Bond strength and development length of steel bar in unconfined self-consolidating concrete

Clay as a Sustainable Binder for Concrete—A Review

“…The fresh-state properties of cementitious materials affect today's construction world and the hardened properties of the material in service [86], generating high requirements of fresh cement paste properties, such as workability [87]. Ease of placement, increasing the filling ability, using dense reinforcement in high-congested concrete members, and reducing the cost of vibration in the construction industry are the advantages of using concrete with high workability [88,89]. A highly workable concrete with superior segregation resistance needs proper flowability and adequate rheological properties.…”

A critical review of the effect of concrete composition on rebar–concrete interface (RCI) bond strength: A case study of nanoparticles

“…However, results reported by the literature show a different trend in which powder types and content, aggregate types and contents and also admixture can significantly change the bond properties [36]. Accordingly, Mousavi et al presented some models for predicting the maximum bond strength of rebar embedded in self-consolidating concrete [37][38][39]. They considered the content of fine aggregate, cementitious materials, and admixtures in the equations.…”

“…2). Changing each of these factors in both fields of the quality and the quantity can considerably change rebar-concrete interface properties [37,40,41]. In this field, recently, Mousavi et al [42] confirmed the hypothesis that type and dosage of the used powder in concrete can change the rebar-concrete bond strength, and improve the damaged layers around the rebar caused by the pre-cracked phenomenon.…”

“…The main question is that there is no specific regulation, code consideration, and research paper to explain the reason for these observations for every type of concrete. Regarding SCC, Mousavi et al [37][38][39] distinguished this research gap and proposed some calibrated bond model, which is summarized in Table 1. Their results indicate that the content of fine aggregate, powder, and superplasticizer can affect the bond properties of rebar embedded in SCC ( Fig.…”

Reinforcement mechanism of rockbolt system for underground excavation

“…An important assumption in Farmer's model is that the bond stress is proportional to the relative bond slip. Li and Stillborg (1999) Some experiments to test the bond behaviour at reinforced bar and concrete are also reviewed to verify the model as shown in Figure 2-5 (Ko et al, 2014;Lee et al, 2016;Mertoğlu et al, 2016;Mousavi et al, 2017). According to the experimental results, a trilinear bond-slip model is proposed and widely used in recent year (Benmokrane et al, Chapter 2 Literature review 13 1995; Moosavi et al, 2005;Ren et al, 2010;Blanco Martí n et al, 2011;Deb and Das, 2011;Ma et al, 2013;Ma et al, 2014;Zhandarov and Mä der, 2016).…”