การพัฒนาเถ้าลูกสนทะเลเพื่อใช้ทดแทนปูนซีเมนต์

The objective of this research was to study the chemical composition of the sheoaks ash to be used as a pozzolan material in cement. The Compressive strength of the mortar is compared to sheoaks ash as a pozzolan material. Study the most appropriate cured time for mortar and compare the mortar density. This research used 125 cubic centimeter cement blocks. Use the sheoaks ash to replace cement was 0, 10, 10, 20 and 30 percent, cured in water for 7, 14, 21 and 28 days. Use ASTM C109 compressive strength, test each sample 4 times. It was found that the mortar used sheoaks ash replacing cement at 10 percent and curing time at 14 days had the compressive strength of 11.72 MPa. Increasing the amount of sheoaks ash and the curing period were the factors affecting the average compressive strength.