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Journal articles on the topic 'Materials, recycling, portland cement concrete, road construction'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Konovalova, Natalia, Elena Rush, Dmitry Bespolitov, and Pavel Pankov. "Soil concrete based on waste of heat power engineering and siftings of rock grinding." E3S Web of Conferences 140 (2019): 05015. http://dx.doi.org/10.1051/e3sconf/201914005015.

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The possibility of recycling large-tonnage waste of heat power engineer-ing and mining industry in road construction is shown. Compositions of road-building materials were researched, containing siftings of rock grinding, fly ash, Portland cement, modified with a stabilizing additive of polymeric nature. X-ray phase analysis showed availability of quartz in fly ash, calcite, feldspars, goethite and X-ray amorphous phase, what is consistent with the data of infrared spectroscopy. By atomic emission spectrometry with inductively coupled plasma it was revealed that fly ash is latent-active and ca

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Arif Kamal, Mohammad. "Recycling of Fly Ash as an Energy Efficient Building Material: A Sustainable Approach." Key Engineering Materials 692 (May 2016): 54–65. http://dx.doi.org/10.4028/www.scientific.net/kem.692.54.

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Fly Ash, known for its proven stability for variety of applications as admixture in cement, concrete, mortar, lime pozzolan mixture (bricks. blocks) etc, is an industrial by-product from Thermal Power Plants with current annual generation of approximately 108 million tones. Fly Ash is not just environment friendly, but is known for its cost effectiveness as well. Its use as a building material helps increase buildings strength and stability. Fly Ash is believed to be a very promising alternative for the industry seeking to meet its development objectives. Fly Ash is being very effectively and

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3

Martinez-Arguelles, Gilberto, Maria Paola Acosta, Margareth Dugarte, and Luis Fuentes. "Life Cycle Assessment of Natural and Recycled Concrete Aggregate Production for Road Pavements Applications in the Northern Region of Colombia: Case Study." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 5 (2019): 397–406. http://dx.doi.org/10.1177/0361198119839955.

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The environmental impacts of natural aggregates (NA) and recycled concrete aggregates (RCA) production for use in road pavements have been evaluated in this study through an attributional life cycle assessment (LCA) from cradle to gate. Such effort is relevant considering the increasing interest of national agencies in applying recycled aggregates for construction and rehabilitation (C&R) of highway infrastructures. The study used site-specific data from two different aggregate production plants, stationary and mobile, both located in the northern region of Colombia. The stationary facilit

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Cross, Stephen A., Mohamed Nagib Abou-Zeid, John B. Wojakowski, and Glenn A. Fager. "Long-Term Performance of Recycled Portland Cement Concrete Pavement." Transportation Research Record: Journal of the Transportation Research Board 1525, no. 1 (1996): 115–23. http://dx.doi.org/10.1177/0361198196152500113.

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Over the past years there has been an increasing interest in recycling construction materials, particularly hot-mix asphalt (HMA) and portland cement concrete pavements (PCCP). To this end the Kansas Department of Transportation (KDOT) participated in Demonstration Project 47, Recycling Portland Cement Concrete Pavement, by recycling a moderately D-cracked concrete pavement and monitoring the performance over a 10-year period. The recycled concrete pavement (RCP) aggregate was evaluated in four test sections consisting of two control sections, one test section of portland cement-treated base (

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Coppola, Luigi, Tiziano Bellezze, Alberto Belli, et al. "Binders alternative to Portland cement and waste management for sustainable construction—part 1." Journal of Applied Biomaterials & Functional Materials 16, no. 3 (2018): 186–202. http://dx.doi.org/10.1177/2280800018782845.

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This review presents “a state of the art” report on sustainability in construction materials. The authors propose different solutions to make the concrete industry more environmentally friendly in order to reduce greenhouse gases emissions and consumption of non-renewable resources. Part 1—the present paper—focuses on the use of binders alternative to Portland cement, including sulfoaluminate cements, alkali-activated materials, and geopolymers. Part 2 will be dedicated to traditional Portland-free binders and waste management and recycling in mortar and concrete production.

