1Shivam Concrete Technology & Consultancy Pvt. Ltd 5A One Stop Solution ProviderFor Enhancement ofServiceability and Life of Structure
2IntroductionVision: To be a leader in providing all possible solution in field of Enhancing Serviceability and Life for all type of structuresMission: To satisfy client by providing effective solutions through continuous innovative and faster (In – time) execution of project through strong planning AND being quality consciousAbout Us:Shivam Concrete Technology & Consultancy Pvt. Ltd. is realization of dream of Mr. Laxmikant Thakkar (Managing Director) to increase life and utility of structure by providing best possible treatments for strengthening/rehabilitation based experience and scientific analysis. At Shivam Concrete Technology we thrive to give best services in most professional way. We provide services ranging from Visual Inspection to Modern Testing (NDT), Drafting strengthening/rehabilitation proposals to carrying out the rehabilitation work.
3IntroductionIt was very modest beginning of Shivam Concrete Technology & Consultancy Pvt. Ltd. It started with proprietor concern "SHIVAM CONSTRUCTION'. In early days it use to carry out repair works of Bridges, Aqueduct & Overhead tank by Guiniting. But following His dreams and Vision of providing best service it is now change it focus to become one stop solution provider for all rehabilitation needs of structure.Now it is has been providing best treatments e.g. Polymer Modified Cement Mortar, Fibre reinforced repair mortar, Polymer Cement Grout, Wrapping, Corrosion Inhibiting, etc. Till date it has carried rehabilitation of over 90 bridges under Shivam Construction for various agency e.g. National Highway Authority of India and State Government by serving Clients like L&T, IRB, NCC, Sadbhav Engineering, Dosal, Patel Engineering, M/s Khurana and many more.As of now we have inspected and design rehabilitation proposal for more than 50 bridges for L&T (NHAI Project), IRB (NHAI Project) and Public Works Departments. And carried out testing NDT testing for over 35 bridge and Bridge Load test for 16 bridges for L&T, Madhucon Projects Ltd., C V Kand Consultants and PWD.33
5Our Role We shoulder the responsibility and be a part of the Team SCTCPLDesigning Rehabilitation ProposalGetting Approval of Rehabilitation Scheme from ICTesting of New and Existing StructuresCost EstimationExecutionResolving Technical IssuesSpeedy and Quality WorkCommitted to complete work in timeWhich Saves Time and Money5
7StrengthProvide solution to all the needs of rehabilitation and strengthening of various structures (consultancy to execution)Strong execution capability along with in depth planning (Has completed rehabilitation of 4 major bridges and 4 minor bridges, spread across distance of 50 kms, in record time of 2.5 months. Replaced the 6 bearings of Major bridge within 7 days)Vast Experience of rehabilitation of over 90 bridges and 15 overhead tanks and are into rehabilitation business for last 18 yearsHas capability to carry out work in most changeling conditions as well as carrying out most changeling workProvides highest customer satisfaction (Approaches the work with equal focus on the needs of customer/client and structure)Owns enough equipments, machineries and labour force to simultaneously carry out rehabilitation of more than 2 major bridges
8AccomplishmentsAt Shivam Concrete Technology, we are dedicated to take challenging task and complete it in time. Following exemplify the same:Took are rehabilitation work of old Tapi bridge, where 20ft of flowing water and height of 60ft presented challenging environment to work. The work was entrusted by UP State Bridge CorporationCompleted difficult task of rehabilitation of 8 bridges in 2.5 months for Sadbhav Engineering. It help them to complete the project in timeCompleted most challenging task of rehabilitation a Span and bearing replacement of Balaram Bridge in 20 days (which normally takes 2 months). It was critical for completing the project in timeHelped client with technical assistant to save bridges which were to reconstructed, hence saving money and timeCompleted rehabilitation of Banas Bridge (approx length of 600mts) in 3 months where each span’s height was 10 mts.
