The influence of salt concentrations and power of hydrogen values on polymer cement mortar compressive strength

Abstract

The objective of this study is to investigate the influence of adding recycled rubber with different weight (5, 10 and 15 gm.) on the cement mortar compressive strength. It was found from the obtained results, the best compressive strength is obtained at (10) gm. After that, the effect of two factors was studied. The first factor was different power of hydrogen values (pH) and how they affect the compressive strength test on cement mortar samples. The second factor was different salt concentrations solutions were used as curing water for the samples to immerse. The salt that used was sodium chloride (NaCl) with different weight percentage (5%, 10%). From the results, It is noticed that, the pH with (7) value gives the optimum compressive strength for cement mortar. Also, the average of compressive strength values for the samples immersed in salted water was higher at (5%) weight percent of salt than (10%). On the other hand, the longer the immersion of the samples in the salted water, the greater the compressive strength values of cement mortar.