Sustainability by Using Zero Wash-out Admixture for Large Underwater Concreting Project in India

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Title: Sustainability by Using Zero Wash-out Admixture for Large Underwater Concreting Project in India

Author(s): Surendra Manjrekar and Ishita Manjrekar

Publication: Special Publication

Volume: 285

Issue:

Appears on pages(s): 1-8

Keywords: under water concreting, anti-washout admixture, admixture, mix design

Date: 5/1/2012

Abstract:
This paper maps the development of Anti-washout admixtures for the first time on the Indian subcontinent. Anti washout admixture was required to be used for the construction of a weir for the SriSalem Dam across the Krishna River in Andhra Pradesh, India. The project required 30000 cubic meters of concreting to be done under water without the erection of a cofferdam and the project cost was estimated to be about $5.6 million. The consultants were SNC Lavelin, Canada and the contractors were Patel Engineering, India. Since there were no manufacturers of anti washout admixture in India, this was a significant development from Sunanda Speciality Coatings Pvt. Ltd.’s lab involving over 100 trials that culminated in about 90000 liters of the admixture being used in the project.