LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Durability and microstructure of coral sand concrete incorporating supplementary cementitious materials

Photo by k_yasser from unsplash

Abstract This paper was investigated the durability performances of coral sand concrete (CSC) production by using porous coral sand aggregate and supplementary cementitious materials (SCMs) compared to river sand concrete… Click to show full abstract

Abstract This paper was investigated the durability performances of coral sand concrete (CSC) production by using porous coral sand aggregate and supplementary cementitious materials (SCMs) compared to river sand concrete (RSC). The durability properties of CSC were evaluated in terms of chloride penetration, water absorption, drying shrinkage, accelerated carbonation, and sulfate drying-wetting cycle. The results indicated that the CSC exhibited higher drying shrinkage, capillary water absorption, carbonation depths, and a slightly lower later compressive strength compared with RSC. However, porous coral aggregate provided a more rapid early age strength, better resistance to chloride ion penetration, and sulfate drying-wetting cycle than the RSC due to its internal curing. Additionally, the combinations of internal curing and pozzolanic reaction contributed to the microstructure improvement of CSC, which conformed good durability properties of CSC containing SCMs. Moreover, the ecological evaluation demonstrated that the CSC incorporation of SCMs resulted in a significant reduction of CO2 emission.

Keywords: coral sand; sand; supplementary cementitious; durability; sand concrete

Journal Title: Construction and Building Materials
Year Published: 2018

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.