Bio-inspired self-healing of concrete cracks using new B. pseudomycoides species

Published on May 1, 2021in Journal of materials research and technology5.289
· DOI :10.1016/J.JMRT.2021.03.037
Hassan Amer Algaifi1
Estimated H-index: 1
(UTHM: Universiti Tun Hussein Onn Malaysia),
Hassan Amer Algaifi3
Estimated H-index: 3
(UTHM: Universiti Tun Hussein Onn Malaysia)
+ 5 AuthorsBabatunde Abiodun Salami6
Estimated H-index: 6
(UPM: King Fahd University of Petroleum and Minerals)
Source
Abstract
Abstract Bio-inspired self-healing of concrete cracks has been widely exploited to improve concrete properties and thus increase concrete life span using different bacterial species in recent years. The most common bacterial species found in the present literature are B. sphaericus, Sporosarcina pasteurii, Spore-forming alkali-resistant bacteria, B. megaterium and B. subtilis, while there is no published research using B. pseudomycoides species to heal concrete cracks. Furthermore, the need for more in-depth information on the healing ratio in the deeper part of the concrete crack remains. In the present study, a new bacterial species, namely B. pseudomycoides strain HASS3, was isolated, identified and tested for its ability to heal artificial cracked concrete samples. Both variable-pressure scanning electron microscope (VP-SEM) and X-ray computed microtomography (X-ray μCT) were utilised to assess the evolution of the healing ratio along with the crack profile. VP-SEM results revealed that a crack mouth width of 0.4 mm was fully healed through microbial precipitation which was later identified as calcite and vaterite using XRD. In contrast, according to the X-rays μCT results, the maximum healing ratio in the deeper part of the crack was only 14 % compared to the crack mouth. As such, it could be concluded that bacteria-based self-healing could be function as a sustainable strategy to heal cracks located in the concrete skin.
📖 Papers frequently viewed together
5 Citations
6 Authors (Ai Li, ..., Chuan Yang)
5 Citations
26 Citations
References96
Newest
#1Abdullah Faisal Alshalif (UTHM: Universiti Tun Hussein Onn Malaysia)H-Index: 3
#2J.M. Irwan (UTHM: Universiti Tun Hussein Onn Malaysia)H-Index: 10
Last. Ibrahim M. Nasser (UTHM: Universiti Tun Hussein Onn Malaysia)H-Index: 1
view all 6 authors...
Abstract The current technologies used for reducing CO2 emission are not sufficient to sequestrate the high amount of CO2 in atmospheric. This research rolls up a new direction of CO2 sequestration process in bio-foamed concrete bricks (B-FCB) using Bacillus tequilensis 401 as an acceleration factor of natural carbonation. The strain of B. tequilensis 401 was isolated from cement kiln dust (CKD) and adapted to B-FCB environment. It produces carbon anhydrase (CA) and urease enzymes to accelerate ...
1 CitationsSource
#1Jorge de Brito (IST: Instituto Superior Técnico)H-Index: 63
#2Rawaz KurdaH-Index: 15
Abstract The negative impacts of cement-based material (CBM) production are way bigger than ever expected. To illustrate the scale of this phenomenon, all the forests in the world, regardless of the fact that they are disappearing at an alarming rate, are not enough to offset even half the environmental impact (EI) of global aggregates and cement production. Thus, it is necessary to promote scientific research and guide more researchers and professionals in the construction industry to investiga...
23 CitationsSource
#1Pavan Kumar JogiH-Index: 1
#2T.V.S. Vara Lakshmi (Acharya Nagarjuna University)H-Index: 1
Abstract This paper discusses a brief explanation of the different properties of bacterial concrete. In concrete, micro-cracks are inherently present. This causes concrete degradation due to the introduction of deleterious substances into concrete, leading to structural deterioration. Because of this concrete need rehabilitation. Bio-mineralization techniques yield promising results in concrete sealing of the micro cracks. The freshly composed micro-cracks can be sealed up in concrete through pe...
2 CitationsSource
#1Brunella Balzano (Cardiff University)H-Index: 3
#2John Sweeney (University of Bradford)H-Index: 14
Last. Anthony Duncan Jefferson (Cardiff University)H-Index: 16
view all 5 authors...
Abstract The paper presents a new healing system that uses pre-tensioned hybrid tendons to close cracks in cementitious structural elements. The tendons comprise an inner core, formed from aramid fibre ropes, and an outer sleeve made from a shape memory PET. During the manufacturing process, the inner core of a tendon is put into tension and the outer sleeve into compression, such that the tendon is in equilibrium. A set of tendons are then cast in a cementitious structural element and heat acti...
2 CitationsSource
#1Jing Xu (Tongji University)H-Index: 13
#2Yihong Tang (Tongji University)H-Index: 2
Last. Wu Yao (Tongji University)H-Index: 19
view all 5 authors...
