Concrete is everywhere! In pavements, building structures, foundations, motorways/roads, overpasses, parking structures, brick/block walls and bases for gates, fences poles, and many more. Concrete is used more than any other man-made material on the planet. It has been said that instead of naming our era "The Nuclear Age" it Should be named "The Concrete Age" as almost all of our modern lifestyle and constructions Depend on this material.
This five-day course covers the manufacturing, designing, and maintaining of concrete. It includes details about ingredients and their quality, quantity, and effect on the final product of concrete. Concrete designing, its Specifications, standards, and codes, and the concrete mix design are discussed in detail along with various procedures and precautions for field manufacturing of concrete. The defects, investigations and the remedial measures and repairs are covered in detail and the modern concepts like ready mix concrete, precast and prestressed concrete and their applications are also reviewed.
The basics from ingredients of concrete to repair and maintenance is covered throughout the workshop and would be very useful to every technician who works with concrete.
At the end of this course the participants will be able to:
- Understand what concrete is and why it is used everywhere for construction.
- Study the ingredients of concrete and their importance in the quality control of the concrete.
- Learn the chemistry of concrete.
- Be able to do simple concrete mix designs.
- Learn everything about concrete manufacturing.
- Know about testing, inspection, and quality control of the concrete.
- Understand the defects which can occur in concrete at different stages or shortcoming and their remedies.
- Study modern concepts like ready-mix concrete, precast and prestressed concrete.
- Learn the methods of protection and maintenance of concrete.
- Know the safety precautions to be taken while working with concrete.
- Understand the concrete prepared for special purposes and the admixtures which can affect the properties of concrete.
- Design of concrete with requisite strength.
- Concrete manufacturing.
- Testing, inspection, and quality assurance.
- Ready-mixed concrete.
- Concrete admixtures.
- Concrete – shortcomings.
- Protection from concrete abrasion, corrosion, and chemical attack.
- Concrete repair.
- Special purpose concrete.
Unit 1: Understanding concrete:
- The history of concrete
- Main constituents of concrete and their characteristics
- Aggregates and mineral additions
- Chemistry of concrete
- Cement chemical properties
- Hydration of cement
- Characteristics of concrete
- What makes concrete develop strength?
- What makes concrete durable?
- Deterioration common reasons
- Related to ingredients chlorides, sulphates, and aggregate-alkali reaction
- Related to climate – temperature (hot/cold) and humidity
- Related to manufacturing and workmanship mixing, transportation, compaction, cold joints, and large mass
Unit 2: Design of concrete with requisite strength:
- Standard specifications, codes, and guidelines
- Concrete mix design the fundamentals
- Target strength
- Cement content
- Aggregate sizing
- Water cement ratio
- Mix design procedures
- Specification development
- Mandatory requirements
- Durability parameters
- Investigating defects
Unit 3: Concrete manufacturing:
- Raw material storage and handling
- Concrete mixing and production
- Transportation of concrete
- Dealing with temperature
- Formwork and its influence on durability
- Placement of fresh concrete
- Treatment to joints
- Consolidation and compaction procedures
- Curing and care of green concrete
Unit 4: Testing, inspection and quality assurance:
- Laboratory and full-scale trial mixes
- Quality assurance
- Acceptance criteria
- Sampling and testing of ingredients
- Sampling of concrete
- Tests on hardened concrete
- Analysis of concrete
- Non-destructive testing methods for concrete
Unit 5: Ready mixed concrete:
- Types of RMC
- Specifications and tolerances
- Quality assurance
- Production and transportation
Unit 6: Concrete admixtures:
- Benefits of admixtures
- Types of admixtures
- Water reducing admixtures
- Air entraining agents
- Property enhancing admixtures
- Water proofing agents
Unit 7: Concrete – shortcomings:
- Crazing and shrinkage
Unit 8: Protection of concrete abrasion, corrosion and chemical attack:
- Designing a protection strategy
- Surface preparation
- Improving abrasion and wear resistance
- Design and construction techniques
- Coatings and toppings
- Protection against corrosive environments
- Sealers and coatings
- Toppings and linings
- Cathodic protection and metallising
- Preventive maintenance and monitoring
Unit 9: Concrete repair:
- Inspection and investigation
- Procedures of repair or replacement
- Pressure grouting
- Shot crete
- Demolition of old concrete
- Repair of delaminated structure
Unit 10: Special purpose concrete:
- High strength concrete
- Fiber reinforced concrete
- Cellular concrete
- Polymer concrete