Desulfurization gypsum concrete
A technology for desulfurized gypsum and desulfurized building gypsum, applied in the field of desulfurized gypsum concrete, can solve the problems of waste of supporting materials, slow setting time, low flexural strength, etc. The effect of improving the cracking ability
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Embodiment 1
[0070] 1. Masterbatch formula
[0071] Table 1
[0072]
[0073]
[0074] Mix the masterbatch according to the above formula, and stir evenly. Test its performance, the test data is as follows:
[0075] Table 2
[0076] performance parameter
Test Results
14 days flexural strength / Mpa
GB / T17671-1999
5.7
14 days compressive strength / Mpa
GB / T17671-1999
26.1
compressive strength softening factor
0.86
[0077] 2. Preparation of desulfurized gypsum concrete
[0078] Mix the masterbatch, medium sand, melon seeds with a fineness modulus greater than 2.5, and water at a volume ratio of 1:1.5:1.5:0.4, and stir evenly.
[0079] The performance test of the prepared gypsum sprayed concrete is carried out, and the test data are as follows:
[0080] table 3
[0081] performance parameter
Embodiment 2
[0083] 1. Masterbatch formula
[0084] Table 4
[0085] Desulfurization building gypsum
600 parts by weight
300 parts by weight
cement
100 parts by weight
[0086] alum
0.2 parts by weight
1.5 parts by weight
0.5 parts by weight
VAC / VeoVa copolymerized redispersible latex powder
1 part by weight
1 part by weight
[0087] Mix the masterbatch according to the above formula, and stir evenly. Test its performance, the test data is as follows:
[0088] table 5
[0089] performance parameter
Test Results
14 days flexural strength / Mpa
GB / T17671-1999
6.4
14 days compressive strength / Mpa
GB / T17671-1999
28.3
compressive strength softening factor
0.89
[0090] 2. Preparation of desulfurized gypsum concrete
[0091] Mix the masterbatch, medium sand...
Embodiment 3
[0096] 1. Masterbatch formula
[0097] Table 7
[0098] Desulfurization building gypsum
[0099] Mix the masterbatch according to the above formula, and stir evenly. Test its performance, the test data is as follows:
[0100] Table 8
[0101] performance parameter
[0102] 2. Preparation of desulfurized gypsum concrete
[0103] Mix the masterbatch, medium sand, melon seeds with a fineness modulus greater than 2.5, and water at a volume ratio of 1:1.5:1.5:0.36, and stir evenly.
[0104] The performance test of the prepared gypsum sprayed concrete is carried out, and the test data are as follows:
[0105] Table 9
[0106] performance parameter
[0107] 28-day standard curing axial compressive strength standard value / Mpa
PUM
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Abstract
Description
Claims
Application Information
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