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Related Concept Videos

Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

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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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Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
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'Relieved Working' study: systematic development and design of an intervention to decrease occupational quartz

Karen M Oude Hengel1, Erik van Deurssen, Tim Meijster

  • 1Netherlands Organisation for Applied Scientific Research TNO, P,O, Box 718, 2130 AS Hoofddorp, The Netherlands. karen.oudehengel@tno.nl.

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Summary

This study developed and evaluated an intervention to reduce occupational quartz exposure in construction. The Intervention Mapping protocol ensured stakeholder input, enhancing feasibility for workers and managers.

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Area of Science:

  • Occupational Health
  • Industrial Hygiene
  • Construction Safety

Background:

  • Occupational quartz exposure is a significant risk in the construction industry.
  • Evidence-based interventions to mitigate quartz exposure are limited.
  • This study addresses the need for effective strategies to reduce hazardous dust exposure.

Purpose of the Study:

  • To systematically develop an intervention to reduce occupational quartz exposure.
  • To evaluate the effectiveness of the developed intervention.
  • To integrate technical, behavioral, and organizational factors into a comprehensive strategy.

Main Methods:

  • Intervention developed using the Intervention Mapping protocol, incorporating literature evidence and stakeholder input.
  • Intervention includes company-wide meetings, worksite visits, and manager training sessions.
  • Effectiveness evaluated via a cluster randomized controlled trial with exposure assessments and questionnaires.

Main Results:

  • The Intervention Mapping approach facilitated stakeholder engagement, improving intervention design.
  • The intervention is designed to be feasible and practical for construction settings.
  • Stakeholder input enhanced the appeal and integration of the intervention into daily operations.

Conclusions:

  • The Intervention Mapping protocol proved effective for developing a practical intervention for occupational quartz exposure.
  • Stakeholder collaboration was crucial for creating an intervention that is both effective and implementable.
  • The developed intervention is well-suited for reducing quartz exposure in the construction industry.