A bifunctional hierarchical porous kaolinite geopolymer with good performance in thermal and sound insulation

Published on Aug 10, 2020in Construction and Building Materials4.419
· DOI :10.1016/J.CONBUILDMAT.2020.118888
Huan Gao4
Estimated H-index: 4
(China University of Geosciences),
Hao Liu15
Estimated H-index: 15
(China University of Geosciences)
+ 5 AuthorsGuocheng Lv19
Estimated H-index: 19
(China University of Geosciences)
Abstract Thermal and sound insulation materials are crucial for reducing the energy consumption and noise pollution of building, but these two types of materials are generally developed independently. Here, a new type of bifunctional hierarchical porous geopolymer which can effectively reduce heat transfer and noise sound is proposed and it is synthesized with inexpensive kaolinite as main raw material through an energy-saving method. The optimal porous geopolymer products show high porosity (93.80%) and extremely low density (0.086 g·cm−3) but relatively high compressive strength (0.27 MPa). More importantly, they have low thermal conductivity (0.040 W·m−1·K−1) but high sound absorption coefficient (0.539 at 5000 Hz; 0.809 at 500 Hz with gap of 50 mm) and sound reduction index (38.6 dB at 2000 Hz). Therefore, this hierarchical porous geopolymer can be potentially used as a new type of bifunctional building material to reduce the energy consumption and noise pollution of building at the same time.
📖 Papers frequently viewed together
1 Author (Zhan Pe)
1 Citations
3 Citations
18 Citations
#1Nakshatra B. Singh (Sharda University)H-Index: 17
#2Bernhard Middendorf (University of Kassel)H-Index: 11
Last. B. Middendorf (University of Kassel)H-Index: 1
view all 2 authors...
Abstract Portland cement manufacture emits 5–7% CO2, which is responsible for global warming. Geopolymers minimize CO2 emission and may be a partial alternative to Portland cement in the building industry. The geopolymer technology gives solution to the utilization of industrial byproducts (waste) containing aluminosilicate phases with little negative impact on environment. Geopolymer cements are mainly produced by using secondary raw materials such as fly ash, metakaolin, calcined clays, zeolit...
73 CitationsSource
#1S.E. Abo SawanH-Index: 3
#2Mahmoud F. ZawrahH-Index: 27
Last. Ayman A. Abdel-Shafi (Ain Shams University)H-Index: 20
view all 4 authors...
Abstract Recently, the production of clean binding materials without energy consumption and CO2 emission has paid a great attention. In-situ formation of geopolymer foams through addition of silica-fume waste is the main goal of the present study. Moreover, an attempt to study the effect sintering temperature on the prepared geopolymer foams was also conducted. Through geopolymer formation, the silicon impurity in silica fume reacted with the alkali activator and produced hydrogen gas which entr...
9 CitationsSource
#1B. Mandili (University of Hassan II Casablanca)H-Index: 2
#2Mohamed Taqi (University of Hassan II Casablanca)H-Index: 4
Last. M. ErrouaitiH-Index: 1
view all 4 authors...
Abstract In the aim of the valorisation of waste paper, an experimental study of a new biocomposite (AWPL) dedicated to building based on Aggregates of Waste Paper and Lime is performed. The waste paper used in this work is transformed to Aggregates of Waste Paper (AWP), the physical, thermal and morphological properties were carried out. Five combinations of (AWP – Lime) have been prepared and the weight ratios of lime used are 20, 30, 40, 50, and 60 wt% correspond. Experimental investigations ...
10 CitationsSource
#1Bharat Bhushan Jindal (Shri Mata Vaishno Devi University)H-Index: 4
#1Bharat Bhushan Jindal (Shri Mata Vaishno Devi University)H-Index: 3
Last. Bharat Bhushan Jindal (Shri Mata Vaishno Devi University)H-Index: 9
view all 1 authors...
Abstract The climatic changes associated with global warming due to greenhouse gases emission from cement production attracted researchers towards geopolymer based cementitious materials. Nowadays researchers are in a continuous process to improve the mechanical properties of geopolymer mortar and concrete at ambient temperature curing condition so as to broaden its scope of utilization in building construction. The review paper summarizes the effect of various mineral additives on mechanical, d...
39 CitationsSource
#1K.A.M. El-Naggar (Cairo University)H-Index: 1
#2Sh.K. AminH-Index: 5
Last. Magdi F. Abadir (Cairo University)H-Index: 12
view all 4 authors...
