基于正交试验的泡沫脱硫石膏基复合材料性能研究

doi:10.19964/j.issn.1006-4990.2022-0363

Abstract

Abstract:

In order to understand the order of the effect of admixtures on the properties of foamed desulfurized gypsum materials，the desulfurized building gypsum was mixed with composite portland cement，granulated blast furnace slag powder and microsilica powder based on the method of orthogonal test.The foamed desulfurized gypsum-based composite cementitious material was prepared by the method of physical foaming，the physical and mechanical properties of the hardened body of the foamed desulfurized gypsum-based composite material were studied，and the influence factors were judged by combining the range and variance analysis..The results showed that the micro-silica powder was an important factor affecting the strength，water absorption and dry density，while the granulated blast furnace slag powder mainly affected the softening coefficient.Combined with the actual application requirements of the project，the optimal test scheme of foamed desulfurization gypsum-based composites was A₂B₁C₂ through range and variance analysis.The content of composite Portland cement was 12%，the content of slag powder was 10%，and the content of microsilica powder was 10%.

Key words: desulfurized gypsum, cement, slag powder, microsilica powder, orthogonal test

CLC Number:

TQ050.43

MURZATAEV Asan, XIAO Shihao, FU Rusong, AN Hongfang, KONG Dewen, WANG Lingling. Study on performance of foam desulfurization gypsum-based composites based on orthogonal tests[J]. Inorganic Chemicals Industry, 2023, 55(4): 92-96.

Figures/Tables 11

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References 16

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编号	各指标的试验结果（28 d）
编号	抗压强度/MPa	抗折强度/MPa	吸水率	软化系数	干密度/ （kg∙m^-3）
1	13.54	2.68	0.20	0.49	1 008
2	13.45	4.20	0.17	0.51	972
3	12.21	3.59	0.17	0.46	958
4	15.40	4.60	0.17	0.49	994
5	13.56	3.22	0.19	0.48	1 012
6	13.47	4.78	0.17	0.43	1 033
7	13.29	3.59	0.17	0.52	977
8	15.02	4.25	0.18	0.46	1 025
9	13.69	4.22	0.18	0.47	982

项目	吸水率			软化系数
k₁	0.18	0.18	0.18	0.49	0.5	0.46
k₂	0.18	0.18	0.17	0.47	0.48	0.49
k₃	0.18	0.17	0.18	0.48	0.46	0.49
R	0.004 4	0.007 4	0.011 6	0.02	0.05	0.03

项目		干密度/（kg∙m^-3）
k₁	979.5	993.25	1 022.14
k₂	1 013.24	1 003.39	983.03
k₃	994.91	991.01	982.49
R	33.74	12.38	39.65

方差来源	离差平方和	自由度	均方	F值	显著性
A	2.05	2	1.03	1.93	*
B	1.70	2	0.85	1.60
C	2.36	2	1.18	2.21	**
误差	1.06	2

方差来源	离差平方和	自由度	均方	F值	显著性
A	0.000 67	2	0.000 34	1.00
B	0.003 14	2	0.001 57	4.68	**
C	0.001 66	2	0.000 83	2.48	*
误差	0.000 67	2

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on performance of foam desulfurization gypsum-based composites based on orthogonal tests

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水平	因素
水平	A水泥掺量/%	B矿渣粉掺量/%	C微硅粉掺量/%
1	10	10	8
2	12	12	10
3	14	14	12

方差来源	离差平方和	自由度	均方	F值	显著性
A	1 711.57	2	855.79	1.02	*
B	261.12	2	130.56	0.16
C	3 102.41	2	1 551.21	1.86	**
误差	122.04	2

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