Effect of bacterial activity on sea concrete by G. A. Khoury

Cover of: Effect of bacterial activity on sea concrete | G. A. Khoury

Published by Health and Safety Executive in London .

Written in English

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Statementauthor G.A. Khoury ; prepared by Techword Services.
SeriesOffshore technology information -- OTI 92 611
ContributionsGreat Britain. Health and Safety Executive., Techword Services.
ID Numbers
Open LibraryOL21687576M
ISBN 100717607569
OCLC/WorldCa32809725

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Activity measurement of bacteria in (cracked) concrete. The bacterial behavior, more specifically the bacterial activity in the crack zone, is of crucial importance, since it essentially governs the biogenic CaCO 3 formation and hence the crack healing efficiency.

In most studies, improved healing efficiency was evaluated indirectly by. Highlights Ureolytic bacteria are capable of CaCO 3 production because precipitation occurs as a by product of common metabolic processes. We studied an overview of Bacteria, their types based on the classification.

The effect of bacteria on various parameters in concrete proves to be beneficial development. Compressive strength, Permerability, Water absorption, Chloride ingression, Cited by: Bacterial concrete is a special type of concrete it has the ability to repair itself autonomously 1.

one another advantage of bacterial concrete is that the introduction of bacteria in concrete also helps in enhancing the properties of concrete in both natural and laboratory conditions the File Size: 1MB.

The effect of different concentrations of bacteria on the concrete is used to found out optimum content in concrete.

It was found that the temperature of bacteria that alive in concrete from-3'c. BACTERIAL CONCRETE AND EFFECT OF DIFFERENT BACTERIA ON THE STRENGTH AND WATER ABSORPTION CHARACTERISTICS OF CONCRETE M.

Raja 2Sekhar1, A. Ramakrishnaiah Student, Dept. of Civil (Structural Engineering and. Experimental results showed crack-healing of up to mm-wide cracks in bacterial concrete but only up to mm-wide cracks in control specimens after days submersion in water.

The effect of water-borne contaminants on the durability of concrete is well-known and cracked concrete is more susceptible to permeation of these contaminants. An approach to autonomic self-healing of such concretes is the utilization of microbiologically-induced calcite-precipitation.

This approach uses the metabolic activity of bacteria and biomineral precursors embedded within the concrete. Completion of bacterial activity a great concern Limited research in the field of MICP Lacks in substantial commercial applications 3.

Types of Microbial Concrete and Various Microbes The widely used microbial concrete for healing the cracks, surface treatment and as a water purifier along with. This approach uses the metabolic activity of bacteria and biomineral precursors embedded within the concrete to form an inorganic material, usually calcite, as the healing compound.

However, bacteria-based healing of concrete creates a number of scientific and engineering challenges at the biology-concrete technology interface. The effect of sea water on concrete was first discussed in by J. Smeaton and L. Vicat. Their two-year examination on the research topic titled “What is the trouble with concrete in sea water” revealed that a large number of concrete structures in sea water in the United States, Canada, Cuba and Parama are exposed to.

when the bacterial activity has consumed it all it increases the durability of steel reinforced concrete constructions. The two self-healing agent parts (the bacterial spores and the calcium lactate-based nutrients) are introduced to the concrete within separate expanded clay pellets mm wide, which.

Preparation of Concrete Samples with Bacteria: Bacterial concrete casted by using ordinary Portland cement mixed with bacterial concentration 10 6 cells/ml of water. Conventional concrete samples were also casted in parallel. The specimens were cured under tap water at room temperature and tested at 7, and 28 days.

bacterial concrete, its effects on concrete properties and describing its merits and demerits. Keywords: Strength, Ductility, Durability, Sustainabile, Crack free.

Shradha Jena is a research scholar in the Department of Civil Engineering (Structural. activity of bacteria in concrete. Among all the influential factors, nutrients for the survival of bacteria in cement mortar is considered in the study.

