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- W2523908051 abstract "The use of self-compacting concrete (SCC) can facilitate the placement of concrete in congested members and in restricted areas. Given the highly flowable nature of such concrete, care is required to ensure adequate stability. This is especially important in deep structural members and wall elements where concrete can segregate and exhibit bleeding and settlement which can result in local structural defects that can reduce mechanical properties. This paper aims at investigating the properties of hardened SCC and the bond with reinforced bars. In this study, the hardened properties of SCC containing limestone powder or ground granulated blast slag were experimentally investigated and compared with those of ordinary concrete. The water-binder ratios of SCC ranged between 0.37 and 0.38. Two optimised SCC mixes with slump flow values greater than 650 mm and one reference mix were cast. Several tests, such as slump flow, L-box, Orimet, J-Ring, were carried out to obtain the properties for flowability and workability of fresh concrete. No compaction was used for the SCC mixes, while the reference mix received thorough internal vibration. The mechanical properties of hardened concrete were also investigated in terms of compressive strength and splitting tensile strength and the specimens were prepared to evaluate the surface settlement, bleeding and shrinkage. The bond with reinforcement bars was investigated for two types of diameter bar. Bond strengths were also determined for reinforcing bars embedded in concrete according to the Rilem test specification." @default.
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- W2523908051 date "1999-01-01" @default.
- W2523908051 modified "2023-09-27" @default.
- W2523908051 title "Hardened SCC and its bond with reinforcement" @default.
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