Black Rice Husk Ash

We only accept orders of more than or equal to 1 Metric Ton in weight. 


Black rice husk ash (BRHA) waste product is inexpensive and can be obtained from rice mills. Reuse of waste
product is ideal to reduce pollution because disposal is decreased or eliminated. The commercial value of BRHA has
increased, and it is suitable for use in road construction. In this study, BRHA waste was ground using a grinding ball mill
for 120 min to form a fine powder. BRHA was then sieved to less than 75 μm. At the laboratory, BRHA was mixed with
bitumen to replace 2%, 4%, and 6% of the total weight, whereas 0% represented the control sample. The penetration,
softening point, dynamic shear rheometer (DSR) and rolling thin film oven (RTFO) were investigated in this study.
Results showed that bitumen became harder, whereas the rate of penetration decreased when the replacement amount of
BRHA increased. Softening point test of bitumen also revealed an increase. The short-term ageing test revealed that
modification of bitumen could relieve the effect of ageing. BRHA waste added to bitumen improved the performance of
bitumen. Therefore, the usage of BRHA could help improve the performance of road pavement and reduce the rutting


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