Acceptance Criteria and Prerequisites for Full Depth Reclamation (FDR) Using Cement Stabilization and Additive in Uttar Pradesh
Learn about the acceptance criteria for commercial chemical stabilizers and additives in Full Depth Reclamation (FDR) projects as per MoRTH guidelines. Understand the prerequisites for acceptance, including accreditation requirements and job mix design considerations. Find out the details required from contractors/additive suppliers for road construction projects involving FDR.
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Presentation Transcript
Full Depth Reclamation (FDR) using Full Depth Reclamation (FDR) using Cement Stabilization and Additive Cement Stabilization and Additive [Acceptance criteria of Commercial Chemical [Acceptance criteria of Commercial Chemical Stabilizer(CCS) Stabilizer(CCS)- - Additive] Additive] Uttar Pradesh Rural Road Development Agency
The SBD of FDR States about the acceptance of additive as follows: The stabilizer/Additive/Commercial Chemical Stabilizer's acceptability is to be examined in light of the provisions in MoRTH circular dated 14.12.2020 and IRC SP-89 (Part-II)-2018, important parts of which are as follows: The clause 8.3 and 09 of the circular dated 14.12.2020 of MoRTH state that-
8.3- It is clarified that any new alternate, material & technology that has been accredited by IRC, and falling under IRC: SP-89(Part II), will not require further accreditation, and will henceforth fall under approved, alternate, material and technologies. 9- It is clarified that the material /technology for which Codes, Standards, Specifications, Guidelines etc. of IRC, MoRTH, AASHTO, ASTM, Euro Code and British Codes are available shall not be treated as new / alternate material / technology. The stabilizer/Additive/Commercial Stabilizer's must be accredited by IRC or equivalent organizations, as mentioned above. Chemical
Prerequisites for Acceptance of CCS Prerequisites for Acceptance of CCS (Additive) (Additive)
The job mix design is an important factor for FDR. This varies with soil type also. So, the company bidding for the FDR Project, if does not have its own additive, will be required to have an agreement with the additive company either prior or post to bidding. If contractor opts to have an agreement with the additive company post to bidding, then the contractor will have to submit the said agreement as per direction of employer. The Additive Company should have experience in the field of road construction using New Technology Full Depth Reclamation (FDR) in-situ stabilization and additives , either in India or Outside India. It will have to support for mix design, execution and supervision of the soil stabilized layer stabilization with cement
The PIUs should seek the following details of additive from the contractor/additive supplier: Brand Name of the Additive Manufacturer Name of Additive Manufacturer Address, Email Id and Contact Number Physical Form of Additive Whether Liquid, Granular or Powder form Status of Accreditation (Whether IRC or as per MoRTH)
Status of Accreditation (Whether IRC or as per MoRTH AASHTO, ASTM, Euro Code or British Code) Proof of Accreditation Toxibility/Leaching Test Report
As success of the FDR depends on the judicious selection of the Additive, the Additive should be accepted carefully which is likely to be used in reclamation.
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