Preparation of glass ceramic foams for thermal insulation applications from coal fly ash and waste glass

Zhu, Mengguang1; Ji, Ru2; Li, Zhongmin1; Wang, Hao1; Liu, Lili1; Zhang, Zuotai1,3

2016-06

10.1016/j.conbuildmat.2016.02.183

CONSTRUCTION AND BUILDING MATERIALS   影响因子和分区

0950-0618

1879-0526

Glass ceramic foams were prepared by direct foaming method, using coal fly ash and waste glass as the main materials, borax and calcium carbonate as fluxing agent and foaming agent, respectively. The effects of coal fly ash additions, foaming time, heating rate and sintering temperature on the bulk density, porosity, mechanical properties and thermal conductivity were systematically investigated. The optimum parameters to prepare the glass ceramic foams were obtained at 800 degrees C for 45 min with 40 wt.% coal fly ash, 60 wt.% waste glass, 30 wt.% borax and 0.5 wt.% calcium carbonate. The specimens prepared this way have a low bulk density (as low as 0.46 g/cm(3)), exhibiting considerable compressive strength (exceeding 5 MPa) and low thermal conductivity (about 0.36 (W/m K)). The energy saving effect using glass ceramic foams was evaluated by EnergyPlus software, indicating that the prepared glass ceramic foams show good energy conservation effect for building thermal insulation materials. The preparation of glass ceramic foams using solid wastes may provide a promising way to prepare thermal insulation material, considering the advantages in both economic and environmental aspects. (c) 2016 Elsevier Ltd. All rights reserved.

Coal fly ash Glass ceramic foams Thermal insulation material

SCI ; EI

英语

通讯

Fundamental Research Funds for the Central Universities[FRF-TP-15-085A1]

Construction & Building Technology ; Engineering ; Materials Science

Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary

WOS:000375166900040

ELSEVIER SCI LTD

20161102083078

Borate minerals ; Calcium carbonate ; Coal ; Coal ash ; Compressive strength ; Density (specific gravity) ; Energy conservation ; Fly ash ; Glass ceramics ; Historic preservation ; Permafrost ; Sintering ; Sodium borate ; Thermal conductivity ; Thermal insulating materials ; Thermal insulation

Heat Insulating Materials:413.2 ; Minerals:482.2 ; Solid Fuels:524 ; Energy Conservation:525.2 ; Thermodynamics:641.1 ; Chemical Products Generally:804 ; Ceramics:812.1 ; Physical Properties of Gases, Liquids and Solids:931.2

MATERIALS SCIENCE

Web of Science

1.Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China
2.Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China
3.South Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Zhu, Mengguang,Ji, Ru,Li, Zhongmin,et al. Preparation of glass ceramic foams for thermal insulation applications from coal fly ash and waste glass[J]. CONSTRUCTION AND BUILDING MATERIALS,2016,112:398-405.

Zhu, Mengguang,Ji, Ru,Li, Zhongmin,Wang, Hao,Liu, Lili,&Zhang, Zuotai.(2016).Preparation of glass ceramic foams for thermal insulation applications from coal fly ash and waste glass.CONSTRUCTION AND BUILDING MATERIALS,112,398-405.

Zhu, Mengguang,et al."Preparation of glass ceramic foams for thermal insulation applications from coal fly ash and waste glass".CONSTRUCTION AND BUILDING MATERIALS 112(2016):398-405.