Advanced Design for Experimental Optimisation of Physico-Mechanical Characteristics of Sustainable Local Hemp Concrete
Laurentiu Adam,
Loredana Judele,
Iuliana Motrescu,
Ion Rusu,
Daniel Lepadatu () and
Roxana Dana Bucur
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Laurentiu Adam: Faculty of Civil Engineering and Building Services, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania
Loredana Judele: Faculty of Civil Engineering and Building Services, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania
Iuliana Motrescu: Department of Exact Sciences & Research Institute for Agriculture and Environment, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 700490 Iasi, Romania
Ion Rusu: Transport Infrastructure Engineering Department, Faculty of Urban Planning and Architecture, Technical University of Moldova, 2028 Chisinau, Moldova
Daniel Lepadatu: Faculty of Civil Engineering and Building Services, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania
Roxana Dana Bucur: Livestock Building Department, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 700490 Iasi, Romania
Sustainability, 2023, vol. 15, issue 11, 1-16
Abstract:
The meaning of technological progress is to produce economic development and to increase the level of personal comfort. Sustainability can only be achieved if, at the microsystem level as well as at the macrosystem level, the secondary effects of the activities undertaken by people on the environment are in a state of neutrality compared to the impact they can produce on natural conditions. This neutrality can be intrinsic or can be achieved through coercive and compensatory measures. If we take into account the production of carbon dioxide that accompanies a product from the stages of conceptualisation, design, procurement of materials, execution, operation, maintenance, decommissioning and recycling the waste produced at the end of use, then nothing can be sustainable in pure form. Nevertheless, there are products whose production, both as a raw material and as a technological process, can be neutral in terms of carbon emissions. Moreover, they can even become carbon negative over time. This is also the case with eco-sustainable hemp concrete, whose capacity to absorb carbon dioxide starts from the growth phase of the plant from which the raw material is obtained and continues throughout the existence of the constructed buildings. Not only does it absorb carbon dioxide, but it also stores it for a period of at least 50 years as long as the construction is guaranteed, being at the same time completely recyclable. However, in order to obtain an optimal mixture from the point of view of raw material consumption, represented by industrial hemp wood chips and the binder based on lime and cement, multiple experiments are necessary. The study presented in this work is based on the use of an advanced method of experimental planning (design of experiments method), which makes possible the correlation between the values obtained experimentally and the algorithm that generated the matrix arrangement of the quantities of materials used in the recipes. This approach helps to create the necessary framework for parametric optimisation with a small number of trials. Thus, it is possible to obtain the mathematical law valid within the minimum and maximum limits of the studied domain that defines the characteristics of the material and allows the achievement of optimisation. The material is thus designed to satisfy the maximum thermal insulation requirements that it can achieve depending on a certain minimum admissible compressive strength.
Keywords: local hemp concrete; design of experiments method; advanced optimisation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:11:p:8484-:d:1153922
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