Journal ArticleDOI
Roles of water film thickness and fibre factor in workability of polypropylene fibre reinforced mortar
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In this article, a new model is developed whereby the workability attributes are each expressed as a single variable function of the product of a linear function of WFT and an exponential function of FF.Abstract:
For plain mortar without fibres, it has been found that its fresh properties are governed mainly by the water film thickness (WFT). For fibre reinforced mortar with fibres added, it has been suggested that the effects of the fibres may be evaluated in terms of a fibre factor (FF) combining the fibre volume and aspect ratio together. In two previous studies on the workability of polypropylene (PP) fibre reinforced mortar, the combined effects of WFT and fibre volume and the combined effects of WFT and fibre length have been separately studied. Herein, additional tests with both the fibre volume and fibre length varying simultaneously have been carried out to generate more data for evaluating the combined effects of WFT, fibre volume and fibre length. Based on the test results, a new model is developed whereby the workability attributes are each expressed as a single-variable function of the product of a linear function of WFT and an exponential function of FF. By this model, the roles of WFT and FF are revealed and the workability may be estimated for preliminary design of PP fibre reinforced mortar.read more
Citations
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Journal ArticleDOI
Performance evaluation of polypropylene fibre reinforced recycled aggregate concrete
TL;DR: In this paper, the influence of incorporation of microfilament type polypropylene fibres into low strength recycled aggregate concrete on the basis of number of parameters such as compressive strength, split tensile strength, flexural strength, modulus of elasticity and non-destructive parameters was examined.
Journal ArticleDOI
Effect of paste volume on fresh and hardened properties of concrete
TL;DR: In this paper, the effect of CPV on various performance attributes of concrete at fresh and hardened states was evaluated by varying the CPV from 26% to 32% at two different W/C ratios.
Journal ArticleDOI
Fibre-Reinforced Foamed Concretes: A Review.
Mugahed Amran,Roman Fediuk,Nikolai Vatin,Yeong Huei Lee,Gunasekaran Murali,Togay Ozbakkaloglu,Sergey Klyuev,Hisham Alabduljabber +7 more
TL;DR: This paper is the first comprehensive review of the use of man-made and natural fibres to produce fibre-reinforced foamed concrete (FRFC), and it was found that the rheological properties of the FRFC mix are influenced by the properties of both fibres and foam.
Journal ArticleDOI
Fiber length effect on strength properties of polypropylene fiber reinforced cemented tailings backfill specimens with different sizes
TL;DR: In this paper, the effect of fiber length on strength properties of CTB samples with different specimen sizes was investigated. But the results were limited to the case of C-40 CTB and C-70 CTB.
Journal ArticleDOI
Analysis of internal structure behavior of fiber reinforced cement-tailings matrix composites through X-ray computed tomography
TL;DR: In this paper, the changes in the internal structure of cement-tailings matrix composites (CTMC) with diverse dosages of polypropylene, polyacrylonitrile and glass fibers were analyzed.
References
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Book
Fibre Reinforced cementitious Composites
Arnon Bentur,Sidney Mindess +1 more
TL;DR: In this article, the mechanical behaviour of fibre reinforced cementitious materials with different fibres is investigated. But they do not discuss the properties of different types of fiber reinforced cement composites.
PatentDOI
Highly dispersed carbon nanotube-reinforced cement-based materials
TL;DR: In this paper, a composite cement material is prepared from cement material and carbon nanotubes, wherein the carbon-nanotubes are present from about 002 wt % to about 1 0 % based on the weight of the cement material.
Journal ArticleDOI
Fiber-reinforced concrete: An overview after 30 years of development
TL;DR: In this article, a rhetorical discussion on the subject of fiber-reinforced concrete, FRC, is presented, which is intended as an overview of the types of commercially available FRCs and how they work.
Journal ArticleDOI
The influence of mineral admixtures on the rheology of cement paste and concrete
TL;DR: In this paper, rheological tests on cement paste were used to successfully select the type and dosage of mineral admixtures that improved concrete workability, and the conclusion reached based on the cement paste tests were validated by concrete slump tests.
Journal ArticleDOI
Fibre reinforced concrete: new design perspectives
TL;DR: In this article, the main concepts behind the structural rules for Fibre Reinforced Concrete structural design are briefly explained, and a New fib Model Code that aims to update the previous CEB-FIP Model Code 90, published in 1993, is presented.