Compressive strength are determined at various stages of curing to study the influence of bacterial activity in concrete.

Temperature Effect on Various Bacteria Used in Microbial Concrete Medapati Abhinav Reddy U.G. Student, Department of Civil Engineering, SRM University, Kattankulathur, Chennai, India ABSTRACT: Bio-concrete or bacterial concrete is being extensively studied by many researchers to understand and.

bacterial activity has consumed it all it increases the durability of steel reinforced concrete constructions. The two self-healing agent parts (the bacterial spores and the calcium lactate-based nutrients) are introduced to the concrete within separate expanded clay pellets.

Title: Bacteria-Based Self-Healing Concrete: Effect of Bio-agents on the Cementitious Matrix Author(s): Jianyun Wang, Nico Boon, and Nele De Belie Publication: Symposium Paper Volume: Issue: Appears on pages(s): Keywords: bacterial nutrient; precipitation precursor; porous carrier; compatibility; hydration Date: 9/26/ Abstract: In this paper, the influence of the specific.

Bacterial Activity in Different Water Sources: A Sequel Comparative Study Part of the Young Naturalist Awards Curriculum Collection. Young Naturalist Awards. Share. Collect. by Vrinda, Grade 8, Florida - YNA Winner. Hypothesis. In an extension to last year’s project, I hypothesize that bacteria cultured from deep aquifer water is less.

Bacterial have been effectively used for improving the strengths of concrete beams and other structures, which have air gaps and micro cracks. The bacterial Bacillus pasteruil in the concentration of * cells/ml can improve the strength of the concrete by forming a calcite layer in the crack.

Microbially enhanced calcite precipitation on concrete or mortar has become an important area of research regarding construction materials. This study examined the effect of calcite precipitation induced by Sporosarcina pasteurii (Bp M-3) on parameters affecting the durability of concrete or mortar.

An inexpensive industrial waste, corn steep liquor (CSL), from starch industry. The cubes were cured under tap water at room temperature and tested at 1, 7, and 28 days. Preparation of Concrete Samples with Bacteria: Bacterial concrete casted by using ordinary Portland cement mixed with bacterial concentration cells/ml of water.

Conventional concrete samples were also casted in parallel. 3 Autonomous crack repair of bacterial self healing concrete Concrete test specimens were prepared in which part of the aggregate material, i.e. the mm size class, was replaced by similarly sized expanded clay particles loaded with the bio-chemical self-healing agent (bacterial spores x g-1.

which evaluates the effect of bacillus subtilus on compressive strength of concrete, healing of concrete cracks and cost analysis of bacterial concrete.

Keywords-(sustainable development, calcification, cost analysis, economy, maintenance, cost) I. INTRODUCTION Concrete forms a major part of construction which is now a days very easily available.

Abstract - Bacterial concrete or self healing concrete fills up the cracks developed in structures by the help of bacterial reaction in the concrete after hardening. Types of bacteria, its mechanism and preparation of bacterial concrete is discussed. In modern. Moreover, the concrete specimens treated by the medium with B.

sphaericus showed the lowest weight increases per unit area. Rafat Siddique () et al, presented an overview of bacteria, their types based on the classification has been studied.

Even the effect of bacteria on various parameters in concrete proves to be beneficial development. Bruce Ferguson, director of the University of Georgia School of Environmental Design and author of the book Porous Pavements, says that a quarter of a million U.S.

acres are either paved or repaved every year. Impervious surfaces can be concrete or asphalt, they can be roofs or parking lots, but they all have at least one thing in common. The significant activity of bacterial culture in B1 and B2 concrete specimens, biochemically induced calcium carbonate precipitation between cement sand matrix, which in turn increased the load resisting capacity.

Table Split-Tensile strength of conventional and bacterial concrete (N/mm 2) S. Download Bacterial Concrete seminar report, ppt, pdf, Bacterial Concrete Seminar Topics, Abstracts, Full Documentation, Source Code. best effect of self-healing in concrete. One such thought has led to development of very special concrete known as Bacterial concrete where bacteria of bacillus subtilis (JC3) is used and other known as Super absrobant polymer concrete.

