Study of the impact of bentonite on the physico-mechanical and flow properties of cement grout

Mesboua, Noureddine; Benyounes, Khaled; Benmounah, Abdelbaki

doi:10.1080/23311916.2018.1446252

Cited by 50 publications

(21 citation statements)

References 31 publications

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“…Thus, it is observed that the replacement by weight of OPC by 10% CB provided the lowest strength reduction and the most desirable SAI, as per the standard requirement of ASTM C618-19 [28]. This finding is in good agreement with the previous studies [24,34].…”

Section: Compressive Strengthsupporting

confidence: 88%

Compressive strength and durability performance of mortar containing palm oil boiler clinker aggregate, rice husk ash, and calcium bentonite

Kueaket¹,

Tonnayopas²

2021

J Appl Eng Science

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The utilization of local waste by-products as a building material has attracted great attention for an environmental sustainability and become a fundamental part of sustainable construction. In this experimental research, the local palm oil industrial waste and agricultural waste are utilized for the green mortar production. To examine the compressive strength and the durability performance of the green mortar mixtures, Palm oil boiler clinker (POBC) was used as a substitution material for natural fine aggregate. An ordinary Portland cement was partially replaced by rice husk ash (RHA) and calcium bentonite (CB) in the proportion of 10%, 20%, and 30% by weight of cement. The compressive strength, water absorption, porosity, durability against sulphuric acid and sodium sulphate solutions, and microstructures of the POBC mortar mixtures were evaluated at the curing age of 7, 28, and 56 days. The experimental results revealed that the compressive strength, the water absorption, the porosity, and the durability characteristic of POBC mortar incorporating rice husk ash and calcium bentonite were improved by long-term curing. Furthermore, the 56-day’s POBC mortar incorporating up to 30% of rice husk ash and 10% of calcium bentonite yielded the superior resistance to sulphuric acid and sodium sulphate attacks.

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Section: Compressive Strengthsupporting

confidence: 88%

Compressive strength and durability performance of mortar containing palm oil boiler clinker aggregate, rice husk ash, and calcium bentonite

Kueaket¹,

Tonnayopas²

2021

J Appl Eng Science

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“…The peaks of calcium hydroxide (CH) and tobermorite, which is a crystalline form of calcium silicate hydrate mineral (C–S–H) [30], were analyzed at 18°, 28.5°, 74° (2ϴ), and 32.5° (2ϴ), respectively. Figure 10 demonstrates XRD patterns of mix containing BT and FA individually and collectively [18].…”

Section: Resultsmentioning

confidence: 99%

“…Substation of 30% BT as cement replacement showed a reduction in the water absorption of concrete [16]. Mesboua et al [18] reported a reduction in the workability and compressive strength in BT-cement grout.…”

Section: Introductionmentioning

confidence: 99%

Thermal, Physico-Chemical, and Mechanical Behaviour of Mass Concrete with Hybrid Blends of Bentonite and Fly Ash

et al. 2018

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Mass concrete has been commonly known for its thermal stresses which arise due to the entrapment of hydration temperature susceptible to thermal cracking. The utilization of mineral additives is a promising and widely adopted technique to mitigate such effects. This paper presents the thermal, physico-chemical, mechanical, and morphological behaviour of mass concrete with blends of bentonite (BT) and fly ash (FA). Apart from the rise in temperature due to hydration, the compressive strength, ultrasonic pulse velocity (UPV), differential thermal analysis (DTA), thermo-gravimetric analysis (TGA), X-ray diffraction (XRD) analysis, and microstructure were studied. The results of this study revealed that the substitution of BT and FA significantly improved the compressive strength and development rate of UPV in the mass concrete samples. The FA concrete (FC) specimen presented the lowest temperature during the peak hours compared to all other concrete mixes studied in this research. Bentonite concrete (BC) was also found to be more effective in controlling the escalation of temperature in mass concrete. Scan electron microscopy (SEM) micrographs presented partially reacted FA particles in a mix. XRD and DTA analysis indicated that the concentration of calcium hydroxide (CH) declined by substituting FA and BT, specifically in ternary blends, which was due to the dilution effect and consumption of CH through the pozzolanic reaction.

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“…Furthermore, the reduction in the water absorption was also found in the specimen containing up to 10% bentonite. This is due to the micro-filling effect of very fine-grain bentonite that can improve the particle packing of binder and reduce the water to binder ratio (Ahmad et al, 2011;Mesboua et al, 2018). However, an adverse effect of more bentonite contents could be attributed to the unreacted bentonite particles within the cement matrix absorbed more water, thus the water absorption of specimen containing more bentonite increased (Ahmad et al, 2011).…”

Section: Water Absorptionmentioning

confidence: 99%

Sustainable mortar and concrete made from palm oil boiler clinker aggregate comprising rice husk ash and calcium bentonite: Compressive strength and durability assessment

Kueaket¹,

Tonnayopas²

2021

j.appsci

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This research was conducted to assess the performances of mortars and concretes made from palm oil boiler clinker aggregate (POBC) blending with rice husk ash (RHA) and calcium bentonite (CB). These blends were used to substitute of ordinary Portland cement (OPC) in the combined proportions of 5wt%CB+5wt%RHA, 5wt%CB+15wt%RHA, 15wt%CB+5wt%RHA, 10wt%CB+20wt%RHA, and 20wt%B+10wt%RHA. The POBC mortars were examined for compressive strength, water absorption, sulfuric acid resistance, and microstructural characterization at the age of 7, 28, and 56 days. Subsequently, the POBC concretes were tested for rapid chloride ion permeability and capillary absorption at 28 and 56 days of curing ages. As a result, the 56-day POBC mortar with the optimum blending of 5% CB and 15% RHA provided the greatest compressive strength of 48 MPa as well as revealed denser microstructure observed under scanning electron microscope (SEM) and greater durability against sulfuric acid attack which surpassed those of the POBC mortar without CB and RHA. Proportionately, the incorporation of 5-10% CB with 15-20% RHA to POBC concrete cured up to 56 days possessed greater durability performances by reducing the chloride ion permeability from moderate to very low ranges as well as lessening capillary absorption. The practical implications of this study are that the POBC could be potentially used in the building sector as a substitute to the conventional aggregates. In addition, the use of CB and RHA could be possibly replaced cement in the optimum proportions without compromising the strength and durability to produce efficiently sustainable POBC mortar and concrete.

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Study of the impact of bentonite on the physico-mechanical and flow properties of cement grout

Cited by 50 publications

References 31 publications

Compressive strength and durability performance of mortar containing palm oil boiler clinker aggregate, rice husk ash, and calcium bentonite

Compressive strength and durability performance of mortar containing palm oil boiler clinker aggregate, rice husk ash, and calcium bentonite

Thermal, Physico-Chemical, and Mechanical Behaviour of Mass Concrete with Hybrid Blends of Bentonite and Fly Ash

Sustainable mortar and concrete made from palm oil boiler clinker aggregate comprising rice husk ash and calcium bentonite: Compressive strength and durability assessment

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