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Mazov, Ilya, Bekzod Khaydarov, Tamara Yudintseva, et al. "Metallurgical Slag-Based Concrete Materials Produced by Vortex Electromagnetic Activation." Key Engineering Materials 683 (February 2016): 221–26. http://dx.doi.org/10.4028/www.scientific.net/kem.683.221.

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The article presents the results of utilization of blast furnace slags as a source for preparation of clinker-free cement materials for road and civil construction. Simple and high-yield approach for mechanical activation of metallurgical slag with cheap chemical modifiers using Vortex Electromagnetic Activation (VEA) technique was demonstrated to produce cement with high mechanical properties. Such approach may be used for effective and low-energy utilization of industrial scale-produced slags in concrete materials. This paper describes simple high-yield approach to produce clinker-free cemen

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Shu, Xiang, and Baoshan Huang. "Recycling of waste tire rubber in asphalt and portland cement concrete: An overview." Construction and Building Materials 67 (September 2014): 217–24. http://dx.doi.org/10.1016/j.conbuildmat.2013.11.027.

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8

Reiner, Mark, Kevin Rens, and Anu Ramaswami. "The Role of HVFA Concrete in the Sustainability of the Urban Built Environment." Journal of Green Building 1, no. 4 (2006): 129–40. http://dx.doi.org/10.3992/jgb.1.4.129.

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Although fly-ash as a partial replacement for cement has been utilized for many years, its use has been almost exclusively used in low volume percentages such as 10% or 20% cement replacement. This paper looks at high volume percentage replacements from 40% to 70%. A mini-mix study revealed that 50% and 60% cement replacement percentages were the best candidates for full scale testing. The environmental benefits included a 25% reduction in smog, human health, and fossil fuel reduction compared to the same element built with 100% Portland cement mix. The economic benefits included a 15% capital

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Iwański, Marek, and Anna Chomicz-Kowalska. "Application of the foamed bitumen and bitumen emulsion to the road base mixes in the deep cold recycling technology." Baltic Journal of Road and Bridge Engineering 11, no. 4 (2016): 291–301. http://dx.doi.org/10.3846/bjrbe.2016.34.

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This paper presents findings of a study concerning the influence of binder type on the mechanical properties of road base in the cold recycling technology. The principal aim of this investigation was to evaluate the mixes in scope of susceptibility to moisture and low-temperatures. In the comparative research foamed bitumen and bitumen emulsion were used in four different concentrations (2.0%, 2.5%, 3.0%, 3.5%). The materials used in the study were reclaimed from an existing road construction layers: reclaimed aggregate from the road base and reclaimed asphalt pavement obtained by milling the

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Robayo-Salazar, Rafael A., William Valencia-Saavedra, and Ruby Mejía de Gutiérrez. "Construction and Demolition Waste (CDW) Recycling—As Both Binder and Aggregates—In Alkali-Activated Materials: A Novel Re-Use Concept." Sustainability 12, no. 14 (2020): 5775. http://dx.doi.org/10.3390/su12145775.

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This article demonstrates the possibility of producing alkali-activated materials (AAM) from a mixture of mechanically processed concrete, ceramic, masonry, and mortar wastes, as a sustainable alternative for recycling construction and demolition wastes (CDWs) under real conditions. The addition of 10% Portland cement allowed the materials to cure at room temperature (25 °C). CDW binder achieved a compressive strength of up to 43.9 MPa and it was classified as a general use and low heat of hydration cement according to ASTM C1157. The concrete produced with this cement and the crushed aggregat

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Cândido, Taíssa Guedes, Yane Coutinho, and Milton Bezerra das Chagas Filho. "Use of Construction and Demolition Waste in Lateritic Concrete." Key Engineering Materials 600 (March 2014): 386–95. http://dx.doi.org/10.4028/www.scientific.net/kem.600.386.

