Course Title: Apply knowledge of concrete technology

Part B: Course Detail

Teaching Period: Term2 2013

Course Code: CIVE5664

Course Title: Apply knowledge of concrete technology

School: 130T Vocational Engineering

Campus: City Campus

Program: C6093 - Advanced Diploma of Engineering Design

Course Contact: Program Manager

Course Contact Phone: +61 3 9925 4468

Course Contact Email: vocengineering@rmit.edu.au


Name and Contact Details of All Other Relevant Staff

A.S. (Ahmet) Ertuncay. Program Manager.
School of Engineering (TAFE)
Civil Operations
Tel : (03) 9925 8375
Fax : (03) 9925 4377
e-mail ahmet.ertuncay@rmit.edu.au

W.R. (Bill) Harding, Teacher
School of Engineering (TAFE)
Civil Operations
Tel. 9925 4443
Fax. 9925 4377
e-mail: bill.harding@rmit.edu.au  
 

Nominal Hours: 40

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Pre-requisites and Co-requisites

Nil

Course Description

This unit of competency covers the skills and knowledge required to understand the science and technology of concrete and relate these to the uses of concrete in civil construction.


National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

EDC110B Apply knowledge of concrete technology

Element:

1. Apply knowledge of the principle properties of the constituents of normal Portland cement concrete and special concrete mixes.

Performance Criteria:

1.1 The properties of commonly used ingredients for concrete batching using Portland cement are identified.
1.2 The situations in which special concrete mixes would be required are identified.
1.3 Ingredients for two special concrete mixes are listed and the conditions of their use identified.

Element:

2. Identify the effects of admixtures in concrete and the basic reason for placing steel reinforcement.

Performance Criteria:

2.1 The strength of un-reinforced concrete and how various admixtures can be used to influence this and other properties are identified and explained.
2.2 Demonstrate techniques for cement replacement.

Element:

3. Conduct appropriate tests on a range of concrete design mixes using Portland cement and local aggregates.

Performance Criteria:

3.1 Perform trial mix designs for various concrete target strengths. Include the creation of a grading curve for the aggregates.
3.2 The concrete cylinders from these batches are tested to measure concrete strengths.

Element:

4. Identify properties of concrete in the plastic and hardened states.

Performance Criteria:

4.1 Identify methods by which concrete properties in the plastic and in the hardened state can be changed and the resulting effect on durability.

Element:

5. Evaluate the methods of transporting, placing and compacting concrete.

Performance Criteria:

5.1 Suitable methods of transporting, placing and compacting concrete, to achieve durable structures are evaluated.

Element:

6. Apply understanding of the methods of finishing and the effect of curing concrete.

Performance Criteria:

6.1 Finishing techniques and the effect of curing concrete for certain specified minimum periods of time are identified.
6.2 Various curing methods and their respective efficiencies are evaluated.


Learning Outcomes


Refer to the elements


Details of Learning Activities

Teacher Directed:
• Teacher–led face to face lectures for each element in designated areas of underpinning knowledge, including workplace scenarios and the use of overheads, videos and notes from local web page and covering:
• Cement & Concrete technology
• Properties and Durability of Concrete
• Concrete mix design to AS 3600
• Concrete testing to AS 3600
• Special Concretes.
• Handling, Placing, Compacting and Finishing of Concrete.

Student-based problem-solving:
• Participate in individual and team problem solving activities completed to industry standard related to typical engineering workplace problems and covering:
• Cement & Concrete technology
• Properties and Durability of Concrete
• Concrete mix design to AS 3600
• Concrete testing to AS 3600
• Special Concretes.
• Handling, Placing, Compacting and Finishing of Concrete.


Group-based:
• Participate in individual or small group research using Self Help Questions/Answers for each element in designated areas of underpinning knowledge, accessed via local web site for this unit.

Student-based research:
• Participate in an individual major written research project undertaken on a construction site addressing the designated areas of underpinning knowledge for each element.
 


Teaching Schedule

See Online Learning Hub via MyRMIT (Blackboard) for details of weekly schedule.
Refer also to the Learning Guide/Package available on the Blackboard.


Learning Resources

Prescribed Texts

HB 2.2 Australian Standards for Civil Engineering Students, Part 2: Structural Engineering.
AS 3600 Concrete Structures Code


References

CACA & Standards Australia, 2002, Guide to concrete construction, 2nd edn., Cement and concrete association of Australia and Standards Australia
CACA, 2000, The housing concrete handbook, Cement and concrete association of Australia: St. Leonards, NSW
Filsell, I, 1995, Concrete technology and applications, Engineering Education Australia: The Institution of Engineers, Australia: North Melbourne
Pendyala, R. 1995- PU 258; Concrete, materials and testing, Open Training Services: Footscray, Vic
CACA & Standards Australia, 2002, Reinforced concrete design, in accordance with AS 3600-2001, 4th edn., Cement and concrete association of Australia and Standards Australia
Websites:
Standards Australia. www.standards.com.au or email sales@standards.com.au
Standards Australia Online www.rmit.edu.au/library via RMIT library databases
For specialist publications related to cement or concrete contact:
Cement and Concrete Association of Australia. www.concrete.net.au or email info@ccaa.com.au
For publications related to steel reinforcement for concrete:
Steel reinforcement Institute of Australia
 


Other Resources


Overview of Assessment

Assessment are conducted in both theoretical and practical aspects of the course according to the performance criteria set out in the National Training Package. Students are required to undertake summative assessments that bring together knowledge and skills. To successfully complete this course you will be required to demonstrate competency in each assessment tasks detailed under the Assessment Task Section.

Your assessment for this course will be marked using the following table:

NYC (<50%) Not Yet Competent

CAG (50-59%) Competent - Pass

CC (60-69%) Competent - Credit

CDI (70-79%) Competent - Distinction

CHD (80-100%) Competent - High Distinction



 


Assessment Tasks

Test 1 is based on learning outcome 1, 2, 3, & 4
Test 2 is based on learning outcome 5, 6, 7, 8, & 10
Project 1 is based on learning outcome 9


Assessment Matrix

 Element Covered Assessment Task Proportion of Final Assessment Submission Time
 1, 2, 3, 4 Test 1: On-line (Supervised) 40% Week 10
 5, 6, 7, 8, & 10 Test 2: On-line (Supervised) 40% Week 17
 9 Project 1: Finished concrete 20% Week 16
 All Topics Feedback summary Possible re-mark Last Week

Other Information

Underpinning Skills and Knowledge
Concrete Materials
Briefly describe concrete-ingredients, hydration, setting, strength.
Reinforced concrete-steel bars, wires, tendons.

Cement
• briefly, ingredients, production
• mineral content and properties
• heat of hydration, setting time, strength development
• shrinkage
• resistance to aggressive agents-porosity, acid, sulphates,
seawater, frost, heat
• types of cement

Aggregates
• briefly, importance of
• properties-rock type, artificial aggregates, grading, shape and
texture, bond, strength, resistance to wear, SG, porosity
• deleterious substances-organic matter, surface coatings, salt,
unsound particles, alkali/ aggregate reaction
• aggregate crushing test

Water
• quality-portable, pH range, salt content, silt
• effect of quality on-setting, strength, corrosion alkali/agg

Steel
• types of bars, fabric
• tempcore bars-bending, joining
• galvanized bars, prestressing tendons and wire
• bond

Admixtures
• behaviour, application, effect, air-entraining, set-occel., setretarding,
water-reducing, superplasticisers, expanding,
permeability-reducing
Pozzolans
• effects on-porosity, workability, strength
• types: fly-ash, others

Tests
• make cylinders for crushing
• moisture content of sand
• silt test
• organic content of sand
• aggregate crushing
• slump test

