Utilisation of bottom ash in road construction: evaluation of the environmental impact

2001 ◽  
Vol 19 (6) ◽  
pp. 545-556 ◽  
Author(s):  
V. Bruder-Hubscher ◽  
F. Lagarde ◽  
M. J. F. Leroy ◽  
C. Coughanowr ◽  
F. Enguehard
Keyword(s):  
Environmental Impact ◽  
Bottom Ash ◽  
Road Construction

Evaluation Indexes System for Assessing Road Construction with Recycled Waste Materials to Achieve Better Environmental Impacts

2011 ◽  
Vol 250-253 ◽  
pp. 1001-1006 ◽  
Author(s):  
De Zhen Chen ◽  
Cui Jie Geng ◽  
Wen Zhou Sun
Keyword(s):  
Energy Consumption ◽  
Environmental Impact ◽  
Waste Disposal ◽  
Large Scale ◽  
Construction Material ◽  
Bottom Ash ◽  
Road Construction ◽  
Waste Materials ◽  
Evaluation Indexes ◽  
Recycled Waste

Evaluation indexes system has been put forward in this paper for quantifying thesystematical energy consumption, resources consumption, total emissions’ change and waste disposal capacity in road construction with recycled waste materials involved. With help of this evaluation indexes system, the contributions to environmental improvement caused by recycling waste materials in road construction can be quantified through calculating savings on environmental impact potentials, savings on energy consumption, on virgin materials’ consumption and waste disposal capacity provided by road construction. Based on the construction project of a road section numbered No.20 EWK0+400 ~ EWK0+600 of North highway to Shanghai Pudong international airport, which was the first trial project of using several kinds of recycled waste materials including bottom ash from incinerators to replace commonly used materials such as gravel in large scale in road pavement, the results of the four indexes, namely, savings on energy consumption and virgin materials’ consumption, environmental impact potentials as well as waste disposal capacity were obtained. It was found out that with multi recycled waste materials replacing part of the common construction material, systematical energy consumption can be reduced by 30%, a large amount of virgin resource consumption can be avoid and road construction also provides a remarkable large “dumping site” for solid wastes; while at the same time environmental impact potentials were saved for most impact categories except for increase in Ecotoxicity, water chronic, which was caused by heavy metals’ leaching and can be prevented by pre-treatment. Those results are useful for guiding the utilization of recycled waste materials, as well as for developing new technology process and advanced materials in road construction.

scholarly journals Overcoming the procedures for obtaining a location permit for the Podravska high-speed road project

2021 ◽  
Vol 3 (1) ◽  
pp. 060-071
Author(s):  
Bašić Marija ◽  
Kranjčić Nikola ◽  
Jug Jasmin ◽  
Đurin Bojan
Keyword(s):  
Environmental Impact ◽  
High Speed ◽  
Road Construction ◽  
Impact Study ◽  
Road Design ◽  
Preliminary Work ◽  
Complex Process ◽  
Road Project ◽  
Infrastructure Project ◽  
Environmental Impact Study

Roads are important infrastructure facilities that enable traffic accessibility, i.e. they improve the quality of transport communication between people, goods and innovations. The Podravina high-speed road project was designed with the aim of developing Podravina and Slavonia and enabling a better connection between them and the rest of Croatia. Road construction is a complex process that requires a location permit before construction begins. This paper is written with the aim of presenting in detail the process of obtaining a location permit, which is preceded by obligatory preliminary work. Its complexity depends on the type of a road, its purpose and characteristics of the area through which a planned road passes. The Podravina high-speed road is the largest infrastructure project in that part of Croatia and therefore detailed preliminary work is required. This paper describes some types of preliminary work which include geological, geomechanical and climatic tests. The paper presents a project justification study, an environmental impact study, an environmental impact study, a construction and a technical study as well as a spatial transport analysis. Based on the chosen Podravina high-speed road route, a general design was created by using a road design software program “Platea”.

scholarly journals Lime Treatment of Coal Bottom Ash for Use in Road Pavements: Application to El Jadida Zone in Morocco

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2674 ◽  
Author(s):  
Souad El Moudni El Alami ◽  
Raja Moussaoui ◽  
Mohamed Monkade ◽  
Khaled Lahlou ◽  
Navid Hasheminejad ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Low Cost ◽  
Thermal Power ◽  
Experimental Studies ◽  
Bottom Ash ◽  
Coal Ash ◽  
Road Construction ◽  
Dry Density ◽  
Second Phase ◽  
Lime Treatment

Industrial waste causes environmental, economic, and social problems. In Morocco, the Jorf Lasfar Thermal Power Station produces two types of coal ash with enormous quantities: fly ash (FA) and Bottom ash (BA). FA is recovered in cement while BA is stored in landfills. To reduce the effects of BA disposal in landfills, several experimental studies have tested the possibility of their recovery in the road construction, especially as a subbase. In the first phase of this study, the BA underwent a physicochemical and geotechnical characterization. The results obtained show that the BA should be treated to improve its mechanical properties. The most commonly used materials are lime and cement. In the selected low-cost treatment, which is the subject of the second phase of the study, lime is used to improve the low pozzolanicity of BA while calcarenite sand is used to increase the compactness. Several mixtures containing BA, lime, and calcarenite sand were prepared. Each of these mixtures was compacted in modified Proctor molds and then subjected to a series of tests to study the following characteristics: compressive strength, dry and wet California Bearing Ratio (CBR), dry density and swelling. The composition of each mixture was based on an experimental design approach. The results show that the values of the compressive strength, the dry density, and the CBR index have increased after treatment, potentially leading to a valorization of the treated BA for use in a subbase.

Feasibility of Reutilizing Municipal Solid Waste Incineration Residues as Construction Materials

2012 ◽  
Vol 164 ◽  
pp. 289-292 ◽  
Author(s):  
Rui Jing Zhang ◽  
Yan Jun Hu
Keyword(s):  
Heavy Metals ◽  
Solid Waste ◽  
Bottom Ash ◽  
Construction Materials ◽  
Fine Fraction ◽  
Road Construction ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Road Base ◽  
Incineration Residues

Abstract: The presented study mainly focused on investigating detailed engineering properties of municipal solid waste incineration residues as road construction materials with different application classes. Also, the leachability of heavy metals and salts in the residues as a function of the ratio of liquid and solid was tested. The Chinese specifications about road construction materials were employed to evaluate the application capacity of the waste incineration residues. The obtained results indicate that bottom ash basically complies with the technical requirements for road base and sub-base materials with exception of the low compataclity and high organic content of the fine fraction. The toxicity test showed that bottom ash can satisfy the limit values of heavy metals and salts that was established by Chinese specification for hazard solid waste. For the application of the ash in road base, it should be mixed with other materials to improve the compataclity. Pretreatment of fine fraction of bottom ash to remove organic matter is necessary.

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