Evaluation of the effect of concrete compositional changes and the use of ethyl-alcohol and biodegradable-oil-based release agents on the final surface appearance of self-compacting concrete precast elements

Silva, W.R.L. da; Lucena, D.S.; Štemberk, Petr; Prudêncio, Luiz Roberto

doi:10.1016/j.conbuildmat.2013.10.102

Cited by 12 publications

(2 citation statements)

References 12 publications

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“…These tests along with the observation of abrasion were performed by [17]. Results showed that the needle-shape particles of yellow pigment causes more effective net of capillaries and thus the absorbability is higher [18,19]. There was also better resistance to abrasion in comparison to other pigments.…”

Section: Special Concrete and Composites 2014mentioning

confidence: 99%

Coloured Concrete with Focus on the Properties of Pigments

Koťátková

Reiterman

2014

AMR

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In this paper the possibilities of colouring concrete and the use of pigments are presented. There are two groups of pigments with respect to its manufacture (organic and inorganic) and three different forms available on market: powder, granulates and slurry. Next to the influences of other concrete components the effects of fine pigment particles on the properties of fresh and hardened concrete are introduced. Because of the higher need of water the workability of each mixture is affected. With the increasing specific surface area of pigment the flow of fresh concrete decreases. On the other hand this characteristic feature causes slightly higher density of concrete matrix which results in better durability. Optimal dosages differs depending on the form of pigment, for powders it is about 5% of the weight of cement content. Higher amounts don ́t bring about higher tinting strength and in the case of more than 10 % its mechanical properties can be negatively affected. An example of colour evaluation as well as utilization of recycled materials as colouring agents are also mentioned.

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Section: Special Concrete and Composites 2014mentioning

confidence: 99%

Coloured Concrete with Focus on the Properties of Pigments

Koťátková

Reiterman

2014

AMR

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“…Hence, LDPE can be used for such purposes [53][54][55][56], and it is possible to use LDPE-filled geomembrane / geocomposite porometry for in situ investigation of dynamic pore size variations (from their formation to collapse). The most interesting is the analysis of biodegradable LDPE-containing composites in real soils and aquatic environments (due to the fact that biodegradable composites for ecological building are very popular nowadays [57][58][59][60][61][62]). Another investigation area of such environment-friendly composites is the stability measurements during melting under environmental heating [63][64][65][66][67][68][69][70], including visualization of filler particle flows (in PIV or other similar modes) in melting filled composites in climatrons / weatherometers under the modeled global heating conditions [71][72][73].…”

Section: Introductionmentioning

confidence: 99%

Towards Multi-Angle Multispectral Optical 3D Porometry and Lens-Less Porometry of Civil Engineering Composites and Geocomposites Including Biodegradable Ones

Grigorieva¹,

Градов²,

Gradova³

et al. 2022

Advances in Transdisciplinary Engineering

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In this work we demonstrate the images of multi-angle porometry of civil engineering composites with the static pores. We also demonstrate an example of the application of multi-angle scanning methods where each pore visualization angle corresponds to the certain time moment. The light source can be either incoherent or coherent, which determines the data interpretation principles and data processing algorithms. The light detector can be either optical microscopic (with lenses) or lens-less, that is, either a microscope with an objective or a lens-less one, especially a holographic lens-less microscope. The latter is by definition compatible with multi-angle microporometry. The data on reconstruction of the surface texture of a complex pore using an incoherent light source and the Sobel-Feldman operator (Stanford Artificial Intelligence Laboratory (SAIL)) is presented.

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