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In recent decades the problem of construction and demolition waste has been receiving more attention due to possible ecological and economic damage caused by them. This is because they are produced in large quantities and often receive inadequate disposal, being deposited illegally in vacant lots, public places and even in areas of environmental preservation. The practice of recycling of construction and demolition waste (CDW) by construction is an alternative that minimizes the amount of waste generated and the impacts caused by them. Moreover, the introduction of alternative materials might

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Zhu, G., Y. Hao, C. Xia, Y. Zhang, T. Hu, and S. Sun. "Study on cementitious properties of steel slag." Journal of Mining and Metallurgy, Section B: Metallurgy 49, no. 2 (2013): 217–24. http://dx.doi.org/10.2298/jmmb120810006z.

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The converter steel slag chemical and mineral components in China?s main steel plants have been analysed in the present paper. The electronic microscope, energy spectrum analysis, X-ray diffraction analysis confirmed the main mineral compositions in the converter slag. Converter slag of different components were grounded to obtain a powder with specific surface area over 400m2/kg, making them to take place some part of the cement in the concrete as the admixture and carry out the standard tests. The results indicate that the converter slag can be used as cementitious materials for construction

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Khan, Muhammad Imran, Huang Yong Huat, Mohammad Haziq bin Muhamad Dun, Muslich Hartadi Sutanto, Ehsan Nikbakht Jarghouyeh, and Salah E. Zoorob. "Effect of Irradiated and Non-Irradiated Waste PET Based Cementitious Grouts on Flexural Strength of Semi-Flexible Pavement." Materials 12, no. 24 (2019): 4133. http://dx.doi.org/10.3390/ma12244133.

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In this study the effect of irradiated and non-irradiated waste polyethylene terephthalate (PET) as replacement of cement and fly-ash in ordinary Portland cement (OPC) and geopolymeric cement (GPC) based cementitious grouts on flexural strength of semi-flexible pavement specimens were evaluated. The porous asphalt gradation was selected based on Malaysian specifications for semi-flexible pavements with a target of 30% air voids. The cement content in the OPC grouts and the fly-ash content in the GPC based grouts were partially replaced with 1.25% PET (using both irradiated and non-irradiated P

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Cardinale, Tiziana, Michele D’Amato, Roselena Sulla, and Nicola Cardinale. "Mechanical and Physical Characterization of Papercrete as New Eco-Friendly Construction Material." Applied Sciences 11, no. 3 (2021): 1011. http://dx.doi.org/10.3390/app11031011.

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The manufacturing of Portland cement is responsible for a big amount of energy and greenhouse gas (GHG) emission. Therefore, to date, it is imperative to find alternative materials to replace a major part of cement for sustainable concrete constructions. The present study forms a part of an on-going research project on the application of new cementitious matrices produced using different types of recycled materials. In particular, it focuses on the use of pulp and waste paper to partially replace Portland cement at varying percentages for producing a new lightweight mortar, frequently named pa

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Atef, Mohamed, Ghada Bassioni, Nahid Azab, and Mohamed Hazem Abdellatif. "Assessment of cement replacement with fine recycled rubber particles in sustainable cementitious composites." Journal of the Mechanical Behavior of Materials 30, no. 1 (2021): 59–65. http://dx.doi.org/10.1515/jmbm-2021-0007.

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Abstract Egypt plays an important role in the consuming markets for tires all over the world. There is an urgent need to get rid of them in an economic and environmental way since it is considered as a harmful waste if burnt. The World trend is directed towards the improvement of new techniques to insert the rubber into useful products to maximize the benefit of recycling. This research deals with the expansion of novel techniques for rubber powder recycling for various purposes in a robust construction. Recycled rubber particles (RRP) are mixed with ordinary Portland cement (OPC) using variou

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Liu Tingguo, V. N. Zankavich, Yu N. Aliakseyeu, and B. M. Khroustalev. "Recycling of Materials for Pavement Dressing: Analytical Review." Science & Technique 18, no. 2 (2019): 104–12. http://dx.doi.org/10.21122/2227-1031-2019-18-2-104-112.

