In the construction process, cement is the major raw
material to be used to make the foundation strong. But, to ensure the quality
of cement, it needs to be tested at initial level. Basically, the testing
process is makes sure whether cement is fit to be used as building material or
not. Be it consistency, soundness, compressive strength or tensile strength,
cement has to undergo various testing processes in analytical lab. At present,
there are multiple aspects which need to be consecutively checked to offer a
detailed report of cement. Hence, it is advisable for manufacturers to turn
towards cement testing lab and
discuss about the number of tests applicable for checking properties of cement.
The professional lab personnel who are equipped with
advanced equipments and cutting-edge technology focus on overall composition of
cement. For instance, slurry density is one of the common tests which
laboratory professions perform. As a part of this test, mud balance is determined
along with the density because imbalance in the mud can lead to improper
reading. In addition to this, there are few tests which mark the utility of
cement practically. Here are some of the important stages of tests followed in cement testing lab:
Compressive strength
test: In this test, non-destructive method is preferred to assess
compressive strength of cement. In order to attain the best outcome, proper
apparatus is used in the laboratory. This machine which is called Ultra Cement
Analyzer plays a crucial role in assessing waiting-on cement time
determination. In simple words, this test is carried out to check if
compressive strength standards of cement are met in accordance to international
standards. There are number of cubic specimens which are considered for
analyzing compressive strength while observing elapse period during the
process.
Chemical Analysis: As
a part of this test, chemicals required to be present in the composition of
cement according to international standards are checked. In the chemical
analysis test, general chemical composition is examined through various
analytical stages, wherein, it is observed whether the cement being supplied meets
the international standards or not.
Thickening time: Application
of temperature, pressure and shearing to the slurry are major constituents of
this test of cement. The cement testing
lab performs this process till the time, “Bourdon Consistency Units” or Bc
are developed. In fact, this test uses 70 and 100 Bc units to check the
thickening level of cement. The procedure is intended at letting the suppliers
or manufacturers know whether the cement is safe to be used without obstruction
or not. In certain cases, there are risks of slurry getting stuck in pipe or
any other strong surface. Therefore, the mechanical properties and overall
thickness are mentioned in the analytical testing report offered to the clients
by the lab personnel.
Tensile strength
test: This test identifies defects in cement readily as compared to other
analytical tests carried out in cement
testing lab. Most of all, it is the most convenient test to determine the quality
of cement. The material being tested for tensile strength offers proper and
precise information. Even if the material to be tested is small, this test
keeps a check on errors and offers detailed analysis to the lab personnel.
Apart from the above information, it can be stated that
soundness of cement is also tested by the analytical laboratory. It further
implicates that the ability of hardened cement paste to retain its volume after
setting is evaluated through test of soundness. It can be concluded that
manufacturers should invest on cement
testing lab because the quality of material used for making foundation of
building cannot be compromised with.
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