Properties and Durability of Concrete
Properties of Plastic Concrete:
• workability, define
• factors affecting workability: w/c ratio, water content, % airentrainment,
aggregate grading, agg./cement ratio,
superplasticisers
• measuring workability: slump test and its usefulness on site
• effects of time and temperature on workability
• segregation: define, types, effects of aggregate grading
• bleeding: define, causes, remedies

Properties of Hardened Concrete:
• strength: tensile, compressive, w/c ratio, age, bonding of reinf.,
curing time and temperature, cement type, water quality,
aggregate type, density, porosity, admixtures
• elasticity, shrinkage: stress/strain, drying shrinkage, effects of
aggregate, admixtures, curing and storage, shrinkage induced
cracks, external moisture effects, carbonation shrinkage
• creep: define, relaxation of stress, creep recovery: factors
influencing creep-vol. of cement paste, aggregates, strength of
concrete, type of cement, admixtures, humidity, relation
between creep and time: effects of creep – deflection of
beams/slabs, stress redistribution, loss of prestress

Durability of Concrete:
• define: requirements of AS3600 – corrosion of reinforcement,
abrasion, freeze/thaw
• corrosion: mechanics of corrosion: corrosion of concrete and
prevention-quality of concrete, cement type, cover cracks:
corrosion of steel and prevention-special steels, coating steel ex.
epoxy and galvan., corrosion inhibitors in concrete, cathodic
protection
• abrasion: define: factors affecting – strength, aggregates,
surface finish, curing, AS3600
• freeze/thaw: frost action: factors affecting frost action –
moisture content, w/c ration, entrained air, AS3600
• other factors: alkali/aggregate reaction, seawater and AS3600,
acids, sulphates

Concrete Mix Design
• define
• methods: ex. American Concrete Institute method, British Road
Note 4 method
• factors affecting mix proportions: characteristic compressive
strength, target strength, durability, workability and cohesion,
max. size of aggregate, grading and size of aggregates,
agg./cement ratio, w/c ration, admixtures
• design a trial mix of given strength and workability in
accordance with AS3600 exposure classifications
• produce the trial mix in the lab. and adjust ingredients if
necessary. Test cylinders at 28 days
• prepare concrete cylinder (for Brazil test) and beam for tensile
strength tests

Transporting, Placing and Compacting Concrete
Transporting: delay, drying out, segregation, methods of transporting,
pumping
• delay: factors affecting stiffening, effect on slump
• drying out: humidity, mix, cover
• segregation: cohesive mix, methods of avoiding
• methods of transporting: ready-mix trucks, concrete pumps,
other
• pumping concrete: types of pumps and performance, props. of
concrete for easy pumping, pumping procedures

Placing: form work and reinforcement, avoiding segregation, methods
of handling for good practice, deep lift placing, cold weather placing,
hot weather placing, placing concrete under water, shotcrete, placement
of mass concrete

Compacting
• objectives and importance, methods
• immersion vibrators, external vibrators, surface vibrators,
vibrating tables
• effects of vibrators on mix design
• effects of prolonged vibration and revibration
• surface defects and causes
• good practice
• segregation and bleeding

Curing, Finishing and Special Concretes
Curing concrete
• importance of curing
• methods and effects of curing: water or damp cover: *ponding,
sprinkling, damp covers – impermeable mediums: *waterproof
material, shuttering, curing compounds – accelerated curing:
*low pressure steam curing, high pressure steam curing
(autoclaving), infra-red curing, electrical curing
• problems: plastic shrinkage cracks, effects on hydration, loss of
strength, abrasion resistance, effects of delayed curing

Surface finishing:
• summary
• untreated concrete surfaces
• shuttering types
• tooled surface finishes
• exposed aggregate finishes, miscellaneous methods
• abrasion resisting finishes
Special concretes:
• concrete for water-retaining structures, AS3735 requirements
• light weight concrete
• high density concrete
• fibre and glass reinforced concrete
• roller compacter concrete (RCC)
 

Course Overview: Access Course Overview