Experimental Study on Strength Parameters of Self Repairing Concrete

Reddy, Panga Narasimha; Kavyateja, Bode Venkata

doi:10.18280/acsm.430505

Cited by 13 publications

(9 citation statements)

References 26 publications

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“…En [62], se estudió el efecto de la bacteria bacillus subtillis y el lactato de calcio en el rendimiento mecánico del hormigón, la concentración bacteriana de 10 5 células/ml y la adición del 0.5% de lactato de calcio en el hormigón, mejoraron la resistencia a la compresión en todas las edades. Por otro lado, Vijay & colaboradores [63].…”

Section: Resistencia a La Compresión Del Concreto Bacteriano De Las B...unclassified

Influencia de las bacterias en la autocuración del concreto

Pérez¹,

Carlos-Sánchez²,

Peralta-Sánchez³

2023

Rev. UIS ing.

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El presente documento contempla una reflexión crítica de los avances tecnológicos en ensayos biológicos y químicos que es sometido el concreto mediante la incorporación de bacterias, con el objetivo de conocer los distintos elementos microbianos que poseen propiedades de biomineralización capaces de realizar la autocuración en el concreto, asimismo, se revisaron métodos y aplicaciones de las bacterias en el concreto con el fin de mejorar sus propiedades mecánicas a las diferentes exigencias sometidas las estructuras modernas, y al mismo tiempo contribuir con la reducción de gases dañinos al medio ambiente. En el desarrollo de este manuscrito se revisaron 80 artículos indexados entre los años 2017 al 2021 distribuidos de la siguiente manera, 51 en Scopus, 17 en Ebsco, y 12 en SciencieDirect, señalando y describiendo que el concreto microbiano tiene un enfoque prometedor en un futuro cercano. Los resultados alcanzados con la incorporación de las diferentes bacterias de Bacillus, como son Bacillus subtillis, B, cohnii, B. pasteurii, B. pseudofirmus, B. megaterium entre otros, en diferentes concentraciones de células/ml., mostraron gran efectividad en la cicatrización de grietas, aumentando también la resistencia a la compresión, flexión y tracción en el concreto. Sobre la base de la revisión literaria se concluye que la precipitación microbiana de carbonato de calcio mediante ureólisis en la matriz del concreto, mitiga el agrietamiento, mejora la resistencia, aumenta la durabilidad y, por lo tanto, disminuye los costes en reparación de las estructuras.

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Section: Resistencia a La Compresión Del Concreto Bacteriano De Las B...unclassified

Influencia de las bacterias en la autocuración del concreto

Pérez¹,

Carlos-Sánchez²,

Peralta-Sánchez³

2023

Rev. UIS ing.

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“…Durability and mechanical test Existing structure Pseudomonas bacteria [36][37][38][39] Compression strength [40][41][42] Self-healing [16,[43][44][45]] Bacillus subtilis [2,4,34] Tension strength [5,[46][47][48] Resettlement of original structure [1,16,49, 50] Megaterium bacteria [5,51,52] Flexural strength [3], [28,53,54] Cereus and sphaericus bacteria [55][56][57] Durability characteristics [12,19,[58][59][60] [71], a split tensile strength test is performed at the ages of seven days, twentyeight days, fty-six days, ninety days, one hundred twenty days, one hundred eighty days, two hundred seventy days, and three hundred sixty-ve days using a compressive testing machine with a capacity of two thousand kilonewtons. e loading part and the surface of the cylinder specimen are separated by a wooden strip so that there is no direct impact from the loading on the cylinder [55,72,73].…”

Section: Materials Usedmentioning

confidence: 99%

“…Concrete is thought of as a homogeneous substance since it is created by combining cement, coarse and fine aggregate, and water in a certain ratio. Concrete is a porous material and is sensitive to various assaults such as chloride, CO 2 , sulfate, freeze and thaw cycles, and others because it is made up of voids that are referred to as pores [ 1 , 2 ]. Since these pores are typically associated with one other, concrete is a porous substance.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Bio Concrete by Cluster and Regression Analysis for Environment Protection

Shukla

Gupta

Singh

et al. 2022

Computational Intelligence and Neuroscience

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The focus of this research is to isolating and identifying bacteria that produce calcite precipitate, as well as determining whether or not these bacteria are suitable for incorporation into concrete in order to enhance the material’s strength and make the environment protection better. In order to survive the high “potential of hydrogen” of concrete, microbes that are going to be added to concrete need to be able to withstand alkali, and they also need to be able to develop endospores so that they can survive the mechanical forces that are going to be put on the concrete while it is being mixed. In order to precipitate CaCO3 in the form of calcite, they need to have a strong urease activity. Both Bacillus sphaericus and the Streptococcus aureus bacterial strains were evaluated for their ability to precipitate calcium carbonate (CaCO3). These strains were obtained from the Department of Biotechnology at GLA University in Mathura. This research aims to solve the issue of augmenting the tension and compression strengths of concrete by investigating possible solutions for environmentally friendly concrete. The sterile cultures of the microorganisms were mixed with water, which was one of the components of the concrete mixture, along with the nutrients in the appropriate proportions. After that, the blocks were molded, and then pond-cured for 7, 28, 56, 90, 120, 180, 270, and 365 days, respectively, before being evaluated for compressibility and tensile strength. An investigation into the effect that bacteria have on compression strength was carried out, and the outcomes of the tests showed that bacterial concrete specimens exhibited an increase in mechanical strength. When compared to regular concrete, the results showed a maximum increase of 16 percent in compressive strength and a maximum increase of 12 percent in split tensile strength. This study also found that both bacterial concrete containing 106, 107, and 108 cfu/ml concentrations made from Bacillus sphaericus and Streptococcus aureus bacteria gave better results than normal concrete. Both cluster analysis (CA) and regression analysis (RA) were utilized in this research project in order to measure and analyze mechanical strength.

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“…Figure 3: Mechanism of calcite production through cell and calcium ion attraction adopted from [45,46]. cost of maintenance and repair.…”

Section: Calcium Positive Charge Calcite Precipitatementioning

confidence: 99%

Bacterial Performance in Crack Healing and its Role in Creating Sustainable Construction

Alemu

Demiss

Korsa

2022

International Journal of Microbiology

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Building practices began with human civilization. Cement is the most commonly used building construction material throughout the world. These traditional building materials have their own environmental impact during production, transportation, and construction, but also have limitations on building quality and cost. Biological construction materials are currently emerging technology to combat emissions from the construction sector. Different civil and biotechnology researchers have turned to microorganisms for the production of bio construction materials that are environmentally friendly, socially acceptable, and economically feasible but can also produce high strength. Scanning electron microscope (SEM) and X-Ray diffraction (XRD) are the most characterization methods used to observe and ensure the production of calcite precipitate as bacterial concrete. As compared to conventional concrete, bacterial concrete was greater by 35.15% in compressive strength, 24.32% in average tensile strength, and 17.24% in average flexural strength, and it was 4 times lower in water absorption and 8 times lower in acid resistivity than conventional concrete. Genetic engineering has great potential to further enhance the mechanical strength of bacterial concrete for use in crack repairs in existing buildings.

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Experimental Study on Strength Parameters of Self Repairing Concrete

Cited by 13 publications

References 26 publications

Influencia de las bacterias en la autocuración del concreto

Influencia de las bacterias en la autocuración del concreto

Performance Evaluation of Bio Concrete by Cluster and Regression Analysis for Environment Protection

Bacterial Performance in Crack Healing and its Role in Creating Sustainable Construction

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