Research on Performance and Microstructure of Sewage Pipe Mortar Strengthened with Different Anti-Corrosion Technologies

Microbiologically Induced Concrete Corrosion: A Concise Review of Assessment Methods, Effects, and Corrosion-Resistant Coating Materials

“…Due to a biogenic acid attack, permeable gaps seen within the matrix may be due to the breakage of the aluminosilicate matrix. The authors of [5] found that the hydration product of corrosionresistant mortar (CY) was loosed and porous after 90 days of corrosion in sulfuric acid solution, which resulted in significant decomposition and destruction.…”

“…In a study by [64], the failure load of FA-GP mortar dropped from 130 KN to 56.7 KN (compressive strength from 50.5 MPa to 22.3 MPa) and from 127 KN to 33.7 KN (compressive strength from 49.3 MPa to 27.9 MPa) in the case of SRPC mortar. Almost half of the compressive strength was lost for mortars with corrosionresistant admixture (CY) when exposed to sulfuric acid with a pH of 2 for 90 days [5]. Based on the mixture type, the relative dynamic elastic modulus (RDEM) of the specimens decreased to 80% to 60% after 112 days of immersion in sulfuric acid with a pH of 0.8 [50].…”

“…The total length of the sewage networks in countries such as the US, the UK, Japan, Germany, and China is 10 times more than the circumference of the earth [4]. Sewage pipes mostly carry organic and inorganic substances, which may be corrosive, resulting in the degradation of concrete [5]. Microbially induced concrete corrosion (MICC) is one of the main processes for the degradation of concrete worldwide causing high economic expenses along with severe health and environmental concerns [6][7][8][9].…”

Enhancement of mechanical properties of high modulus polypropylene grade for multilayer sewage pipes applications

“…Majority of old sewer pipes have been made from brittle rigid materials such as concrete or clay, which fail due to stone impingement or ground movement. Internal corrosion of concrete sewer pipe is caused by sulfuric acid generated by domestic/municipal wastewater, which further weakens the structure and is a severe concern in hot dry climates 1–3 . Traditional sewage systems are also plagued by ground movement and tree root intrusion 4 .…”

“…Internal corrosion of concrete sewer pipe is caused by sulfuric acid generated by domestic/municipal wastewater, which further weakens the structure and is a severe concern in hot dry climates. [1][2][3] Traditional sewage systems are also plagued by ground movement and tree root intrusion. 4 Plastics pipeline systems have been introduced during the early days of plastics, and since, have been refined and developed to become a major material of choice for gas, water, sewage, and industrial pipelines.…”