Mechanical properties and microscale changes of geopolymer concrete and Portland cement concrete containing micro-encapsulated phase change materials

被引：160

作者：

Pilehvar, Shima ^{[1
,2
]}

Cao, Vinh Duy ^{[1
,3
]}

Szczotok, Anna M. ^{[1
,4
]}

Valentini, Luca ^{[5
]}

Salvioni, Davide ^{[6
]}

Magistri, Matteo ^{[6
]}

Pamies, Ramon ^{[2
]}

Kjoniksen, Anna-Lena ^{[1
]}

机构：

[1] Ostfold Univ Coll, Fac Engn, POB 700, N-1757 Halden, Norway

[2] Tech Univ Cartagena, Dept Mat Engn & Mfg, Murcia, Spain

[3] Norwegian Univ Life Sci, Dept Math Sci & Technol, N-1432 As, Norway

[4] Univ Castilla La Mancha, Dept Chem Engn, Ciudad Real 13004, Spain

[5] Univ Padua, Dept Geosci, I-35131 Padua, Italy

[6] Mapei SpA, R&D Cent Lab, Milan, Italy

来源：

CEMENT AND CONCRETE RESEARCH | 2017年 / 100卷

关键词：

Geopolymer concrete; Portland cement concrete; Micro-encapsulated phase change materials; Compressive strength; Microstructure; THERMAL-ENERGY STORAGE; FLY-ASH; COMPRESSIVE STRENGTH; PCM; WORKABILITY; TEMPERATURE; ALGORITHM; MORTAR;

D O I：

10.1016/j.cemconres.2017.07.012

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of micro-encapsulated phase change materials (MPCM) in solid and liquid states on the mechanical properties and microstructure of geopolymer and Portland cement concretes is investigated. Geopolymer concrete (GPC) and Portland cement concrete (PCC) containing different amounts of MPCM were prepared and cured at both 20 degrees C and 40 degrees C. The results revealed that the compressive strength of both GPC and PCC decreases with the addition of MPCM. Whether the PCM is in solid (20 degrees C) or liquid (40 degrees C) state did not significantly affect the mechanical properties of GPC, while melting the PCM was found to reduce the strength of PCC. X-ray tomography imaging was utilized to examine the effect of MPCM on the porosity of the samples. SEM imaging reveals that air gaps are formed between the microcapsules and the surrounding concrete matrix.

引用

页码：341 / 349

页数：9

共 35 条

[1] The influence of microencapsulated phase change material (PCM) characteristics on the microstructure and strength of cementitious composites: Experiments and finite element simulations [J].

Aguayo, Matthew ;

Das, Sumanta ;

Maroli, Amit ;

Kabay, Nihat ;

Mertens, James C. E. ;

Rajan, Subramaniam D. ;

Sant, Gaurav ;

Chawla, Nikhilesh ;

Neithalath, Narayanan .

CEMENT & CONCRETE COMPOSITES, 2016, 73 :29-41

[2] Influence of curing conditions on the mechanical and physical properties of chemically-activated phosphorous slag cement [J].

Allahverdi, Ali ;

Pilehvar, Shima ;

Mahinroosta, Mostafa .

POWDER TECHNOLOGY, 2016, 288 :132-139

[3] Investigation of early compressive strength of fly ash-based geopolymer concrete [J].

Assi, Lateef N. ;

Deaver, Edward ;

ElBatanouny, Mohamed K. ;

Ziehld, Paul .

CONSTRUCTION AND BUILDING MATERIALS, 2016, 112 :807-815

[4] Effects of different curing regimes on the compressive strength properties of self compacting concrete incorporating fly ash and silica fume [J].

Bingol, A. Ferhat ;

Tohumcu, Ilhan .

MATERIALS & DESIGN, 2013, 51 :12-18

[5] Synthesis and characterization of microcapsules containing Rubitherm®RT27 obtained by spray drying [J].

Borreguero, A. M. ;

Valverde, J. L. ;

Rodriguez, J. F. ;

Barber, A. H. ;

Cubillo, J. J. ;

Carmona, M. .

CHEMICAL ENGINEERING JOURNAL, 2011, 166 (01) :384-390

[6] Polymeric-SiO2-PCMs for improving the thermal properties of gypsum applied in energy efficient buildings [J].

Borreguero, Ana M. ;

Serrano, Angel ;

Garrido, Ignacio ;

Rodriguez, Juan F. ;

Carmona, Manuel .

ENERGY CONVERSION AND MANAGEMENT, 2014, 87 :138-144

[7] Study on functional and mechanical properties of cement mortar with graphite-modified microencapsulated phase-change materials [J].

Cui, Hongzhi ;

Liao, Wenyu ;

Mi, Xuming ;

Lo, Tommy Y. ;

Chen, Dazhu .

ENERGY AND BUILDINGS, 2015, 105 :273-284

[8] Effect of temperature on mortars with incorporation of phase change materials [J].

Cunha, Sandra ;

Aguiar, Jose ;

Pacheco-Torgal, Fernando .

CONSTRUCTION AND BUILDING MATERIALS, 2015, 98 :89-101

[9] The effects of ground granulated blast-furnace slag blending with fly ash and activator content on the workability and strength properties of geopolymer concrete cured at ambient temperature [J].

Deb, Partha Sarathi ;

Nath, Pradip ;

Sarker, Prabir Kumar .

MATERIALS & DESIGN, 2014, 62 :32-39

[10] Thermal, mechanical and microstructural analysis of concrete containing microencapsulated phase change materials [J].

Dehdezi, Pejman Keikhaei ;

Hall, Matthew R. ;

Dawson, Andrew R. ;

Casey, Sean P. .

INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING, 2013, 14 (05) :449-462

← 1 2 3 4 →