Using computer vision to recognize construction material: A …
A large amount of construction and demolition waste (over 10 billion tons) is known to be generated every year globally. As the largest contributor, China generates more than two billion tons annually (Zheng et al., 2017), which has a serious impact on the environment (e.g., greenhouse gas emissions, resource consumption, and raw material consumption) (Ding, Yi, …
Methods for estimating construction and demolition (C&D) waste
This chapter introduces two main issues: waste classification considered as types and amounts. The section dealing with the composition of C&D waste differentiates between two types: waste generated during construction and waste originating from demolition. It also emphasises the hazardous waste that may be generated.
Waste generation, composition, and handling in building …
By using construction waste separability quality evaluation indexes, the identification accuracy of construction waste in the two study areas was determined to be 96.6% and 96.2%, the separability ...
Classification of construction and demolition waste
There are different classification criteria for construction and demolition waste, but one of the most commonly used is the one based on its composition and characteristics. According to this criterion, construction and demolition waste is classified into different categories:
A Comprehensive Review on Construction and Demolition Waste …
Construction and demolition waste (CDW) is one of the largest contributors to global waste streams, simultaneously posing significant environmental and resource management challenges. The management of CDW, particularly its potential for energy recovery and industrial symbiosis, has garnered increasing attention as part of a circular economy approach. This …
Quantitative and Qualitative Estimation of Construction …
Quantity of Construction Waste: Quantity and A survey carried out by shows that the quantity of composition of construction waste keep on changing due to dynamic nature of construction activities [15] and hence cannot be exactly measured with varying construction methods and practices and specificity and phases of the project [6].
Construction & Demolition Waste Composition Study
Provide data on the composition of C&D waste in Minnesota, noting any differences between Greater Minnesota and the Metro regions. • Investigate C&D material generation and …
Classification and Quantification of Construction …
International Journal of Zero Waste Generation Vol.1, , 2013; ISSN 2289 4497 Published by ZW Publisher 1 Classification and Quantification of Construction
(PDF) Categorization of Construction Waste
In this paper, construction waste is categorized in main two types: value added waste, non-value added waste. This categorization includes bothmaterial waste as well as time waste...
Construction and Demolition Waste Landfills
Information on the composition of C&D waste is presented below. Most of this information was compiled from the literature by the National Association of Demolition Contractors (NADC); a …
Construction and Demolition Wastes
The materials that make up construction and demolition waste can be divided up into many different classifications based on composition, physical properties, and original use.
Estimating construction and demolition waste in the …
The material composition of construction waste changes significantly with changes in the constructed building type. In 2000, building construction waste was dominated by inorganic non-metallic materials, which accounted for 95.9% of the total construction waste, with sand and gravel representing the most abundant components, comprising 39.54% ...
(PDF) Effective waste management in construction: …
Keywords: Construction Waste Management, Sustainable Construction, Waste Reduction Techniques, Building Information Modeling (BIM), Recycling and Reuse. Discover the world's research 25+ million ...
Technical Guidelines No 5 Waste Classification
existing waste classification and composition which is composed of seven categories; Chapter 5 discusses the sources and type of solid waste; Chapter 6 ... 5.2 Construction and Demolition Waste Construction and demolition waste are wastes derived from the construction, remodeling, and repairing of individual residences, ...
Estimation of construction waste composition based on …
Accurate quantification and detailed classification of construction waste are paramount to improving their management. Over the last decades, various quantification models have been developed to ...
Classification and quantification of excavated soil and construction …
With rapid urbanization in China, a large amount of excavated soil and construction sludge is being generated from geotechnical and underground engineering. For sustainable management of these construction wastes, it is essential to quantify their production first. The present study has attempted to classify the excavated soil and construction sludge …
CHAPTER 2 WASTE GENERATION, COMPOSITION AND …
installations, water works and sewage facilities, construction and demolition sites, and agricultural activities ... In the Section 2.3 Waste Composition, default compositions are given for these default waste categories. ... 2 Some countries do not use these broad waste categories but a more detailed classification, e.g., the Regulation of the ...
