Alkali-Activated Slag cement: Alternative Adhesives for CFRP Sheets Bonded to Concrete at Elevated Temperatures

被引：0

作者：

Zhu, Jing ^{[1
,2
]}

Zheng, Wenzhong ^{[3
]}

Xie, Lili ^{[2
]}

Ren, Ning ^{[1
]}

Zhang, Yuxuan ^{[1
]}

Zhang, Yongxin ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Coll Civil Engn & Architecture, Harbin 150080, Peoples R China

[2] China Earthquake Adm, Key Lab Earthquake Engn & Engn Vibrat, Inst Engn Mech, Harbin 150080, Peoples R China

[3] Harbin Inst Technol, Key Lab Struct Dynam Behav & Control, Minist Educ, Harbin 150090, Peoples R China

来源：

JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS | 2020年 / 23卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Alkali-activated slag; CFRP; high temperature; mechanical properties; microstructure; HYDRATION PRODUCTS; MECHANICAL-PROPERTIES; STRENGTH; BEHAVIOR; IMMOBILIZATION; MATRICES; POLYMER;

D O I：

10.14447/jnmes.v23i3.a03

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The properties and microstructures of alkali-activated slag cement (AASC) exposed to 20-1200 degrees C were probed in this paper. The aim is to develop an eco-friendly fireproof high-strength adhesive with an optimum ratio and evaluate its usability for CFRP sheets bonded to concrete. The blast furnace slag and fly ash were employed as source materials (activated by potassium silicate, NaOH and Portland cement). The effects of slag content, activator nature and heating temperature on the compressive or bond properties were analyzed. The microstructures of the AASC exposed to different high temperatures were studied by two different techniques, including SEM and XRD analyses. The effects of temperature on the mechanical properties of AASC were first rising then descending, and the basic reason for the degradation of macromechanical properties is the deterioration of AASC microstructure. It is proved that AASC has comparable reinforcing effects as those of organic epoxy matrix.

引用

页码：167 / 176

页数：10

共 24 条

[1] Sodium silicate-based, alkali-activated slag mortars Part I. Strength, hydration and microstructure
Brough, AR
Atkinson, A
[J]. CEMENT AND CONCRETE RESEARCH, 2002, 32 (06) : 865 - 879
[2] Immobilization of Cr6+, Cd2+, Zn2+ and Pb2+ in alkali-activated slag binders
Deja, J
[J]. CEMENT AND CONCRETE RESEARCH, 2002, 32 (12) : 1971 - 1979
[3] Hydration products and reactivity of blast-furnace slag activated by various alkalis
Escalante-García, JI
Fuentes, AF
Gorokhovsky, A
Fraire-Luna, PE
Mendoza-Suarez, G
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2003, 86 (12) : 2148 - 2153
[4] Gantchenko V, 2017, REV COMPOST MATER AV, V27, P319, DOI 10.3166/rcma.27.319-334
[5] Residual compressive behavior of alkali-activated concrete exposed to elevated temperatures
Guerrieri, Maurice
Sanjayan, Jay
Collins, Frank
[J]. FIRE AND MATERIALS, 2009, 33 (01) : 51 - 62
[6] Art-of-review on CFRP Wrapping to Strengthen Compressive and Flexural Behavior of Concrete
Komma, Hemanth Kumar Reddy
Nerella, Ruben
Madduru, Sri Rama Chand
[J]. REVUE DES COMPOSITES ET DES MATERIAUX AVANCES-JOURNAL OF COMPOSITE AND ADVANCED MATERIALS, 2019, 29 (03): : 159 - 163
[7] Empirical study on twisting force using Taguchi doe technique during drilling of hybrid FRP laminate
Mathivanan, N. Rajesh
Babu, Manjunatha N. S.
Kumar, K. Vijaya
[J]. REVUE DES COMPOSITES ET DES MATERIAUX AVANCES-JOURNAL OF COMPOSITE AND ADVANCED MATERIALS, 2018, 28 (02): : 277 - 288
[8] Alkali-activated binders: A review - Part 1. Historical background, terminology, reaction mechanisms and hydration products
Pacheco-Torgal, Fernando
Castro-Gomes, Joao
Jalali, Said
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2008, 22 (07) : 1305 - 1314
[9] Alkali-activated cementitious materials: Alternative matrices for the immobilisation of hazardous wastes - Part II. Stabilisation of chromium and lead
Palomo, A
Palacios, M
[J]. CEMENT AND CONCRETE RESEARCH, 2003, 33 (02) : 289 - 295
[10] Alkali-activated cements - Opportunities and challenges
Roy, D
[J]. CEMENT AND CONCRETE RESEARCH, 1999, 29 (02) : 249 - 254

← 1 2 3 →