Correlação de resistência à compressão de prismas e blocos de concreto
Resumo
Structural masonry is a constructive system very present in the
Brazilian civil construction and continues to growing and updated constantly with new
studies and technologies. In this work, the prism/block relationship will be
approached and compared with some of the main Brazilian and foreign literature and
standards, in addition to the comparison of the coefficients of variation of the units,
ungrouted prism, grouted prism, mortar and grout tests. The study was based on
more than 37,000 tests carried out by Brazilian construction companies and
organized into 873 sets of tests in order to obtain the prism/unit ratio and the
coefficients of variation for each type of test using graphs. The results obtained for
the coefficients of variation indicate an average of 6.66% and 4.20% for the hollow
and full prism tests respectively, and for the 95% certainty value the results were
12.58% and 9, 57%. These coefficient values show significantly lower values than the
value used by the standard, 20%. The results of the prism/block ratio were related to
foreign and Brazilian standards and obtained consistent general values, being slightly
less conservative than the Brazilian standard for the average straight line of the sets
of tests results.
Collections
Os arquivos de licença a seguir estão associados a este item: