TY - JOUR
T1 - Nitrite admixed concrete for wastewater structures
T2 - Mechanical properties, leaching behavior and biofilm development
AU - Li, Xuan
AU - O'Moore, Liza
AU - Wilkie, Simeon
AU - Song, Yarong
AU - Wei, Jing
AU - Bond, Philip L.
AU - Yuan, Zhiguo
AU - Hanzic, Lucija
AU - Jiang, Guangming
PY - 2020/2/10
Y1 - 2020/2/10
N2 - This study systematically investigated the impacts of calcium nitrite addition on the mechanical properties and biofilm communities of concrete-based wastewater infrastructures using sulfate resistant cement through standard tests and DNA sequencing, respectively. The results revealed that setting time and water demand for normal consistency were reduced, but slump, drying shrinkage, and apparent volume of permeable voids increased with calcium nitrite dosage up to 4% weight of cement. The cumulative leached fraction of nitrite, 28-day compressive strength and biofilm communities were not significantly affected by calcium nitrite dosages. The addition of calcium nitrite into concrete is environmentally friendly to wastewater infrastructures. © 2019 Elsevier Ltd.
AB - This study systematically investigated the impacts of calcium nitrite addition on the mechanical properties and biofilm communities of concrete-based wastewater infrastructures using sulfate resistant cement through standard tests and DNA sequencing, respectively. The results revealed that setting time and water demand for normal consistency were reduced, but slump, drying shrinkage, and apparent volume of permeable voids increased with calcium nitrite dosage up to 4% weight of cement. The cumulative leached fraction of nitrite, 28-day compressive strength and biofilm communities were not significantly affected by calcium nitrite dosages. The addition of calcium nitrite into concrete is environmentally friendly to wastewater infrastructures. © 2019 Elsevier Ltd.
KW - Biofilm
KW - Calcium nitrite
KW - Concrete
KW - Sewer
KW - Sulfate resistant cement
UR - http://www.scopus.com/inward/record.url?scp=85074145031&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85074145031&origin=recordpage
U2 - 10.1016/j.conbuildmat.2019.117341
DO - 10.1016/j.conbuildmat.2019.117341
M3 - RGC 21 - Publication in refereed journal
SN - 0950-0618
VL - 233
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 117341
ER -