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The paper presents an analytical review of materials recycling for pavement dressing. Recycling or repeated usage of pavement dressing materials while making reconstruction and repair of road pavements is not considered as a new conception and it has been realized in various countries of the world since 20th century. Recycling (hot, cold) is based on methods of its execution, properties of pavement dressing materials which are subjected to processing and which influence on the quality of final material, technical and operational indices, specific economic efficiency. Investigations on the proc

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Yao, Chao, Yinchuan Guo, Aiqin Shen, Wangle Cui, and Ziming He. "Recycling of fine-asphalt-pavement solid waste for low-shrinkage rapid hardening Portland cement concrete pavement." Construction and Building Materials 289 (June 2021): 123132. http://dx.doi.org/10.1016/j.conbuildmat.2021.123132.

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Marques, Márcio Alexandre, Maria Lúcia Pereira Antunes, Marcos Minussi Bini, and Marcos Vinicius de Castro. "X-Ray Image Comparison of Wind Turbine Blade Waste and EPS Waste Used as Aggregates in Portland Cement Concrete." Materials Science Forum 881 (November 2016): 336–40. http://dx.doi.org/10.4028/www.scientific.net/msf.881.336.

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Transforming industrial wastes into construction materials through recycling is a feasible alternative that contributes to reduce the consumption of natural resources. Besides, modern civil construction seeks strong lightweight building materials. Due to their low density, wind turbine blade manufacturing waste and EPS post-consumer packaging can be used for this purpose. Such work uses X-ray imaging to evaluate the spatial distribution of these wastes in Portland cement concrete. Test specimens were produced containing wind turbine blade waste replacing part of the gravel content, and EPS was

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Rutkowska, Gabriela, Paweł Ogrodnik, Joanna Fronczyk, and Ayla Bilgin. "Temperature Influence on Ordinary Concrete Modified with Fly Ashes from Thermally Conversed Municipal Sewage Sludge Strength Parameters." Materials 13, no. 22 (2020): 5259. http://dx.doi.org/10.3390/ma13225259.

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Concrete is the most commonly used structural material, without which modern construction could not function. It is a material with a high potential to adapt to specific operating conditions. The use of this potential is made by its material modification. The aim of the performed investigations was the assessment of rational application possibilities of fly ashes from thermally conversed municipal sewage sludge as an alternative concrete admixture. A concrete mix was designed, based on the Portland cement CEM I 42.5R and containing various quantity of ash, amounting to 0–25% of cement mass. Th

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Abbas, Zena K., Hayder A. Mahdi, and Bassam A. Tayeh. "Producing Sustainable Concrete using Nano Recycled Glass." Open Civil Engineering Journal 15, no. 1 (2021): 236–43. http://dx.doi.org/10.2174/1874149502115010236.

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Background: Many tools and techniques have been recently adopted to develop construction materials that are less harmful and friendlier to the environment. New products can be achieved through the recycling of waste material. Thus, this study aims to use recycled glass bottles as sustainable materials. Objective: Our challenge is to use nano glass powder by the addition or replacement of the weight of the cement for producing concrete with enhanced strength. Methods: A nano recycled glass powder is prepared by crushing and storming a glass bottle to obtain a Blaine surface area of approximatel

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Meghwar, Shanker Lal, Ghous Bux Khaskheli, and Aneel Kumar. "Human Scalp Hair as Fiber Reinforcement in Cement Concrete." April 2020 39, no. 2 (2020): 443–52. http://dx.doi.org/10.22581/muet1982.2002.20.

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The construction industry is the largest manufacturing industry, which produces concrete and other related materials for construction of infrastructure around the world, after the food production industry. This industry requires a lot of natural resources like aggregates, limestone etc. to produce finished product such as concrete and cement. These natural resources are limited and have to deplete one day, so alternate to these resources are required. On the other hand, this industry produces a large amount of waste material that creates environmental pollution. Thus, recycling the waste as po

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Taha, Ramzi. "Evaluation of Cement Kiln Dust-Stabilized Reclaimed Asphalt Pavement Aggregate Systems in Road Bases." Transportation Research Record: Journal of the Transportation Research Board 1819, no. 1 (2003): 11–17. http://dx.doi.org/10.3141/1819b-02.

