Chemically Induced Calcium Carbonate Precipitation for Improving Strength of Sand

Park, Sung-Sik; Le, Trung-Tri; Nong, Zhenzhen; Moon, Hong-Duk; Lee, Dong‐Eun

doi:10.1061/(asce)mt.1943-5533.0003318

Cited by 18 publications

(8 citation statements)

References 28 publications

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“…However, this behavior was not clearly shown in this study, in which the ε peak was an insignificant difference. A similar result was obtained in a previous study as a result of mobilizing the shearing resistance at the interaction between sand particles after breaking of cemented bonds [ 28 ]. Therefore, ε peak does not decrease with an increase in UCS and E 50 , because the friction among the sand particle sustains the shearing resistance, losing the resistance of the cementing bonds.…”

Section: Resultssupporting

confidence: 89%

Durability and Strength Characteristics of Casein-Cemented Sand with Slag

et al. 2020

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Casein is often used as an eco-friendly wood adhesive. In this study, we used casein for soil cementation by mixing it with Jumunjin sand, sodium hydroxide (SH), and calcium hydroxide (CH) as a standard casein formula. The modified casein binder with different proportions of SH and CH was applied to improve water resistance. Furthermore, a blast furnace slag (BFS) was additionally mixed and reacted with alkalinity of modified casein binder. Thus, three types (standard, modified, and modified + BFS, referred to as STD, MOD, and MBS, hereafter) of casein binders were tested for durability and strength of casein-cemented sand. A piezoelectric sensor was installed within each sample to determine the curing time of the casein-cemented samples. The samples were air-cured at room temperature for seven days and some were repeatedly immersed in water thrice. Unconfined compression and jar slake tests were carried out to evaluate the strength and durability of the casein-cemented sand. Also, the microstructure was analyzed using a scanning electron microscope (SEM). We observed variations of peak conductance and corresponding frequency converged as the curing time increased. It was most significant for the MBS samples, which developed strength early. The unconfined compressive strength (UCS) of the air-cured samples was higher than those repeatedly immersed in water due to wash-off of the casein binder. The UCS of the dry MBS sample was 9900 kPa while that of the immersed sample was 430 kPa, which gradually decreased to 60 kPa upon repeated immersion. The samples with STD and MOD had no resistance to durability and showed cracks on the surface, while the MBS sample exhibited significantly improved durability and no cracks. We found that the MBS binder had a positively significant effect on the durability and strength of casein-cemented sand.

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Section: Resultssupporting

confidence: 89%

Durability and Strength Characteristics of Casein-Cemented Sand with Slag

et al. 2020

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“…3, the heterogeneity in the calcium carbonate precipitate along the length of the samples is observed in PSD 4, 9, and 12, and this heterogeneity can cause lower compressive strengths in these samples compared to the other samples. The compressive strength obtained in the samples using the current method, in which calcium carbonate is used as a binder, is superior to that obtained in the samples using the previously reported method (Cardoso et al 2020;Park et al 2020).…”

Section: Compressive Strength Of the CCCcontrasting

confidence: 75%

“…A previous investigation indicated that calcite agglomeration also improved the compressive strength of calcium-carbonateprecipitated products (Park et al 2010). Calcite is precipitated between aggregate particles and connected to consolidate the aggregate blend; however, the contribution of calcite solely to the compressive strength of calcium carbonate products is still low (AlAhmari et al 2020;Park et al 2020). Furthermore, aragonite is believed to be the main contributor to the increased compressive strength of calcium carbonate composite materials (Myszka et al 2019;Hargis et al 2021;Maruyama et al 2021).…”

Section: Strength Development Mechanism Of CCCmentioning

confidence: 99%

Effects of Particle Size Distribution on the Performance of Calcium Carbonate Concrete

Bui

Kurihara

Kotaka

et al. 2022

ACT

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The study investigates the effects of the particle size distribution (PSD) of aggregates on the properties of calcium carbonate concrete (CCC). Fifteen different types of aggregate PSDs were designed to select the appropriate PSD for CCC, based on the experimental data. Notably, the compressive strength of the CCC depends on the aggregate PSD, fineness modulus of the aggregates, packing ratio, and the amount of solution moving throughout the specimen. After one-day CCC processing, its compressive strength reached 7.2 MPa with an appropriate PSD. In addition, the X-ray diffraction and scanning electron microscopy analysis revealed that aragonite was the dominant contributor to the development of CCC strength. The amount of aragonite was influenced by the amount of solution passing through the specimen and the PSD of the aggregate blend.

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“…There are few studies in the literature on the occurrence of carbonation and its effects on the durability of soils treated with lime-based materials [25]. More recently, studies have been developed that address this aspect in more detail [22,25,32,[36][37][38][39][40][41][42][43][44][45][46][47], but there is still no study in the literature that presents the in uence of carbonation processes in tropical soils stabilized with EAFS, especially considering the mechanical tests that apply to structural materials of asphalt pavements (e.g., resilient modulus and CBR index).…”

Section: Introductionmentioning

confidence: 99%

Geotechnical Behavior of Soil-electric Arc Furnace Slag Mixtures Under Carbonation

RODRIGUES,

Silva,

Pitanga

et al. 2024

Preprint

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Although the treatment of soils with lime-based materials is used in many earthworks projects, there are only a few studies that deal with the quantification of their carbonation.The objective of this work was to investigate the influence of carbonation in mixtures between two samples of tropical soils and Electric Arc Furnace Slag (EAFS) in terms of Unconfined Compressive Strength (UCS), mini-CBR index, mini-CBR expansion, and Resilient Modulus (RM) properties. Four types of curing were used: (1) conventional sealed curing in a humid chamber; (2) conventional sealed curing in a humid chamber followed by unsealed curing with exposure to air; (3) conventional sealed curing in a humid chamber followed by unsealed curing in an accelerated carbonation chamber. In addition, tests were performed to determine the carbonation depth by spraying phenolphthalein, pH, scanning electron microscopy (SEM), and X-ray diffraction (XRD). It was found that the results of the soil-EAFS were better than those of the soil samples not stabilized for all the curing processes analyzed. In the curing processes (1), the formation of calcium aluminum silicate hydrate structures (CASH) was found to improve the mechanical behavior of soil-EAFS mixtures. The formation of calcium carbonate (CaCO3) was observed in curing processes (2) and (3), which significantly improved the mechanical properties. Thus, the carbonation process increases the strength and stiffness of the soil-EAFS mixtures, which guarantees the durability of these mixtures over the years.

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Chemically Induced Calcium Carbonate Precipitation for Improving Strength of Sand

Cited by 18 publications

References 28 publications

Durability and Strength Characteristics of Casein-Cemented Sand with Slag

Durability and Strength Characteristics of Casein-Cemented Sand with Slag

Effects of Particle Size Distribution on the Performance of Calcium Carbonate Concrete

Geotechnical Behavior of Soil-electric Arc Furnace Slag Mixtures Under Carbonation

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