9Quality….Our focus is to satisfy client by providing high standard quality of work. We ensure quality by following international & national standards and using high quality of raw materials, following is the list of it:Standards:IRC SP 37IRC SP 40IRC SP 51EN 1504Guide to Concrete Repair and Protection (Australian)Member of International Concrete Repair InstituteRaw Material Suppliers:FosrocBASFAtul (formerly known as Ciba Atul)BoschWe have library of over 400 books, journal, case studies, seminar & codes9
10Served…. L & T IRB Infrastructure Developers Ltd. Nagarjuna Construction Company (NCC)Dodsal Private LimitedSadbhav Engineering LtdU P State Bridge Corporation LtdLG E & C – Patel J/VMadhucon Projects Ltd.D R Agarwal Infracon Pvt. LTD.M/S Harcharan Singh & Co.Apollo Hospital (L&T)Public Works Department, Gujarat State10
11Projects Completed (Consultancy) Bridges:Condition survey of 6 existing bridges of Palanpur – Swaroopganj Section, NH – 14 for L&TCondition survey of 32 existing bridges of Bhaurch – Surat Section, NH – 8 for IRB infrastructureCondition survey of Borim bridge on Zurai river in Goa for CV Kand Consultants for NHAICondition survey of Major bridge at Seoni in Madha Pradesh for Sadbhav Engineering for PWDCondition survey of 6 bridges of Gujarat State Highway for PWDCondition survey of various bridges and aqueducts for PWD, GujaratBuildings:Condition survey of fire damaged Warehouse for Conchem Pvt. Ltd.11
12Projects Completed (Testing) New Bridges:- Quality AssuranceNDT Testing for quality assurance of concrete work of all newly constructed bridges of Palanpur – Swaroopganj Section, NH – 14 for L&TBridge Load testing for quality assurance of 14 newly constructed bridges of Palanpur – Swaroopganj Section, NH – 14 for L&TBridge Load testing for quality assurance of 2 newly constructed bridges of Jaipur – Agra Expressway, NH – 11 for Madhucon Projects LtdExisting Bridges:- Strength and Condition AssessmentNDT Testing for Strength and Condition Assessment of 6 existing bridges of Palanpur – Swaroopganj Section, NH – 14 for L&TNDT Testing for Strength and Condition Assessment of existing Borim bridges at Goa for C V Kand Consultants Pvt. LtdNDT Testing for Strength and Condition Assessment of 4 existing bridges of Gujarat State Highway for Public Works Department (PWD)12
13Projects Completed (Rehab) Palanpur to Swaroopganj Section, NH14Strengthening and rehabilitation of various bridges for L&TEast West Corriodor, Package VIRehabilitation of various bridges for DIC – NCC Joint VentureEast West Corriodor, Package VRehabilitation of various bridges for Jilin - Sadbhav Joint VentureEast West Corriodor, Package IIIRehabilitation of various minor bridges for DIC – NCC Joint VentureSurat Manor Tollway project, Package IRepair of bridges (Wanki, Bam, Mirchholi, Kha, Rayam, Mindhola, Kaveri, Kharera & Ambica) for Dodsal Private LtdSurat Manor Tollway project, Package IIRepair and rehabilitation of existing bridges for LG E&C – Patel (J/V)Repair & Rehabilitation work of existing Tapi River Bridge for UP State Bridge Corporation Ltd13
14Projects Completed (Rehab) Public Works Department Gujarat StateFlyover to Petrochemical from NH 8 near village Ranoli (Vadodara R&B Department)Purna River Bridge (Navsari R&B Department)Auranga River Bridge (Navsari R&B Department)Tan River Bridge (Navsari R&B Department)Zerva River Bridge (Vadodara R&B Department)Aani River Bridge (Vadodara R&B Department)Orsang River Bridge (Vadodara R&B Department)Various aquaducts on Ukai & Damang ganga L.B.M.CSpecial Repairs to Earthquake affected buildings (Bhuj, Ahmedabad & Bhachau) for Garrison Engineers, Indian Army14
15Apollo Hospital(Case Study) BRIEF HISTORY:Apollo Hospital near Gandhinagar is having Cardic Treatment FacilitiesHospital Construction’s work was awarded to L&THospital was having six floor to be constructedInitially Helipad was designed on land in front of hospitalLater it decided to located Helipad on the terraceHence there need of strengthening (increase size) footing and columns of 1st two floorStrengthening work was awarded to us.
