scholarly journals Research on Contractual Relationship Optimization of Urban Construction Waste Disposal PPP Project

2019 ◽  
Vol 233 ◽  
pp. 052020
Author(s):  
Qiu Yue
Keyword(s):  
Waste Disposal ◽  
Construction Waste ◽  
Contractual Relationship ◽  
Urban Construction

Construction waste disposal practices: the recycling and recovery of waste

2014 ◽  
Author(s):  
A. Puskás ◽  
O. Corbu ◽  
H. Szilágyi ◽  
L. M. Moga
Keyword(s):  
Waste Disposal ◽  
Construction Waste

RECYCLED BRICK SOUNDPROOF TEST AS AN ALTERNATIVE SUSTAINABLE MATERIAL

2020 ◽  
Vol 13 (2) ◽  
pp. 44-54
Author(s):  
Hendrico Firzandy Latupeirissa ◽  
Gierlang Bhakti Putra ◽  
Niki Prastomo
Keyword(s):  
Waste Disposal ◽  
Sound Source ◽  
Building Material ◽  
Building Materials ◽  
Negative Impact ◽  
The Other ◽  
Human Comfort ◽  
Construction Waste ◽  
Coarse Grains ◽  
Made In

Brick debris that makes up the majority of construction waste has not received proper waste disposal in Indonesia. On the other hand, brick debris could be potentially reused as non-structural building materials to reduce its negative impact on the environment. This study aims to test the effectiveness of soundproofing on recycled brick debris. The soundproof test was carried out on brick debris in the form of fine and coarse grains. The simulation box is then used as a support for the brickwork material and then the box is exposed to a sound source with a certain level of noise that is considered disturbing human comfort. Noise level measurements are made in the outside and inside the box. These measurements are tabulated and then analyzed to see the success of the two aggregates in reducing noise. Basically, the brickwork material has succeeded in becoming a recycled building material that can absorb noise, although further research must be carried out to be able to state that this material is truly ready to be used as an alternative building material with good acoustic capabilities.

Study on Performance of Paste Filling with Urban Construction Waste

2014 ◽  
Vol 528 ◽  
pp. 127-131
Author(s):  
Yin Liu ◽  
Hao Qiang Zhang ◽  
Qi Feng Wang ◽  
Hai Yun Zhang
Keyword(s):  
Compressive Strength ◽  
Concrete Structures ◽  
Physical Property ◽  
System Engineering ◽  
Source Material ◽  
Construction Waste ◽  
Urban Construction ◽  
Better Than

Aiming at the problem of only source material in paste filling and garbage-surrounded city, a system engineering including them was proposed. The construction waste crushing process of filling was optimized based on the gangue process. Compared with gangue, the physical property of three kinds of construction waste ranged widely. Also the paste of all could reach the goal of filling, which the collapsed slump ranged from 18cm to 23cm and the highest compressive strength of 8h and 28d reached 0.17MPa and 3.82MPa. However, the properties of concrete structures of construction waste were better than that of brick-mixed structures.

scholarly journals Reduction of Ecological and Economic Risks in Utilization of Solid Domestic Wastes and Construction Waste

2018 ◽  
Vol 251 ◽  
pp. 06017 ◽  
Author(s):  
Victoria Polyakova ◽  
Evgeniy Degaev ◽  
Pierre El Haddad
Keyword(s):  
Waste Disposal ◽  
Large Volume ◽  
Sharp Increase ◽  
Waste Utilization ◽  
Construction Waste ◽  
Life Threat ◽  
Economic Risks

In their activities, humans produce a large amount of wastes. A sharp increase in consumption resulted in a large volume of solid domestic wastes, which must be combated. All this poses a certain life threat to mankind. However, there is no totally waste-free production. That is why the most effective way of waste disposal should be chosen. That is why it is necessary to choose the most effective way of waste utilization with minimization of environmental and economic risks.

Composition of demolition wastes from Chi-Chi earthquake-damaged structures and the properties of their inert materials

2009 ◽  
Vol 46 (4) ◽  
pp. 470-481 ◽  
Author(s):  
Chau-Ping Yang
Keyword(s):  
Coarse Aggregate ◽  
The Other ◽  
Inert Material ◽  
Storage Site ◽  
Demolition Waste ◽  
Natural Soils ◽  
Construction Waste ◽  
Waste Storage ◽  
Urban Construction ◽  
Volumetric Content

