plastic waste. This combination of secondary materials will not only get the economic effect of reducing the cost of purchasing new road construction materials but also improve the environmental situation through the use of household waste.Purpose. Investigation of physical and mechanical properties of recycled hot mix asphalt based on milled asphalt with the plastic fiber addition Materials and Methods. It was established the manufacturing possibility of recycled hot mix asphalt based on milled asphalt with the plastic fiber addition. Test specimens performance measuring was conducted to determine the average density of the material, water saturation, swelling at ultimate compressive strength in the laboratory conditions according to standardized techniques by current regulations.Results. The results of experimental studies regarding the manufacturing features and physical and mechanical properties of recycled hot mix asphalt based on milled asphalt with the addition of plastic fiber obtained from household waste are shown.Conclusion. The correspondence of the manufactured specimens of recycled hot mix asphalt to regulations is established as well as its road construction application options.Keywords: asphalt pavement, recycled hot mix asphalt, hot recycled, milled asphalt, plastic fiber, (RHMA), reclaimed asphalt pavement (RAP).

scholarly journals Сonceptual Fundamentals for Technology of Sand Disperse-Reinforced Asphalt Concrete

2019 ◽  
Vol 18 (4) ◽  
pp. 269-273
Author(s):  
Ya. N. Kovalev ◽  
D. Yu. Alexandrov
Keyword(s):  
Mechanical Properties ◽  
Asphalt Concrete ◽  
Construction Materials ◽  
Basalt Fiber ◽  
Protective Layer ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Microscopy Study ◽  
Natural Sand ◽  
Operational Conditions

A problem of efficient resource usage in road branch continues to be one of the most complicated issues and requires an intensification in investigation process pertaining to possibilities for production of road construction materials of low resource intensity with high physical and mechanical properties. Technogenic wastes of the Belarusian enterprises are rather various and they need a detailed investigation. Application of such methods as IR spectrometry, probe microscopy, study of of geometric characteristics of particles and fibers make it possible to determine more active centres and reveal micro-defects that influence on strength of adhesion bond at the boundary of “fiber – binder” and physical and mechanical properties of ready-mixed asphalt concrete. Nature of basalt fiber presupposes mainly physical character of adhesion interaction at the boundary of phase separation. An increase of technogenic waste activity to enhance adhesion contacts up to chemisorption level is possible only due to preliminary fiber processing which includes cleaning, removal of foreign inclusions, etching, drying, probable sorting-out and fluffing. Industrial approbation of such technological process is not possible without development of a corresponding module or a plant. Disperse reinforment causes changes in composition and technology of sand asphalt concrete. An increase in specific surface of an aggregate, necessity of uniform distribution of fiber in terms of volume determine the required need in a binder, procedure and regimes for component mixing. Grain composition of the aggregate can be represented by crush screening and natural sand of mixture of these materials. Requirements to properties of sand disperse-reinforced asphalt concrete are formed on the basis of operational conditions and layer arrangement of the material in the design of a surface dressing. The disperse-reinforced sand asphalt concrete can perform functions of a superfine protective layer, a levelling layer or a crack stopping layer which is resistant to fatigue crack formation.

scholarly journals SUITABILITY ASSESSMENT OF GRETAGEOUS LIMESTONES FROM THERMO (AITOLOKARNANIA, WESTERN GREECE) FOR THEIR USE AS BASE AND SUB-BASE AGGREGATES IN ROAD-CONSTRUCTION

2017 ◽  
Vol 43 (5) ◽  
pp. 2501
Author(s):  
I. Mpalatsas ◽  
I. Rigopoulos ◽  
Β. Tsikouras ◽  
K. Hatzipanagiotou
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Suitability Assessment ◽  
Mineral Components ◽  
Western Greece

This paper focuses on the assessment of mineralogical, petrographical and physico-mechanical properties of limestone formations in order to evaluate their suitability as road construction aggregates. Research focuses on Olonos-Pindos zone limestones of Creataceous age in Aitoloakarnania province, Western Greece. Special emphasis was given on comparing the mechanical properties to the mineral components. The results were evaluated in accordance with Greek and International suitability Standards for road construction aggregates. It was finally concluded that the physical and mechanical properties of the tested rocks are in compliance with the suitability Standards and that they can be used as road-construction aggregates.

scholarly journals Use of anthropogenic soils in securing unstable road embankment

2018 ◽  
Vol 19 (6) ◽  
pp. 207-211
Author(s):  
Elżbieta Pilecka ◽  
Magdalena Moskal
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Strength Properties ◽  
Anthropogenic Soils ◽  
Rigorous Testing ◽  
Water Conditions ◽  
Ground Material ◽  
Soil And Water

In the article the problem of anthropogenic soils from thermal treatment of waste in terms of their use in road construction is discussed. As part of the research, the basic physical and mechanical properties of the anthropogenic soils were determined. PN-S-02205: 1998, the analyzed ground material (fly ash and slag mixture) qualifies as useful for embedding into the lower layers of the embankment below the freezing zone, provided they are in dry places or are insulated from water. The next step was to model an exemplary, unstable road embankment in the MIDAS GTS NX. The results point out that the strength and physical properties of the anthropogenic soils may be used to secure unstable road embankments with simple soil and water conditions. It should be remembered that analysed anthropogenic soils should also be subjected to rigorous testing for their chemical composition. The obtained results will allow us to determine the possibilities of their use in road construction in terms of their strength properties.

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