Alkali-activated slag mortars

Fernández-Jiménez, Ana; Palomo, José; Puertas, Francisca

doi:10.1016/s0008-8846(99)00154-4

Cited by 513 publications

(109 citation statements)

References 5 publications

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“…If NaOH and Na2CO3 are used, they show similar shrinkage as the PC. Among other drawbacks there are their propensity to form efflorescences and, in some cases, to too fast setting [2,3].…”

Section: Introductionmentioning

confidence: 99%

Impact of graphite admixture on electrical properties of alkali-activated slag mortars

Kusák¹,

Lunak²,

Rovnanı́k³

2017

MATEC Web Conf.

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One of the objectives of the applied research's striving consists in providing the users with new slag-mortar-based materials. Basic research, in its turn, aims at examining the newly created materials from the viewpoint of all possible testing methods. Slag mortar specimens were subjected to electrical analysis carried out by means of an ZNC vector analyser and an SPEAG-made DAK-12 coaxial probe within the frequency range from 100 MHz to 3GHz and, furthermore, a dedicated automatically measuring device within the frequency range from 40 Hz to 1 MHz. The frequency spectra of interest were measured on various copolymer specimens differing from each other by the content of the carbon powder. Higher graphite powder content increases the electrical conductivity of cement/slag-based building materials, which thus become easier to measure by means of electromagnetic measuring methods. Carbon admixture may also improve the material's antistatic properties.

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“…If NaOH and Na2CO3 are used, they show similar shrinkage as the PC. Among other drawbacks there are their propensity to form efflorescences and, in some cases, to too fast setting [2,3].…”

Section: Introductionmentioning

confidence: 99%

Impact of graphite admixture on electrical properties of alkali-activated slag mortars

Kusák¹,

Lunak²,

Rovnanı́k³

2017

MATEC Web Conf.

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“…Due to chemical differences in the starting materials (vitreous blast furnace slag and silicoaluminate fly ash) the reaction products and the microstructure of these cements vary considerably. These features determine the properties of the resulting cements and concretes, which have been shown to exhibit suitable strength development and good durability [10][11][12]. Those properties, along with drying shrinkage, have likewise been proven to depend heavily on the nature of the activating solution [13,14].…”

Section: Cmss-2017mentioning

confidence: 99%

“…In general terms, the AAMs are characterized by a good mechanical strength and durability against different aggressive agents [12,[15][16][17][18][19][20]. However, to date little is known on the physical behaviour of AAMs pastes as well as the intrinsic variability observed in rheological tests.…”

Section: Cmss-2017mentioning

confidence: 99%

Rheology of Cementitious Materials: Alkali-Activated Materials or Geopolymers

et al. 2018

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Abstract.A clear alternative to reach the goal of sustainable development in the Construction Sector is the development of alternative building materials to Ordinary Portland Cement (OPC) in a more energetically as well as environmentally eco-efficient way. Alkaline cements (Alkali-Activated Materials, AAMs) and geopolymers meet these requirements; and they are based on the alkali activation of aluminosilicates (mainly waste and industrial by-products, such as blast furnace slag, fly ash and ceramic waste) in highly alkaline solutions. AAMs cements and concretes are notable for being very durable and mechanically resistant. However, to date their rheological behaviour is not well controlled and there is little understanding of it, with very disparate experimental data. Despite this, their rheological behaviour is not fully understood and little is known on the disparate data obtained in AAM pastes. Moreover, the common additives used in the preparation of OPC concretes and the rheology modifiers/controllers are also unstable in the AAMs systems. Understanding and controlling the rheology of the AAMs systems will ultimately determine whether they can be implemented in the market, and will open up greater competitive possibilities in a crisis-affected sector. A systematic study of the factors that affect the rheological properties of AAMs (pastes, mortars and concretes) is therefore necessary in order to ultimately develop more resistant and durable materials.

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“…Until now, geopolymers have mostly relied on low calcium fly ash or ground granulated blast furnace slag. Most of the previous studies on geopolymer concrete and mortars are about the engineering properties of low calcium fly ash and slag based-geopolymer concrete [5][6][7][8]. On the other hand, only limited information is available the use of natural zeolite in production of geopolymer concrete or mortar [9,10].…”

Section: Introductionmentioning

confidence: 99%

Freeze-Thaw and Fire Resistance of Geopolymer Mortar Based on Natural and Waste Pozzolans

Degirmenci¹

2017

Ceramics - Silikaty

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Alkali-activated slag mortars

Cited by 513 publications

References 5 publications

Impact of graphite admixture on electrical properties of alkali-activated slag mortars

Impact of graphite admixture on electrical properties of alkali-activated slag mortars

Rheology of Cementitious Materials: Alkali-Activated Materials or Geopolymers

Freeze-Thaw and Fire Resistance of Geopolymer Mortar Based on Natural and Waste Pozzolans

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