Investigation of Mechanical and Durability Behaviour of High Strength Cementitious Composites Containing Natural Zeolite and Blast-furnace Slag

Toklu, Kenan

doi:10.1007/s12633-020-00866-8

Cited by 9 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, when the specimens were exposed to 400 °C for 1 h, strength reduction of less than 5% was observed which is almost negligible. This effective performance of optimized mix was due to the inefficient dehydration of the developed C-S-H gel and the presence of GGBS in the optimized mix [59][60][61][62]. From the previous works of literature, it was observed that the use of GGBS-influenced concrete possesses the capacity to withstand up to the temperature of 600 °C [10,55,56].…”

Section: Elevated Temperature Testingmentioning

confidence: 99%

Thermal and durability characteristics of optimized green concrete developed using slag powder and pond ash

Maheswaran,

Chellapandian,

Arunachelam

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

Due to the vast development in the infrastructure section, the production of cement based concrete is a major driving source for the increased global warming and extensive deployment of natural resources such as river sand. To reduce and mitigate these adverse effects, industrial by-products can be effectively used either in partial or complete levels to replace conventional materials such as cement, river sand, etc. without compromising the strength and durability characteristics of concrete. This research work focuses on the experimental investigation of the thermal properties, strength, durability and microstructure analysis of optimized green concrete with pond ash and ground granulated blast-furnace slag (GGBS). The novelty of the proposed work lies in the investigation of the thermal and durability characteristics of sustainable green concrete with GGBS and pond ash as a partial replacement for cement and fine aggregate respectively. An optimum mix ratio obtained from the material characterization of 16 trail mixes was tested for mechanical properties, durability and thermal characterization. Moreover, the microstructure analysis of the optimized mix was performed using Scanning Electron Microscope (SEM) to overview the chemical constituents, bonding of molecules at the interfacial transition zone (ITZ), the effect of elevated temperature, etc. Results from the trail mixes revealed that the replacement of 30% GGBS and 20% pond ash increased the compressive strength by 8% at 28 days curing when compared to the control mix. In addition, a detailed multilinear regression analysis was performed and a new equation was proposed to determine the compressive strength of concrete with GGBS and pond ash. The predictions obtained from the proposed equation showed a good match with the benchmark experiments.

show abstract

Section: Elevated Temperature Testingmentioning

confidence: 99%

Thermal and durability characteristics of optimized green concrete developed using slag powder and pond ash

Maheswaran,

Chellapandian,

Arunachelam

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…From a recent study, it is con rmed that over tons of cement is produced every year, which incorporates around 8% of the emission of carbon products globally [1][2][3]. To overcome this lack of sustainability, several pieces of research are going on in the development for the substitution or partial replacement for this binding material, replacing it with the supplementary cementitious materials such as rice husk ash, y ash, silica fume, and ground granulated blast furnace slag (GGBS), etc., are used which improvises the fresh and hardened properties of concrete [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Strength, Durability and Thermal Characteristics of Optimized Green Concrete Developed using Ground Granulated Blast Furnace Slag and Pond Ash

Hari¹,

Maheswaran

Chellapandian³

et al. 2022

Preprint

View full text Add to dashboard Cite

This research work focuses on the experimental investigation of the thermal properties, strength, durability and microstructure analysis of optimized green concrete developed using pond ash and ground granulated blast-furnace slag (GGBS). The objective of the study is to understand the effect of partial replacement of fine aggregate and cement (OPC) using pond ash and GGBS respectively. An optimum mix ratio for the replacement of pond ash and GGBS was determined from the material characterization of 16 trail mixes. Then, the optimized concrete mix was tested for mechanical properties, durability and thermal characterization. Moreover, the microstructure analysis of the optimized mix was performed using Scanning Electron Microscope (SEM) to overview the chemical constituents, bonding of molecules at interfacial transition zone (ITZ), the effect of elevated temperature, etc. In addition, a detailed multilinear regression analysis was performed and a new equation was proposed to determine the compressive strength of concrete with GGBS and pond ash. The predictions obtained from the proposed analytical equation showed a good match with the test results.

show abstract

“…Mineral admixtures have an important influence on the working properties of cement mortar [8,9], mechanical properties [10,11], and durability [12][13][14]. At present, the mineral admixtures that are widely used are mainly fly ash [15], slag [16], silica fume [17], and limestone [18], and research on coal gangue is rare.…”

Section: Introductionmentioning

confidence: 99%

Mechanism on Activation of Coal Gangue Admixture

Chen

Guan

Zhu

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

Coal gangue, an industrial waste, is rich in silicon and aluminum phase and may be used as a mineral admixture in concrete after moderately stimulating activity, allowing for efficient solid waste utilization. This study used a mortar strength and activity evaluation method to investigate single or compound activation methods to find the optimum activation method of coal gangue. FLIR, XRD, and SEM were used to investigate the activation mechanism of different modes, providing a theoretical foundation for the study of coal gangue as a concrete admixture. Results showed that mechanical ball milling, microwave, and chemical activator could activate coal gangue, and the composite activation effect was the best. The fineness of the coal gangue powder was more than 300 mesh, according to the optimal compounding method. Accordingly, the particle surface was smooth, the internal defects were reduced, and the microwave irradiation temperature was 700°C–800°C, causing the coal gangue particles to form a bonding surface and gradually agglutinate and densify. Meanwhile, the layered structure of kaolin minerals was destroyed, and a significant amount of glassy active SiO2 and Al2O3 was produced, enhancing the gel ability and activity of coal gangue. Finally, 8% Ca(OH)2 was added in the production of mortar specimens, which increased the alkalinity of the slurry, stimulated the rapid cracking and secondary hydration of the coal gangue, and enhanced the strength of mortar. At this time, the activity rate of coal gangue powder reached the highest, which was 90.5%.

show abstract

Investigation of Mechanical and Durability Behaviour of High Strength Cementitious Composites Containing Natural Zeolite and Blast-furnace Slag

Cited by 9 publications

References 26 publications

Thermal and durability characteristics of optimized green concrete developed using slag powder and pond ash

Thermal and durability characteristics of optimized green concrete developed using slag powder and pond ash

Strength, Durability and Thermal Characteristics of Optimized Green Concrete Developed using Ground Granulated Blast Furnace Slag and Pond Ash

Mechanism on Activation of Coal Gangue Admixture

Contact Info

Product

Resources

About