Anhydrite characteristics used as construction materials
ลักษณะแอนไฮไดรต์ใช้เป็นวัสดุก่อสร้าง

Danupon Tonnayopas, Asst. Prof., D. of Mining and Materials Eng., F. of Eng., PSU.
Krit Ploamson, Mining Engineer, Asokelime Co. Ltd., Pakchong, Nakhon Ratchasima
Corresponding e-mail : tdanupon@ratree.psu.ac.th

Grant : Faculty of Engineering, PSU.
Published : KKU Engineering J 2000, 27(3) : 47-59
Key words : anhydrite, construction materials, weathering

The anhydrock samples were collected from two deposits in Nakhon Si Thammarat and Surat Thani provinces. The experimental investigation of them was carried out in basic characteristic of aggregate, 0.38-0.39 percent porosity, 0.13-0.14 percent of water absorption and 2.87 dried specific gravity.

The aggregate properties composed 39.30-41.63 percent of wear, 0.25-0.27 uniformity factor, 4.34-4.80 MPa point load strength, 98.2-98.3 percent retained of the second durability cycle, 11.62 and 14.41 percent soundness values and 31.24-35.56 percent impact values.

Therefore, the anhydrite does not appropriate neither structural construction nor bases or subases for highways or airports but it is also available for concrete aggregate.

---

BACK