Polymer coated pumice aggregates and their properties

Bideci, Özlem Salli; Bideci, Alper; Gültekin, Ali Haydar; Oymael, Sabit; Yıldırım, Hasan

doi:10.1016/j.compositesb.2013.10.009

Cited by 18 publications

(6 citation statements)

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“…Excluding the results for cement 3, the absolute and percentage increase in Leca density was as high as 210–290 kg/m 3 and 38–53%, respectively. These density increments, although seeming to be big, are comparable as achieved for LWAs impregnated with polymers [ 27 ]. The lowest percentage increase in particle density (by 2–14%) was revealed by Lytag aggregate, as it was initially the densest LWA.…”

Section: Discussionsupporting

confidence: 55%

“…It should be noted that the effectiveness of the tested LWAs tightening with cement paste turned out to be comparable to this achieved by impregnating LWAs with polymers. The research dedicated to pumice aggregate pre-coated with different polymers [ 27 , 32 ], characterized by water absorption similar to the tested Leca or Lytag aggregates, showed a comparable reduction in water absorption.…”

Section: Discussionmentioning

confidence: 99%

“…There are many technologies used for aggregate impregnations. In order to increase the aggregate tightness, depending on its type, it may be coated with e.g.,: cement paste [ 21 , 22 , 23 , 24 , 25 , 26 ], natural and synthetic polymers [ 21 , 24 , 27 , 28 , 29 , 30 , 31 , 32 ], calcium metasilicate [ 33 ], sodium silicate [ 22 , 24 , 30 ] or sodium carbonate solutions [ 34 , 35 ], kerosene, different oils [ 24 ], paraffin [ 18 , 31 , 36 , 37 , 38 , 39 ]. It should be stated that in some research, the priority goal of LWA immersion in paraffin or polyethylene glycol is not so much to make concrete tighter but to incorporate the phase change material into the composite in order to improve its thermal properties [ 31 , 36 , 37 ] or freeze-thaw resistance [ 39 ].…”

Section: Introductionmentioning

confidence: 99%

“…The idea of the impregnation of lightweight aggregates [ 22 , 24 ] or recycled concrete aggregates (RCA) [ 21 , 22 , 23 , 26 ] with cement paste seems to be less popular than pre-coating the aggregates with polymers [ 21 , 24 , 27 , 28 , 29 , 30 , 31 , 32 ]. There are probably some concerns regarding less effective impregnation with cement paste in concrete tightness enhancement, higher increase in density, or slightly longer procedure of preparation.…”

Section: Introductionmentioning

confidence: 99%

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The Properties of Lightweight Aggregates Pre-Coated with Cement Pastes and Their Suitability for Concrete

Domagała

Bryła

2021

Materials

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One of the biggest technological problems connected with the production of lightweight concretes made of porous aggregates is their much higher water absorption, which may cause on the one hand workability loss, and on the other hand excess water content in concrete. The aim of this research was to assess the effect of impregnation of lightweight aggregates (LWAs) with cement paste on their properties and to verify its effectiveness in concretes. Three types of lightweight aggregates differing in porosity and pore structure (sintered fly ash Lytag, expanded clay: Leca and Liapor) were selected for the tests. The following parameters were taken into consideration in the research program: LWA type and size, LWA initial moisture content, strength, and rheology of cement pastes. The tests of 22 different aggregates, plain and coated with cement paste, included density, crushing strength, and development of water absorption in time. The research program proved that porous aggregates, due to their impregnation with cement pastes, may be effectively sealed and strengthened. All tested LWAs showed a considerable decrease in water absorption by up to 71%. However, only Lytag aggregate showed a visibly enhanced crushing strength. Verification of effectiveness of aggregate sealing on the enhancement of concrete properties showed both a considerable reduction in water absorption of composites (by up to 52%) and a very high increase in their strength (by up to 107%).

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Properties of Lightweight Aggregates Pre-Coated with Cement Pastes and Their Suitability for Concrete

Domagała

Bryła

2021

Materials

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“…Marble powder was spread on the sticking aggregates during polymer coating. The coated aggregates were dried at 23 ± 2 ° C temperature for an average period of 96 h [19] .…”

Section: Polymer Coating Of Aggregatesmentioning

confidence: 99%

Analysis of shrinkage and creep behaviors in polymer-coated lightweight concretes

Bideci

Oymael

et al. 2014

Science and Engineering of Composite Materials

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The creep and shrinkage properties of polymer-coated lightweight concretes were examined. Fivehundred-dose lightweight concretes were produced by coating pumice aggregates with three different polymers (Sonomeric1: SNMC, KB Pur 214: KBP, and Polipol3455: PLP). The 3-, 7-, and 28-day compressive strength values of the obtained lightweight concrete samples were determined, and the 840-h and 12-month creep and shrinkage deformations were measured. It was found that the ductility of the SNMC-and KBP-coated concrete samples increased, while their shrinkage deformation results decreased when compared with the control samples. In contrast, the ductility of PLP concrete samples decreased and the shrinkage deformation became higher. In conclusion, the use of SNMC-and KBP-coated pumice aggregates had a positive effect on the creep and shrinkage properties of the concrete. Furthermore, it was observed that the compressive strength values of the lightweight concretes made of the coated samples were higher than those of the control sample.

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An Experimental Study on Partial Replacement of Fine Aggregate by Vermiculate and Cement by Marble Powder

Prakash¹,

Sangeetha²,

Bagwan³

2018

Lecture Notes in Civil Engineering

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Polymer coated pumice aggregates and their properties

Cited by 18 publications

References 1 publication

The Properties of Lightweight Aggregates Pre-Coated with Cement Pastes and Their Suitability for Concrete

The Properties of Lightweight Aggregates Pre-Coated with Cement Pastes and Their Suitability for Concrete

Analysis of shrinkage and creep behaviors in polymer-coated lightweight concretes

An Experimental Study on Partial Replacement of Fine Aggregate by Vermiculate and Cement by Marble Powder

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