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Road rehabilitation and reconstruction generate large supplies of reclaimed asphalt pavement (RAP) aggregate, and recycling into asphalt paving mixtures is the predominant application. Cement kiln dust (CKD), also known as cement bypass dust, is a by-product material generated during production of portland cement. In Oman, where recycling of pavement materials is not practiced, a first attempt was made at combining two by-product materials for use in road construction. Conservation of natural resources and preservation of the environment are two benefits that could be gained by reusing waste m

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Mohammadhosseini, Hossein, Rayed Alyousef, and Mahmood Md. Tahir. "Towards Sustainable Concrete Composites through Waste Valorisation of Plastic Food Trays as Low-Cost Fibrous Materials." Sustainability 13, no. 4 (2021): 2073. http://dx.doi.org/10.3390/su13042073.

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Recycling of waste plastics is an essential phase towards cleaner production and circular economy. Plastics in different forms, which are non-biodegradable polymers, have become an indispensable ingredient of human life. The rapid growth of the world population has led to increased demand for commodity plastics such as food packaging. Therefore, to avert environment pollution with plastic wastes, sufficient management to recycle this waste is vital. In this study, experimental investigations and statistical analysis were conducted to assess the feasibility of polypropylene type of waste plasti

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Reif, Martina, Jiri Zach, and Vítězslav Novák. "Possibilities of Binding Recycled Glass in Production of Advanced Building Materials." Materials Science Forum 865 (August 2016): 255–60. http://dx.doi.org/10.4028/www.scientific.net/msf.865.255.

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The use of secondary raw material resources for construction purposes currently has a great potential. Secondary raw materials obtained by recycling waste glass find use (among others) in the production of thermal and acoustic insulation, production of lightweight concrete mixes and also in transportation engineering e.g. in road reconstruction.The paper deals with the possibilities of binding lightweight aggregate based on waste glass powder and with the production of advanced composite materials with good thermal insulation and acoustic properties. This means cement, epoxy resin and bitumino

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Evangelista, L., M. Guedes, A. C. Ferro, and J. de Brito. "Microstructure of concrete prepared with construction recycled aggregates." Microscopy and Microanalysis 19, S4 (2013): 147–48. http://dx.doi.org/10.1017/s1431927613001359.

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Conservation of natural resources, shortage of waste land and the high cost associated to treatment prior to disposal are driving growing interest in the recycling of construction and demolition waste materials (CDW). A challenging application for recycled CDW is the replacement of natural aggregates in the production of structural concrete. In the past few years several studies have examined the viability of this substitution. Although recycled aggregates are mostly heterogeneous, less dense and more porous than natural aggregates, satisfactory results have been attained by several authors re

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Nwaubani, Sunday O. "Waste Steel Slag and their Influence on the Properties of Cement Blends." MRS Advances 3, no. 34-35 (2018): 2027–40. http://dx.doi.org/10.1557/adv.2018.186.

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ABSTRACTThe use of waste is rapidly becoming a supra-disciplinary field in most parts of the world where the use of industrial wastes like fly ash, granulated steel slag, silica fume, and waste fibers in construction has become very popular since the last half of the 20th century. Other forms of industrial wastes are also re-used even for more sensitive applications on soils to upgrade soil texture. For example, waste from bauxite refining (red mud) is known to be extensively re-utilised. These concepts are yet to take tangible hold in Africa, despite the huge resources available. Electric-Arc

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Silva, Lucas Ramon Roque da, Josimara Aparecida da Silva, Matheus Brendon Francisco, et al. "Polymeric Waste from Recycling Refrigerators as an Aggregate for Self-Compacting Concrete." Sustainability 12, no. 20 (2020): 8731. http://dx.doi.org/10.3390/su12208731.