Deep convolutional neural networks for construction and …
The sorting of Construction and Demolition (C&D) waste is a critical step to linking the recycling system and to the macro prediction, which helps to promote the development of the circular economy. Moreover, the effective classification and automated separation process will also help to stop th …
Computer vision to recognize construction waste …
Recognition of construction waste compositions using computer vision (CV) is increasingly explored to enable its subsequent management, e.g., determining chargeable levy at disposal facilities or ...
A cost-effective recycled aggregates classification …
Construction and demolition (C&D) waste is the most significant waste stream across the EU, accounting for over 800 million tonnes per year [1].The UK alone produced 66.2 million tonnes of non-hazardous C&D waste in 2016, which accounted for around 30% of total waste produced in the country [2].As such, the EU's Waste Framework Directive set the target …
Construction and Demolition Debris: Material-Specific Data
This page describes the generation, recycling, combustion with energy recovery, and landfilling of Construction and Demolition (C&D) materials, and explains how EPA classifies such material.
Computer vision to recognize construction waste compositions: A …
Xiao et al. (2020) used an extreme learning machine (ELM) to integrate deep features extracted by CNN for the classification of typical construction waste. Chen et al. (2021b) developed a hybrid model to automate the gauging of construction waste composition. The aforementioned research tends to focus on image classification, which can only ...
Semi-supervised segmentation for construction and demolition waste
Implementing waste sorting and recycling has been effective but challenging due to the extensive labor needed for waste classification, given the wide range of waste types and their diverse forms (Zhang et al., 2021).The materials found in CDW are frequently mixed in a heterogeneous manner, which presents a significant challenge for waste segregation (Islam et …
Current and Emerging Construction Waste Management Status, Trends …
The construction sector is the highest producer of waste if compared with other economic activities worldwide, accounting for 35% of the total waste generation in the European Union (EU) [7], which equates to four times more than the total waste produced, and 30%–40% in China reaching one billion tons of CDW in 2013 [7], [8].It is estimated that the …
Machine-learning-assisted classification of construction …
The classification of construction waste material using a deep convolutional neural network, Automation in Construction 122 (2021),. Crossref. Google Scholar [8] de Sousa Filho F.N.M., Pereira de ... Lux J., Mahieux P.-Y., Turcry P., Aït-Mokhtar A., Determination of the composition of recycled aggregates using a deep learning-based image ...
Waste generation, composition, and handling in building …
Identification of waste composition by analyzing digital images has been performed in waste-derived fuels (Peddireddy et al., 2015), ... 2016 of Minister of Construction regulating classification of construction works and instructions on application to construction management. Vietnam. (2019)
Waste – types and classification – Solid and …
Waste – types and classification 2. Waste sources and generation rates 3. Factors influencing waste generation, environmental and health hazards 4. Traditional methods of waste collection and disposal 5. Composition of solid …
Fish Waste Composition and Classification | SpringerLink
A tremendous quantity of fish waste is generated as the fish processing industry expands, accounting for up to processed fish (70%) and total fish mass (¾) (Rustad et al. 2011).Fish by-products decompose quickly unless properly processed or placed in suitable circumstances due to heavier bacterial load and endogenic enzyme content, which can create …
Recycled Aggregates from Construction Demolition Wastes -Types
Table-2: Classification of Recycled Aggregates from Construction demolition waste as per Ministry of Construction Japan (As per Kawana, 2000) Classification based on Origin This type of classification was put forward by Rilem (1994) for aggregates that are recycled from the major material in construction as,
Construction and Demolition Waste Management Research: …
Construction and demolition waste treatment has become an increasingly pressing economic, social, and environmental concern across the world. ... and the composition of waste have been among the hot research topics in Vietnam, Ireland, Denmark, Singapore, and Serbia . 3.1.6. Co-Citations of References . Co-citation analysis is the inverse ...