Rheological properties and hydration behavior of portland cement mortars containing calcined red mud

Ribeiro, Daniel Véras; Silva, A. S.; Labrincha, J.A.; Morelli, M. R.

doi:10.1139/cjce-2012-0230

Cited by 40 publications

(20 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As shown in Figure 7, the reference Portland cement does not qualify as a pozzolanic material because the cement alone is not pozzolanic. It is the addition of the pozzolan in the presence of water that binds the calcium hydroxide that is formed by the cement hydration and lowers the calcium oxide content of the liquid phase of the cement paste 8,9,17 . The CaO and OH -ion concentrations decrease in the solution when SCBA is added, and a clear pozzolanic action is observed for mixtures containing SCBA independent of the calcination temperature of the ash.…”

Section: Verification Of Pozzolanic Activity By Chemical Test Methodsmentioning

confidence: 99%

Effect of Calcination Temperature on the Pozzolanic Activity of Brazilian Sugar Cane Bagasse Ash (SCBA)

Ribeiro

Morelli

2014

Mat. Res.

View full text Add to dashboard Cite

This study evaluated the feasibility of using sugar cane bagasse ash (SCBA), a by-product of the sugar cane ethanol industry, obtained under controlled calcination as a partial replacement for Portland cement in mortars. Materials with pozzolanic characteristics may be used to partially replace cement in mortars or concrete and are known to provide durability to the products. Initially, TG/DTA curves of the sugar cane bagasse were conducted to define suitable calcination temperatures (500°C, 600°C and 700°C), and tests were conducted to characterize the physical-chemical parameters of the SCBA and the pozzolanic activity according to . The results showed the technical feasibility of using the SCBA as a pozzolanic material in construction, which would provide an alternative to proper disposal for this waste while providing products with high technical performance.

show abstract

Section: Verification Of Pozzolanic Activity By Chemical Test Methodsmentioning

confidence: 99%

Effect of Calcination Temperature on the Pozzolanic Activity of Brazilian Sugar Cane Bagasse Ash (SCBA)

Ribeiro

Morelli

2014

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…Red mud used as a partial replacement of 25 %, 50 % of cement, which shown 18 %, 36 % of lesser compressive strength of mortar with reference to the controlled sample after 28 days curing [45]. The enhancement of strength at early age is, because of rate hydration is more in the red mud based concrete at an early age [46][47][48][49]. Another study Tsakiridis et al, (2004), reported that reason for increasing strength at early ages is red mud is increased hydration process rapidly due to filling effect of red mud particle in the concrete [26].…”

Section: Red Mud Used In Cement Productionmentioning

confidence: 99%

A State of the Art on Red Mud as a Substitutional Cementitious Material

Venkatesh¹,

Madduru²,

Nerella³

2019

ACSM

View full text Add to dashboard Cite

Red mud is a highly alkaline solid waste produced from the alumina refinery plants. Every year more than 300 million tons of red mud is producing throughout world. Disposal of a large quantity of red mud is very expensive and it creates contamination of neighbor lands, air and water bodies. Using red mud as a sustainable cementitious material in concrete is highly appreciable, because concrete is a second largest using material after water. Moreover, reduce the negative effect on environment due to red mud disposal as well as cement industries. The present paper conducted a critical review on bayer process of red mud, physical and chemical properties of red mud. And also workability, mechanical, durability and microstructure characterization of red mud when used in concrete as sustainable cementitious material. In the red mud iron oxide and alumina oxide are presented abundantly. Red mud accelerates the heat of hydration in concrete and it leads to strength enhancement in early ages. Increases the quantity of red mud in concrete reduces the workability but increases the strength of concrete. However, the chemical composition of red mud and its particle size helps to improve the durability property of concrete. Red mud offers more capable to arrest the chloride ions and other ions diffusion into concrete. Red mud minimizes the micro cracks and voids present in concrete by its particles size as well as bonding nature with other materials up to certain dosage of red mud used in concrete.

show abstract

“…The presence of bauxite can improve the strength properties and workability of cementituos system due to its Pozzolanic reactivity, reacting with calcium hydroxide and producing additional gel (Soroshian and Won, 1995). According to Ribeiro et al (2013), addition of bauxite changed the hydration process, setting time, and workability, and signifi cantly altered important properties of Portland cement.…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

Silica (SiO2) Content on Mechanical Properties of Cement-Bonded Particleboard Manufactured from Lignocellulosic Materials

2018

View full text Add to dashboard Cite

The infl uence of Nano-SiO 2 (NS) content and lignocellulosic material addition on hydration behavior of cement paste was studied through measurement of hydration temperature, initial and fi nal setting time of cement paste and compressive strength of hardened cement paste. Besides, the amount of NS, particle size of reed and bagasse as lignocellulosic materials and bagasse to reed particles weight ratio were selected as manufacturing variables for cement-bonded particleboard (CBPB) each at fi ve levels. The relationships between independent parameters and output variables (modulus of rupture (MOR), modulus of elasticity (MOE) and internal bonding (IB)) were modeled using response surface methodology (RSM) based on mathematical model equations (second-order multiple linear regression model) by computer simulation programming. The results indicated that cement pastes containing 3 wt.% Nano-SiO 2 content mixed with milled reed or bagasse particles enhanced maximum hydration temperature; however, the time of reaching the main rate peak shortened. Besides, the increase of SiO 2 replacement shortened the setting time. On the other hand, using reed particles, initial and fi nal setting times of cement prolonged, while bagasse particles shortened initial and fi nal setting times. Analysis of variance (ANOVA) was performed to determine the adequacy of the mathematical model and its respective variables. The interaction effect curves of the independent variables obtained from simulations showed a good agreement between the measured MOR, MOE and IB of CBPB and predicted values obtained by the developed models, and hence, the proposed concept was verifi ed.

show abstract

Rheological properties and hydration behavior of portland cement mortars containing calcined red mud

Cited by 40 publications

References 29 publications

Effect of Calcination Temperature on the Pozzolanic Activity of Brazilian Sugar Cane Bagasse Ash (SCBA)

Effect of Calcination Temperature on the Pozzolanic Activity of Brazilian Sugar Cane Bagasse Ash (SCBA)

A State of the Art on Red Mud as a Substitutional Cementitious Material

Silica (SiO2) Content on Mechanical Properties of Cement-Bonded Particleboard Manufactured from Lignocellulosic Materials

Contact Info

Product

Resources

About