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Related Concept Videos

Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

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As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
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Sustainable Development01:43

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As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
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Workability of Concrete01:25

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The workability of concrete is a crucial property that affects its handling, placing, and finishing during construction. It describes the ease with which concrete can be mixed, placed, compacted, and finished. Workability is primarily concerned with the concrete's movement and its ability to resist internal friction and external resistance from molds and reinforcements during the application process.
Concrete's workability is determined by its resistance to internal forces that arise...
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Manufacture of Concrete Masonry Units01:27

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The process of manufacturing concrete masonry units begins by mixing stiff concrete composed of Portland cement, aggregates, and water. This mixture is then poured into metal molds. To ensure the concrete settles uniformly and to avoid separation of its components, the mixture in the molds is subjected to vibration. Shortly after, the still-wet blocks are removed from the molds and placed on racks.
These wet blocks are then transported for curing, which can occur in one of two environments: a...
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Laying Concrete Masonry01:16

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Constructing a concrete masonry wall involves a series of steps designed to ensure durability, stability, and alignment. The construction starts with preparing the base, which includes cleaning the area where the wall will be erected. The next step involves spreading mortar where the first row of concrete blocks will be laid, typically starting at a corner section to help define the wall's boundaries.
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Design Example: Managing Concrete Workability01:14

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This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
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Design and Construction of an Urban Runoff Research Facility
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Building a Sustainable Construction Workforce.

Rosemary K Sokas1,2, Xiuwen Sue Dong3, Chris Trahan Cain4

  • 1School of Nursing and Health Studies, Georgetown University, Washington, DC 2005, USA. sokas@georgetown.edu.

International Journal of Environmental Research and Public Health
|November 2, 2019
PubMed
Summary
This summary is machine-generated.

The average construction worker is aging, facing challenges to delayed retirement. Unions are exploring solutions like contract language and training to support older members in the construction industry.

Keywords:
aging workforcecareer pathwaysconstruction workerslabor unionsolder workerssustainable workforceunion interventionswork accommodations

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Area of Science:

  • Occupational Health
  • Gerontology
  • Labor Economics

Background:

  • The U.S. construction workforce is aging, with the average worker nearing retirement age but facing significant challenges to continued employment.
  • Delayed retirement is often driven by economic necessity, yet the physically demanding nature of construction work presents barriers for older workers.

Purpose of the Study:

  • To analyze age trends across different construction trades and examine how building trade unions are addressing their aging membership.
  • To identify challenges faced by older construction workers and explore union-led interventions and solutions.

Main Methods:

  • A mixed-methods approach combining trade-specific age statistics from the Current Population Survey (CPS) with key informant interviews of labor leaders.
  • Analysis of age demographics from 2003 to 2017 to identify trends in the construction industry.

Main Results:

  • Mean and median ages across all construction subgroups increased between 2003 and 2017.
  • Immigrant construction workers were younger (41) than U.S.-born workers (43). Unionized workers (42) were older than non-union workers (39) in 2017.
  • Self-employed workers were significantly older (49) than wage-and-salary workers (40).

Conclusions:

  • Construction unions are actively addressing the challenges of an aging workforce, including age discrimination and physical limitations.
  • Potential solutions involve contract negotiations for older worker inclusion, physical task modifications, and career development opportunities like mentoring and site management training.