Abstract Insulating geopolymer samples were prepared from cheap sources, namely, the powder residue from the production of clay bricks (clay bricks waste), slaked lime waste from acetylene production and waste aluminum trimmings from workshops. 0.5% caustic soda was used, together with slaked lime as alkaline activator. De-aluminated kaolin, a waste from the alum industry, was also added as binding agent to substitute part of the clay bricks waste. Hydrogen produced from reaction between aluminu...
8 CitationsSource
#1Peng Ren (SCUT: South China University of Technology)H-Index: 1
#2Chi Feng (Katholieke Universiteit Leuven)H-Index: 7
Last. Hans Janssen (Katholieke Universiteit Leuven)H-Index: 71
view all 3 authors...
Abstract Moisture diffusivity is an important material property for performing the hygrothermal analysis of buildings and the built environment. Its experimental determination is still a challenge, albeit various destructive and non-destructive experimental methods are available. This paper compares the X-ray method, the ruler method, the multi-step method and the Kiesl-Kunzel method to non-destructively determine the moisture diffusivity of calcium silicate, ceramic brick and lime mortar. Resul...
4 CitationsSource
#1Huan Gao (China University of Geosciences)H-Index: 4
#2Hao Liu (China University of Geosciences)H-Index: 15
Last. Danlan Huang (China University of Geosciences)H-Index: 2
view all 9 authors...
Abstract Inorganic thermal insulation materials are incombustible, cheap, and perdurable, and can thus effectively avoid such shortcomings of organic materials. Nevertheless, the physical properties, such as thermal conductivity and apparent density, are usually not as good as the organic thermal insulation materials. In present work, we designed and synthesized a new kind of inorganic thermal insulation material with admirable and intriguing triple-hierarchical porous structures by combining th...
8 CitationsSource
#1Hanxiao Cui (University of Cambridge)H-Index: 2
#2Mauro Overend (University of Cambridge)H-Index: 20
Abstract Switchable thermal insulation, in the form of an opaque panel that alternates between thermally conductive and insulated states, can be an effective means of regulating the thermal environment by selectively transferring heat between the indoor and outdoor environments. Pioneering work has been undertaken by researchers to develop switchable insulation technologies intended for applications in the built environment, automotive, and aerospace, where conventional space heating and cooling...
25 CitationsSource
#2Abdulmajeed Almaneea (Majmaah University)H-Index: 1
Last. Rabah Boukhanouf (University of Nottingham)H-Index: 12
view all 3 authors...
Abstract The work presented in this paper investigates design, computer modelling and testing of a sub-wet bulb temperature evaporative cooling system for space air conditioning in buildings. The target application of evaporative cooling technology is particularly for geographical regions with hot and dry climate. A laboratory prototype made of integrated finned heat pipes and a water filled hollow porous ceramic cuboids was been built and tested. The design exploits the high thermal conductivit...
8 CitationsSource
#1Basim Abu-Jdayil (United Arab Emirates University)H-Index: 24
#2Abdel-Hamid I. Mourad (United Arab Emirates University)H-Index: 21
Last. Suhaib Hameedi (ZU: Zayed University)H-Index: 2
view all 5 authors...
Abstract Energy saving has become a strategic goal in the whole world, that will lead to protect the environment and conserve natural resources. The energy consumption in buildings for heating and cooling is considered as one of the major sources of energy consumption in a lot of countries. Therefore, there is an ongoing search for finding the proper alternatives to preserve energy and minimize energy losses. Subsequently, heat insulators, part of building materials, are steadily getting their i...
95 CitationsSource
Cited By8
#1Darunee Wattanasiriwech (MFU: Mae Fah Luang University)H-Index: 9
#2Krissanapat Yomthong (MFU: Mae Fah Luang University)
Last. Suthee Wattanasiriwech (MFU: Mae Fah Luang University)H-Index: 8
view all 3 authors...
Abstract null null Fly ash-based geopolymer foam mortar (GFM) was used as an adsorbent material to methylene blue (MB) and also the dye removal material using the photocatalytic mechanism. The GFM, containing 50 wt% river sand aggregate, was prepared to have approximately 46% open porosity, pore size distribution between 0.01-3.5 mm, and water permeability of 0.2 cm/s. The variation of adsorption efficiency and adsorption capacity with the contact time of the GFM was first evaluated using variou...
