Control of hydration rate of polymer modified cements by the addition of organically modified montmorillonites

Piqué, Teresa María; Vázquez, Analı́a

doi:10.1016/j.cemconcomp.2012.12.006

Cited by 24 publications

(17 citation statements)

References 20 publications

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“…These properties, especially compressive strength, are improved by adding traces of borax into the compound. Pique et al [6] used 4 wt% PVA in their study of the changes in the hydration process of a modified cement paste. Like Knapen et al [4], they detected retardation in the hydration process of a cement paste modified by PVA.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pva Modification on Properties of Cement Composites

Topič¹,

Prošek²,

Indrová³

et al. 2015

Acta Polytech

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Polymers are used for modification of the cement-based composites and others building materials since the thirties of 20th century. Based on the conclusions of recent studies, it is assumed that even water soluble polymers could be used as an admixture for such modification. Currently, there exist and are exploited several possibilities for polymer modification of mortars, wood-based products or bituminous asphalts. Various options differ in the way of modification, which can be basically applied to the entire volume or just a surface, but also in the form of the polymer used – either in the form of solution or fibers. The aim of our study was to investigate the influence of volume modification by the water soluble polymers, such as polyvinyl alcohol (PVA), on the properties of cement paste and find an optimum additive. It turned out that the addition of PVA solution into fresh cement paste results in an increase of porosity and therefore a stiffness and compressive strength reduction. On the other hand, the bending strength of PVA-rich specimens was significantly higher and their water absorption decreased, which may consequently result in enhanced frost resistance.

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Section: Introductionmentioning

confidence: 99%

Effect of Pva Modification on Properties of Cement Composites

Topič¹,

Prošek²,

Indrová³

et al. 2015

Acta Polytech

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“…The main effect on concrete of a copolymer based on acrylic acid -acrylamide incorporating colloidal silica nanoparticles was the considerable reduction of the porosity of the capillary system (8). On the other side, the addition to concrete of a polymer nanocomposite based on poly (vinyl alcohol) (PVA) and montmorillonite (MMT) was able to increase the properties of cement composites with the exception of the compression strength (9).…”

Section: Concretementioning

confidence: 99%

Polymer Nanocomposites in Building, Construction

Feldman

2014

Journal of Macromolecular Science, Part A

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Nanotechnology is an enabling technology allowing to do new things in almost every conceivable area. Initial efforts to exploit nanoscience/nanotechnology development in the construction industry focused mainly on understanding phenomena and improving performance of existing materials. Recently, polymer nanocomposites started to be introduced in other areas like the construction industry.Polymer nanocomposite field attracts considerable attention these days due to a variety of potential practical applications. They have offered a great opportunity in sustainable construction/green building application due to their efficiency and environmental protection. Their use in the construction industry is still less known outside the research area. This paper is a short review of recent studies done in this area, taking into account that some nano based materials are ready to be used by the construction industry. This review covers some studies done in the polymer nanocomposite applications in construction basic materials such as concrete, asphalt, thermal and sound insulation, adhesives, coatings, plastics and in energy.

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“…The lateral size of these layers may vary from 30 nm to several microns or larger, depending on the particular layered silicate. Within this group of phyllosilicates, montmorillonite [14], [15], [22] is the most common but hectorite [23] and saponite [20] have also been studied. Two particular characteristics of layered silicates play an important role when application in PMCs is considered: the first one is the ability of the silicates particles to disperse into individual layers; the second one is the ability to fine-tune their surface chemistry through ion exchange reactions with organic and inorganic cations.…”

Section: Nanoclaymentioning

confidence: 99%

Polymer nanocomposites for structural applications: Recent trends and new perspectives

Silvestre

Brito

2016

Mechanics of Advanced Materials and Structures

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Due to their outstanding mechanical, thermal and durability properties, polymer matrix nanocomposites (PMCs) are nowadays a prominent area of research. The opportunity of applying PMCs in structural reinforcement and rehabilitation of damaged infrastructures, as well as working as a new structural material, justifies the increasing number of recent studies. In this review article, the effect of additing different reinforcements at nano-scale, such as carbon nanotubes, nanoclay, graphene or nanosilica to polymer matrices is discussed and the improvement in mechanical properties of PMCs is evaluated. Some concluding remarks and new perspectives on the use of PMCs in structures are given.

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Control of hydration rate of polymer modified cements by the addition of organically modified montmorillonites

Cited by 24 publications

References 20 publications

Effect of Pva Modification on Properties of Cement Composites

Effect of Pva Modification on Properties of Cement Composites

Polymer Nanocomposites in Building, Construction

Polymer nanocomposites for structural applications: Recent trends and new perspectives

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