Heat Conduction and Strength Characteristics of Phosphogypsum-Based Foamed Building Gypsum

Abstract

Abstract: In order to further improve the comprehensive utilization rate of phosphogypsum, this article used a single factor experiment to study the effect of the dilution ratio of the composite foaming agent solution with a mass ratio of AOS, animal protein and K12 at 1:1:1 on the porosity and pore structure of phosphogypsum-based foamed building gypsum. And the relationship between porosity and strength, thermal conductivity was studied. The research results show that when the apparent density is between 600 kg/m³ and 800 kg/m³, the thermal performance of phosphogypsum-based foamed building gypsum is better than that of the other four groups of foam insulation materials. When the apparent density is greater than 900 kg/m³, the compressive strength is much higher than that of the other gypsum-based foam materials. The relationship between thermal conductivity and porosity is consistent with the Maxwell-Euchen1 model, while the relationship between compressive strength and porosity is more consistent with the Hasselmann equation. This study provides data support for the production of phosphogypsum-based foamed building gypsum.

Key words: phosphogypsum, foaming agent, mercury porosimetry, thermal conductivity, pore structure, strength

CLC Number:

TU55

XUE Kaixi, SI Pengchao, WANG Tianyuan, CAI Mengying, CHU Yixin, HU Yanxiang. Heat Conduction and Strength Characteristics of Phosphogypsum-Based Foamed Building Gypsum[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(12): 4416-4426.