Abstract Cracking is inevitable in concrete due to its quasi-brittle nature. The presence of micro-cracks will not only impair concrete, but induce reinforcement corrosion by providing paths for the ingress of harmful species. In the past decades, a new technique to repair cracks automatically based on microbial induced carbonate precipitation has become attractive. This paper explored the crack healing potential of reinforced concrete incorporated with ureolytic type microbial self-healing agen...
9 CitationsSource
#1Siti Khodijah Chaerun (ITB: Bandung Institute of Technology)H-Index: 9
#2Ridwan Syarif (ITB: Bandung Institute of Technology)H-Index: 1
Last. Ridho K. Wattimena (ITB: Bandung Institute of Technology)H-Index: 6
view all 3 authors...
Concrete can be harmful to the environment due to its high energy consumption and CO2 emission and also has a potential crack formation, which can promote a drop in its strength. Therefore, concrete is considered as a non-sustainable material. The mechanisms by which bacterial oxidation of organic carbon can precipitate calcite that may fill the voids and cracks on cement-based materials have been extensively investigated to prevent and heal the micro-cracks formation. Hence, this study focused ...
3 CitationsSource
#1Momina Rauf (National University of Sciences and Technology)H-Index: 3
#2Wasim Khaliq (National University of Sciences and Technology)H-Index: 14
Last. Iftikhar Ahmed (National Agricultural Research Centre)H-Index: 23
view all 4 authors...
Abstract Carrier compounds besides the type of bacteria for microbial induced calcite precipitation are equally important in self-healing concrete. This study investigates the potential utilization of natural fibers namely, coir, flax, and jute fibers to carry bacterial spores for self-healing in concrete. The comparison is drawn for introducing calcite precipitation bacteria namely Bacillus subtilis KCTC-3135T, Bacillus cohnii NCCP-666, and Bacillus sphaericus NCCP-313 in concrete along with ca...
9 CitationsSource
#1Alvaro Gonzalez (UC: Pontifical Catholic University of Chile)H-Index: 22
#2Araceli Parraguez (Valpo: Valparaiso University)H-Index: 1
Last. Marcelo González (UC: Pontifical Catholic University of Chile)H-Index: 20
view all 7 authors...
Abstract This article studies the effect of Portland and Pozzolanic cement on the crack-healing of mortars prepared with Bacillus pseudofirmus bacteria and calcium lactate as a nutrient. Mixtures were prepared with the same content of cement, water, sand, and Light Weight Aggregate. Results showed an inverse relationship between crack width and self-healed area, with most of the healing occurring between 0 and 21 days of sample conditioning. The healing on samples with calcium lactate only and c...
5 CitationsSource
#1Kwok Wei Shah (NUS: National University of Singapore)H-Index: 22
#2Ghasan Fahim Huseien (NUS: National University of Singapore)H-Index: 20
Climate change is anticipated to have a major impact on concrete structures through increasing rates of deterioration as well the impacts of extreme weather events. The deterioration can affect directly or indirectly climate change in addition to the variation in the carbon dioxide concentration, temperature and relative humidity. The deterioration that occurs from the very beginning of the service not only reduces the lifespan of the concretes but also demands more cement to maintain the durabi...
6 CitationsSource
#1Hassan Amer Algaifi (UTM: Universiti Teknologi Malaysia)H-Index: 3
#1Hassan Amer Algaifi (UTM: Universiti Teknologi Malaysia)H-Index: 3
Last. Wahid Ali Hamood Altowayti (UTM: Universiti Teknologi Malaysia)H-Index: 7
view all 7 authors...
Abstract Microbial calcium carbonate has been widely investigated to self-heal concrete cracks. However, the issue revolving around the efficacy of crack self-healing remains important. In particular, existing works are still lacking of a better understanding of the factors affecting the fundamental reactions involved as well as bacterial growth in harsh condition such as concrete. In this study, a comprehensive investigation was conducted to explore the bacterial growth and influential factors ...
10 CitationsSource
Cited By1
Newest
#1Norfaniza Mokhtar (UTHM: Universiti Tun Hussein Onn Malaysia)
#2Megat Azmi Megat Johari (Universiti Sains Malaysia)H-Index: 30
Last. Hassan Amer Algaifi (UTHM: Universiti Tun Hussein Onn Malaysia)H-Index: 3
view all 5 authors...
Abstract null null The present study developed a cleaner production bio-cementitious mortars (BCM) using immobilised Bacillus sphaericus activity. In order to achieve a sustainable enhancement of BCM, the effect of curing in distilled water (DW as normal water), deposition medium (DM as controlled nutrient), and runoff water (RW as uncontrolled nutrient) was investigated compared to control cementitious mortars (CCM). The BCM production was optimised based on curing days (3–90 days) and setting ...
Source
This study investigated the optimization of the bioconcrete engineering properties and durability as a response of the calcium lactate (CL) content (0.22–2.18 g/L) and curing duration (7–28 days) using the response surface methodology (RSM). Scanning electronic microscopy (SEM) was conducted to evaluate the microstructure of calcium precipitated inside the bioconcrete. The results indicated that the optimal conditions for the engineering properties of concrete and durability were determined at 2...
Source