Concrete Engineers Malaysia @ConcreteEnginee
Ready Mix Concrete Concrete QUALITY CONCRETE DELIVERED ON TIME MADE TO SPECIFICATION. Engineers passionate about concrete and helps you win projects. myconcreteengineer.wixsite.com/malaysia 1, Jalan TSB 6, Taman Industri Joined April 2018-
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MASS CONCRETE FOR DAMS Temperature control is paramount. Proportioning aims at: -Low cost -Low temp rise -Strength durability impermeability Challenge: cracks from tensile stresses due to heat Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
WHAT TO CHECK BEFORE CONCRETING? Many asked. Approved concrete mix design CEMENT matching mix design AGGREGATES matching mix design and free of contaminants ADMIXTURES matching mix design etc Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
AGGREGATES FOR QUALITY CONCRETE Effect of Aggregates on Concrete 60-80% of mix; gives strength,bulk Select: durability, strength, workability Clean, hard, strong particles free of chemicals Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
FLY ASH CONCRETE BRINGS SUBSTANTIAL SAVINGS in cement, overall construction cost. Strength: greater than OPC 20-30% replacement-most optimal strength results; more air entrained admixture Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
LOW HEAT CEMENT USES: MASS CONCRETING WORKS: dams, foundations, wind turbine plinths ADVANTAGES 1. MINIMISE THERMAL CRACKING 2. IMPROVED DURABILITY 3. INCREASED WORKABILITY, PUMPABILITY Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
WHERE DO WE USE HIGH PERFORMANCE CONCRETE? BRIDGES Girders span longer-higher load HIGH RISE STRUCTURES Reduce dead load, deflection, vibration, maint HIGHWAY PAVEMENTS Early strength gain Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
WHAT IS SO SPECIAL ABOUT HIGH PERFORMANCE CONCRETE? HPC has better performance Basic features: 1 STRENGTH < 50MPa Normal (NSC) ~50Mpa High (HSC) 2 DUCTILITY 3 DURABILITY Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
MATERIALS USED IN HIGH-PERFORMANCE CONCRETE CEMENT Cement type not only on mortar-cube;28-56-91days too AGGREGATES Size, shape, surface texture, mineralogy ADMIXTURES PFA, silica fume, slag Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
HOW MANY TYPES OF HIGH-PERFORMANCE CONCRETE? Based on char strength: a) ORDINARY: 10-20MPa. b) NORMAL: 25-55MPa. c) HPC: 60-100MPa. d) VERY HPC: 100-150MPa. e) EXCEPTIONAL: >150MPa. Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
WHY USE HIGH PERFORMANCE CONCRETE? Developed to meet new challenging requirements: new structures-technologies SHRP’s requirements: 4 hours > 17.5Mpa 24 hours >35Mpa 28 days >70Mpa W/C ≤0.35 Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
WHERE IS HIGH PERFORMANCE CONCRETE USED? Widely used in Civil Engineering: tunnels, bridges, pavements, high rise buildings because of strength, durability, and high modulus of elasticity. Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
NEED ALL THESE CONCRETE QUALITIES? -High Workability, Strength, Modulus, Density, Dimensional Stability? -Low Permeability? -Resistance To Chemical Attack? For High Performance Concrete (HPC) Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
HIGH STRENGTH, HIGH FLOW ABILITY AND HIGH DURABILITY – HIGH PERFORMANCE CONCRETE HPC-widely used in large concrete constructions needing high strength, high flow ability and high durability Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
HIGH EARLY STRENGTH CONCRETE Strike Formwork Early Lower Cost Of Structure Smaller Support Elements Common Applications: •HIGH RISE •PRECAST When REDUCED WEIGHT or ArchItecturally SMALLER MEMBERS needed Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete
FACTORS AFFECTING CONCRETE PUMPABILITY Cementitious materials, aggregate, admixtures, & batching-mixing PFA and silica fume have positive effect Batching-mixing must be accurate and adequate Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
FIBRE-REINFORCED CONCRETE SPEEDS CONSTRUCTION, REDUCES COSTS Fibre can be added at batching plant or mixer truck to enhance performance and durability. REDUCED CONSTRUCTION TIME AND LABOR COSTS Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
HIGH PERFORMANCE CONCRETE High Strength+Durability High Resistance to Chemical Attack High Workability-EASE OF PLACEMENT SMALLER MEMBERS INCREASE USABLE AREA REDUCE CONCRETE VOLUME & COST Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology
MASS CONCRETING TEMPERATURE CONTROL Cooling aggregates, ice, water cooler… We have completed many Thermal Control Plans for various projects. We can help you develop one Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology #concretemalaysia
INCREASE NET FLOOR AREA (SMALLER COLUMN SIZES) LOWER CONCRETE & CONSTRUCTION COST SHORTEN CONSTRUCTION DURATION thru HIGH STRENGTH CONCRETE for High Rise Buildings - Case study Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology #concretemalaysia
SAVE 25% CONCRETE COST Thru SELF-COMPACTING CONCRETE Cement less 50% Value Engineering HighCompaction+strength+durability+Green Taiwan Underground Rail 8.2 km 3 stations Chat: wa.link/sl5ey0 myconcreteengineer.wixsite.com/malaysia #concrete #concretetechnology #concretemalaysia
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