High performance cementitious composite from alkali-activated ladle slag reinforced with polypropylene fibers

Nguyen, Hoang; Carvelli, Valter; Adesanya, Elijah; Kinnunen, Päivö; Illikainen, Mirja

doi:10.1016/j.cemconcomp.2018.03.024

Cited by 76 publications

(29 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fracture toughness obtained by the double-K model is about 15% lower in the case of the reference composite and composites with a microfiber content of 15% and more. The fracture toughness of the reference AAS composite is comparable with values gained for alkali-activated slag-based composite with similar compressive strength that have been published in the literature [36].…”

Section: Resultssupporting

confidence: 81%

See 1 more Smart Citation

Components of the Fracture Response of Alkali-Activated Slag Composites with Steel Microfibers

et al. 2019

View full text Add to dashboard Cite

Knowledge of the mechanical and primarily fracture parameters of composites with a brittle matrix is essential for the quantification of their resistance to crack initiation and growth, and also for the specification of material model parameters employed for the simulation of the quasi-brittle behavior of structures made from this type of composite. Therefore, the main target of this paper is to quantify the mechanical fracture parameters of alkali-activated slag composites with steel microfibers and the contribution of the matrix to their fracture response. The first alkali-activated slag composite was a reference version without fibers; the others incorporated steel microfibers amounting to 5, 10, 15 and 20% by weight of the slag. Prism specimens with an initial central edge notch were used to perform the three-point bending fracture tests. Load vs. displacement (deflection at midspan) and load vs. crack mouth opening displacement diagrams were recorded during the fracture tests. The obtained diagrams were employed as inputs for parameter identification, the aim of which was to transfer the fracture test response data to the desired material parameters. Values were also determined for fracture parameters using the effective crack model, work-of-fracture method and double-K fracture model. All investigated mechanical fracture parameters were improved by the addition of steel microfibers to the alkali-activated matrix. Based on the obtained results, the addition of 10 to 15% of microfibers by weight is optimal from the point of view of the enhancement of the fracture parameters of alkali-activated slag composite.

show abstract

Section: Resultssupporting

confidence: 81%

“…The critical stress intensity factor was higher in the case of geopolymer compared to OPC concrete with the same compressive strength. Ngyuen et al [36] ascertained that the addition of polypropylene fibers to AAS mortar leads to an increase in fracture energy and fracture toughness compared to mortar without fibers.…”

Section: Introductionmentioning

confidence: 99%

Components of the Fracture Response of Alkali-Activated Slag Composites with Steel Microfibers

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Conventional materials of construction like cement, sand and granite are highly pre-requisites in construction industry, of which concrete is the basic and widely used cementitious material in civil engineered structures. Since concrete is far more in need and is amply consumed industrially material world-wide, its versatile nature, inevitable dependence and economic feasibility to quench the requirements has placed it as the top most building material [1][2][3]. With the development around the globe, the use, production and the environmental hazardous in making of cement industrially has surpassed an alarming limits which, if other alternative and environmental friendly materials are not made in practice, would be greatly detrimental to the environment, and the living beings as a result; because cement manufacturing contributes over 5% of global CO2 emissions which with more dependence would augment [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rice Husk Ash and Water-Cement Ratio on Strength of Concrete

et al. 2018

View full text Add to dashboard Cite

In present status quo, number of researcher are working on waste materials as potential supplement for any of the constituent of concrete to cope with sustainable development. As, the ingredients which constitute the body and give strength to concrete are natural available limited material and has to deplete one day. Thus, there is desperately need of alternate that may replace the limited natural resources. In this regard, this study focuses the rice husk ash (waste stuff) as partial replacement of cement and its possible impact on strength of concrete. In addition, this research work also this research work is conducted to investigate the effect of water-cement ratio on the strength of concrete at 10% partially replacement of Rice husk ash (RHA) by the weight of cement. RHA is a mineral admixture obtained by burning husk at certain temperature. Since as per pervious researches, the physical and chemical properties of RHA are very reactive Pozzolans and possess binding properties so can be used as cement supplement. Therefore, for laboratory experimental work, total 144 cubical and 72 cylindrical. In this research, number of concrete specimens were cast and tested at 1:2:4 mix ratio with various w/c ratios i.e. 0.45, 0.50 and 0.60. Further, at each specified water-cement ratio, two mechanical properties (compressive and splitting tensile strength) were determined in Universal Testing Machine (UTM). These physical properties of concrete were investigated at 7, 14, 28 and 56 days curing period. The experimental results show that the compressive strength gets increased up to 14.51% and tensile splitting test strength increased up to 10.71% at the w/c ratio of 0.45. The workability of plain fresh concrete at all w/c ratios is slightly greater than the workability of concrete blended with 10% RHA. Thus, RHA improves the properties of concrete when used in specific amount. As a result, it can reduce the overall cost of construction and it will reduce the adverse environmental effect.

show abstract

“…e commercially viable products manufactured using GFRP include mostly automotive parts, bathtubs, printed circuit boards, boats, and aerospace components. Researchers have also attempted to integrate fiber reinforcement in the concrete material, referred to as fiber-reinforced concrete (FRC) [1,[13][14][15][16][17][18][19][20]. FRC or GFRP fabricated sheets are retrofitted on beams, columns, and slabs to prevent the structure against corrosion as well as enhancing its longevity [21].…”

Section: Introductionmentioning

confidence: 99%

“…FRC or GFRP fabricated sheets are retrofitted on beams, columns, and slabs to prevent the structure against corrosion as well as enhancing its longevity [21]. Fibers that have been successfully used in improving the strength and longevity of concrete infrastructures are glass [1,7,10,11,18,22,23], steel [1,10,11,14,15,17,24], carbon fibers [24][25][26][27][28], and polypropylene fibers [13,15,17,29]. In particular, flexural and shrinkage properties have shown significant improvements with the addition of fibers in cement [16,18,22,30].…”

Section: Introductionmentioning

confidence: 99%

Development of FRC Materials with Recycled Glass Fibers Recovered from Industrial GFRP-Acrylic Waste

Patel

Gupta

Garg

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Fiber-reinforced concrete (FRC) and engineered cementitious composite materials have demonstrated promising requisite in construction industry owing to its superior mechanical and durability properties. In this study, a sustainable approach was taken, i.e., to use industry waste as a reinforcement with improved interfacial bonding leading to enhanced mechanical performance of FRC. An efficient in situ recycling process allowed the authors to extract glass fibers from glass fiber-reinforced polymer acrylic waste. Concrete mixes with low fiber dosages including 0.1%, 0.2%, and 0.3% (by volume) of recycled as well as virgin glass fibers were prepared. The slump of concrete was maintained ∼150 mm by using high water-reducing admixture (HWRA). Notably, lower amount of HWRA was required for raw glass fibers vis-à-vis recycled ones due to its hydrophobic nature. Overall, FRC enclosing 0.3% recycled glass fiber demonstrated >20% enhancement in compressive, split tensile, and flexural strength as compared to control (after 28 days of curing), also supported by morphological analysis.

show abstract

High performance cementitious composite from alkali-activated ladle slag reinforced with polypropylene fibers

Cited by 76 publications

References 58 publications

Components of the Fracture Response of Alkali-Activated Slag Composites with Steel Microfibers

Components of the Fracture Response of Alkali-Activated Slag Composites with Steel Microfibers

Effect of Rice Husk Ash and Water-Cement Ratio on Strength of Concrete

Development of FRC Materials with Recycled Glass Fibers Recovered from Industrial GFRP-Acrylic Waste

Contact Info

Product

Resources

About