Assessing the influence of fly ash and polypropylene fiber on fresh, mechanical and durability properties of concrete

Akid, Abu Sayed Mohammad; Hossain, Saif; Munshi, Md. Imtiaz Uddin; Elahi, Manjur A; Sobuz, Md. Habibur Rahman; Tam, Vivian W.Y.; Islam, Md. Saiful

doi:10.1016/j.jksues.2021.06.005

Cited by 36 publications

(21 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison with TGPC samples, HTGPC gives lower sorptivity cofficients. This trend is in agreement with earlier studies using fibres to reduce concrete porosity [45,46]. The concrete samples containing 1% steel fibres and 0.15% polypropylene fibres gives the lowest sorptivity coefficient.…”

Section: Sorptivitysupporting

confidence: 92%

Effect of Hybrid Fibres on the Durability Characteristics of Ternary Blend Geopolymer Concrete

2021

View full text Add to dashboard Cite

The need to develop sustainable concrete in the civil infrastructure industry increases day by day, resulting in new eco-friendly materials such as geopolymer concrete. Geopolymer concrete is one of the eminent alternatives to conventional concrete for sustainable development by reducing the carbon footprint. Ternary blend geopolymer concrete (TGPC) is a sustainable and environmentally friendly concrete produced with three different source materials to form a binder. The main advantage of TGPC is that it possesses densely packed particles of different shapes and sizes, which results in improved properties. This paper deals with the experimental investigations to evaluate the durability properties of plain and hybrid fibre reinforced TGPC. The durability of concrete is defined as the ability to withstand a safe level of serviceability and different environmental exposure conditions without any significant repair and rehabilitation throughout the service life. Conventional concrete is vulnerable to cracking due to its low tensile and durability properties. The TGPC considered in this work consists of fly ash, GGBS and metakaolin as source materials, selected mainly based on the material’s silica and alumina content, shape, size, and availability. The grade of concrete considered was M55. The main variables considered in this study were the proportions of crimped steel fibres (Vf), viz., 0.5% and 1% and proportions of polypropylene fibres (Vp)viz., 0.1%, 0.15%, 0.20% and 0.25%. The durability properties like water absorption, sorptivity, resistance to marine attack, acid attack, sulphate attack, and abrasion were studied in this investigation. The experimental test results were compared with the requirements provided in the standard/literature and found to be well within limits. The study also indicates that the inclusion of fibres in a hybrid form significantly improves the durability parameters of TGPC. The TGPC with 1% steel fibre and 0.15% polypropylene fibre performs better than the other combination of fibres considered in this experimental investigation.

show abstract

Section: Sorptivitysupporting

confidence: 92%

Effect of Hybrid Fibres on the Durability Characteristics of Ternary Blend Geopolymer Concrete

2021

View full text Add to dashboard Cite

show abstract

“…However, after 1%, fiber causes air entrainment and increases permeability. A higher volume of polypropylene fibers causes a higher air content [ 49 ]. Improper mixing of fiber and non-homogeneity of mix may also cause air void content.…”

Section: Resultsmentioning

confidence: 99%

Recycling of Waste Facial Masks as a Construction Material, a Step towards Sustainability

et al. 2022

View full text Add to dashboard Cite

Amid the COVID-19 pandemic, a sudden surge in the production and utilization of disposable, single-use facial masks has been observed. Delinquency in proposal disposal of used facial masks endangers the environment with a new form of non-biodegradable plastic waste that will take hundreds of years to break down. Therefore, there is an urgent need for the resourceful recycling of such waste in an environmentally friendly way. This study presents an efficient solution by using waste masks in fibered or crushed form to produce environmentally friendly and affordable green concrete. This investigation assessed the mechanical and durability properties of waste masks-incorporated concrete. A total of six mixes were prepared for standardized tests to determine compressive strength, split cylinder tensile strength and rapid chloride penetration test (RCPT), and freeze-thaw resistance. The percentage of mask fibers used were 0.5, 1, 1.5, and 2% of concrete by volume, while crushed masks were used at 0.5% only. The mask waste in both forms was found suitable to be used in concrete. One percent of waste mask fibers was found as an optimum value to increase compressive and tensile strength, reduce chloride permeability, and increase freeze-thaw resistance. Besides this, 0.5% crushed mask fiber also performed well, especially for producing less permeable and highly durable concrete. It is thus corroborated that waste masks that increase pollution worldwide can be utilized sustainably to help build green buildings. By reutilizing waste masks to produce improved concrete with better strengths and higher durability, circular economy and sustainability are achieved, along with efficient waste management.

show abstract

“…The reason is mainly due to the special morphological effects of fly ash, with microspheres featuring smooth surfaces, fine particle size and dense texture. Then, the fresh SCC with fly ash would adsorb a small amount of water in the mixing process [35], reducing the internal friction resistance and improving the flowability of the fresh concrete [8,36].…”

Section: Fresh Performancementioning

confidence: 99%

The Optimization of Mix Proportion Design for SCC: Experimental Study and Grey Relational Analysis

et al. 2022

View full text Add to dashboard Cite

The optimization of mix proportions based on the targeted fresh and hardened performances of self-compacting concrete (SCC) is a foundation for its transition from laboratory research to industrial production. In this paper, the mix proportions of various SCC mixtures were designed by the absolute volume method with changes in the content of river sand and manufactured sand, the content of fly ash and granulated ground blast furnace slag (GGBS) and the maximum particle sizes of coarse aggregates. This experimental study was carried out to verify the workability, density and cubic compressive strength of SCC. The results show that SCC demonstrated good performance with appropriate mix proportions of manufactured sand and river sand. A hybrid effect of fly ash and GGBS appeared on the fresh performance of SCC with a constant strength, and the coarse aggregate with a smaller maximum particle size was beneficial to the workability but detrimental to the compressive strength of SCC. Finally, the optimization of the mix proportion of SCC was evaluated by grey relational analysis, in which the weight of the indicators was determined by the entropy method to improve the evaluation credibility. As a result, the optimal mix proportions of SCC were selected.

show abstract

Assessing the influence of fly ash and polypropylene fiber on fresh, mechanical and durability properties of concrete

Cited by 36 publications

References 23 publications

Effect of Hybrid Fibres on the Durability Characteristics of Ternary Blend Geopolymer Concrete

Effect of Hybrid Fibres on the Durability Characteristics of Ternary Blend Geopolymer Concrete

Recycling of Waste Facial Masks as a Construction Material, a Step towards Sustainability

The Optimization of Mix Proportion Design for SCC: Experimental Study and Grey Relational Analysis

Contact Info

Product

Resources

About