Physico-Chemical Properties of Sewage Sludge Ash and Its Influence on the Chemical Shrinkage of Cement Pastes

Adamczyk, Marcin; Zdeb, Tomasz; Tracz, Tomasz

doi:10.3390/materproc2023013026

Cited by 1 publication

(1 citation statement)

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“…Unfortunately, scientific research has mainly focused on methods of assessing the effects of individual components on physico-mechanical properties [3,11,12,15,16,17,29,30,49] and few papers address the form of standard compliance criteria for their selectivity [5,6,43,47]. Nowadays, the aspect of concrete durability, including its resistance to weather and chemical conditions, is widely discussed in the literature [30,46,48], which justifies the requirements formulated in the standard with regard to ensuring the durability of implemented concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Prioritization of the Requirements Formulated in the European Standard EN 206 in Assessment of Concrete Quality - Multicriteria Analysis Using the AHP Method

Skrzypczak,

Leśniak,

Jasiński

et al. 2024

Civil and Environmental Engineering Reports

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The technological process of ready-mixed concrete production, which is designed to ensure the quality of concrete and the durability of the constructed buildings in accordance with the European Standard EN 206, consists of several stages. In this standard, to ensure the stability of both the concrete production process itself and its individual stages, appropriate requirements have been formulated. Some of these requirements pertain to the on line stage of the production process, and some to the off-line stage. Some of these requirements, if not properly controlled, can disrupt the stability of the production process and also negatively impact the quality and durability of concrete structures. The article analyzes the significance of these standard requirements. For this purpose, the AHP method was used, and the Pareto principle was applied to interpret the results. The AHP analysis showed that three out of seven requirements have the most significant impact on the quality of concrete and concrete structures. These are: the constituents of concrete, the limitations for concrete composition, and the delivery of fresh concrete. The applied Pareto principle confirmed their dominant role. These three criteria account for almost 80% of the importance in ensuring the quality of concrete.

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