Abstract
This article presents an overview of the bibliographic picture of the design parameter’s influence on the mix proportion of self-compacting concrete with recycled aggregate. Design parameters like water-cement ratio, water to paste ratio, and percentage of superplasticizers are considered in this review. Standardization and recent research on the usage of recycled aggregates in self-compacting concrete (SCC) exploit its significance in the construction sector. The usage of recycled aggregate not only resolves the negative impacts on the environment but also prevents the usage of natural resources. Furthermore, it is necessary to understand the recycled aggregate property’s role in a mixed design and SCC properties. Design parameters are not only influenced by a mix design but also play a key role in SCC’s fresh properties. Hence, in this overview, properties of SCC ingredients, calculation of design parameters in mix design, the effect of design parameters on fresh concrete properties, and the evolution of fresh concrete properties are studied.
Highlights
In recent decades, the construction industry has experienced exponential growth worldwide and throughout the territory of the European Union (EU)
This study provides very useful information on design parameters, the influence of design parameters on mix design and fresh concrete properties, and comparison with available standards, which are helpful for practical use in concrete production
For family IA mix, an increase in water to the cement (W/C) ratio shows a decrease in the percentage of cement content in terms of unit weight; For the family IA mix, an increase in the W/C ratio causes an increase in the supplementary cementitious materials (SCM) content of the mixes; For the family IB mix, an increase in the W/C ratio is inconsistent with cement and SCM content; For a family I mix, the filler content varies concerning the W/C ratio but the sequence shows that a greater amount of filler material results in a higher water content of mixes; For the family, I mix, increase in the percentage of aggregate in mixes results in an increase in water required to achieve the same workability of the mix Ouldkhaoua et al, 2020
Summary
The construction industry has experienced exponential growth worldwide and throughout the territory of the European Union (EU) This growth has caused a very important increase in the generation (among others) of so-called construction and demolition waste (C&DW). According to data from the European Statistical Office, Eurostat, each EU citizen produces an average of 2000 kg of waste per year, without counting waste from mining (including the latter, the figure would exceed 5000 kg/person/year) [1]. Of this set of waste, more than a third corresponds to the construction sector. It is necessary to promote the recovery of waste generated by these activities, reducing the extraction of natural aggregates and the efficient means of waste management [2,3]
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