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"The civil engineering sector accounts for a significant percentage of global material and energy consumption and is a major contributor of waste material. The ability to recycle and reuse concrete and demolition waste is critical to reducing environmental impacts in meeting national, regional and global environmental targets. Handbook of recycled concrete and demolition waste summarises key recent research in achieving these goals.Part one considers techniques for managing construction and demolition waste, including waste management plans, ways of estimating levels of waste, the types and optimal location of waste recycling plants and the economics of managing construction and demolition waste. Part two reviews key steps in handling construction and demolition waste. It begins with a comparison between conventional demolition and construction techniques before going on to discuss the preparation, refinement and quality control of concrete aggregates produced from waste. It concludes by assessing the mechanical properties, strength and durability of concrete made using recycled aggregates. Part three includes examples of the use of recycled aggregates in applications such as roads, pavements, high-performance concrete and alkali-activated or geopolymer cements. Finally, the book discusses environmental and safety issues such as the removal of gypsum, asbestos and alkali-silica reaction (ASR) concrete, as well as life-cycle analysis of concrete with recycled aggregates."

"Full fledged use of construction & demolition (C&D) waste in the construction industry is inevitable. Concrete technologists across the world are engaged to scale its properties and potential uses since last 65 years. The general consensus for the mechanical property is to some extent is acceptable however the workability and durability properties are still under a scanner and needs to be improved. The present paper reports the optimistic results of series of experimental work carried out using high range replacement of normal aggregates (NA) with recycled aggregates (RA) (50-80%) from C&D waste for producing sustainable and durable concrete (water cement ratio 0.4) using C&D waste. Multiple strategies were used in research to enhance workability and durability properties of concrete produced by using C&D waste. Firstly the RA was used as an internal curing (IC) agent to enhance the micro structure and Interfacial Transition Zone (ITZ) of concrete. Secondly by apparently lowering the water cement ratio by using additional low-lime fly ash similar to class F of ASTM C 618 mainly to improve workability, packing of concrete, later age strength and durability. The results show that water diffusion in concrete with RA being used as an IC agent was delayed leading to decrease in shrinkage and micro cracks development; also increase the hydration, compressive strength and improvement of durability indexes such carbonation depth and electrical resistivity is seen. The Scanning Electron Microscope (SEM) result illustrated the considerable improvement in the microstructure. By adopting these strategies which are economical & sustainable, mixtures show additional benefits that should permit their broader application."

"This book focuses on the utilisation of construction waste material as coarse aggregate in making concrete. It discusses in detail the behaviour of recycled aggregate under impact load along with other structural applications, and explains the various quality-improvement techniques for recycled aggregate and recycled aggregate concrete (RAC). The first chapter describes the importance of recycling construction and demolition waste and the status quo of global construction and demolition waste recycling. The second chapter examines the recycled aggregate production methodology. Subsequent chapters address the physical and mechanical characteristics and different research findings, as well as the engineering properties of recycled aggregate concrete. Further, the interrelationships among the mechanical properties of recycled aggregate concrete are discussed. The book also explores long-term properties like shrinkage and creep, durability properties, and microstructural characterisation. It will serve as a valuable resource for researchers and professionals alike."

"Di Indonesia, umumnya, limbah konstruksi tidak dimanfaatkan dengan baik. Untuk mencegah siklus kerusakan alam tersebut, diperlukan suatu inovasi. Inovasi yang dapat menjadi solusi dari limbah-limbah konstruksi yang terus bertambah dan untuk mengurangi dampak-dampak yang tidak diinginkan pada lingkungan. Selain itu, Hal ini dapat menjadi alternatif penggunaan agregat alami untuk perkerasan jalan yang terus menipis. Penelitian ini merencanakan penggunaan limbah beton sebagai pengganti agregat kasar pada campuran lapis aus (AC-WC) sebagai salah satu perwujudan inovasi terhadap solusi dari permasalahan limbah konstruksi yang ada di Indonesia. Pengujian skid resistance dilakukan kepada campuran lapis aus (AC-WC) modifikasi sebagai parameter pengaruh dan kelayakan penggunaan campuran pada dunia nyata. Penelitian ini merencanakan campuran lapis aus (AC-WC) modifikasi dengan komposisi agregat kasar (batu split), agregat menengah (screening), agregat halus (abu batu) dan RCA. Kadar aspal optimum terbaik, Nilai skid resistance serta pengaruh limbah beton sebagai pengganti agregat kasar akan dibandingkan dengan sampel kontrol yaitu campuran lapis aus (AC-WC) dengan komposisi agregat kasar (batu split), agregat menengah (screening) dan agregat halus (abu batu). Pengujian skid resistance menggunakan alat British Pendulum Tester terhadap campuran lapis aus (AC-WC) modifikasi dan non modifikasi dengan KAO nya yaitu 9% dan 98. Berubahnya komposisi campuran lapis aus (AC-WC) mempengaruhi nilai skid resistance menjadi lebih tinggi.

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In Indonesia, usually, construction waste is not put to good use. To prevent this cycle of destruction of nature, an innovation is needed. Innovations that can be a solution to the growing construction waste problems and to reduce the unwanted impacts on the environment. thus, it can be an alternative to the use of natural aggregates for road pavements that continue to thin out. This study plans the use of concrete waste as a substitute for coarse aggregates in wear-coated mixtures (AC-WC) as one of the manifestations of innovation to the solution to the problem of construction waste in Indonesia. Skid resistance testing is performed on modified wear-coated mixtures (AC-WC) as parameters of the influence and feasibility of using the mixture on the field.

This study planned a modified wear-coated mixture (AC-WC) with the composition of split stones as the coarse aggregates, screening as the intermediate aggregates, stone ash as fine aggregates and reclaimed concrete aggregates as the substitution of the coarse aggregates. The best optimum asphalt content, skid resistance value and the influence of concrete waste as a substitute for coarse aggregate will be compared with control samples, wear-coated mixtures (AC-WC) with a composition of coarse aggregate (split stone), medium aggregate (screening) and fine aggregate (stone ash). Skid resistance testing using the British Pendulum Tester tool against modified and non-modified wear-coated mixtures (AC-WC) with its KAO, namely 9% and 8%. Changes in the composition of the wear-coated mixture (AC-WC) affect the value of skid resistance to be higher."

"This volume contains selected papers presented during the International Conference on Environmental Geotechnology, Recycled Waste Material and Sustainable Engineering (EGRWSE-2018). The papers focus on finding innovative ways of recycling and reusing waste materials, reducing demand for natural resources and processing industrial and chemical wastes such that disposal reduces their environmental burden. This volume will be of interest to researchers, policy makers and practitioners working in the field of waste management. "