Durability of proprietary cementitious materials for use in wastewater transport systems

Saricimen, H.; Shameem, Mohammed; Barry, M.S.; Ibrahim, Mohammed; Abbasi, T.A

doi:10.1016/s0958-9465(02)00082-3

Cited by 46 publications

(18 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lower levels of C 3 A were noted by other researchers [16,29] in reducing the harmful effects of exposure to sodium sulfate. In using cement pastes in their analysis however, Gollop and Taylor neglected the effects of the aggregate-paste interface previously considered important in analysing a sulfate / sulfuric acid attack [49,60,61].…”

mentioning

confidence: 62%

“…Occurrences of concrete degradation in these structures have been recorded in a limited fashion in aeration tanks [15], in septic tanks and pumping stations [16] and the underside of concrete slabs and in primary influent channels [17]. The latter two sources both make reference to the fact that corrosion has been observed just above the waterline.…”

Section: Characterising the Wastewater Environmentmentioning

confidence: 99%

“…The hydrogen sulfide initially formed is found in its dissolved liquid form but for this poorly soluble compound to contribute to the concrete deterioration process it must leave the wastewater and enter a gaseous phase. The normal pH of sewage is slightly acidic and in the range pH 5-6 but when this begins 7 to lower in conjunction with turbulent water (often found in sewer pipes or associated with some wastewater treatment processes), the H 2 S escapes and collects in the atmosphere above the water level [4,16,33]. A thin layer of moisture exists on the surface of the concrete pipe exposed to the atmosphere and it is into here the hydrogen sulfide is gas is dissolved.…”

Section: Sulfate Reducing Bacteriamentioning

confidence: 99%

See 2 more Smart Citations

Biochemical attack on concrete in wastewater applications: A state of the art review

O’Connell

McNally

Richardson

2010

Cement and Concrete Composites

220

View full text Add to dashboard Cite

Publication informationCement and Concrete Composites, 32 (7) AbstractThe costs associated with the provision and maintenance of drinking water and wastewater infrastructure represents a significant financial demand worldwide. Maintenance costs are disproportionately high, indicating a lack of adequate durability. There remains a lack of consensus on degradation mechanisms, the performance of various cement types, the role of bacteria in the corrosion process associated with wastewater applications and testing methodologies. This paper presents a review of the literature, outlining the various research approaches undertaken in an effort to address this problem. The findings of these varying approaches are compared, and the different strategies employed are compiled and discussed. It is proposed that a key step in advancing the understanding of the associated deterioration mechanism is a combined approach that considers the interaction between biological and chemical processes. If this can be achieved then steps can be taken to establishing a performance-based approach for specifying concrete in these harsh service conditions.

show abstract

mentioning

confidence: 62%

Section: Characterising the Wastewater Environmentmentioning

confidence: 99%

Section: Sulfate Reducing Bacteriamentioning

confidence: 99%

See 1 more Smart Citation

Biochemical attack on concrete in wastewater applications: A state of the art review

O’Connell

McNally

Richardson

2010

Cement and Concrete Composites

220

View full text Add to dashboard Cite

show abstract

“…Pozzolan contains silica that react with calcium hydroxide in concrete to form extra calcium silicate hydrates compound and diminish calcium hydroxide [7], further strengthening the concrete due to increase of C-S-H compound and making it stronger, denser, and durable during its service life. Many researches on the performance of concretes containing pozzolan in sulfate solutions have been performed [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of natural pozzolan on concrete durability

Merida¹,

Kharchi²

2017

Pressacademia

View full text Add to dashboard Cite

Sulfate attack and its effects are important from both scientific and industrial viewpoints. It is perceived that cements containing pozzolan have better performance in sulfate solutions, since the pozzolanic reactions reduce the quantity of calcium hydroxide and increase calcium silicate hydrate. This paper investigates the physical and mechanical properties of concretes made by blended cement containing Algerian natural pozzolan of volcanic origin, and Portland cement. In order to better determine the pozzolanic effect of the pozzolan addition in the concrete, the analysis of the experimental results of the effect of the partial replacement of the cement by the natural pozzolan showed that it contributes positively to the improvement of its mechanical characteristics, its durability with respect to the permeability to the chlorine ions, the ultrasonic pulse velocity, the compressive strength as well as the sulphate resistance. The present study confirms the pozzolanic reactivity of the natural pozzolan used

show abstract

“…EPA, 1991), Europe (Diercks, Sand, & Bock, 1991), the Middle East (Saricimen, Shameem, Barry, Ibrahim, & Abbasi, 2003), South Africa (Alexander & Fourie, 2011), and Australia (Parker, 1951;Thistlethwayte, 1972). A 1991 EPA report estimated that the repair or replacement of 25 miles of corroded concrete sewer pipe in Los Angeles County alone would cost $130 million (U.S. EPA, 1991).…”

Section: Introductionmentioning

confidence: 99%

Review of Microbially Induced Corrosion and Comments on Needs Related to Testing Procedures

House¹,

Weiss²

2014

Proceedings of the 4th International Conference on the Durability of Concrete Structures

View full text Add to dashboard Cite

Concrete is the most widely used material for the construction of the wastewater collection, storage, and treatment infrastructure. The chemical and physical characteristics of hydrated Portland cement may make it susceptible to degradation under highly acidic conditions. As a result, some concrete wastewater infrastructure may be susceptible to a multistage degradation process known as microbially induced corrosion (MIC). MIC begins with the production of aqueous hydrogen sulfide (H 2 S (aq) ) by anaerobic sulfate-reducing bacteria present below the waterline. H 2 S (aq) partitions to the gas phase where it is oxidized to sulfuric acid by the aerobic sulfur-oxidizing bacteria Thiobacillus that resides on concrete surfaces above the waterline. Sulfuric acid then attacks the cement paste portion of the concrete matrix through decalcification of calcium hydroxide and calcium silica hydrate coupled with the formation of expansive corrosion products and loss of coarse aggregate. The attack proceeds inward, resulting in reduced service life and potential failure of the concrete structure. There are several challenges associated with assessing a concrete's susceptibility to MIC. First, no standard laboratory tests exist to assess concrete resistance to MIC. Straightforward reproduction of MIC in the laboratory is complicated by the use of microorganisms and hydrogen sulfide gas. Physicochemical tests simulating MIC by immersing concrete specimens in sulfuric acid offer a convenient alternative but do not accurately capture the damage mechanisms associated with biological corrosion. Comparison of results between research studies is difficult due to discrepancies that can arise in mixture design, specimen preparation, and experimental methods even if current ASTM standards are followed.

show abstract

Durability of proprietary cementitious materials for use in wastewater transport systems

Cited by 46 publications

References 4 publications

Biochemical attack on concrete in wastewater applications: A state of the art review

Biochemical attack on concrete in wastewater applications: A state of the art review

Effect of natural pozzolan on concrete durability

Review of Microbially Induced Corrosion and Comments on Needs Related to Testing Procedures

Contact Info

Product

Resources

About