Investigação da resistência à compressão e da resistividade elétrica de concretos com diferentes tipos de cimento
Abstract
This work studied the influence of four Brazilian types of cement on the compressive
strength and electrical resistivity in samples of concrete. Three water/binder ratios were
analyzed, which led to the preparation of twelve different samples. The results show that the
types of cement has a direct influence on both tests. In general, compared to a reference, the
cements with additions of blast furnace slag and pozzolans reduced the strength, but
increased the electrical resistivity. It was also observed that the cement with pozzolan
showed the highest gain in strength with time, although it resulted in the lowest absolute
value. The results also indicated that the electrical resistivity increases with time and
decreases with higher water/binder ratios. A good correlation was found between the
mentioned tests with R2 ranging from 0.823 to 0.999.
Keywords: compressive strength, electrical resistivity, cements, blast fumace slag, pozzolan.
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References
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