Modified cement composites for protection against microbial induced concrete corrosion of marine structures

Antimicrobial concrete for smart and durable infrastructures: A review

“…Besides above, researchers have also investigated antimicrobial effects of antimicrobial concrete towards some other commonly microbes threatening concrete. For example, Umar et al [36] evaluated the antimicrobial activity of four types of semi-circular modified cement composite specimens using Serratia marcescens collected from seashore and then isolated from microbe samples. The results showed that cement composites admixed with sodium nitrite-based inhibitor performed better with the least percentage increment of total viable count at the end of 144 h as compared to the cement composite with styrene acrylate copolymer, with acrylic polymer, and cement composite without any admixture, respectively.…”

“…However, the strength of concrete will be impaired when the contents of zinc oxide and dodecyl dimethyl benzyl ammonium added in concrete are more than 0.05% [65] , [76] . Umar et al [36] investigated the strength development of four types of cement composite modified with polymer/added inhibitor at the age of 7, 21, and 28 days. The results showed that compressive strength of cement composite admixed with sodium nitrite-based inhibitor is increased by 26% (28 days) with respect to that of cement composite without any admixture, and higher than cement composite prepared with styrene acrylate copolymer and acrylic polymer, as shown in Fig.…”

“…

Fig. 8 Comparison of compressive strength of (SAR denotes styrene acrylate copolymer, AR denotes acrylic polymer and SN denotes sodium nitrite) [36] .

…”

“…Quaternary ammonium compounds (Quats) have been used as antimicrobial agents for a long time, and only recently they have been reported to be effective as algaecides [11] , [16] , [19] , [34] . Intentionally, considering the severe consequences caused by microbial induced corrosion of concrete, considerable attention has been paid to find effective antimicrobial agents to admix into concrete in order to fight against Thiobacill [3] , [23] , [35] , [36] . For instance, Shook and Bell [37] reported that ConShield, added into concrete during the mixing stage, showed high sterilizing rate and stable bactericidal effect against Thiobacillus bacteria.…”

Review on Microbially Influenced Concrete Corrosion

“…Chemical, physical, mechanical and biological corrosions are the common types of concrete deterioration [ 4 ]. Among them, microbial corrosion is one of the most significant causes of the deterioration of concrete sewers [ 5 ].…”