Mechanical Performance Comparison of Geopolymer Paste,Mortar and Concrete after Exposure to High Temperature

张海燕; 祁术亮; 曹亮

doi:10.13409/j.cnki.jdpme.2015.01.003

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Mechanical Performance Comparison of Geopolymer Paste,Mortar and Concrete after Exposure to High Temperature

更新时间：2025-12-11

- Mechanical Performance Comparison of Geopolymer Paste,Mortar and Concrete after Exposure to High Temperature
- Vol. 35, Issue 1, Pages: 11-16(2015)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2015.01.003
  CLC： U528
- Published：2015
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[1]张海燕,祁术亮,曹亮.地聚物净浆、砂浆和混凝土高温后力学性能比较[J].防灾减灾工程学报,2015,35(01):11-16.

张海燕, 祁术亮, 曹亮. Mechanical Performance Comparison of Geopolymer Paste,Mortar and Concrete after Exposure to High Temperature[J]. 2015, 35(1): 11-16.
[1]张海燕,祁术亮,曹亮.地聚物净浆、砂浆和混凝土高温后力学性能比较[J].防灾减灾工程学报,2015,35(01):11-16. DOI： 10.13409/j.cnki.jdpme.2015.01.003.

张海燕, 祁术亮, 曹亮. Mechanical Performance Comparison of Geopolymer Paste,Mortar and Concrete after Exposure to High Temperature[J]. 2015, 35(1): 11-16. DOI： 10.13409/j.cnki.jdpme.2015.01.003.

摘要

以钾水玻璃为激发剂、偏高岭土和粉煤灰为主要硅铝原料制备地聚物

测试了地聚物净浆、砂浆和混凝土的常温和高温后抗折及抗压强度

并与矿渣硅酸盐水泥净浆、砂浆和混凝土的试验结果进行了比较。通过地聚物热重分析以及高温后地聚物试样的收缩变形量测

对试验结果进行了分析及解释。结果表明

配制出的地聚物净浆、砂浆和混凝土的抗压及抗折强度均随温度升高而降低

但无论是常温还是高温后

其强度都基本能达到或超过水泥净浆、砂浆和混凝土的相应强度;高温下地聚物收缩而骨料膨胀

两者变形的不一致将导致地聚物混凝土高温开裂。

Abstract

Geopolymer was prepared by using potassium silicate as activator solution

metakaolin and fly ash blend as main silicoaluminate materials.The bending and compressive strength before and after exposure to high temperature was tested on geopolymer paste

mortar and concrete specimens

and the results were compared with that of cement paste

mortar and concrete specimens.The trends of test results and phenomena were explained by thermogravity analysis and thermal contraction measurement of geopolymer.The test results show that the bending and compressive strength of geopolymer paste

mortar and concrete decrease with increase of temperatures

but either at ambient temperature or after exposure to high temperature the strength of geopolymer paste

mortar and concrete prepared in this study can almost reach or exceed that of cement paste

mortar and concrete.The incompatibility between thermal contraction of geopolymer and thermal expansion of aggregates induces cracking of geopolymer concrete at elevated temperatures.

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references

我国水泥工业二氧化碳排放现状与减排分析 [J]. 韩娟,赵晨,汪牡丹,张坚强,傅国华,熊春荣. 海南大学学报(自然科学版) . 2010(03)

用碱激发矿渣耐高温无机胶在混凝土表面粘贴碳纤维布试验研究 [J]. 郑文忠,陈伟宏,徐威,王英. 建筑结构学报 . 2009(04)

粉煤灰地聚合物混凝土的制备、特性及机理 [J]. 张云升,孙伟,沙建芳,林玮,郑克仁,刘斯凤. 建筑材料学报 . 2003(03)

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Effect of elevated temperatures on geopolymer paste, mortar and concrete [J] . Daniel L.Y. Kong,Jay G. Sanjayan. Cement and Concrete Research . 2009 (2)

Comparative performance of geopolymers made with metakaolin and fly ash after exposure to elevated temperatures [J] . Daniel L.Y. Kong,Jay G. Sanjayan,Kwesi Sagoe-Crentsil. Cement and Concrete Research . 2007 (12)

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