Influence of Fiber Addition on Mechanical Properties of MICP-Treated Sand

Li, Mingdong; Li, Lin; Ogbonnaya, Ubani; Wen, Kejun; Tian, Anli; Amini, Farshad

doi:10.1061/(asce)mt.1943-5533.0001442

Cited by 140 publications

(53 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This requires better understanding of the interface between microbial ecology and aqueous geochemistry. Urease activity is exhibited by various species of microorganisms [40], and the ability of urease to induce carbonate precipitation has been studied by several researchers [25,58,[90][91][92][93][94].…”

Section: Mechanisms Of Microbially Induced Calcite Precipitationmentioning

confidence: 99%

Review of the use of microorganisms in geotechnical engineering applications

et al. 2020

View full text Add to dashboard Cite

Until recently, engineers either ignored or neglected the role of microorganisms in geotechnical engineering. The microbially induced calcite precipitation (MICP) research technique is an innovative and relatively green technology which consists in a biological process through which microorganisms react with minerals (calcium source and cementation reagent) to produce calcite (CaCO 3 ) as a byproduct that modifies and improves the engineering properties of soil. Laboratory and field results obtained from various studies are promising and viable, suggesting potential for various engineering applications. This research technique has also been considered to be useful in many engineering applications such as improvement of construction materials, cementation of porous media, improvement in strength and stiffness of engineering soils, hydraulic control of engineering facilities (waste containment), liquefaction, and erosion mitigation. In this review, the various methods of production of calcium carbonates (calcite), the role played by bacteria, various state-of-the-art procedures that have evolved in this research area, as well as ongoing studies are reported. Furthermore, the use of the MICP technique in remediation of contaminants and other environmental concerns is also presented. The advantages and challenges (in form of undesired byproducts) of this research technique are highlighted herein.

show abstract

Section: Mechanisms Of Microbially Induced Calcite Precipitationmentioning

confidence: 99%

Review of the use of microorganisms in geotechnical engineering applications

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Choi et al [18] discovered that the UCS rapidly increased as the PVA fiber content increased up to 0.8% when the CC was high. Li et al [17] showed that the shear strength of MICP treated sand with polypropylene fiber increased up to a ratio of 0.3%. Therefore, the optimum fiber content for sand treated by MICP could be influenced by the CC and testing methods.…”

Section: Effect Of Fiber Inclusionmentioning

confidence: 99%

“…The images show the distribution and cubic shape of the precipitated calcite surrounding the sand particles and fiber. This bonding may contribute to the improvement in the engineering properties [17,18]. The calcite particles were less than 10 μm in diameter, as shown in Figure 8b, which may affect the strength of the biocemented sand [5].…”

Section: Microstructure Of Biocementation With Fibermentioning

confidence: 99%

“…Li et al [17] recently published an article that addresses a similar addition of co-blended fibers to improve the MICP performance of sand biocementation, and reported on the use of homopolymer polypropylene multifilament fiber. This addition showed that suitable engineering properties were obtained with fiber additions of up to 0.3% fiber content by weight of sand.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Undrained Behavior of Microbially Induced Calcite Precipitated Sand with Polyvinyl Alcohol Fiber

2019

View full text Add to dashboard Cite

Microbially induced calcite precipitation can cement sand and is an environment-friendly alternative to ordinary Portland cement. In this study, clean Ottawa sand was microbially treated to induce calcite contents (CCs) of 0%, 2%, and 4%. Polyvinyl alcohol fiber was also mixed with the sand at four different contents (0%, 0.2%, 0.4%, and 0.6%) with a constant CC of 4%. A series of undrained triaxial tests was conducted on the treated sands to evaluate the effects of the calcite treatment and fiber inclusion. Their hydraulic conductivity was also determined using a constant head test. As the CC increased from 0% to 4%, the friction angle and cohesion increased from 35.3° to 39.6° and from 0 to 93 kPa, respectively. For specimens with a CC of 4%, as the fiber content increased from 0% to 0.6%, the friction angle and cohesion increased from 39.6° to 42.8° and from 93 to 139 kPa, respectively. The hydraulic conductivity of clean Ottawa sand decreased by a factor of more than 100 as the CC increased from 0% to 4%. The fiber inclusion had less effect on the hydraulic conductivity of the specimen with 4% CC.

show abstract

“…Paassen et al [18] demonstrated that this technique can enhance the bearing capacity and stiffness of soils in large-scale in situ tests. Park et al [19], Li et al [20], and Xiao et al [21] investigated the effect of polyvinyl alcohol (PVA) fiber, polypropylene (PP) fiber, and basalt fiber on the strength of microbial solidified sand.…”

Section: Introductionmentioning

confidence: 99%

Strength and Micromechanism Analysis of Microbial Solidified Sand with Carbon Fiber

Qiu

Tong

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

Microbially induced calcite precipitation (MICP) is an effective and ecofriendly technology that utilizes the microbes-induced mineralization to improve foundation soils of the transportation infrastructure. The carbon fiber can be used along with the MICP in order to reduce the brittleness of microbial solidified soil. This paper investigated the strength of carbon fiber-reinforced sand with different mass fractions through a series of unconfined compression tests. The effect of fiber content on the solidification of carbon fiber-reinforced sand was quantitatively analyzed using calcium carbonate content test and penetration test. The microsolidification mechanism was investigated by micrographs from the optical and scanning electron microscope (SEM). The test results showed that unconfined compressive strength generally increased first and then decreased with the increase of the fiber content. The optimal fiber content in the silica and calcareous sand was 0.2% and 0.1%, respectively. The bulging deformation of the fiber-reinforced sand sample was gradually developed along with the fiber breakage during loading.

show abstract

Influence of Fiber Addition on Mechanical Properties of MICP-Treated Sand

Cited by 140 publications

References 24 publications

Review of the use of microorganisms in geotechnical engineering applications

Review of the use of microorganisms in geotechnical engineering applications

Undrained Behavior of Microbially Induced Calcite Precipitated Sand with Polyvinyl Alcohol Fiber

Strength and Micromechanism Analysis of Microbial Solidified Sand with Carbon Fiber

Contact Info

Product

Resources

About