Bond strength of rebars in cement stabilised rammed earth

Lepakshi, R and Venkatarama Reddy, BV (2020) Bond strength of rebars in cement stabilised rammed earth. In: Construction and Building Materials, 255 .

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Abstract

Rammed earth construction involves compacting processed soil in progressive layers inside a rigid formwork. Rammed earth structural elements experience bending stresses under lateral loads such as wind and earthquake loads. The flexural strength of cement stabilised rammed earth (CSRE) walls is low. Reinforcing the rammed earth will improve the flexural strength of rammed earth to resist lateral loads. There is hardly any information on the bond strength of rebars embedded in CSRE matrix. There is a need to examine the bond developed between rebar and CSRE matrix. This paper focuses on determining the bond strength between rebar and CSRE; establish bond force – slip relationships for reinforced CSRE. The variables considered in the study included two dry densities (1800 and 1900 kg/m3), two cement contents (7 and 10) and three types of rebars. The CSRE cubes embedded with different types of rebars were tested for pullout loading under two testing conditions (dry and wet). The bond strength of rebars in CSRE matrix was found to be greatly influenced by the dry density of the CSRE and the type of reinforcement. The bond strength of deformed rebars is higher than the plain rebars irrespective of the specimen density. © 2020 Elsevier Ltd

Item Type:	Journal Article
Publication:	Construction and Building Materials
Publisher:	Elsevier Ltd
Additional Information:	Copy right for this article belongs to Elsevier Ltd
Keywords:	Bending strength; Bond strength (materials); Cements; Reinforcement, Bending stress; Cement content; Earthquake load; Lateral loads; Rammed earth; Stabilised rammed earths; Structural elements; Testing conditions, Rebar
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	04 Nov 2020 11:55
Last Modified:	04 Nov 2020 11:55
URI:	http://eprints.iisc.ac.in/id/eprint/65571

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