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Article
Publication date: 10 October 2008

Jia‐Yuan Wang, Xiang‐Ping Kang and Vivian Wing‐Yan Tam

This paper aims to analyze on‐site production and sources of construction wastes through data obtained from a detailed questionnaire survey and structured interviews conducted in…

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Abstract

Purpose

This paper aims to analyze on‐site production and sources of construction wastes through data obtained from a detailed questionnaire survey and structured interviews conducted in Shenzhen.

Design/methodology/approach

A questionnaire survey is conducted to investigate the compositions of these construction waste and their sources. One hundred and ten copies are sent to governmental officers, designers, engineers, and contractors, and 84 responses are received, in which the respondent rate is about 76.4 percent.

Findings

According to the survey results, concrete, cement, brick, timber, tile, steel, and aluminum wastes are the main waste sources produced on construction sites. The sources of these wastes are varied. Suggestions to improve the existing waste situation are also discussed.

Originality/value

Various types of construction wastes are generated during construction activities. Expansion of construction wastes not only represents an enormous dissipation of resources but also results in serious environmental pollution, thus creating negative effects to the sustainable development of environmental industry and society. With the developing of economy and industry, waste problems have become more serious in recent years; therefore, waste management is becoming a pressing issue.

Details

Journal of Engineering, Design and Technology, vol. 6 no. 3
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 10 May 2019

Zhi Ding, Xinjiang Wei, Xiao Zhang and Xinsheng Yin

The shield tunnels closely constructed near the foundations have an inevitable influence on the structures, even results in the large settlement or uplift of the structures.

Abstract

Purpose

The shield tunnels closely constructed near the foundations have an inevitable influence on the structures, even results in the large settlement or uplift of the structures.

Design/methodology/approach

The comparison of structural deformation of three different foundations is presented based on the field monitoring data.

Findings

Shield tunnelling parameters vary for the different types of foundations. For the long pile foundations, the recommended speed is 3 to 4 cm/min, the grouting pressure is about 0.3 MPa and the grouting rate ranges from 150 to 180.

Originality/value

The study based on the field monitoring data is rarely reported, especially the topic about the structural deformation of different types of the foundations.

Details

Engineering Computations, vol. 36 no. 4
Type: Research Article
ISSN: 0264-4401

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