Compressive Strength and Mechanism of Geopolymers from Flue Gas Desulferization Gypsum and Fly Ash

doi:10.3969/j.issn.0253-374x.2012.04.013

Home > Archive>Volume 40, Issue 4, 2012 >0573-0577. DOI:10.3969/j.issn.0253-374x.2012.04.013

Compressive Strength and Mechanism of Geopolymers from Flue Gas Desulferization Gypsum and Fly Ash
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                        10.3969/j.issn.0253-374x.2012.04.013
                    
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经钠水玻璃激发固体废弃物脱硫石膏和粉煤灰，成功研制了脱硫石膏粉煤灰地聚合物，研究了该地聚合物的抗压强度，并采用X射线衍射分析（XRD）和扫描电镜（SEM）等测试方法研究了其反应机理.研究表明：经800 ℃焙烧1 h后的脱硫石膏结构松弛、缺陷多、活性大，以10%掺量取代粉煤灰，经钠水玻璃激发形成的地聚合物，在75 ℃养护8 h或在23 ℃养护至28 d，抗压强度均可达37.0 MPa .此反应体系中，碱激发与硫酸盐激发作用共存，地聚合反应与水化反应同时进行，生成了地聚合物凝胶、类沸石以及钙矾石等反应产物.脱硫石膏粉煤灰地聚合物的成功研制，为实现多种工业废弃物的共处置利用，尤其是含硅铝相的工业废弃物和含硫酸钙的工业废弃物的共处置打下了理论基础.

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GUO Xiaolu, SHI Huisheng. Compressive Strength and Mechanism of Geopolymers from Flue Gas Desulferization Gypsum and Fly Ash[J].同济大学学报(自然科学版),2012,40(4):0573~0577

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Received:January 12,2011
Revised:January 06,2012
Adopted:July 06,2011
Online: April 27,2012
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