Preparation and properties of sulphoaluminate cement-based foamed concrete with high performance

Tian, Liang; Huang, Fangmei; Lan, Li; Zhu, Jianhua; Jiang, Xingyu; Huang, Yongbo

doi:10.1016/j.conbuildmat.2020.120945

Cited by 45 publications

(12 citation statements)

References 29 publications

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“…Thermal conductivity (λ), which is a measure for the ease of heat travel through a material by conduction, was measured in this study using an ISOMET 2114 device that was supplied with a surface probe and following the procedures stated by Cetiner and Shea [ 21 ]. It should be noticed that the smaller the λ, the better the thermal performance and energy-saving efficiency [ 23 ].…”

Section: Resultsmentioning

confidence: 99%

Development of eco-friendly wall insulation layer utilising the wastes of the packing industry

Alsaffar,

Alquzweeni,

Al-Ameer

et al. 2023

Heliyon

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Section: Resultsmentioning

confidence: 99%

Development of eco-friendly wall insulation layer utilising the wastes of the packing industry

Alsaffar,

Alquzweeni,

Al-Ameer

et al. 2023

Heliyon

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“…After wiping the water on the surface, the flexural strength and compressive strength were tested immediately. The softening coefficient φ is calculated according to the following formula [30]:…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Mechanical Properties and Pore Structure Characteristics of Magnesium Oxychloride Cement Modified by Highland Barley Straw Ash

Cao

Huang

Wang

et al. 2021

Preprint

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Highland barley straw ash contains a large amount of silica, and the ash calcined and ground under certain conditions has a higher pozzolanic effect. In order to study the effect of HBSA added into magnesium oxychloride cement mortar (MOCM) on the mechanical properties and pore structure, the activity of highland barley straw ash was studied firstly through the macroscopic mechanical properties test. Nuclear magnetic resonance (NMR) and Brunner−Emmet−Teller (BET) were used to test the distribution of full pore and micropore for MOCM respectively. The microstructure of MOCM was characterized by scanning electron microscope (SEM). The results illustrate that the highest activity of HBSA was obtained by calcining at 600℃ for 2h and grinding for 2h. The addition of HBSA has a significant effect on the mechanical properties and pore diameter distribution of MOCM. A large amount of M-S-H gel was generated in MOCM added with 10% HBSA content, and had a consequence of decreased proportion of larger pores and the increased proportion of micropores as well as the better mechanical properties and pore structure.

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“…Li et al used CO 2 as a foaming gas to prepare magnesium-phosphate-cement-based foam concrete, with a thermal conductivity ranging from 0.10 to 0.30 W/(m·K) [ 17 ]. In addition, Li also prepared sulfoaluminate-cement-based foam concrete with a thermal conductivity ranging from 0.052 to 0.13 W/(m·K) [ 18 ]. Ma et al used CO 2 as the foaming gas to prepare magnesium-phosphate-cement-based foam concrete with a thermal conductivity range of 0.066–0.341 W/(m·K) [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Preparation and Performance of CO2 Foamed Concrete for Heat Insulation and Carbon Storage

Zhang

Wan

et al. 2023

Materials

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Environmental problems caused by large amounts of CO2 generated by coal–electricity integration bases have raised concerns. To solve these problems, this study develops a CO2 foam concrete (CFC) material with both heat insulation and carbon fixation characteristics to realize CO2 in situ storage and utilization. In this study, a Portland-cement-based CO2 foam concrete (PC-CFC) with good thermal insulation performance and carbon fixation ability is prepared using carbonation pretreatment cement and a physical foaming method. The effects of CO2 on the compressive strength, thermal insulation, and carbon fixation properties of PC-CFC are studied. The internal relationship between the compressive strength, thermal insulation, and carbon fixation performance of PC-CFC is analyzed, and the feasibility of PC-CFC as a filling material to realize the in situ mineralization and storage of CO2 in the coal–electricity integration base is discussed. The experimental results show that the compressive strength of PC-CFC is significantly improved by CO2 curing. However, CO2 in the PC-CFC pores may weaken the strength of the pore structure, and the compressive strength decreases by 3.62% for each 1% increase in PC-CFC porosity. Using CO2 as a foaming gas and the physical foaming method to prepare CFC can achieve improved thermal insulation performance. The thermal conductivity of PC-CFC is 0.0512–0.0905 W/(m·K). In addition, the compressive strength of PC-CFC increases by 19.08% when the thermal conductivity of PC-CFC increases by 1%. On the premise of meeting the thermal insulation requirements, PC-CFC can achieve improved compressive strength. The carbon sequestration rate of the PC-CFC skeleton is 6.1–8.57%, and the carbon storage capacity of PC-CFC pores is 1.36–2.60 kg/ton, which has obvious carbon sequestration potential; however, the preparation process and parameters of PC-CFC still require further improvement. The research results show that PC-CFC has great potential for engineering applications and is of great significance for realizing carbon reduction at the coal–electricity integration base.

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Preparation and properties of sulphoaluminate cement-based foamed concrete with high performance

Cited by 45 publications

References 29 publications

Development of eco-friendly wall insulation layer utilising the wastes of the packing industry

Development of eco-friendly wall insulation layer utilising the wastes of the packing industry

Mechanical Properties and Pore Structure Characteristics of Magnesium Oxychloride Cement Modified by Highland Barley Straw Ash

Study on Preparation and Performance of CO2 Foamed Concrete for Heat Insulation and Carbon Storage

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