Mitigating alkali-silica reaction induced concrete …

From the inset of Fig. 1 b, with increasing replacement of MK by bentonite, less expansion was obtained suggesting the synergistic effects between MK and bentonite in mitigating ASR in concrete. These reductions are attributed to the fact that bentonite and MK can work synergistically to enhance cement hydration in terms of strength …

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Role of Bentonite Buffer in the Presence of Cement Leaching Water

Role of Bentonite Buffer in the Presence of Cement Leaching Water ... The results presented in this paper are from a 25-year mortar and concrete testing project that will influence the design ...

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The role of interfaces in the bentonite barrier of a nuclear waste

the change of gas transport properties with respect to the untretated, reference FEBEX bentonite and. −. the role of interfaces on gas transport. To accomplish the last aim, the samples were drilled both in the middle of blocks and along the interface between two blocks, as indicated in Fig. 2.

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Performance of Self Compacting Concrete Using Bentonite

: Supplementary Cementitious Materials (SCMs) have the potential to enhance the properties of self-compacting concrete (SCC) while reducing the pressure on natural reserves and CO 2 emissions. However, certain SCMs are not able to meet the needs in the construction industry. This research investigates the role of unheated …

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Utilization of the natural Jordanian bentonite clay in …

This compound assumes a pivotal role in developing impermeable substitutes for clay, stimulating research to elucidate its properties and applications. ... The employment of bentonite in concrete was found to have positive benefits in terms of strength and durability [1, 32] which is consistent with the findings reached from this …

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The role of smectite composition on the hyperalkaline alteration …

The hyperalkaline pore waters emanating from concrete will react with the bentonite barrier transforming its initial properties ( and Berger, 1998, ... Although the present results do not focus to resolve what the role of the accessory mineral in the alteration of bentonite and formation of secondary minerals is, the initial composition of ...

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Bentonite Slurry Preparation And Recycling

Bentonite is a very fine-grained clayey material having a high percentage of montmorillonite material. Bentonite slurry is used for soil stabilisation. ... After flushing the borehole bottom and before pouring concrete into the pile bore, if the side soils of the borehole collapse, again loose muck will be deposited at the pile bottom, which ...

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An experimental study investigating the effects of bentonite …

The powder metallurgy (P/M) components have been extensively used in industrial applications and P/M components properties has been influenced by alloying elements and porosity.

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Formation of C-A-S-H phases from the interaction between concrete …

Formation of C-A-S-H phases from the interaction between concrete or cement and bentonite - Volume 51 Issue 2. 22 August 2024: Due to technical disruption, we are experiencing some delays to publication. We are working to restore services and apologise for the inconvenience. ... (2006) The role of Al in C-S-H: NMR, XRD, and …

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The role of bentonite in the repository concepts for …

Processed excavated material is mixed with bentonite to backfill the remaining voids inside the repository. For the closure of shafts, bentonite as binary mixture of briquettes and powder or as equipotential sand-bentonite-segments are considered. The present work also brings to light how bentonite is used in German repository concepts.

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Influence of Bentonite on Mechanical and Durability …

Keywords: geopolymer concrete, bentonite, recycled aggregates, GRAC, GNAC, mechanical properties, durability, rheological properties. 1. Introduction. ... Air …

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Influence of Bentonite on Mechanical and Durability …

Keywords: geopolymer concrete, bentonite, recycled aggregates, GRAC, GNAC, mechanical properties, durability, rheological properties. 1. Introduction. ... Air content is a property of fresh concrete that can play an important role in increasing or decreasing the concrete strength. The presence of air content in the concrete also …

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Full article: Study of the impact of bentonite on …

The use of natural bentonite and organo-bentonite as partial replacement of cement in concrete has been studied (Lima-Guerra et al., Citation 2014), the introduction of bentonite as partial cement …

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Investigating the properties of bentonite and kaolin modified concrete …

Using pozzolanic materials in concrete manufacturing is intended as an optimal solution to lower the rate of greenhouse gas emission, and diminish energy resources and cement consumption. This study investigates the effect of using Semnan bentonite and kaolin as partial replacement for cement in low-strength concretes. A …

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Effect of Bentonite Blend on the Compressive Strength of Various

The bentonite used was a sodium type, manufactured by Changsha May Shine Chemical Co., Ltd [Province: Hunan, China] but purchased from Lagos. Water. Water plays a major role in concrete mixing in that it starts the reaction between the ordinary Portland cement, rice husk ash and the aggregates. It also helps in the hydration of the …

