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Title: Early strength development in concrete using preformed CSH nano crystals
Authors: Das S.
Ray, Sonalisa
Sarkar, Sudipta
Published in: Construction and Building Materials
Abstract: The pace of production of pre-cast elements are dependent on the formwork removal time and are governed by early strength gain process of concrete. Conventionally, the production cycle is enhanced either by adopting elevated temperature curing or by the use of commercially available hardening accelerators which often cause durability related problems in concrete. In this work, an attempt has been made to use preformed CSH nano-crystals synthesized from agricultural waste material for early strength development in concrete. Inclusion of such seeding material in concrete can effectively eliminate the nucleation period in the hydration process and can accelerate the early strength development without compromising in the ultimate strength and durability properties. The effectiveness of these preformed CSH seeds on the early age strength gain process has been verified and confirmed by measuring setting time, compressive strength, heat of hydration and by performing X-ray diffraction and thermal analysis. With the addition of CSH seeds, relatively faster precipitation of hydration products and early strength development have been observed. ¬© 2019 Elsevier Ltd
Citation: Construction and Building Materials(2020), 233(): -
Issue Date: 2020
Publisher: Elsevier Ltd
Keywords: Concrete
CSH crystals
Early strength
Hardening accelerator
Heat of hydration
Induction period
ISSN: 9500618
Author Scopus IDs: 57206573847
Author Affiliations: Das, S., Departement of Civil Engineering, Indian Institute of Technology Roorkee, Rookee, 247667, India
Ray, S., Departement of Civil Engineering, Indian Institute of Technology Roorkee, Rookee, 247667, India
Sarkar, S., Departement of Civil Engineerin
Funding Details: The authors would like to thank National Building Construction Corporation ( NBCC ) Limited, New Delhi, India for providing the financial assistance to execute this work.
Corresponding Author: Ray, S.; Departement of Civil Engineering, Indian Institute of Technology RoorkeeIndia; email:
Appears in Collections:Journal Publications [CE]

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