Utilization and performance evaluation of molasses as a retarder and plasticizer for calcium sulfoaluminate cement-based mortar

Pudasainee, Deepak; Gupta, Rajender; Liu, Wei Victor

doi:10.1016/j.conbuildmat.2020.118201

Cited by 30 publications

(5 citation statements)

References 55 publications

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“…It is very important to use repair materials to restore concrete structures' performance [3,4]. At present, due to its fast setting time, high early strength, and bond strength with the old concrete, magnesium phosphate cement (MPC) is often used for the fast repairing of the concrete structure [5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Various Curing Conditions on Volume Stability of Magnesium Phosphate Cement

Lai

Deng

et al. 2021

Advances in Materials Science and Engineering

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Magnesium phosphate cement (MPC) is an excellent repair material for civil and road engineering, but its volume stability under various environmental conditions significantly influences these applications. In this study, the volume stability of MPC under different curing conditions (e.g., air, standard, and water curing) is investigated. Moreover, the phases, weight loss, microstructure, and pore structure of the samples have been determined by X-ray diffraction, thermogravimetry, scanning electron microscopy, and Brunnauer–Emmet–Teller method. The results show that MPC will shrink by 8 × 10−4 under air-curing conditions. At the same time, MPC will expand by 9 × 10−4 under water-curing and standard curing conditions, which means that curing conditions influence the volume stability of MPC. Not only that, compared with air-curing conditions, the compressive strength of MPC under standard curing and water-curing conditions will decrease by 30% and 60%, respectively, which implies that greater humidity will reduce the mechanical properties of the repair material. Therefore, air curing is the best curing condition for MPC. To get a better repair effect, the environment should be avoided as much as possible in a humid state. The microscopic analysis results show that the volume expansion of MPC is related to hydration products, and the volume shrinkage occurs owing to drying shrinkage caused by internal moisture evaporation.

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Section: Introductionmentioning

confidence: 99%

Effects of Various Curing Conditions on Volume Stability of Magnesium Phosphate Cement

Lai

Deng

et al. 2021

Advances in Materials Science and Engineering

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“…The sugarcane molasses used in this study were purchased from Jinqianwan Molasses Co., Ltd. (located in Liuzhou City, Guangxi Province, China). The composition and content of sugarcane molasses are listed in Table 1 [18,19]. (2) Coal dust samples…”

Section: Materials (1) Molassesmentioning

confidence: 99%

“…The use of industrial byproducts to prepare dust suppressants is an effective method for reducing the cost associated with developing chemical suppressants. Molasses is a by-product of sugar production and is produced worldwide [ 18 , 19 ]. Many studies have shown that molasses can effectively bond to particulate matter [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…Molasses is a by-product of sugar production and is produced worldwide [ 18 , 19 ]. Many studies have shown that molasses can effectively bond to particulate matter [ 19 , 20 , 21 ]. For example, Benk and Coban [ 22 ] showed that molasses can substitute cement as a binder material to produce lightweight and heat-insulating bricks.…”

Section: Introductionmentioning

confidence: 99%

“…A similar result was reported by Kotta et al [ 21 ], who found that the addition of molasses could significantly increase the strength of iron ore pellets. A study conducted by Huang et al [ 19 ] showed that molasses could be utilized as a retarder for calcium sulfoaluminate cement-based mortars. Furthermore, focusing on the prominent binder properties of molasses, a few researchers have explored the possibility of using molasses as a rock dust suppressant.…”

Section: Introductionmentioning

confidence: 99%

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Suppression Characteristics and Mechanism of Molasses Solution on Coal Dust: A Low-Cost and Environment-Friendly Suppression Method in Coal Mines

Liu

Wang

Jin

et al. 2022

IJERPH

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Coal dust pollution poses a serious public health threat. This study aimed to investigate the feasibility of creating a coal dust suppressant using molasses, a byproduct of the sugar industry. We studied the effects of a molasses solution of varying concentrations (i.e., ranging from 0% (pure water) to 40%) on the moisture, bonding, and wind erosion properties of coal dust. Overall, the effectiveness of the molasses increased with their concentration, and it manifested itself in the following way: (1) the molasses improved the anti-evaporation ability of wet coal dust. For example, the evaporation mass of the coal dust wetted using a molasses solution decreased by 82.8%; (2) molasses effectively agglutinated coal dust; (3) molasses can effectively decrease the surface tension and increase the viscosity of the wetting solution. The surface tension of the molasses solution reached 41.37 mN/m and the viscosity increased to 6.79 mPa·s; (4) molasses can significantly suppress the wind erosion of deposited coal dust, with its wind erosion mass decreasing 99.1%; finally, (5) the effectiveness of molasses at suppressing coal dust was discussed at a molecular level. This study highlights the feasibility of a low-cost and environment-friendly dust suppressant in coal mines.

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Extending blending proportions of ordinary Portland cement and calcium sulfoaluminate cement blends: Its effects on setting, workability, and strength development

Pudasainee

Gupta

Liu

2021

Front. Struct. Civ. Eng.

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Utilization and performance evaluation of molasses as a retarder and plasticizer for calcium sulfoaluminate cement-based mortar

Cited by 30 publications

References 55 publications

Effects of Various Curing Conditions on Volume Stability of Magnesium Phosphate Cement

Effects of Various Curing Conditions on Volume Stability of Magnesium Phosphate Cement

Suppression Characteristics and Mechanism of Molasses Solution on Coal Dust: A Low-Cost and Environment-Friendly Suppression Method in Coal Mines

Extending blending proportions of ordinary Portland cement and calcium sulfoaluminate cement blends: Its effects on setting, workability, and strength development

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