ASCE India Conference 2017
Efficient Utilization of Construction and Demolition Waste in Concrete
Publication: Urbanization Challenges in Emerging Economies: Resilience and Sustainability of Infrastructure
ABSTRACT
In India, appliance of construction and demolition (C&D) waste is bound to non-structural concrete, pavements, and backfilling. Research paper highlights the backdrop of construction and demolition waste concrete wherein coarse recycled aggregates (CRA) accept been activated thoroughly. CRA is acclimated as 50%, 70%, and 90% backup of accustomed normal coarse aggregates (NCA). Various mixes were able for accustomed out beginning plan with altered water-cement (W/C) ratios. All mixes were advised for characteristic strength of M20 mix grade. Three altered types namely beginning fresh concrete material (FCM), waste concrete material (WCM), and waste concrete material with admixture (WCA) are advised for assay work. Masterpolyhhed-8311 mid ambit baptize abbreviation admixture is acclimated to advance achievement of WCM. Microstructural abstraction is agitated out by scanning electron microscope (SEM) of crumb samples extracted from concrete cubes. Qualitative and quantitative assay is agitated out by x-ray diffraction and allotment agreement of ratios of oxides of calcium and silica (C/S) is formed out. Compressive strength, and C-S-H gel formation of FCM, WCM, and waste concrete material with admixture (WCA) is studied through scanning electron microscope (SEM). It is empiric that there is advance in compressive strength and achievement of waste concrete material with admixture (WCA). Present work justifies that construction and demolition waste material (recycled coarse aggregates) can be efficiently utilized to achieve comparable compressive strength and durability relative to concrete using natural coarse aggregates (NCA).
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ACKNOWLEDGEMENT
Authors acquiescently accede the support provided by Thakre Consultancy Services Pvt.Limited, Raipur, Chhattisgarh for administering experimentation work. Technical abutment provided by Dr. Govardhan Bhatt, Mr. Pataskar (Chemical Supplier) and Dr.Prasanna Kumar was aswell axiological for the development of research.
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Information & Authors
Information
Published In
Urbanization Challenges in Emerging Economies: Resilience and Sustainability of Infrastructure
Pages: 216 - 226
Editors: Udai P. Singh and G. L. Sivakumar Babu, Indian Institute of Science
ISBN (Online): 978-0-7844-8203-2
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Dec 13, 2018
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