Development and application of concrete using seawater and by-product aggregates

Keisaburo Katano, Nobufumi Takeda, Akira Shimmura, Makoto Hisada, Nobuaki Otsuki

Research output: Contribution to journalConference article

Abstract

Authors developed concrete using seawater as mixing water. A combination of sea water, ordinary portland cement, ground granulated blast-furnace slag, fly Ash, silica fume, and a special chemical admixture containing calcium nitrite was adopted to densify concrete. This concrete is hereafter referred to as “concrete with seawater”. This technology not only improves the performance of concrete but also shortens the material transportation process and reduces cost and CO2 emission from construction work by effective use of seawater when producing concrete in a region where fresh water is not readily available, such as isolated islands and coastal areas. Furthermore, authors developed methods of producing concrete using by-product aggregates such as large uncrushed concrete debris from the earthquake disaster or steel making slag. Especially when using large uncrushed concrete debris, pre-placed aggregate concrete method and post-packed concrete method were adopted to reduce processing time and cost by using as much uncrushed concrete debris as possible. This paper describes practical experiments to which we applied these production methods using seawater and by-product aggregates to build concrete blocks for ports and harbors and a pavement for a steel making plant.

Original languageEnglish
JournalSustainable Construction Materials and Technologies
Volume2016-August
Publication statusPublished - 2016 Jan 1
Event4th International Conference on Sustainable Construction Materials and Technologies, SCMT 2016 - Las Vegas, United States
Duration: 2016 Aug 72016 Aug 11

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)

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