#1Bartolomeo Coppola (Polytechnic University of Turin)H-Index: 11
#2Caroline Tardivat (Saint-Gobain)H-Index: 8
Last. Paola Palmero (Polytechnic University of Turin)H-Index: 23
view all 6 authors...
Abstract Alkali-activated pastes prepared starting from refractory wastes were successfully 3D-printed via Direct Ink Writing. In particular, as raw powders, two different aluminosilicates were used: chamotte (CH, mainly composed of corundum, mullite and andalusite) and alumina-zirconia-silica (AZS, mainly baddeleyite, corundum and amorphous silica). First, pastes rheological parameters were optimized in terms of liquid-to-solid ratio and polyethylene glycol content. Then, both dense prismatic s...
2 CitationsSource
Abstract null null Geopolymer is a new environment-friendly cementitious material, and the development of geopolymer can reduce the carbon dioxide emission caused by the development of cement industry. Geopolymer materials not only have excellent mechanical properties, but also have a series of excellent properties such as fire resistance and corrosion resistance. Most industrial solid waste and waste incineration bottom ash are piled up at will, which not only occupies land resources, but also ...
#1Priyadharshini Perumal (University of Oulu)H-Index: 4
#2Ali Hasnain (University of Oulu)
Last. Mirja Illikainen (University of Oulu)H-Index: 24
view all 5 authors...
Abstract Porous ceramics were generated by direct foaming the alkali-activated unprocessed kaolin (impure kaolin, iK) with the addition of hydrogen peroxide (H2O2) and calcining at a low temperature of 400 ​°C. Hydrogen peroxide, a blowing agent, decomposes producing oxygen gas bubbles forming the porous structure in the fresh alkali-activated iK paste. In the present study, three different molarity of alkali activator (5, 10, or 15 ​M NaOH) were employed. The dosage of blowing agent (H2O2) was ...
#1Matteo SambucciH-Index: 5
#2Abbas SibaiH-Index: 4
Last. Marco ValenteH-Index: 19
view all 3 authors...
In the last ten years, the Portland cement industry has received wide criticism due to its related high embodied energy and carbon dioxide footprint. Recently, numerous “clean” strategies and solutions were developed. Among these, geopolymer technology is gaining growing interest as a functional way to design more eco-friendly construction materials and for waste management issues suffered by various industries. Previous research has highlighted the attractive engineering properties of geopolyme...
1 CitationsSource
#1Bo Ren (WUT: Wuhan University of Technology)H-Index: 2
#2Yunliang Zhao (WUT: Wuhan University of Technology)H-Index: 20
Last. Shaoxian Song (WUT: Wuhan University of Technology)H-Index: 46
view all 6 authors...
Solid wastes are generated from human activities which could cause damage to the ecological environment and human beings. In recent years, there has been extensive research on solid wastes utilized as precursors, aggregates, fibers, etc. to prepare the geopolymers, which has invariably been a research hotspot. This review classifies the solid wastes utilized for geopolymers into three main categories: industrial waste, agricultural waste, and municipal waste. Accordingly, we systematically disse...
9 CitationsSource
#1Mengya LiH-Index: 1
#2Junjie JiangH-Index: 3
Last. Wentao ZhaiH-Index: 2
view all 4 authors...
Abstract This work provides a novel approach to manufacture hierarchical porous parts via an in-situ foaming fused deposition modeling (FDM) method. The cell nucleation, growth, and stabilization occurred as the CO2-saturated polyetherimide (PEI) filament was heated, and the layer-by-layer deposition of porous strands was controlled by a planned path. The microporous structure with cell size of 2–30 μ m and cell density of 1010−11 cells/cm3 was generated inside and on the surface of the porous P...
1 CitationsSource
#1Huan Gao (China University of Geosciences)H-Index: 4
#2Libing Liao (China University of Geosciences)H-Index: 33
Last. Chuxuan Wang (China University of Geosciences)H-Index: 1
view all 9 authors...
Abstract Porous geopolymers are energy saving, environment-friendly and simple in preparation. However, the thermal conductivity (TC) of present porous geopolymers as well as other inorganic thermal insulation materials can be hardly below 0.050 W m-1 K-1 in the markets. In order to further decrease the TC of porous geopolymers, it is vital to understand the heat transfer mechanism of this type of materials. In this work, we made a comparison among the main heat transfer models for porous two-co...
5 CitationsSource