Construction Quality Control and Quality Assurance
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Construction Quality Control and Quality Assurance Course
Introduction:
The highway industry has embraced innovation by creating a significant market for utilizing "waste" resources, which simultaneously reduces the demand for "natural" resources. Waste streams and industrial by-products that were previously destined for landfills are now being increasingly incorporated into sustainable highway design and maintenance practices. Instead of relying solely on raw materials, these waste resources are being integrated into various components of highway infrastructure, such as asphalt pavements, concrete, base courses, and embankments.
Materials like reclaimed concrete and asphalt, scrap tires, plastics, steel slag, roofing shingles, coal fly ash, and composted municipal organic wastes have been proven to be cost-effective, efficient, and versatile materials that find wide application in roadway construction.
In addition to using waste resources as building materials, the highway industry is also committed to other environmentally sustainable practices. These practices include effective right-of-way management, reusing organic materials derived from clearing and grubbing operations, deconstructing buildings that have been removed from rights-of-way, and minimizing the footprint required for acquiring rights-of-way.
Overall, this innovative approach to the highway industry not only reduces the reliance on natural resources but also promotes sustainability by effectively utilizing waste resources and incorporating environmentally friendly practices throughout the construction and maintenance processes.
Course Objectives:
The objectives of this program can be summarized in the following main points:
- Enhancing the skills of road construction engineers in their field
- Introduction to road construction materials
- Determination of engineering properties of road materials
- Quality control and quality assurance in road construction
Who Should Attend?
Road construction engineers working in road construction, construction supervision of road projects.
Course Outlines:
An introduction to road construction materials including but not limited to the following:
- The used materials for road embankment, road pavement (gravel roads, surface dressed roads, paved roads, etc)
- Material properties
- Soil and subbase: Standard tests to determine the engineering properties of road materials such as; sieve analysis, liquid limit, plastic limit, plasticity index, soil classification according to AASHTO classification system, standard and modified proctor tests, California bearing ratio (CBR), modulus of resilient of subgrade soil, relative compaction test, etc.
- Base course: Standard tests to determine the engineering properties of road materials such as; sieve analysis, liquid limit, plastic limit, plasticity index, soil classification according to AASHTO classification system, standard and modified proctor tests, California bearing ratio (CBR), modulus of resilient of subgrade soil, relative compaction test, Los Angeles (abrasion) test, absorption, and disintegration test, etc.
- Bitumen material:
- Asphalt cement
- Cut back asphalt
- Emulsified asphalt
- All standard tests on different types of bituminous materials will be illustrated including but not limited to; bitumen grade test, softening point, ductility, the solubility of bituminous materials in organic solvents, etc.
Asphalt mixtures:
Types of asphalt mixtures
- Hot mix asphalt concrete
- Worm mix asphalt concrete
- Cold mix asphalt concrete
Properties of each mix will be discussed. Also, the components and method of manufacturing will be illustrated
Design of Asphalt concrete mixture
- Testing of materials used in the asphalt mix (coarse aggregate, fine aggregate, mineral filler, binder, etc)
- Specification requirements
- Blinding of aggregate
- Graduation of blinded aggregates
- Marshal method for the design of asphalt mixtures; volumetric relationships, optimum bitumen content, tolerance, job mix formula.
Quality control and quality assurance in road construction
- The importance of quality control in road construction processes
- Selecting materials sources
- Testing of materials
- Inspection of the executed work
- Testing the executed work
- Filling the test result for the quality assurance process
- Quality assurance in road construction processes
- Road construction technology
- Introduction to the new technologies in road construction
- New equipments, new techniques used in road construction