Field investigation of the variation of concrete strength using the schmit hammer

Τίτλος

Field investigation of the variation of concrete strength using the schmit hammer

Θέμα

Strength of materials

Concrete

Concrete--Chemistry

Δημιουργός

Aristodemou, Aristos

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1989

Συνεισφέρων

Andreou, Demetris

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

en

Τύπος

text

Αναγνωριστικό

CED0044

Σύνοψη

This project deals with only one and very important property of concrete, and that is STRENGTH.
The concrete strength of a three storey building has been tested with the aid of a non-destructive method the SCHMIT HAMMER. The building's concrete strength was examined to check if it was with in the specified standards that a safe design demanded. This tests were carried out on the three basic parts of the structure i.e. Slabs, Beams and Columns. (Measurements were taken for all different points of the part tested e.g. For beams values were taken from the middle and from below.)
In the begining of the project notes are given concerning strength as related to specifications
and strength as related to the limit state design.
Then Determination of strength follows i.e. how strength was considered as safe in the past and how in nowadays.
The factors which concern strength in a concrete mix are discussed. I.e. water/cement ratio, gellspace ratio, porosity, compaction, influence of coarse aggregates in the mix, etc.
Then a detailed explanation of the Scmit hammeris given including usage, maintenance etc,
Then. the tables of the results are given togetherwith graphs that came out when calibration of the instrument took place.
Finally the conclusions are given accompanied with comments.
The final results have shown that the building under testing is above the required standards and that it sufficiently satisfies the requirements of safe design.