constructive solutions High Volume JSW GGBFS 70Concrete using

constructive solutions High Volume JSW GGBFS (70%)Concrete using Chemical admixture Fosroc Auramix 450 - Presentation and Live Demo

Content n Introduction n Brief about GGBFS n Brief about Chemical admixture n Market expectations on high volume GGBFS n High volume 70% GGBFS trial mix details n Demonstration trials. www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Introduction n The supplementary cementitious material (SCM) has been extensively used in the development of high-performance concrete (HPC), which include fly ash, silica fumes, rice husk ashes and ground granulated blast furnace slag (GGBS). n Why high volume replacement of SCM? 4 Sustainable development’’ - ‘‘The development that meets the needs of the present without compromising the ability of future generations to meet their own needs’’. 4 As you know concrete is the second largest used material after water and it stands at 2 tonnes per capita per year and it would continue to increase with time, need alternative SCM like for sustainable concrete. 4 Reduce the emission of CO 2 in atmosphere during manufacturing of cement. There is a general understanding that one tonne of cement production leads to almost one tonne of CO 2 emission. By using 70% GGBFS it shall be reduced to 117 kg/m 3 4 To improvement of the properties of concrete both in fresh and hardened form, www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

GGBFS n Ground Granulated Blast furnace Slag(GGBFS) 4 GGBS is a by-product obtained during the manufacture of iron in the blast furnace. It is economically available in large quantities and suitable for use in ready-mix concrete, in the production of large quantities of site-batched concrete and in precast product manufacturing. n Why (GGBFS) ? 4 Very high replacement compared to other SCM’s 30% -80% 4 Available in large quantities. 4 Processed ( factory produced ) expected to be consistent in quality 4 Enhances the durability 4 Reduces temperature rise in concrete 4 Reduces permeability 4 Reduces alkali-silica reactivity 4 Increases chloride and sulphate resistance. www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

GGBFS n Strength development of GGBFS www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

GGBFS OPC GGBFS PFA CSF Ordinary Portland Cement (fully hydraulic) Ground Granulated Blast Furnace Slag Pulverized Fuel Ash (fly ash) Condensed Silica Fume (micro silica) Properties OPC Si. O 2 % 20 Ca. O % Al 2 O 3 Fe 2 O 3 GGBFS PFA CSF 37 60 95 63 41 1 1 % 6 12 28 2 % 3 2 8 2 Specific surface m 2/kg 290 380 400 18000 Bulk density kg/m 3 1400 1200 950 250 3. 15 2. 9 2. 3 2. 2 Specific gravity www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

GGBFS n Ground Granulated Blast furnace Slag(GGBFS) - Limitations. 4 The use of high volume GGBS in concrete tends to slow down the early age strength, which limits use in the fast-track construction and post-tensioned concrete which are subjected to high early loads and Precast Industry which requires early strength. n How to reduce these limitations (GGBFS)? 4 By increase the surface of area of GGBFS by grinding finer which helps in gaining the early strength. 4 By Reducing the water cementitious ratio 4 By using Chemical admixture www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Chemical admixture n Why Chemical admixture n Properties of Concrete 4 Workability 4 Strength 4 Durability www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Chemical admixture n Chemical admixture 4 Chemical admixtures are the ingredients in concrete other than Portland cement, water, and aggregate that are added to the mix immediately before or during mixing to modify and improve the properties of concrete. n Uses of chemical admixture 4 4 4 4 To increase workability – Flow concrete To increase the workability retention over 3 hrs To convert the conventional low grade concrete to the SCC. To achieve the early strength with out steam curing Reduce the stickiness , ideal for pumping of concrete in high rise building To accelerate or retard Reduce the bleeding Reduce the permeability and increase the durability. www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Market Requirements– GGBFS replacement concrete n Use of GGBFS more than current level of 40 -50% i. e. very close to 70 % 4 From the point of durability and economy n Early strength similar to 50% replacement of GGBFS on using 70% replacement of GGBFS 4 To meet the demand of fast track constructions. n Making conventional grades of concrete from slump concrete to flow concrete with long retentions. 4 For the application of tunnel form shuttering , Mivan shuttering , high rise building and at congested reinforcement junctions. n Compatibility with locally available aggregates and cement. 4 Robustness of the mix - Less sensitivity to the variation in the aggregate gradation like Zone I , II and III and moisture. www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Demonstration high Volume 70% JSW GGBFS Concrete using Chemical admixture Fosroc Auramix 450 I’m sure todays demonstration will add value and data to the high volume GGBFS research. www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Demonstration high volume (70%) GGBFS mix n Material 4 Cement OPC 53 – Ultratech cement Ltd 4 GGBFS from JSW cement Ltd 4 Admixture : Fosroc Auramix 450 4 Aggregates - Granite local source from Bengaluru www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

