Influence of Rice Bran Powder as an Inhibitor on Corrosion Rate and Compressive Strength of Steel Mortar

Abstract

This study investigates the influence of rice bran powder on the rate of corrosion and compressive strength of steel mortar. Mortar samples were provided with different weights of steel fillings of 5, 10, and 15 gm. as a sand substituent. The samples were conducted to compressive strength test and corrosion rate by weight loss method. The immersing time of mortar samples and the power of Hydrogen (pH) affected the corrosion rate and compressive strength. The first group of mortar samples was immersed in water for 7, 14, and 28 days, while the second group was immersed for 90, 150, and 210 days. The first group was dried and conducted the compressive strength test, and the second group conducted to corrosion rate test. The results showed that the best weight used to minimize the rate of corrosion and enhance the mortar samples’ compressive strength was 5 gm of steel filings. The findings show that the corrosion rate and compressive strength of mortar samples increase as they spend more time in the water. In addition, the best compressive strength and corrosion rate values of steel fillings mortar samples were at 28 and 90 days, respectively. Cement mortar compressive strength values increase with increased immersion time in the water.