The disastrous Chi-Chi earthquake struck Taiwan on 21 September 1999 and resulted in the creation of more than 20 million cubic metres of demolition waste, which was stored temporarily at several sites. To reduce the site clearing costs, the inert materials (concrete, brick, pottery, and fines) in the wastes should be reclaimed and recycled immediately; but most of their properties were not known. Therefore, this study investigates the properties of demolition wastes, including inert materials, coarse portions, and fines obtained from two earthquake demolition waste storage sites (Puli and Tali) and one normal urban construction waste storage site (Taichung). It is found that the volumetric content of inert materials from earthquake demolition waste is about 96%. Such inert material is classified as having an excellent subgrade rating and can be reused as subbase and base soils. The abrasion level of the coarse portions of inert materials from the three sites meets the required level of coarse aggregate according to Standard Taiwan Code CNS-490. On the other hand, the maximum dry unit weights of fines of inert materials from the three sites are greater than 14.7 kN/m3, and their shear strengths are higher than that of the same classification group (SW–SM) of natural soils, so they can be reused as construction soils.

Analysis of CO2 Emission in the Waste Disposal Process Based on Computation of Construction Waste

2014 ◽  
Vol 1025-1026 ◽  
pp. 1079-1082 ◽  
Author(s):  
Young Jin Bok ◽  
Sung Ho Tae ◽  
Rakh Yun Kim
Keyword(s):  
Waste Disposal ◽  
Basic Unit ◽  
Recycling Process ◽  
Construction Waste ◽  
Waste Landfill ◽  
High Emission ◽  
Incineration Process ◽  
Concrete Recycling

The purpose of this study is to analyze CO2 emission based on computation of construction waste which occurs during new constructions. To accomplish the purpose, Basic unit data of existing construction wastes was analyzed and basic unit of construction wastes generated during new constructions was proposed. In addition, basic unit of CO2 in the disposal process of construction waste established as the national LCI DB of Korea was applied to analyze CO2 emission during the disposal process of waste (landfill, incineration, recycling) generated during new constructions. As a result, flammable materials showed relatively high emission of 17.75kg-CO2/kg and 2.40kg-CO2/kg for the landfill process and recycling process, and inflammable materials had high emission of 0.74kg-CO2/kg for the incineration process. As a result of analysis for each waste, emission was found to be in decreasing order of landfill and recycling processes for concrete, recycling, landfill and incineration processes for metals, incineration, recycling and landfill processes for wood and flammable materials, and landfill, recycling and incineration processes for inflammable materials.

The effectiveness of Hong Kong's Construction Waste Disposal Charging Scheme

2008 ◽  
Vol 26 (6) ◽  
pp. 553-558 ◽  
Author(s):  
Jane L. Hao ◽  
Martin J. Hills ◽  
Vivian W. Y. Tam
Keyword(s):  
Waste Disposal ◽  
Construction Waste

scholarly journals Identification and Evaluation of Urban Construction Waste with VHR Remote Sensing Using Multi-Feature Analysis and a Hierarchical Segmentation Method

2021 ◽  
Vol 13 (1) ◽  
pp. 158
Author(s):  
Qiang Chen ◽  
Qianhao Cheng ◽  
Jinfei Wang ◽  
Mingyi Du ◽  
Lei Zhou ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Bare Soil ◽  
Classification Model ◽  
Feature Analysis ◽  
Feature Subset ◽  
Analysis Method ◽  
Remote Sensing Images ◽  
Construction Waste ◽  
Hierarchical Segmentation ◽  
Urban Construction

With rapid urbanization, the disposal and management of urban construction waste have become the main concerns of urban management. The distribution of urban construction waste is characterized by its wide range, irregularity, and ease of confusion with the surrounding ground objects, such as bare soil, buildings, and vegetation. Therefore, it is difficult to extract and identify information related to urban construction waste by using the traditional single spectral feature analysis method due to the problem of spectral confusion between construction waste and the surrounding ground objects, especially in the context of very-high-resolution (VHR) remote sensing images. Considering the multi-feature analysis method for VHR remote sensing images, we propose an optimal method that combines morphological indexing and hierarchical segmentation to extract the information on urban construction waste in VHR images. By comparing the differences between construction waste and the surrounding ground objects in terms of the spectrum, geometry, texture, and other features, we selected an optimal feature subset to improve the separability of the construction waste and other objects; then, we established a classification model of knowledge rules to achieve the rapid and accurate extraction of construction waste information. We also chose two experimental areas of Beijing to validate our algorithm. 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 indexes of the construction waste and buildings reached 1.000, and the separability indexes of the construction waste and vegetation reached 1.000 and 0.818. The experimental results show that our method can accurately identify the exposed construction waste and construction waste covered with a dust screen, and it can effectively solve the problem of spectral confusion between the construction waste and the bare soil, buildings, and vegetation.

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