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The inadequate disposal of household appliances by consumers and industries have annually been generating enormous amounts of polymeric waste (PW). So, the interest in reuse of PW in civil construction has increased. The production of new cementitious materials, such as concrete with PW, proves to be a promising solution to inappropriate disposal of this waste. In this study, self-compacting concrete (SCC) was developed with partial replacement of the coarse aggregates by polymeric waste (PW) from the recycling of refrigerators. In the SCC reference mixture, Portland cement, silica fume, sand,

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Pokorný, Jaroslav, Radek Ševčík, and Jiří Šál. "The Design and Material Characterization of Reclaimed Asphalt Pavement Enriched Concrete for Construction Purposes." Materials 13, no. 21 (2020): 4986. http://dx.doi.org/10.3390/ma13214986.

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Reclaimed asphalt pavement (RAP) is a valuable commodity originating during processes of road/highways rehabilitations, resurfacing in the cases of the revelation of underneath-placed layers. Removed material can be successfully recycled and utilized as a supplementing material for new hot asphalt mixes. However, its dosages are limited because of variations in properties of aged bitumen compared to fresh material and, thus, a significant amount of waste material is remaining as waste products. Nonetheless, this commodity may find usage in the construction industry that suffers from a shortage

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Crispino, Maurizio, Emanuele Toraldo, Filippo Giustozzi, and Edoardo Mariani. "Recycled Concrete Mixes for Slip-Form Paving of Roads and Airports." Key Engineering Materials 711 (September 2016): 730–36. http://dx.doi.org/10.4028/www.scientific.net/kem.711.730.

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Slip-form paving is gaining consensus in road and airport construction due to high production rates and automation of the process. Concrete slabs are extruded by pulling the forms continuously through and surrounding the plastic concrete mass. The technology uses low-slump cement concrete mixes so that the fresh mass is able to hold its shape once the slip-form paver has passed; besides low-slump, several other parameters should be considered for a proper slip-form concrete mix, especially at the fresh state. To date, recycling is being commonly adopted in concrete mixes to address sustainabil

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Tasneem, Kazi Mahmuda, Jongwan Eun, and BooHyun Nam. "Leaching behaviour of municipal solid waste incineration bottom ash mixed with Hot-Mix Asphalt and Portland cement concrete used as road construction materials." Road Materials and Pavement Design 18, no. 3 (2016): 687–712. http://dx.doi.org/10.1080/14680629.2016.1186108.

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Pyataev, E. R., and A. Y. Ushakov. "Modeling the composition of fine-grained modified concrete elaborated with vibropressing technology." MATEC Web of Conferences 298 (2019): 00133. http://dx.doi.org/10.1051/matecconf/201929800133.

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The article analyzes the property requirements of small-piece products used in road construction, specially those related to water and frost resistance. It describes the main features of the vibration technologies involved in the manufacture of building materials, in particular, paving slabs. The article presents conclusive results, obtained through scientific research, which allow us to establish the influence of both, the costs of the main components and the parameters of vibration compression, on the properties of the final product. Combining the analysis of classical methods with the resul

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Tarmizi, Tarmizi, Sofyan M. Saleh, and Muhammad Isya. "PENGARUH SUBSTITUSI SEMEN PORTLAND DAN FLY ASH Batubara PADA FILLER ABU BATU terhadap aspHalT CONCRETE-BINDER COURSE (AC-BC)." Jurnal Teknik Sipil 1, no. 3 (2018): 749–60. http://dx.doi.org/10.24815/jts.v1i3.10036.

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Abstract: All this time, the construction of roads in Banda Aceh and surrounding areas uses materials from the river, so the C quarry mining causes the basic changes in the river channel and also the erosion of the bridge pillars on the river route. In addition to the above problems, another problem is the lack of stone ash production from Stone Crusser. From these problems then there should be another alternative to be a material path and also for the filler. Material that can be used for road material is basalt rock which is raw material from mountain, while filler can be used Fly Ash Batuna

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Chuc, Nguyen Trong, Tang Van Lam, and Boris I. Bulgakov. "Designing the Composition of Concrete with Mineral Additives and Assessment of the Possibility of Cracking in Cement-Concrete Pavement." Materials Science Forum 931 (September 2018): 667–73. http://dx.doi.org/10.4028/www.scientific.net/msf.931.667.

