Glass fibre for reinforcing concrete

专利摘要:
Alkali-resistant glass fibres for use as reinforcement in cementitious products are formed from a composition comprising, in weight percentages: SiO2 55 to 75% R2O @@ 11 to 23% ZrO2 @@@6 to 22% Cr2O @@@0.1 to 1% Al2O3 0.1 to 7% Rare earth oxides + TiO2 0.5 to 16% where R2O is any one or more of Na2O, K2O or Li2O, the content of TiO2 does not exceed 10%, and the total of the components recited above amounts to at least 88% by weight of the glass, the glass having been melted under non- oxidising conditions such that all or a substantial proportion of the chromium in the glass is in the trivalent state. Cementitious products incorporating such fibres, e.g. in a proportion of 3 to 6 weight %, can be made using a Magnani-type asbestos cement machine or by a "spray-up" method.
公开号:SU1243619A3
申请号:SU813249502
申请日:1981-02-26
公开日:1986-07-07
发明作者:Мелвин Файлз Кеннет；Шоррок Питер
申请人:Пилкингтон Бразерз Лимитед；
IPC主号:

专利说明:

12
This invention relates to an alkali-resistant glass fiber composition used to reinforce concrete.
The purpose of the invention is to increase the corrosion resistance to cement.
Fiberglass is produced in a continuous manner at a drawing temperature not exceeding 1350 ° C. It is also important that the difference between the working temperature
Tuyu extracts and liquidation temperatures in Table. 1. Mixtures of rare earths
Dusa TP was (40-80) C, and in the proactive case, the stretching of continuous fiber is impossible., Prd, fibers made from compositions of isobreoxides according to the table. 1 are given in table 2. In tab. Figure 3 shows the drawing temperature of the compositions, the liquidus temperature {and the results described by the froth, after finishing and drying the cement in the test - 15 PVTs. Shivan are placed in a block of cement-figures related to an increase in the duration of the test. Samples after the service life, are displayed on the indicated for one day at a relative basis, while observing the com values of the total humidity of 100%, they are placed under water, not less than 630 below the water gap. and hold / one batch at 50 ° C, and 20 700 MN / m, respectively, for another at 80 ° C for correspondingly .1.3 months and for 2.8 days.
1Tabvcca1
six months and fourteen. days Then, the tear resistance measurements are made. It is established that the tearing resistance does not decrease below 630 + 50 MN / m after 2 months at 50 ° C and below 700 + 50 MN / m after 3 days at 80 C.
Specific examples of the compositions lead in table. 1. Mixtures of rare earths
64.1
62.3
60.2
60.2 0.2
67.05
59,175
61.64 62.4
b1 to
58,275
63.7
57.0
58.7
63.1
57,20,2
57.3
57.9
58.7
60.0
63.5
63.04
58,6
61.9
61.9
61.9
6.9
61.9
59.5 B2
2.4
2.6
0.1
72.2
72.3
7,6
63,8
3.1
56.65
Continued t “Lp. one
1.2 5.5120.7
5 5,5100,7
10 2.310 0.7
1.7 1 4 151.5
5,5100,7
1.7 2.4 2,8,17,30,1
1.7 2.817.00.1
8.3120.7
11,0100.7
2 3.4 1.2 5,513,50,7
5.5140.7
1.7 5.5190.1
1.7 5,513,313,3
5,510,05,0
2,822,00,1
1.5 2.8170.1
1.7 416.51.5
1.7 5.517.30.1
9 4120.1
1.7 0.5 .170.1
1.7 1.4170.1
1.0 5 107
1.7 2.417, 45.1
1.7 g, 4t7, 40.1
1.7 2,417,30,1
1.7. 2.4 „17.150.1
1, T 2,417,00,1
1.7 4,817,150, f
713O, G
8.5130.1
10130.1
4,8100,1
1 4,860.1
4,870.1
2.4220.1
1.7 0.517.15-0.1
t, 7 1,217,150,1
4 4.8170.1
0.5
0.5
0.3
0.4
0.75
0.225
0.46
0.6
0.5
0.225
0.1
0.4
0.1 ThO 4.0
0.4
0.2
0.3 V, 0, 4
0.4 ZnO 1
0.4 F 0.75
0.4
0.45
0.46
0.4
0.15
Oh go
0.30
0.45
0.60
0.45
0.5
0.5
0.3
1.0
0.9
0.8
0.2
0.45
0.45
0.45
Prodopheny pbl. t
t "S l m q"
Order 3721/59 Circulation 457 Subscription
VNIIPI USSR State Committee
for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
Production and printing company, Uzhgorod, Project Design, 4

权利要求:
Claims (5)
[1]
1. GLASS FIBER FOR REINFORCING CONCRETE, including SiO _4> ZrO ₂ , AfjO, at least one component from the group Ti0 ₂ , oxides of rare-earth elements, at least one component from the group Na ^ O, K ₂ 0, LijO, characterized the fact that, in order to increase the corrosion resistance to cement, it additionally contains Cr _g O ₃ in the following ratio of components, wt.%:
SiO ₂ 55-75
ZrOi6-22
AfjOj0.1-7
At least one component from the group T10 _g , rare earth oxides 0.5-15.9
At least one component from the group
Na ₂ O, K _g 0, Li ₂ 0 11-23
Cr ₂ O, 0.1-1 and the content of TiO ₂ does not exceed 10%.
[2]
2. Glass fiber according to claim 1, characterized in that it further comprises at least one component from the group MgO, CaO, PbO, ZnO, MnO, CuO, NiO, CoO, FeO in an amount of 1-9 wt.%.
[3]
3. Fiberglass according to paragraphs. 1 and 2, characterized in that it additionally contains one component from the group Th0 ₂ , B O ,, VjOy, Ta _g O, -, MoO ,, Hf0 ₂ in the amount of '1-4 _and May. %
[4]
4. Fiberglass according to paragraphs. 1 and 2, characterized in that it further 'contains F' in an amount of 0.75-0.9 wt.%.
[5]
5. Fiberglass according to paragraphs. 1-4, characterized by the fact that it contains AT _g O, not more than 5 wt.% When the content of ZrOz is more than 13 wt.%.
SU 1243619 AZ

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法律状态:

优先权:

---

申请号 | 申请日 | 专利标题

---

GB8006653|1980-02-27|

---