Conditional assessment to determine residual life of aged structures via various testing (e.g. chloride, carbonation, corrosion, resistivity, and cover etc.) and mathematical modelling and to optimize intervention to deterioration process
Office: +61 1300 223 666
Mobile: +61 467 771 653
BELL ASSET ENGINEERING
Consulting Engineers & Project Managers
Our Missions
Bell Asset Engineering (BAE) is committed to providing the most effective, cost efficient and long-last solutions for the stake-holders of infrastructure and building assets. This includes asset owners/operators, contractors, designers and material suppliers, who are facing increasing challenges in planning and executing maintenance and upkeep works.
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Highlight Services
Site Inspection and Testing
Investigating the cause, extent, implications of various defects including cracks, voids, honeycombs, low strength, and reduced cover. Assessing the impacts on durability, and providing the optimum solution.
Determining concrete strength via coring, rebound hammer testing (with site-specific conversion curves), and ultrasonic testing
Determining the locations and configurations of reinforcing, location of services, and cover concrete/ground with the use of GPR scanning and eddy current cover-meters
Determining the location of defects and element thickness using impact echo, GPR and ultrasonic testing
Temperature measurement and monitoring in concrete structures and hotbox mock-ups
Monitoring structures’ movement, displacement, stress-bar loads, strains, crack movement etc
Other tests including abrasion, acid erosion, sulfate attack, crack depth/mapping etc.
Repair and Rectification Design
Repair design for distressed or defective structures with optimum repair materials and system considering compatibility between substrate and repair materials
Repair options including crack injection, protective coating, patch repair (using concrete, mortar, and epoxy), cathodic protection, carbon-fiber strengthening etc.
Preparing tender documents and evaluating tenders based on their technical merits
Specifying repair QA testing requirements and conducting testing
Signing-off or certifying repair work (e.g. QDTMR Form 15/16)
Durability Design & Plan
Providing durability designs or plans for infrastructure and building projects to achieve their design lives via either complying relevant Australian/state standards and/or advanced mathematical modelling for concrete structures (especially in chloride and atmospheric environment)
Assessing and classifying exposure condition/environment, including geochemical data, water analysis results, distance to coast, air composition and processing liquid etc.
Specifying the suitable durability requirements including cover thickness, concrete diffusivity, carbonation coefficient, w/b ratio, SCM type and content, coating type and thickness etc.
Dr S Zhou developed world-leading third generation models for chloride diffusion and carbonation process allowing most accurate service life design or determination and is the first author for CIA modelling guideline. Click here for details.
Assessing various construction defects (e.g. voids, cracks, low strength, low cover etc.) for durability compliance and providing best rectifying solutions
Preparing durability completion report and maintenance and operation manual for projects
Thermal Modelling and Cracking Analysis in Concrete
Conduct early age thermal modelling using CIRIA C660 & C766 programs and their modified versions to predict concrete transient temperature distribution across element thickness for estimation of peak temperature and temperature differential
Consider various input parameters including element size, cement/binder content and composition, thermal conductivity (related to aggregate type), form-work or insulation type and retention time, placement temperature, ambient conditions (temperature and wind), other contact medium (soil or water), way of heater transfer (linear or radial) etc.
Estimating restraint level for various conditions including internal restraint, edge restraint, end restraint, discrete pile restraint, friction restraint, curling restraint, arching restraint, and combined restraints etc. and restraint controls.
Cracking analysis based on various restraints, temperature differentials/rises and reinforcement density to determine cracking risk, crack width and cause of cracking and suitable control measures such as placement temperature, form-work or insulation, concrete mix design, construction interval etc.
Develop and use new models for water cooling pipes, concrete on ground, layered construction, and cylinders.
Modelling adiabatic heat of cement hydration curve based on hot box temperature measurement data
Structural and Geotechnical Design & Analysis
Concrete and steel Structures for different industry sects including residential/commercial buildings, bridges, ports and marines, water chambers, railways, energy/mining, industrial.
Structural integrity assessment on distressed or defected structures in above industry sects to determine the load-carry capacity and service limit status
Structural assessment via desktop analysis and testing and monitoring stress and deflection under specific load level
Pile integrity testing and assessment
Geotechnical assessment and investigations, design of foundation, piling, footings, tunnel, anchors, retaining walls, layer works, earth work etc.
We do advanced structural modelling (finite element analysis) including transient/vibration dynamic analysis for wind/earthquake; quasi-static analysis for moving vehicles and machinery; time-dependent analysis for shrinkage/creep; secondary (geometrical) analysis for slender building swaying or steel structure; soil/foundation/pile interaction analysis; post crack analysis for structural members and etc.
We deliver packages of civil and structural design/shop drawings.
FEA Modelling Examples
Slope & Retaining wall Stability
Highway and Heavy Truck Crossing Bridges
Prestress Super-T Girder and Planks
Other Services
Construction supports including concrete mix design review, strength data review, quality data review/control, independent verification, defect review and rectification
Project management for civil and structural projects including project tender and contract documentation, schedule of quantities and rates, tender adjudication, cost estimate, financial control, inspection and testing plans, quality assurance, project delivery, reporting, certification etc.
Material assessment including concrete, grout, polymers, tiles, metals, admixtures, cement, fly ash, slag, and silica fume etc.
Laboratory testing on chemical, strength and petrography properties, trialing to determine concrete performance, design mix proportions, product optimization and research and development
Or Send Us Messages
Contact Us via:
Address: Level 9, 307 Queen Street
Brisbane, QLD 4000
Office: +61 1300 223 666
Mobile: +61 467 771 653
Email: r.bell@bellengineering.com.au
or admin@bellengineering.com.au
Monday-Friday: Open 9 am-5 pm
Sunday & Saturday: Closed