16Tapi Old Bridge (Case Study) Apollo Hospital(Case Study)METHODOLOGY FOR REPAIR:Existing foundation was openedAdditional reinforcement was tie to existing after exposing the later by chipping out themAnd concreting of requisite size was carried outTop surface of column was roughened and shear anchor was provided with use approved chemicalAdditional reinforcement was tied to the existing square column (600mm*600mm) to make it roundReinforcement from footing were extended to ground floor and from ground floor to 1st floor without disturbing existing beams on four side of columnsThis reinforcement were covered by shortcerting of 43 MPa Material
17Tapi Old Bridge (Case Study) BRIEF HISTORY:The bridge was constructed by Sir Sayajirao GaekwadThis ia an old existing bridge having 13 spansEach span has a length of 23 Mts. And carriage way of 5.6 Mts.The existing bridge is a balance cantilever and a two girder “T” typeThe bridge since its inception was never undertaken for any minor or major repairs
18Tapi Old Bridge (Case Study) CONDITIONS OBSERVED PRIOR TO REPAIR:Riding surface was badly damaged at expansion jointsSome portions of slabs at expansion joints and cross girder at that points were heavily damagedRailing of the bridge was also badly damagedLeaching and spalling of concrete was observed at the bottom of girdersSeveral cracks were observed in main girders
19Tapi Old Bridge (Case Study) REASON OF DAMAGES:Due to deep water in Tapi river and pier at height of 50 to go ft above water level, it was not possible to make scaffold from ground level (GL) which is 20 ft below water levelTherefore inspection of bridge damages and diagnosis was not possible and it was neglected for a long time and was open for traffic which detoriated the bridge very badly
20Tapi Old Bridge (Case Study) METHODOLOGY FOR REPAIR:Bituminous wearing coat and R.C.C wearing coat were removed by jack hammer using compressed airAll plates put on expansion joints were removedStudy of damaged portion at the point of expansion joints and cross girders were carried outOld cross girders were replaced by putting new cross girders with steel and concrete insituBroken portion of slab was recasted after welding extra Re-Bar as per designDesigned expansion joints, finger type were installed as per specifications
21Tapi Old Bridge (Case Study) METHODOLOGY FOR REPAIR:Hanging platform for scaffold work was erected from the top of the slabRemoval of leached, spalled, honey combed concrete surface was done manually and by Mechanical chippersSurface preparation was done by wire brushing and applying bond coat of Polymer Modified Cement (PMC) slurry along with coating of Re-Bar with PMC bond CoatExtra steel Re-Bar was added to original Re-Bar whose diameter was below 80% of original diameter and were coated by PMC slurry bond coatPMC mortar was applied to fill hollows and cavities manually with Masons and finished to match the existing surface
22Tapi Old Bridge (Case Study) METHODOLOGY FOR REPAIR:For repairing cracks V-Groove was made by mechanical cutter and filled with Epoxy mortarAnd then wholes of 200mm depth were drilled at a distance of 300mm on both sides of the girderWith help of nipples low viscosity Epoxy Grout was grouted from top of the slab with compressed air and Epoxy pumpExisting damaged R.C.C parapet was repaired using Polymer Modified Cement (PMC) MortarProfile corrective course of PCC was laid on the top of the slabWater spout were fitted as per site requirementBituminous mecadum leveling course was laid on the top and bridge was opened for traffic