Abstract:
The aim of this research is to learn the influence of palm oil fly ash and quick lime with the certain
percentage against strength that was produced. Using of the additive or substitution of palm oil fly
ash and quick lime can be hoped to save the use of cement in the mortar mixture. Moreover it will
be useful to give waste added value of the industry that has not yet made use of optimally
especially as the building materials (close the environment). The ratio between cement and sand in
this research was 1:3. The specimen was made total 108 samples, the size of specimen is 5x5x5
cm. Palm oil fly ash and quick lime that are used with the percentage 20%, 40%, 60% and 80%
against heavy cement, while the composition of palm oil ash fly ash and the lime that is 67.5-
32.5. In the meantime as the standard mortar was made by the mixture of the level of palm oil fly
ash with quick lime 0 % and 100%.The results of the research show that the optimum value in the
percentage of 20% with strength 202.06 Kg/cm2 (the age 28 days) and 40 % with strength 197.69
kg/cm2 (the age 56 days). While the biggest porosity and absorption value was obtained in mortar
with 100% and 80 % palm oil fly ash and quick lime.