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Cement-concrete pavement not only has a long service life even at high loads but also has competitive production costs and fewer significant maintenance costs. The concrete road surfaces, thus, are rather economical. In this article, the Vietnamese Standard TCVN 9382 - 2012 was used to determine the heavyweight concrete composition for rural road construction. Assessment of the crack appearance in the concrete block body was made by the temperature field analysis, the thermal stress and cracking index. The conducted studies' result provided with the possibility of obtaining heavyweight concret

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Wang, Jei-Pil, and Urtnasan Erdenebold. "A Study on Reduction of Copper Smelting Slag by Carbon for Recycling into Metal Values and Cement Raw Material." Sustainability 12, no. 4 (2020): 1421. http://dx.doi.org/10.3390/su12041421.

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Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 1.5 million tons of copper slag are generated annually in Korea. The oxides in copper smelting slag include ferrous (FeO), ferric oxide (Fe2O3), silica (SiO2 from flux), alumina (AI2O3), calcia (CaO) and magnesia (MgO). The main oxides in copper slag, which are iron oxide and silica, exist in the form of fayalite (2FeO·SiO2). Since copper smelting slag contains high content of iron, and copper and zinc, common applications of copper smelting slag can be used in value-added pro

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Myhre, Marvin, and Duncan A. MacKillop. "Rubber Recycling." Rubber Chemistry and Technology 75, no. 3 (2002): 429–74. http://dx.doi.org/10.5254/1.3547678.

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Abstract For both environmental and economic reasons, there is a continuing broad based interest in recycling of scrap rubber and development of recycling technologies. The use of post- industrial scrap is established as a systematic business. However, the disposal and reuse of scrap tires remains a serious environmental concern and a business opportunity. The method for reclaiming rubber utilizing aqueous alkaline solutions has been abandoned in North America because of environmental pollution hazards. The focus of more recent research is to apply processes that do not generate disposal hazar

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Rutkowska, Gabriela, Krzysztof Wiśniewski, Marek Chalecki, Mirosława Górecka, and Kamil Miłosek. "Influence of fly-ashes on properties of ordinary concretes." Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation 48, no. 1 (2016): 79–94. http://dx.doi.org/10.1515/sggw-2016-0007.

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Abstract Influence of fly-ashes on properties of ordinary concretes. Care of the environment in accordance with the principles of sustainable development introduces the possibility and need for waste recycling. The construction and building materials industry has the greatest potential for reuse of waste. The article presents the results of investigations of selected properties (consistency, water absorbability, compressive strength and tensile strength after 28 and 56 days of curing, depth of penetration) of ordinary concretes and concretes containing fly-ashes - calcareous and siliceous ash

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Romanenko, Igor, Alexey Fadin, Irina Petrovnina, and Maria Romanenko. "Formation of an optimal cement matrix for vibropress products." MATEC Web of Conferences 329 (2020): 04003. http://dx.doi.org/10.1051/matecconf/202032904003.

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Modern approaches to the formation of new generation concretes make it possible to replace part of the fine aggregate with finely ground mineral powders, which are by-products of metallurgical and chemical industries, the construction industry, as well as various substandard quartz sands. In the studies carried out, metallurgical slags (MS), broken glass (BG), dust from gas cleaning of metallurgical production (DGCMP), and ground quartz sand (GQS) were used. The aim of the study is to obtain an optimal flow rate of a hydraulic binder by forming an optimal cement matrix. The dosage of finely gr

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Park, Jin-Young, Byung-Soo Kim, and Dong-Eun Lee. "Environmental and Cost Impact Assessment of Pavement Materials Using IBEES Method." Sustainability 13, no. 4 (2021): 1836. http://dx.doi.org/10.3390/su13041836.

