การศึกษาเถ้าถ่านหิน FGD เพื่อนำมาใช้ทำมอร์ต้าร์

A Study of Flue Gas Desulfurization (FGD) Fly Ash in Mortar

Name: ชัยพล พิทยกิตติวงศ์

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: FGD Fly Ash

; Mortar

; Compressive Strength

; Sulfuric Acid Resistance

; Sulfate

; Expansion

Abstract: The objective of this research is to study of compressive strength, sulfuric acid resistance and expansion of mortar due to magnesium sulfate solution when Portland cement type 1 is replaced by FGD fly ash 0-50 percent by weight of cementitious material.The results revealed that the replacement of FGD fly ash increased the initial and final setting times. However, adding calcium chloride (CaCl2) 1 percent by weight of cementitious material could reduce these setting times. Water to binder ratio slightly decreased when increased the percentage replacement of FGD fly ash. Compressive strength of FGD fly ash mortar with 20 percent replacement was higher than 85 percent of cement mortar (control) for all curing ages. Furthermore, mortar with 40 percent replacement gave compressive strength higher than 85 percent of cement mortar strength at 28 days. FGD fly ash mortar with calcium chloride had more compressive strength than the one without calcium chloride. FGD fly ash mortar with 10 percent replacement had more ability to resist sulfuric acid with pH 1.5 than cement mortar. Mortar with all percent replacements of FGD fly ash had more ability to resist the expansion due to 5 percent of magnesium sulfate solution than cement mortar. Increasing the percentage of replacement of FGD fly ash in mortar tended to decrease the ability of sulfuric acid resistance as well as expansion due to sulfate solution.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร (Bangkok)

Email: info.lib@mail.kmutt.ac.th

Name: รศ.ดร. ชัย จาตุรพิทักษ์กุล

Role: อาจารย์ที่ปรึกษา

Created: 2546

Issued: 2005-09-19

Modified: 2006-05-09

วิทยานิพนธ์/Thesis

ISBN: 9741832362

CallNumber: CVE1981

tha

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Civil Engineering

Grantor: King Mongkut's University of Technology Thonburi

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