Use of Bacillus Species Bacteria in Protecting the Concrete Structures from Sulphate Attack- A Review
Journal Title: Journal of Chemical Reviews - Year 2019, Vol 1, Issue 0
Abstract
Deleterious ions in the environment such as sulfates may degrade the concrete structures. The interaction of cement hydration products with these destructive agents contributes to severe durability threat of the concrete structures. External sulfate attack is well-known for causing permanent changes in concrete. Microbially induced calcium carbonate (MICP) precipitation has been considered as a unique technique in enhancing the durability properties of concrete. This review paper discusses the possibility of bio-deposition from MICP process as a barrier in microbial treated concrete against the penetration of sulfate ions in a sulfate- rich environment. The effect associated with chemical and physical sulfate attack is discussed in line with the mechanical properties of cement such as compressive strength whereas microscopic evaluation is based on scanning electron microscopy studies. The shortcomings associated with sulfate ions in cement-based materials and the positive effects of incorporating bacillus species bacteria in sulfate rich areas is discussed. This review found that, MICP can significantly reduce the ingress of sulfate ions in cement-based materials, which results in improving the mechanical properties of the cement mortar/concrete.
Authors and Affiliations
Onesmus Mulwa Munyao, Joseph Karanja Thiong'o, Jackson Muthengia Wachira, Daniel Karanja Mutitu, Mwirichia Romano, Genson Murithi
Keywords
Related Articles
- EP ID EP664528
- DOI 10.33945/SAMI/JCR.2019.4.5
- Views 28
- Downloads 0
Overview of Borophene as a Potential Candidate in 2D Materials Science for the Energy Applications
Energy problem is one of the serious concerns in modern society; therefore, we have to take hastily an effective action. Hence, researchers are looking for some attractive materials with low-cost, lightweight, and enviro...
Use of Bacillus Species Bacteria in Protecting the Concrete Structures from Sulphate Attack- A Review
Deleterious ions in the environment such as sulfates may degrade the concrete structures. The interaction of cement hydration products with these destructive agents contributes to severe durability threat of the concrete...
The Application of Arylglyoxals in the Synthesis of Pyrrolo[2,3-d]pyrimidines via Multicomponent Reactions
This review provides an overview of the recent literature on application of arylglyoxals the synthesis of pyrrolo[2,3-d]pyrimidines via multicomponent reactions in the period of 2008–2018. 1,2-Dicarbonyl compounds are at...
Calcium Sensitizing and Phosphodiesterase-III Inhibitory Activity of Pyridazine Compounds: A Review
Congestive heart disease is one of the main causes of death in the globe, affecting more than 1% of the world population. Various remedial agents are used for the treatment of cardiac diseases such as inotropics and vaso...
Review of procedures involving separation and Solid Phase Extraction for the determination of cadmium using spectrometric techniques
Spectrometric techniques for the analysis of trace Cadmium have developed rapidly due to the increasing need for accurate measurements at extremely low levels of this element in diverse matrices. This review covers separ...