Humidity control materials prepared from diatomite and volcanic ash

Vu, Dinh-Hieu; Wang, Kuen‐Sheng; Bac, Bui Hoang; Nam, Bui Xuan

doi:10.1016/j.conbuildmat.2012.09.040

Cited by 96 publications

(26 citation statements)

References 19 publications

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“…The humidity self-controlling property of concrete is ascribed to incorporate mesopores with appropriate diameters and a broad pore size distribution into concrete. The zeolite with adequate mesopores is the potential candidate (Goto and Terao, 2005;Maddison et al, 2009;Maeda et al, 2011;Rao et al, 2012;Vu et al, 2013;Zhang and Yoshino, 2010). The schematic diagram of humidity self-controlling concrete is shown in Figure 39.…”

Section: Humidity Self-adjusting Concrete and Structuresmentioning

confidence: 99%

Smart concretes and structures: A review

Han

Wang

Dong

et al. 2015

Journal of Intelligent Material Systems and Structures

220

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Smart concretes and structures are intelligent systems that have properties different from normal concrete, such as selfsensing and self-healing properties, or have the ability to react upon an external stimulus, such as stress and temperature. The ''smartness'' of concrete and structures is achieved through material composition design, special processing, introduction of other functional components, or modification of the microstructure. They are designed to meet specific requirements through tailored properties for improving serviceability, safety, reliability, longevity, and durability of the infrastructures and reducing the life-cycle costs of the infrastructures. This article reviews the recent researches of various smart concretes and structures, with attentions to their principles, fabrication, and properties. Future challenges in the development and applications of smart concretes and structures are also discussed.

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Section: Humidity Self-adjusting Concrete and Structuresmentioning

confidence: 99%

Smart concretes and structures: A review

Han

Wang

Dong

et al. 2015

Journal of Intelligent Material Systems and Structures

220

View full text Add to dashboard Cite

show abstract

“…The moisture self-adjusting concrete quickly reaches the moisture content equilibrium state in the low-humidity environment. In the contrast, the moisture content of the moisture self-adjusting concrete increases with time in a saturated humidity environment [141][142][143][144] .…”

Section: Moisture Self-adjusting Concretementioning

confidence: 96%

Intelligent Concrete with Self-x Capabilities for Smart Cities

Wang¹,

Li²,

Han³

et al. 2017

J Smart Cities

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Intelligent concrete refers to the structural materials which can sense the changes of environment and make suitable responses by altering one or more working parameters in real time. The 'intelligent' properties of concrete are achieved mainly by improving the composition of raw materials or combining some functional materials with concrete matrix, thus leading to the concrete possessing bionic features. Compared to conventional concrete, a properly designed intelligent concrete can be applied to optimize the safety, longevity and function of infrastructures and reduce the life-cycle costs, resource consumption and environment pollution, which will lay a material foundation for building smart cities. In the past few decades, considerable efforts have been put towards the research of intelligent concrete and many innovative achievements have been gained in the development and application of intelligent concrete. Thirteen types of intelligent concrete emphasizing on its self-x capabilities are systematically reviewed in this paper, with attentions to their principles, composition, fabrication, properties, research progress and structural applications. In addition, some comments and prospects for the development of self-x concrete are also discussed.

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“…Generally, the diatomite [15,16] is frequently used as starting materials to fabricate HBMs because of its superior properties such as low toxicity, lightweight, abundance and high porosity [17][18][19][20][21][22]. For example, it was proposed that HBMs were prepared by high-temperature sintering diatomite with volcanic ash [23].…”

Section: Introductionmentioning

confidence: 99%

A Simple Method To Valorize Silica Sludges Into Sustainable Coatings For Indoor Humidity Buffering

Kuok

Dianbudiyanto

Liu

2021

Preprint

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In this study, the production of indoor humidity-buffering coatings (IHC-s) from recycling waste silica sludges by using a room-temperature sol-gel method which is a simple and energy-efficient route is reported. The properties of these IHC-s coatings are identified by scanning electron microscope, X-ray diffraction, X-ray fluorescence spectrometer, laser particle size analyzer, N2 adsorption-desorption isotherms and toxicity characteristic leaching procedure (TCLP). The moisture adsorption-desorption tests show that the IHC-s coatings have moisture buffering values of ca. 270-316 g m-2 and moisture contents of 24-27% in the range of 50-90% relative humidity (RH). Furthermore, the humidity buffering capacities, moisture adsorption-desorption rate and stability are significantly superior to commercially available coatings in the range of 50-75% RH. The enhancement may be due to the formation of porous structure in the coatings via the dispersed waste silica sludges and gypsum which transformed from bassanite by self-assembly process. Most importantly, the prepared IHC-s coatings show surpassing antimicrobial efficacy (> 99.99%) and no detectable leaching heavy metals based on TCLP tests, which provides an economic and environmental-friendly route for recovering and valorizing industrial wastes.

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Humidity control materials prepared from diatomite and volcanic ash

Cited by 96 publications

References 19 publications

Smart concretes and structures: A review

Smart concretes and structures: A review

Intelligent Concrete with Self-x Capabilities for Smart Cities

A Simple Method To Valorize Silica Sludges Into Sustainable Coatings For Indoor Humidity Buffering

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