Prospects of using the industrial waste in constructive layers of road pavement

This paper presents results of exploration related to C2 and C6 crushed-stone-and-sand ready mixtures strengthened with limestone powder used in road pavement layers. Limestone powder is an industrial waste, which in Ararat region is in big volumes. The samples were taken composed of different fractions of crushed-stone and two types of sand produced from crushed basalt and crushed gravel, and were tested. The composition of ready mixtures meets the requirements of corresponding standard on grain size. To these mixtures limestone powder was added of the percentage range 0-30% of the mixture mass. The main purposes of experimental exploration were to determine the influence of different percentages of limestone powder on compression strength of crushed-stone-and-sand ready mixtures and optimal content of powder. The change of the influence grade was studied by applying different types of sands. Three cylindrical samples were made for each percentage of limestone powder according to a standard method. Compressive strengths of samples have been determined. It was concluded, that the applying limestone powder in C2 and C6 ready mixtures contributes to the cohesion of stone grains as well as to obtaining high indicators of compaction in road pavement layers. The received results allow to arrive to a conclusion that applying limestone powder according to the optimal range distinctly increases the strength characteristics of crushed-stone-sand ready mixtures which in tur contributes the effective implementation of the compacting process. Especially the influence grade is considerable in C6 ready mixtures containing a large amount of crushed stone, as well as in mixtures using sands with smaller fineness modulus.

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Potential Investigation of Stabilised Fuming Furnace Slag for Road Construction

The Journal of Solid Waste Technology and Management ◽

10.5276/jswtm/2021.499 ◽

2021 ◽

Vol 47 (3) ◽

pp. 499-512

Author(s):

A.K. Sinha ◽

M. Vinoth ◽

Vasant G. Havanagi ◽

S. Chandra

Keyword(s):

Shear Strength ◽

Industrial Waste ◽

Road Construction ◽

Waste Material ◽

Engineering Properties ◽

Coarse Grained ◽

Waste Materials ◽

Road Pavement ◽

Granular Layers ◽

Zinc Industry

Fuming furnace (FF) slag is one of the industrial waste materials which is generated during extraction of zinc metal at the zinc industry. It is deposited at the designated FF slag yard near the plant area with very limited use. As a result, the deposits are increasing year after year posing threat to the environment and occupying large area of precious land. The present research explores the possibility of using this waste material in the road construction. The tests like Scanning electron microscope (SEM), Energy dispersive spectrometer (EDS) and X-ray diffraction was carried out on FF slag. To improve its geotechnical properties, it was mechanically stabilised with jarofix (another waste material generated from the same zinc industry) in the range of 25 to 75 percent. Apart from compaction characteristics, shear strength and consolidation characteristics of these mixes were studied to conclude about its feasibility in embankment and granular layers of road pavement. These mixes were further chemically stabilized with cement in the range of 3 to 9 percent to investigate their potential application in sub base and base layers of road construction. Compressive and durability characteristics of these mixes were also studied. Detailed laboratory study concluded that FF slag is a porous; amorphous cohesionless coarse grained material with high angle of internal friction. Engineering properties viz. dry density, CBR, and shear strength characteristics improved significantly after mechanical stabilisation with jarofix. These parameters of FF slag were compared with other industrial waste materials. Unconfined compressive strength and durability characteristics indicated suitability of cement stabilised slag-jarofix mixes for sub base and base layers of road pavement. It was concluded that about 20-30 percent of FF slag can be used as a replacement of fine aggregate in these granular layers. A typical pavement design indicated that it is possible to reduce the total pavement thickness of about 13 percent by using cement stabilised slag-jarofix mix.

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EFFECTIVE UTILIZATION OF INDUSTRIAL WASTE & AGRICULTURE WASTE IN CONCRETE AND SOIL FOR ROAD PAVEMENT”

International Journal of Advance Engineering and Research Development ◽

10.21090/ijaerd.42902 ◽

2017 ◽

Vol 4 (07) ◽

Keyword(s):

Industrial Waste ◽

Agriculture Waste ◽

Effective Utilization ◽

Road Pavement

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Mining Industrial Waste For Medicine

Chemical & Engineering News ◽

10.1021/cen110210133806 ◽

2010 ◽

pp. 110210133806

Author(s):

Rachel Zurer

Keyword(s):

Industrial Waste

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CREDO RADON UA – INFORMATION MODEL FOR CALCULATION OF ROAD CONSTRACTION

Avtoshliakhovyk Ukrayiny ◽

10.33868/0365-8392-2019-3-259-34-42 ◽

2019 ◽

pp. 34-42

Author(s):

Volodymyr Karedin ◽

Nadiya Pavlenko

Keyword(s):

Design Process ◽

Static Loading ◽

Computer Aided Design ◽

Experimental Studies ◽

Construction Materials ◽

Residual Deformation ◽

Road Construction ◽

Information Support ◽

Existing Structures ◽

Road Pavement

CREDO RADON UA software provides an automated calculation of the strength of the pavement structures of non-rigid and rigid types, as well as the calculation of the strengthening of existing structures. In the article, one can see the main features and functionality of the CREDO RADON UA software, the main points in the calculations according to the new regulations. Information support of the design process includes necessary databases, informational and helping materials that make up the full support of the pavement design process. The concept of CREDO RADON UA 1.0 software is made on the use of elasticity theory methods in calculations of initial information models of pavements. Performing optimization calculations, the roadwear in CREDO RADON UA is designed in such a way that no unacceptable residual deformation occurs under the influence of short-term dynamic or static loading in the working layer of the earth bed and in the structural layers during the lifetime of the structure. The calculation algorithms were made in accordance with the current regulatory documents of Ukraine. CREDO RADON UA software allows user to create information bases on road construction materials and vehicles as part of the traffic flow for calculations. The presented system of automated modeling makes it easier for the customer to control the quality of design solutions, to reasonably assign designs to layers of reinforcement, to quickly make comparisons of calculations of different designs for the optimal use of allocated funds. Prospects for further improvement of the program should be the results of theoretical and experimental studies on filling the databases, which are used as information support for automated design of road structures. Keywords: CREDO RADON UA, road, computer-aided design, repair project, road pavement, strengthening, construction, rigid pavement, elasticity module, a transport stream, calculation method, information support, dynamic or static loading.

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