Continuous monitoring of concrete mechanical properties since an early age to support construction phasing

The assessment of concrete mechanical properties during construction of concrete structures is of paramount importance for many intrinsic operations. However many of the available non-destructive methods for mechanical properties have limitations for use in construction sites. One of such methodologies is EMM-ARM, which is a variant of classic resonant frequency methods. This paper aims to demonstrate the efforts towards in-situ applicability of EMMARM, as to provide real-time information about concrete mechanical properties such as E-modulus and compressive strength. To achieve the aforementioned objective, a set of adaptations to the method have been successfully implemented and tested: (i) the reduction of the beam span; (ii) the use of a different mould material and (iii) a new support system for the beams. Based on these adaptations, a reusable mould was designed to enable easier systematic use of EMMARM. A pilot test was successfully performed under in-situ conditions during a bridge construction.

Tableau encyclopedique et methodique des trois règnes de la nature: Botanique.

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Tableau encyclopedique et methodique des trois règnes de la nature: Botanique.

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Tableau encyclopedique et methodique des trois règnes de la nature: Botanique.

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Methodus plantas horti botanici et agri Marburgensis :a staminum situ describendi /auctore Conrado Moench.

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Methodus plantas horti botanici et agri Marburgensis :a staminum situ describendi /auctore Conrado Moench.

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Icones plantarum rariorum /editae Nicolao Josepho Jacquin.

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Icones plantarum rariorum /editae Nicolao Josepho Jacquin.

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Icones plantarum rariorum /editae Nicolao Josepho Jacquin.

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Plantarum rariorum horti caesarei Schoenbrunnensis descriptiones et icones /Opera et sumptibus Nicolai Josephi Jacquin.

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Plantarum rariorum horti caesarei Schoenbrunnensis descriptiones et icones /Opera et sumptibus Nicolai Josephi Jacquin.

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Plantarum rariorum horti caesarei Schoenbrunnensis descriptiones et icones /Opera et sumptibus Nicolai Josephi Jacquin.

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Plantarum rariorum horti caesarei Schoenbrunnensis descriptiones et icones /Opera et sumptibus Nicolai Josephi Jacquin.

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