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Portland Cement Concretes
Published in M. Rashad Islam, Civil Engineering Materials, 2020
Self-consolidating concrete, or self-compacting concrete, (SCC) mixes have a low yield stress, high deformability, good segregation resistance, and moderate viscosity. This type of mix has uniform suspension of solid particles during transportation, placement, and thereafter, until the concrete sets. Without external compaction, the solid particles stay in a suspended condition. SCC flows very easily within and around formwork, obstructions, and corners, as shown in Figure 5.14. It does not require any vibration or tamping after pouring and takes the shape of the mold after hardening. SCC gains its fluid properties from the high proportion of fine aggregate (typically 50%), combined with the superplasticizers and viscosity-enhancing admixtures. SCC is commonly used for heavily reinforced sections and complex shapes of formwork where vibration is difficult.
Introduction
Published in Ganesh Babu Kodeboyina, High Performance Self-Consolidating Cementitious Composites, 2018
Probably a fairly inclusive definition of SCC is presented by the ACI (2007), which states that “Self-consolidating concrete (SCC) is highly flowable, non-segregating concrete that can spread into place, fill the formwork, and encapsulate the reinforcement without any mechanical consolidation.” It also states that, in general, SCC is concrete made with conventional concrete materials and, in some cases, with a VMA. Apart from all other factors recognized in the earlier definitions, this recognizes the importance of the encapsulation of reinforcement, which is an essential prerequisite for the structural performance of reinforced concrete constructions.
Fire resistance of SCC filled square hollow structural steel sections
Published in J.A. Packer, S. Willibald, Tubular Structures XI, 2017
Self-consolidating concrete or self-compacting concrete (SCC) is a relatively new technology in concrete which was developed in Japan in 1980s. The typical characteristic of SCC is that it can be cast and compacted into every part of the mould or frameworks without any segregation by its own weight rather than with the mechanical aid. The use of SCC not only increases the workability of the concrete and reduces the environment impacts (such as noise), but also enhances the quality and durability of the concrete, reduces the construction timetables and costs. In the last decade, SCC has gained more and more widely accepted and applied in Japan, USA, Europe and other countries.
Influence of waste glass aggregates on the rheological properties of self-consolidated concrete
Published in Australian Journal of Civil Engineering, 2020
Ayan Saha, Md. Habibur Rahman Sobuz, Md. Ikramul Hoque, Rashid Mujahid
Self-Consolidating Concrete (SCC) is characterised as concrete that can stream under its very own weight. Designing the idea of SCC by Professor Okamura and Ouchi (2003) had a big influence on the development trade by overwhelming several difficulties related to traditional concrete. A large amount of natural resources requires to produce concrete. The coarse aggregates generally used for concrete products such as granite, brick khoa, stone chips, limestone are quarried from the earth, as well as the fine aggregate such as sand are mainly dug from the rivers and the material required for cement production is also mined from the earth. The disposing solid waste at the landfills every year in which waste glass, is a potential candidate and the ability of the earth to be filled is predictable to be exhausted within a very short period (6–10 years).
Effect of interparticle action on shear thickening behavior of cementitious composites: modeling and experimental validation
Published in Journal of Sustainable Cement-Based Materials, 2020
Xuhao Wang, Alan Lu, Kejin Wang
Self-consolidating concrete (SCC) can flow and fill formwork under its own weight and can reach full compaction without additional consolidation, such as vibration [1]. Applications of SCC in today’s construction industry depend upon its flow properties. Such properties of SCC include flowability, filling ability, and pumpability [2,3].