Experimental investigation on strength and durability of light weight bacterial concrete

Iswarya, N.; Adalarasan, R.; Devi, V. Subathra; Kumar, Manoj

doi:10.1016/j.matpr.2020.03.412

Cited by 10 publications

(6 citation statements)

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“…Iswarya and Adalarasan (11) focused on the strength and durability of lightweight bacterial concrete, exploring its potential to meet the structural requirements of various construction projects. Their investigation emphasized the importance of optimizing bacterial concentration for improved performance.…”

Section: Research Significancementioning

confidence: 99%

Experimental Study on Self-compacting and Self-healing Concrete with Recycled Coarse Aggregates

Sreenu,

Suryawanshi,

Ashish

2024

IJE

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This study focuses on evaluating the effectiveness of various cell concentrations of bacillus bacteria in mending cracks within recycled concrete containing coarse aggregates. In this investigation, the introduction of bacillus bacterial sustainable concrete as a solution for addressing crack repairs. This innovative concrete formulation not only provides environmentally friendly alternatives but also offers economic benefits. This research involves the incorporation of coarse aggregates into the concrete mix, along with the partial substitution of cement by Fly ash and Ground Granulated Blast Furnace Slag (GGBS), each accounting for 20% of the mix. The coarse aggregates consist of Recycled Concrete Aggregate (RCA) in varying proportions: 0%, 50%, and 100%. Additionally, Bacillus licheniformis was used at concentrations of 10 3 , 10 5 , and 10 7 cells/mL, respectively. The findings indicate a positive correlation between the healing percentage of cracks, as measured by Ultrasonic Pulse Velocity (UPV), and the concentration of bacteria. Furthermore, it is observed that recycled aggregates possess inherent pores that allow for water absorption through these pores. Therefore, RCA is subjected to a 24-hour water immersion process before its incorporation into the concrete mix. While the compressive strength of the concrete remains consistent between RCA 0% and RCA 50%, it decreases significantly at RCA 100%. However, the performance of the bacteria exhibits proportionality to cell concentration. Notably, the effectiveness of the bacteria remains consistent regardless of changes in RCA proportions. This study underscores the promising potential of Bacillus bacteria in enhancing the durability and sustainability of concrete structures, with particular relevance to RCC applications.

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Section: Research Significancementioning

confidence: 99%

Experimental Study on Self-compacting and Self-healing Concrete with Recycled Coarse Aggregates

Sreenu,

Suryawanshi,

Ashish

2024

IJE

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“…Similarly, B. Subtilis demonstrates a noteworthy increase in compressive strength, ranging from 2.7% to 24.07%. This strain has been extensively studied and exhibits promising outcomes in various research studies (Bashir et al, 2016;; C. S. S. Iswarya et al, 2020;Khaliq & Ehsan, 2016;Luhar & Gourav, 2015;Manikandan & Padmavathi, 2015;Meera & Subha, 2016;Nosouhian et al, 2016;Pachaivannan et al, 2020;Rex et al, 2018;Safiuddin et al, 2022;Seshagiri Rao et al, 2013;Sonali Sri Durga et al, 2020;Venkata Siva Rama Prasad & Vara Lakshmi, 2020).…”

Section: Compressive Strengthmentioning

confidence: 99%

“…; C C. S. S. Durga & Ruben, 2019;Iswarya et al, 2020;Khaliq & Ehsan, 2016;Luhar & Gourav, 2015;Manikandan & Padmavathi, 2015;Meera & Subha, 2016;Nosouhian et al, 2016;Pachaivannan et al, 2020;. …”

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confidence: 99%

Bio-Concrete and Beyond: Advancements in Self-Healing Techniques for Durable Infrastructure

Zeaiter,

Jahami,

Khatib

2023

SCCEE

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Concrete is widely used in construction due to its durability and strength. However, structures made of concrete may weaken over time due to a variety of reasons, such as cracks, chemical attack, and environmental factors. This necessitates the development of new techniques to improve the lifespan and sustainability of concrete structures. Bio-concrete and self-healing techniques have emerged as viable approaches to address the challenges of concrete degradation. This literature review aims to provide a comprehensive overview of the advancements made in bio-concrete and self-healing technologies for concrete. The review begins by discussing the fundamental principles of bio-concrete, which is defined as the incorporation of bacteria or other microorganisms into the concrete matrix. These bacteria are capable of producing calcite precipitation, thereby sealing cracks and enhancing the concrete’s self-healing properties. Moreover, the review explores the mechanical and chemical characterization techniques used to assess the performance of bio-concrete as a self-healing concrete. It analyzes the results of various experimental studies and field applications that offer insights into the performance and effectiveness of these technologies under diverse environmental conditions. Overall, this literature review aims to consolidate the current knowledge and advancements in bio-concrete and self-healing technologies. The findings from this review can serve as a valuable resource for researchers, engineers, and practitioners involved in the design, construction, and maintenance of concrete infrastructure. This contribution ultimately promotes the development of more sustainable and durable concrete materials.

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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%

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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Experimental investigation on strength and durability of light weight bacterial concrete

Cited by 10 publications

References 0 publications

Experimental Study on Self-compacting and Self-healing Concrete with Recycled Coarse Aggregates

Experimental Study on Self-compacting and Self-healing Concrete with Recycled Coarse Aggregates

Bio-Concrete and Beyond: Advancements in Self-Healing Techniques for Durable Infrastructure

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

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