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For road pavements, hot-mix asphalt (HMA) and Portland cement concrete (PCC) are the materials most commonly used. In the selection of one of these materials, their economic performance and environmental performance are evaluated to determine which material exhibits excellent overall performance. However, no overall performance assessment exists in the construction community attributed to the lack of method providing easy-to-use and informative criteria for the decision-making process. Thus, in this paper, a new method that enables a comprehensive overall performance assessment is proposed, wh

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Sánchez-Cotte, Edgar H., Carlos Albeiro Pacheco-Bustos, Ana Fonseca, et al. "The Chemical-Mineralogical Characterization of Recycled Concrete Aggregates from Different Sources and Their Potential Reactions in Asphalt Mixtures." Materials 13, no. 24 (2020): 5592. http://dx.doi.org/10.3390/ma13245592.

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The incorporation of a recycled concrete aggregate (RCA) as a replacement of natural aggregates (NA) in road construction has been the subject of recent research. This tendency promotes sustainability, but its use depends mainly on the final product’s properties, such as chemical stability. This study evaluates the physical and chemical properties of RCAs from two different sources in comparison with the performance of NA. One RCA was obtained from the demolition of a building (recycled concrete aggregate of a building—RCAB) and another RCA from the rehabilitation of a Portland cement concrete

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H. Al-Humeidawi, Basim. "Utilization of Waste Plastic and Recycle Concrete Aggregate in Production of Hot Mix Asphalt." Al-Qadisiyah Journal for Engineering Sciences 7, no. 4 (2017): 322–30. http://dx.doi.org/10.30772/qjes.v7i4.365.

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Recycling of waste material is a recent technique aims to change the waste material into new products to reduce the pollution and detrimental effect on the environment and reduce the demand of new fresh natural sources. Plastic bags and Recycled Concrete Aggregate (RCA) are samples of these waste materials can be re-used in road construction. Over one million bags are used every minute worldwide, whereas, aggregate is consist of about 95% of asphalt mixture and can be obtained as RCA from demolished infrastructure. This paper presents laboratory tests results of using waste plastic and RCA in

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Rikmann, Ergo, Ivar Zekker, Tõnis Teppand, et al. "Relationship between Phase Composition and Mechanical Properties of Peat Soils Stabilized Using Oil Shale Ash and Pozzolanic Additive." Water 13, no. 7 (2021): 942. http://dx.doi.org/10.3390/w13070942.

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Construction of road embankments in peatlands commonly involves replacement of the peat with a fill-up soil of an adequate load-bearing capacity. This usually requires a lowering of the water level, turning a peatland from a carbon sink to a source of greenhouse gases. Thus, alternatives are sought that are less costly in both economic and ecological terms. Mass-stabilization technology can provide a cheap substitute for Portland cement. Calcareous ashes (waste materials), supplemented with pozzolanic and alkali additives to facilitate and accelerate the setting and hardening processes, are at

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Dhir, R. K. "Book ReviewsFly ash in cement and concrete Helmuth Richard Portland Cement Association, 5420 Old Orchard Road, Skokie, Illinois 60077, USA, 1987. 228 × 148 mm. pp. iv, 203. Typeset, illustrated, paperback. ISBN 0 89312 085 5. Price$45.00." Magazine of Concrete Research 40, no. 143 (1988): 118–19. http://dx.doi.org/10.1680/macr.1988.40.143.118.

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Kapustin, Fedor, Vladislav Ufimtsev, Andrey Vishnevsky, Irina Fomina, Alexey Kapustin, and Kirill Zemlyanoy. "The Use of Reftinskaya State District Power Plant Fly Ash in the Production of Building Materials and Products." KnE Materials Science, December 31, 2020. http://dx.doi.org/10.18502/kms.v6i1.8058.

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The system of dry ash–slag removal at the Reftinskaya state district power plant which provides capture, storage and shipment of fly ash to the consumers is considered in this study. The results of determination of chemical and phase composition, physical properties, melting temperature and activity of natural radionuclides of ash which is form during burning of stone coal of Ekibastuz basin are presented. Ash is acidic, superfine and refractory one with a low content of combustible substance. As to composition and properties it satisfies the requirements of Russian Standard no. 25818 and ship

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