Durability of Polymer and Fly Ash Modified Ferro Cement Elements

Bhikshma, V.; Ravandekishore,; Srinivas, Raghunath

doi:10.1016/j.proeng.2011.07.332

Cited by 9 publications

(8 citation statements)

References 4 publications

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“…Fibers create an interlock or a strong mechanical bond with the cementitious matrix, and due to the stress transfer between the fibers and the matrix, the mechanical strength (compressive strength, tensile and flexural strength) of cementitious matrix is substantially increased. The dispersion of fibers in the brittle matrix offer not only convenience and practical means of achieving improvement in many of the engineering properties of the materials such as tensile and flexural strength but also provide advantages in terms of fabrication of products and components [8].…”

Section: Sustainability In Constructionmentioning

confidence: 99%

Experimental and Predictive Mechanical Strength of Fiber Reinforced Cementitious Matrix (Frcm)

Sakthivel¹

2014

geomate

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Fiber Reinforced Cementitious Matrix (FRCM) are sustainable building materials as it uses lesser quantities of natural resources as raw materials for production, when compared to conventional concrete. This study is an attempt to explore the possibility of using crimped mild steel (MS) fibers (12.5 mm length) as reinforcement in cementitious matrix, with sand-cement and water-cement ratio in line with the ACI Codes. From the experimental results, it was found that when the percentage of MS fibers is increased in cement-based mortar from 0.5% to 2.5% of volume of specimens (with 0.5% interval), there is a corresponding increase in the cylinder compressive strength and splitting-tensile strength at 7 and 28 days, and flexural strength at 28 days. There was an increase in compressive strength of 74%, splitting-tensile strength of 38% and flexural strength of 35% at 28 days, when MS fibers of 2.5% was used, when compared to control mortar specimens (with no fibers). Also, the predictive strength models were developed from the experimental data using statistical regression analysis. It was observed that the experimental results of FRCM highly correlate with the predicted values, with minimum prediction error.

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Section: Sustainability In Constructionmentioning

confidence: 99%

Experimental and Predictive Mechanical Strength of Fiber Reinforced Cementitious Matrix (Frcm)

Sakthivel¹

2014

geomate

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“…High-performance cementitious composites with self-compacting characteristics are gaining due importance in meeting the challenges of the modern world [1]. Repair, retrofit, and maintenance operations often require the casting of thin laminates or patches of the material in narrow and inaccessible places, necessitating the utilization of highly flowable cementitious composites [2][3][4]. Construction time can be reduced by using self-compacting concrete (SCC) [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Workability properties of SCC are assessed by evaluating self-compacting mortars and are an essential part of SCC design [39,40]. Different researchers have used SRMs to enhance the fresh and hardened properties of the SCC system [4]. Fly ash and silica fume blend was recommended to produce composites with ultra-high-strength and good rheological properties [12].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Use of Fly Ash and Silica Fume to Produce High-Strength Self-Compacting Cementitious Composites

et al. 2021

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High-performance cementitious composites with self-compacting characteristics are gaining due importance in meeting the challenges of the modern world. This experimental study deals with developing high-strength self-compacting cement mortar composites containing a binary blend of silica fume and fly ash. Seven specimens series were prepared with fly ash (FA), ranging from 17.5% to 25%, and silica fume (SF), from 1.25% to 7.5% of the cement mass. The control specimen powder content consists of 80% ordinary portland cement (OPC), 20% FA, and 0% SF; in the remaining six series of specimens, OPC is kept constant, whereas FA is reduced by 1% and SF is increased by 1% subsequently. Rheological behavior, mechanical properties, and microstructural characteristics of the developed high-performance composites were evaluated. The optimum binary blend for achieving the maximum flow spread and flow rate of the cement mortar is reported as 80% FA and 20% SF. For superior mechanical characteristics, optimum powder content was found as 80% OPC, 17.5% FA, and 2.5% SF. Using the proposed binary blend for construction applications will produce high-strength composites and promote sustainable development due to the use of industrial wastes as OPC replacement.

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“…Inorganic polymer or geopolymers have emerged as novel engineering materials with the potential to form a substantial element of an environmentally sustainable construction industry 11 . Geopolymer materials have attracted a lot of attention for various applications due to their excellent fire resistance, low curing/hardening temperatures, low air and water permeability, and environmental durability 12 . Geopolymer is a combination of the pozzolan (fly ash), activator solution (silicates of sodium), alkali powder(hydroxides of sodium), a high‐range water reducing agent (ligno‐sulphonated normal super plasticizer), and distilled water.…”

Section: Introductionmentioning

confidence: 99%

Corrosion assessment of ferrocement element with nanogeopolymer for marine application

Rajendran¹

2021

Structural Concrete

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Corrosion is the major reason which limits the practical application of ferrocement structures in the marine environment. To protect the thin and strong wire mesh reinforcement, preventive methods are required to be employed. One of such methods implemented in this paper is novel application of geopolymer mortar on the surface of the wire mesh. The microstructural pores present in the highly durable fly ash based geopolymer mortar are further enhanced by using nanomodified fly ash particles to achieve the impermeable surfaces. Effect of alkaline solution concentration on the chloride ion penetration and corrosion has been investigated by using the different concentration of sodium hydroxide solution from 8 to 14 M. From the results, it is noted that for the geopolymer specimens, the chloride ions penetration values of 542.70 Coulombs is observed at 28 days which comes under the category of very low as per ASTM C1202‐10. The chloride ion penetration observed in geopolymer specimen is 17% lesser than ferrocement panel with conventional cement mortar. The time taken for cracking is delayed in the case of ferrocement panel with geopolymer mortar of 10 M concentrated sodium hydroxide solution by thrice the times of specimen with conventional cement mortar. This indicates that the incorporation of nanogeopolymer in ferrocement element not only increased the strength but also its serviceability against cracking and corrosion resulted in the extensive application of ferrocement construction in marine environment.

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Durability of Polymer and Fly Ash Modified Ferro Cement Elements

Cited by 9 publications

References 4 publications

Experimental and Predictive Mechanical Strength of Fiber Reinforced Cementitious Matrix (Frcm)

Experimental and Predictive Mechanical Strength of Fiber Reinforced Cementitious Matrix (Frcm)

Synergistic Use of Fly Ash and Silica Fume to Produce High-Strength Self-Compacting Cementitious Composites

Corrosion assessment of ferrocement element with nanogeopolymer for marine application

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