1. Introduction
When constructing concrete structures, fresh concrete must be
properly placed and consolidated to obtain goodhardened properties and
durability of the concrete. However, appropriate placement and
consolidation are not always achievable with ordinary concretes, even
when placed by skilled laborers, and a lackof skilled laborers is a major
concern in the construction industry. To resolve these problems, the
concept of and a prototype for self-compacting concrete (SCC) was
developed in Japan in 1988 [1]. The prototype performedsatisfactorily
in three stages of concrete preparation. Specifically, the SCC (i) was
self-compactable during the fresh stage, (ii) did not exhibit initial defects
during the early stage, and (iii) afforded protection against external
factors after hardening [2].
1. Introduction
When constructing concrete structures, fresh concrete must be
properly placed and consolidated to obtain goodhardened properties and
durability of the concrete. However, appropriate placement and
consolidation are not always achievable with ordinary concretes, even
when placed by skilled laborers, and a lackof skilled laborers is a major
concern in the construction industry. To resolve these problems, the
concept of and a prototype for self-compacting concrete (SCC) was
developed in Japan in 1988 [1]. The prototype performedsatisfactorily
in three stages of concrete preparation. Specifically, the SCC (i) was
self-compactable during the fresh stage, (ii) did not exhibit initial defects
during the early stage, and (iii) afforded protection against external
factors after hardening [2].
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