References

[1] GENCEL O, DEL COZ DIAZ J J, SUTCU M, et al. A novel lightweight gypsum composite with diatomite and polypropylene fibers[J]. Construction and Building Materials, 2016, 113: 732-740.
[2] 陈明胜, 刘鹏, 孔德文, 等. 外掺料对磷石膏基胶凝材料力学及导热性能的影响[J]. 无机盐工业, 2022, 54(9): 113-118.
CHEN M S, LIU P, KONG D W, et al. Effect of additives on mechanical and thermal conductivity of phosphogypsum-based cementitious materials[J]. Inorganic Chemicals Industry, 2022, 54(9): 113-118 (in Chinese).
[3] 田甜. 磷石膏泡沫混凝土的制备及性能研究[D]. 绵阳: 西南科技大学, 2016.
TIAN T. Study on preparation and properties of phosphogypsum foam concrete[D]. Mianyang: Southwest University of Science and Technology, 2016 (in Chinese).
[4] 黄振霖, 黄勇, 李少杰, 等. 借助fluent模拟磷石膏空腔模盒辐射换热[J]. 建设科技, 2019(7): 82-87.
HUANG Z L, HUANG Y, LI S J, et al. Using fluent to simulate the radiation heat transferin wide bottom phosphogypsum enclosure[J]. Construction Science and Technology, 2019(7): 82-87 (in Chinese).
[5] CAPASSO I, IUCOLANO F. Production of lightweight gypsum using a vegetal protein as foaming agent[J]. Materials and Structures, 2020, 53(2): 1-13.
[6] CUI Y, WANG Q A, XUE J F. Novel foam insulation material produced by calcined phosphogypsum and H₂O₂[J]. Journal of Materials in Civil Engineering, 2020, 32(12): 04020379.
[7] 陈士博. 泡沫混凝土孔结构测试与图像分析法应用研究[D]. 泰安: 山东农业大学, 2022.
CHEN S B. Research on pore structure tests and image analysis method application for foamed concrete[D]. Taian: Shandong Agricultural University, 2022 (in Chinese).
[8] SHE W, DU Y, MIAO C W, et al. Application of organic-and nanoparticle-modified foams in foamed concrete: reinforcement and stabilization mechanisms[J]. Cement and Concrete Research, 2018, 106: 12-22.
[9] YANG K H, LEE K H. Tests on high-performance aerated concrete with a lower density[J]. Construction and Building Materials, 2015, 74: 109-117.
[10] SHE W, CHEN Y Q, ZHANG Y S, et al. Characterization and simulation of microstructure and thermal properties of foamed concrete[J]. Construction and Building Materials, 2013, 47: 1278-1291.
[11] PAN Z H, LI H Z, LIU W Q. Preparation and characterization of super low density foamed concrete from Portland cement and admixtures[J]. Construction and Building Materials, 2014, 72: 256-261.
[12] PAN P H D, HIROMI F, TIONGHUAN W. Preparation of high performance foamed concrete from cement, sand and mineral admixtures[J]. Journal of Wuhan University of Technology-Mater Sci Ed, 2007, 22(2): 295-298.
[13] NOVAIS R M, BURUBERRI L H, ASCENSÃO G, et al. Porous biomass fly ash-based geopolymers with tailored thermal conductivity[J]. Journal of Cleaner Production, 2016, 119: 99-107.
[14] YANG K H, LEE K H, SONG J K, et al. Properties and sustainability of alkali-activated slag foamed concrete[J]. Journal of Cleaner Production, 2014, 68: 226-233.
[15] ZHANG Z H, PROVIS J L, REID A, et al. Mechanical, thermal insulation, thermal resistance and acoustic absorption properties of geopolymer foam concrete[J]. Cement and Concrete Composites, 2015, 62: 97-105.
[16] SKUJANS J, VULANS A, ILJINS U, et al. Measurements of heat transfer of multi-layered wall construction with foam gypsum[J]. Applied Thermal Engineering, 2007, 27(7): 1219-1224.
[17] ÇOLAK A. Density and strength characteristics of foamed gypsum[J]. Cement and Concrete Composites, 2000, 22(3): 193-200.
[18] UMPONPANARAT P, WANSOM S. Thermal conductivity and strength of foamed gypsum formulated using aluminum sulfate and sodium bicarbonate as gas-producing additives[J]. Materials and Structures, 2016, 49(4): 1115-1126.
[19] LEACH A G. The thermal conductivity of foams. I. Models for heat conduction[J]. Journal of Physics D: Applied Physics, 1993, 26(5): 733-739.
[20] BRAIEK A, KARKRI M, ADILI A, et al. Estimation of the thermophysical properties of date palm fibers/gypsum composite for use as insulating materials in building[J]. Energy and Buildings, 2017, 140: 268-279.
[21] HASHIN Z, SHTRIKMAN S. A variational approach to the theory of the effective magnetic permeability of multiphase materials[J]. Journal of Applied Physics, 1962, 33(10): 3125-3131.
[22] LANDAUER R. The electrical resistance of binary metallic mixtures[J]. Journal of Applied Physics, 1952, 23(7): 779-784.
[23] KAMSEU E, NGOULOURE Z N M, ALI B N, et al. Cumulative pore volume, pore size distribution and phases percolation in porous inorganic polymer composites: relation microstructure and effective thermal conductivity[J]. Energy and Buildings, 2015, 88: 45-56.
[24] LI X Y, ZHAO X L, GUO X Y, et al. New theoretical equation for effective thermal conductivity of two-phase composite materials[J]. Materials Science and Technology, 2012, 28(5): 620-626.
[25] WANG J F, CARSON J K, NORTH M F, et al. A new approach to modelling the effective thermal conductivity of heterogeneous materials[J]. International Journal of Heat and Mass Transfer, 2006, 49(17/18): 3075-3083.
[26] GONG L L, WANG Y H, CHENG X D, et al. A novel effective medium theory for modelling the thermal conductivity of porous materials[J]. International Journal of Heat and Mass Transfer, 2014, 68: 295-298.
[27] BAI C Y, NI T, WANG Q L, et al. Porosity, mechanical and insulating properties of geopolymer foams using vegetable oil as the stabilizing agent[J]. Journal of the European Ceramic Society, 2018, 38(2): 799-805.
[28] KEARSLEY E P, WAINWRIGHT P J. The effect of porosity on the strength of foamed concrete[J]. Cement and Concrete Research, 2002, 32(2): 233-239.
[29] KUMAR R, BHATTACHARJEE B. Porosity, pore size distribution and in situ strength of concrete[J]. Cement and Concrete Research, 2003, 33(1): 155-164.
[30] RUBIO-AVALOS J C, MANZANO-RAMÍREZ A, YAÑEZ-LIMÓN J M, et al. Development and characterization of an inorganic foam obtained by using sodium bicarbonate as a gas generator[J]. Construction and Building Materials, 2005, 19(7): 543-549.
[31] WANG Q, WANG D Q, CHEN H H. The role of fly ash microsphere in the microstructure and macroscopic properties of high-strength concrete[J]. Cement and Concrete Composites, 2017, 83: 125-137.