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Use of Bentonite Slurry in Pile Foundation

Bentonite is naturally found in form of sodium montmorillonite which exhibits thixotropic properties i.e. when bentonite is mixed with water it form a gel under static conditions but when disturbed or when distressed it regains its fluidity.. During piling operation i.e. auger boring, the slurry is continually agitated thus penetrating into walls of …

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An experimental study investigating the effects of bentonite …

The increased porosity of concrete with the use of bentonite mineral makes the heat transfer difficult. ... Ashraf et al. [18] investigated the role of BC and its synergistic effect with silica fume as a partial replacement of cement on the strength, durability, and microstructure of concrete. The usage of supplementary materials in concrete ...

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Interactions of bentonite with metal and concrete from the …

Oxic corrosion was observed predominantly at the bentonite/steel liner interfaces, pointing towards a role of air entrapped between the liner and heater during emplacement. At the liner surface, intimate intergrowth of bentonite …

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Investigating the properties of bentonite and kaolin modified concrete …

It also reviews the literature about the physical & chemical properties of bentonite, bentonite blended cement mortar, bentonite modified cement concrete, and reinforced concrete.

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A systematic review of bentonite/concrete interaction …

The buffer/backfill material of bentonite acts the most important role for the safety of high-level nuclear waste repository. After the closure of repository, the concrete as another barrier in geological repositories will degrade and release alkaline components into the site water, which has significant impact on the compositions of bentonite and …

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The role of smectite composition on the hyperalkaline …

The buffer/backfill material of bentonite acts the most important role for the safety of high-level nuclear waste repository. After the closure of repository, the concrete as another barrier in geological repositories will degrade and release alkaline components into the site water, which has significant impact on the compositions of bentonite ...

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Bentonite Clays from Southeastern Spain as Sustainable …

The role of bentonites in the process of refining and the catalytic cracking of petroleum is well known [12,13,14]. However, one of the most widespread uses is in the drilling of wells during prospecting and the exploration of metallic, non-metallic and gas–petroleum deposits; In these operations, bentonites play a very important role in the ...

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Response of compacted bentonite to hyperalkalinity and thermal …

Thermal history on the samples. The effect of cement water (CW) on swell pressure of all thermal history induced bentonite specimens (B 1 and B 2), compacted at various densities (1.5 Mg/m 3, 1.75 ...

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The role of bentonite in two-component grout: A …

Bentonite (a clay mineral) is a standard ingredient in two-component grout; it stabilises the cement particles which would otherwise tend to segregate downward due …

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Effect of Bentonite as Partial Replacement of …

This study investigated the effect of elevated temperature on the mechanical, physical and durability properties of normal strength concrete, modified with bentonite. The bentonite concrete was cast …

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Developing a sustainable concrete incorporating bentonite …

The presented study investigates the role of bentonite clay (BC) and its synergistic effect with silica fume (SF) as partial replacement of cement on strength, durability, and microstructure of concrete. ... (2020) suggested that the addition of …

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Effects of bentonite on pore structure and permeability of cement

Moreover, the added bentonite could transform large capillary pores into small capillary pores more obviously compared to the same particle dimension quartz. Besides, it is worth noting that the large capillary pores could be fined to be medium capillary pores under the role of bentonite, which was highly consistent with the results …

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Uses of Bentonite in Construction – …

Functions and Uses of Bentonite Slurry: Bentonite slurries are known to perform the following pivotal functions: a) Support the excavation by exerting hydrostatic pressure on its walls i.e. to prevent the collapse or …

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Visualization of hydraulic fracturing in compacted bentonite: The roles …

The specimen used in this study was cylindrical with a cave-shaped void, which was prepared by uniaxial compaction. First, the quantity of bentonite powder is determined according to the specimen's dimensions, dry density, and water content. Then, bentonite powder is weighed and placed inside the compaction apparatus for …

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Utilization of Bentonite in Concrete: A Review

bentonite as partial substitution of cement in concrete. This paper reports the overview o f the bento nite. utilization in cement mortar as well as concrete. II. BENTONITE. Bentonite is a cla y ...

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Impact Resistance of Styrene-Butadiene Rubber (SBR) Latex …

Improvements in tensile strength and impact resistance of concrete are among the most researched issues in the construction industry. The present study aims to improve the properties of concrete against impact loadings. ... Latex-Modified Fiber-Reinforced Concrete: The Role of Aggregate Size Materials (Basel). 2022 Feb …

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