GGBFS n GGBFS from JSW cement Limited 4 Fineness of GGBFS has been increased from 350 to 380 m 2/kg. to meet the market Objective of Early strength of the concrete mix. www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Chemical Admixture n Auramix 450 Superplsticiser a new generation, low viscosity , PCE based 4 Very low stickiness , ideal for high volume SCM replacement and pumping of concrete in high rise building 4 Very long workability retention over 4 hrs with out excessive retardation and bleeding. 4 Very high water reduction, over 40% suitable for high strength, high performance and high volume SCM concrete. 4 Ideal for normal workability vibrated through to self compacting concrete 4 Single component, no need to additional retarder or VMA 4 Compatible with high cement replacements 4 Compatible with 100% crush Sand 4 Highly robust to take care of variation in the aggregate gradation like Zone I , II and III and moisture. www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

PC based admixture Side chain Specific performances are designed by adjusting functional building blocks, molecular weight, side chain length, charge density, graft density Functional building blocks Water reduction capability Viscosity control Workability retention COOM O C O- O + Stickiness control www. fosroc. com O- O C O- + + Cement affinity linkedin/company/fosroc C Cement Surface Fosroc-International. Limited plus. google. com/+fosro c/

Concrete mix proportion Grade of concrete M 30 Raw materials Quantities /M 3 CEMENT (Ultratech OPC-53) Kg/m 3 114 GGBFS – JSW cement Ltd Kg/m 3 70% 20 mm 266 - Local source from Bengaluru Kg/m 3 ( 16%) 12. 5 MM -Local source from Bengaluru Kg/m 3 (30%) M. SAND -Local source from Bengaluru Kg/m 3 (53%) WATER 572 991 152 ADMIX. Fosroc Auramix 450 PC based admixture W/C Ratio www. fosroc. com 307 0. 75% 0. 40 linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Combined Grading – Zone I 100 90 80 70 60 50 40 30 20 10 0 0, 1 1 www. fosroc. com linkedin/company/fosroc 10 Fosroc-International. Limited 100 plus. google. com/+fosro c/

Combined Grading – Zone II 100 90 80 70 60 50 40 30 20 10 0 0, 1 1 www. fosroc. com linkedin/company/fosroc 10 Fosroc-International. Limited 100 plus. google. com/+fosro c/

Combined Grading – Zone III 100 90 80 70 60 50 40 30 20 10 0 0, 1 1 www. fosroc. com linkedin/company/fosroc 10 Fosroc-International. Limited 100 plus. google. com/+fosro c/

Mix Proportions Trial No. 1 Trail No. 2 Trial No. 3 Zone-I Sand Zone- II Sand Zone - 3 Sand CEMENT (Ultratech OPC-53) Kg/m 3 114 114 GGBFS – JSW cement Ltd Kg/m 3 70% 266 266 307 329 347 572 613 644 991 928 879 152 152 0. 75% 0. 40 20 mm - Local source from Bengaluru Kg/m 3 ( 16%) 12. 5 MM - Local Soure from Bengaluru Kg/m 3 (30%) M. SAND - Local source from Bengaluru Kg/m 3 (53%) WATER Kg/m 3 ADMIX. Fosroc Auramix 450 PC based admixture % by weight of cement W/Cementitios Ratio www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Trial Results Trial N 0. 1 Zone - I Sand Trial. 2 Zone – II Sand Trial. 3 Zone -III Sand Initial Flow in mm 640 620 650 Flow after 60 mins 620 640 Flow after 120 min 600 620 Theoretical Density 2402 Fresh Wet Density 2413 2427 2418 Workability COMPRESSIVE STRENGHT IN MPA 3 days 16. 18 16. 1 15. 75 7 day 29. 30 31. 50 29. 00 28 days 39. 20 40. 10 39. 50 www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Trial No. I Zone I sand n Results obtained using Admixture Fosroc Auramix 450 n Workability Time in min 0 45 Flow in 120 mm Slump/flow in mm 640 620 600 700 600 500 400 300 200 100 Series 1 0 www. fosroc. com 50 100 150 linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Trial No. II Zone II sand n Results obtained using Admixture Fosroc Auramix 450 n Workability Time in min 0 45 Flow in 120 mm Slump/flow in mm 620 620 700 600 500 400 Series 1 300 200 100 0 www. fosroc. com 50 100 150 linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Trial No. III Zone III sand n Results obtained using Admixture Fosroc Auramix 450 n Workability Slump/flow in mm 650 640 620 Time in min 0 45 Flow in 120 mm 700 600 500 400 Series 1 300 200 100 0 www. fosroc. com 50 100 linkedin/company/fosroc 150 Fosroc-International. Limited plus. google. com/+fosro c/

Live Demonstration Trial 1 – Zone 2 Trial 2 – Zone 3 Trial 3 - Zone 1 www. fosroc. com linkedin/company/fosroc Fosroc-International. Limited plus. google. com/+fosro c/

Thank you Address Fosroc Chemicals (India) Pvt Ltd Sapthagiri Palace, No 38 12 th Cross CBI Road, Ganganagar North Bangalore 560 032 Karnataka State, India www. fosroc. com Phone & Fax Phone : +91 80 4252 1900 Fax : +91 80 23551510 Email: enquiryindia@fosroc. com linkedin/company/fosroc Fosroc-International. Limited Social Media plus. google. com/+fosro c/