Improving the compressive strength of mortar from a binder of fly ash-calcium carbide residue

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Namarak C., Satching P., Tangchirapat W., Jaturapitakkul C.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2017

วารสาร: Construction and Building Materials (0950-0618)

Volume number: 147

หน้าแรก: 713

หน้าสุดท้าย: 719

จำนวนหน้า: 7

นอก: 0950-0618

eISSN: 1879-0526

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018239999&doi=10.1016%2fj.conbuildmat.2017.04.167&partnerID=40&md5=a0863988bcfcf43f22118a01bc99e5b8

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

The aim of this research is to improve the compressive strength of mortar made from fly ash (FA) and calcium carbide residue (CR) as a binder. FA is a by-product from a thermal power plant while CR is a by-product from an acetylene gas industry. They were used together to form a new binder material for concrete. Due to low strength at the early age, several processes were introduced to increase the compressive strength of the new binder. Finenesses of binder, curing temperatures, and cement contents were the studied parameters in this study. Mortars cast for 24 h were oven-cured at temperatures of 30, 45, 60 and 75 ฐC for 24 h, and then cured in water at room temperature until the testing age. The results showed that the fineness of CR-FA binder is the most important factor to increase the compressive strength of CR-FA mortar. At 90 days, the compressive strength could increase from 15.6 MPa to 26.0 MPa as a result of an increased fineness of the binder. In addition, a high curing temperature enhanced the compressive strength of mortar at an early age but was less effective at a later age. Moreover, substituting some of the GCR-GFA binder with Portland cement can accelerate and increase the mortar strength at various rates. The mortar SC0T30 (no cement) has a compressive strength of 26.0 MPa at 90 days and could be increased to 30.3 and 31.2 MPa with 5 and 10% of cement in the binder, respectively. ฉ 2017 Elsevier Ltd

คำสำคัญ

Fly ash