Utilization of reclaimed asphalt pavement aggregates containing waste from sugarcane mill for production of concrete mixes.
TL;DR: In this paper, the authors investigated the potential of waste originating from road sector (RAP) and agricultural industry (Sugarcane Bagasse Ash) for production of concrete mixes.
About: This article is published in Journal of Cleaner Production.The article was published on 2018-02-10. It has received 72 citations till now. The article focuses on the topics: Properties of concrete.
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TL;DR: In this paper, a life cycle assessment to compare an RCA-based portland cement concrete (RCA-PCC) pavement and a plain PCC pavement (i.e., without RCA) from all three aspects of sustainability (e.g., economic impact, social impact, and environmental impact) was carried out using an economic input-output life cycle assess (EIO-LCA) approach.
97 citations
TL;DR: In this article, the authors present a life cycle inventory analysis of reclaimed asphalt pavement (RAP) in portland cement concrete (PCC) as an aggregate replacement for pavement applications.
90 citations
TL;DR: The objective of this review article is to provide future researchers with the latest research findings, limitations and improvements in this subject and to prove that most solid waste materials have both environmental and economic benefits when applied in field.
85 citations
TL;DR: In this paper, the authors investigated the optimum fraction of RAP (coarse, fine & total) along with its optimum proportion (50% & 100%) for Roller Compacted Concrete Pavement (RCCP) mixes, based upon various fresh, mechanical and durability properties.
68 citations
TL;DR: In this paper, the potential of RCCP mixes containing 50% RAP via including various industrial and agricultural wastes such as Silica Fume, Fly ash, and Sugarcane ash as partial replacement of conventional cement.
Abstract: Asphalt pavement recycling has become a common practice across the globe and has been successfully employed in construction of new pavements. While several studies considered utilization of reclaimed asphalt pavement (RAP) aggregates for flexible and rigid pavements, very few attempted its possibility for roller compacted concrete pavements (RCCP). Additionally, studies on the possibility of enhancing the proportion of RAP for RCCP are very scanty. The present study is an attempt to increase the potential of RCCP mixes containing 50% RAP (dust contaminated & stiffened asphalt coated: 50RAP via including various industrial and agricultural wastes such as Silica Fume, Fly ash, and Sugarcane ash as partial replacement of conventional cement. It was observed that the inclusion of the stated admixtures had an insignificant effect on the density of the fresh RCCP mixes, however, increased the moisture demand considerably. In fact, the results firmly indicated the potential of silica fume for RAP-RCCP blends, as, it not only enhanced the physical and mechanical properties, but found to improve the durability of RCCP mixes considerably. Also, utilization of silica fume was found to be economical & environmentally friendly amongst all wastes: with reduced initial construction cost & CO2 emissions by up to 8.4% & 9.7%. As far as the other industrial wastes are concerned, 15% fly ash could also be utilized for producing sustainable RCCP mixes, whereas, higher dosage of fly ash (30%) and sugarcane ash (10 & 15%) may be employed as base layer material of conventional concrete pavements.
60 citations
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TL;DR: In this paper, the effects of bagasse ash (BA) content as partial replacement of cement on physical and mechanical properties of hardened concrete are reported, including compressive strength, splitting tensile strength, water absorption, permeability characteristics, chloride diffusion and resistance to chloride ion penetration.
Abstract: The utilization of waste materials in concrete manufacture provides a satisfactory solution to some of the environmental concerns and problems associated with waste management. Agro wastes such as rice husk ash, wheat straw ash, hazel nutshell and sugarcane bagasse ash are used as pozzolanic materials for the development of blended cements. Few studies have been reported on the use of bagasse ash (BA) as partial cement replacement material in respect of cement mortars. In this study, the effects of BA content as partial replacement of cement on physical and mechanical properties of hardened concrete are reported. The properties of concrete investigated include compressive strength, splitting tensile strength, water absorption, permeability characteristics, chloride diffusion and resistance to chloride ion penetration. The test results indicate that BA is an effective mineral admixture, with 20% as optimal replacement ratio of cement.
563 citations
TL;DR: In this article, the role of mill type and grinding circuit configuration in grinding in laboratory- and pilot plant-scale on the particle size, specific surface area and pozzolanic activity of the produced ashes was investigated.
311 citations
TL;DR: In this article, the blending process of reclaimed asphalt pavement (RAP) with virgin mixture was analyzed through controlled experiments, where one type of screened RAP was blended with virgin (new) coarse aggregate at different percentages.
Abstract: This paper presents a laboratory study in which the blending process of reclaimed asphalt pavement (RAP) with virgin mixture was analyzed through controlled experiments. One type of screened RAP was blended with virgin (new) coarse aggregate at different percentages. A blended mixture containing 20% of screened RAP was subjected to staged extraction and recovery. The result from this experiment indicated that only a small portion of aged asphalt in RAP actually participated in the remixing process; other portions formed a stiff coating around RAP aggregates, and RAP functionally acted as "composite black rock." The resulting composite layered structure was desirable to improve the performance of the hot-mix asphalt mixture.
294 citations
TL;DR: In this paper, the results of the processing of sugar cane bagasse ash (SCBA) under controlled calcination conditions in order to obtain materials with optimum pozzolanic activity were presented.
252 citations
TL;DR: A review of current literature on extensive studies that have been undertaken in an attempt to explore plausible applications and potentials of sugarcane bagasse (SCB) for composite material is presented in this article.
Abstract: The natural, bio-degradable features and chemical constituents of the sugarcane bagasse (SCB) have been attracting attention as a highly potential and versatile ingredient in composite materials. Eco-friendly and low cost considerations have set the momentum for material science researchers to identify green materials that give low pollutant indexes. Various components of SCB is shown to possess the ability of being applied as raw material for manufacturing of composite materials at multiple levels of properties and performances. Studies on the impacts, performances and applications of SCB in its original condition; transformed forms; treated with appropriate chemicals and/or processes; in combination with materials of distinct properties and manipulation of manufacturing methodologies have been duly considered. This paper attempts to summarize a review of current literature on the extensive studies that have been undertaken in an attempt to explore plausible applications and potentials of SCB for composite material.
237 citations