The variation in compressive strength with respect to the different dosage was studied. The antibacterial activity of raw sea water varied considerably during incubation of successive inocula ofEscherichia coli, Staphylococcus aureus, andSerratia marinorubra.

In most cases inactivation of second inocula was stronger than that of first ones. However, withS. aureus, contradictory results were obtained also. The bactericidal effect of filter-sterilized sea water was. @article{osti_, title = {Effect of cathodic protection on the activity of microbial biofilms}, author = {Maxwell, S.}, abstractNote = {Impressed current or sacrificial anode systems are used to protect the subsea structures of offshore oil platforms and rigs.

The steel is considered protected when a potential of mV(Cu:CuSO/sub 4/) is achieved, in many cases, the potential is. Concrete degradation may have various te can be damaged by fire, aggregate expansion, sea water effects, bacterial corrosion, calcium leaching, physical damage and chemical damage (from carbonatation, chlorides, sulfates and non-distilled water).This process adversely affects concrete exposed to these damaging stimuli.

T1 - Bacteria-based self-healing concrete: Effects of environment, exposure and crack size. AU - Paine, Kevin. PY - /6. Y1 - /6. N2 - The effect of water-borne contaminants on the durability of concrete is well-known and cracked concrete is more susceptible to permeation of these contaminants.

Bacteria - Bacteria - Bacteria in industry: Anaerobic sugar fermentation reactions by various bacteria produce different end products. The production of ethanol by yeasts has been exploited by the brewing industry for thousands of years and is used for fuel production.

Specific bacteria carry out the oxidation of alcohol to acetic acid in the production of vinegar. Books at Amazon. The Books homepage helps you explore Earth's Biggest Bookstore without ever leaving the comfort of your couch.

Here you'll find current best sellers in books, new releases in books, deals in books, Kindle eBooks, Audible audiobooks, and so much more. A new research project involving researchers from Bath aims to develop novel self-healing concrete that uses an inbuilt immune system to close its own wounds and prevent deterioration.

Some studies have shown that dietary salt supplementation has a positive effect on fish growth performance under freshwater conditi14,15,16, For example, adding salt to the diet of Asian sea bass Lates calcarifer at a level of up to 4% led to better.

irrigation purpose as well as for concrete mixing, curing and washing of aggregates also. Water from stream, river and even sea is also suitable, if it not contain brackish matter.

One of the facts that in arid countries, desalinated water blended with brackish ground water used for concrete making purpose and for making concrete slurry also.

For casting of concrete generally used raw materials are Cement, Fine aggregate (River sand), Coarse aggregate and Water were used.

Additionally Bacteria was used to investigate the effect on properties of concrete. Cement. OrdinarPortland cement were used satisfying all the IS requirements was used in making the concrete.

strength with 9 to 25% when mixing bacterial cells into mortar or concrete [19‐21]. Others mention both positive and negative effects, depending on the bacterial strain, cell concentration or concrete age [22‐23].

Table 1. Different metabolic pathways of bacterial calcium carbonate precipitation [8]. concrete. Thus, this paper is an attempt to define bacterial concrete, types and classification of micro organisms, working of bio concrete as a repair material, advantages and disadvantages of bacterial concrete and applications by literature review are discussed.

Key words: Concrete, Bio Mineralisation, Calcium Carbonate, Bacterial Concrete.In the open ocean, far from the influences of coastal human habitation, sea water still contains huge numbers of microbes.

Coastal areas can contain even greater concentrations. Vast numbers of bacteria and plankton occur both at the surface and in deep ocean waters.

Viruses are entities that require bacteria or other cells in order to make.Top 10 Downloads All time Recent Additions 20 most recent additions Activity by year. Paper of the Day.

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