Effect of mineral admixtures on some properties of sand-lime bricks

Pytel, Z.; Malolepszy, J.

doi:10.1016/s0713-2743(00)80049-5

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Secondly, it is possible to recycle numerous waste materials by adding them into the silicate brick manufacturing process. Some researchers assess the influence of waste material addition into the silicate brick, analyzing, amongst other things, the microstructure and strength parameters [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Moisture Influence on Compressive Strength of Calcium Silicate Masonry Units–Experimental Assessment and Normative Calculations

2020

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This paper primarily assesses the scale of adverse changes to the compressive strength of different types of silicates due to the influence of moisture. The study covers three groups of silicate units of different strength classes—15, 20 and 25—obtained from three different manufacturers. It was demonstrated that in all studied groups, moisture significantly decreased the compressive strength by about 30–40%. In addition, microstructural studies were conducted to analyze the relationship between the specific porosity structure of each group of silicate bricks and their compressive strength. On the basis of SEM (Scanning Electron Microscopy) and EDS (Electron Dispersive Spectroscopy) analysis, the elemental composition of individual silicates was determined and the contact zone between the aggregate and the binder was determined, which largely influenced the obtained compressive strength of each silicates. Next, the study referred to the utility of the normative procedure used to determine the strength class of samples with different geometries and at different moisture concentrations. The results of the calculations showed the high accuracy of the normative-based assessment of strength class, regardless of the manufacturer and the moisture values during examination.

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Section: Introductionmentioning

confidence: 99%

Moisture Influence on Compressive Strength of Calcium Silicate Masonry Units–Experimental Assessment and Normative Calculations

2020

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“…After During autoclaving, chemical reactions take place in the microstructure of the autoclaved aerated concrete, giving the resulting products their strength. After curing, the products are immediately ready for dispatch [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Investigation of effective replacement of sand by waste perlite in AAC production

Černý,

Mészárosová,

Drochytka

et al. 2023

ce papers

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Aerated concrete is a lightweight building material with excellent thermal and technical properties, relative to strength, excellent workability, and is economically advantageous. The basic composition of raw materials includes lime, cement, silica sand, and aluminum powder. Currently, the usability of secondary raw materials is being investigated in many construction sectors. The usability of secondary raw materials becomes a necessity from an ecological and economic point of view. The elimination of CO2 emissions is currently a major global issue. Secondary raw materials used in the construction industry are most often waste materials produced during the combustion of solid substances. These substances are often accumulated in landfills, which have a negative impact on the surrounding environment. It is necessary to constantly look for new ways of using these waste materials not only in the construction industry. The use of these raw materials reduces the price of the final product. It is advantageous if it also brings about a positive change in the properties of aerated concrete. The article deals with the possibility of replacing part or all of the sand content in the recipe of autoclaved aerated concrete with waste perlite. As part of the experimental verification, the influence of waste perlite filler on physical‐mechanical properties (e.g., bulk density, strength) and changes in microstructure is investigated. Primary sand is replaced by perlite in the amount of 10%, 30%, 50%, and 100% by volume in the experiments. The formation of porous structure, its characteristics, and mineralogical composition, in particular the formation of tobermorite, is also evaluated. The study has brought an interesting finding. The results show that the maximum beneficial amount of waste perlite is 30%. Up to this limit, waste perlite has a positive effect on the even distribution of pores in the matrix, with a zero‐phase content of more than 65%. The compressive strength of the samples with waste perlite increases by up to 22% of the values of the compressive strength of the reference sample.

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Aspects for a cleaner production approach for coal and biomass use as a decentralized energy source in southern Brazil

Gomes¹,

Vilela²,

Zen³

et al. 2013

Journal of Cleaner Production

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Effect of mineral admixtures on some properties of sand-lime bricks

Cited by 3 publications

References 2 publications

Moisture Influence on Compressive Strength of Calcium Silicate Masonry Units–Experimental Assessment and Normative Calculations

Moisture Influence on Compressive Strength of Calcium Silicate Masonry Units–Experimental Assessment and Normative Calculations

Investigation of effective replacement of sand by waste perlite in AAC production

Aspects for a cleaner production approach for coal and biomass use as a decentralized energy source in southern Brazil

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