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CN1089322C - Glass fibre cement - Google Patents

Glass fibre cement Download PDF

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Publication number
CN1089322C
CN1089322C CN98117267A CN98117267A CN1089322C CN 1089322 C CN1089322 C CN 1089322C CN 98117267 A CN98117267 A CN 98117267A CN 98117267 A CN98117267 A CN 98117267A CN 1089322 C CN1089322 C CN 1089322C
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China
Prior art keywords
cement
glass fibre
fibre cement
sio
grog
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CN98117267A
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CN1245154A (en
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张丕兴
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C04B7/42—Active ingredients added before, or during, the burning process
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00198—Characterisation or quantities of the compositions or their ingredients expressed as mathematical formulae or equations

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

The present invention relates to glass fibre cement used to manufacture glass fiber cement products. Clinker of the glass fibre cement is sintered in an oxidizing or neutral atmosphere under the temperature range of 1250 to 1400 DEG C and uses sosoloid of calcium sulfoaluminate solid solution Zn and Zr ions as main ore phases. The clinker is composed of components with the proportion by weight: 8% to 13% of SiO, 25% to 35% of Al2O3, 1% to 6% of Fe2O3, 0% to 48% of CaO4, 0% to 3% of TiO, 0% to 3% of MgO, 8% to 12% of SO3, 0.5% to 2% of ZnO and 1% to 3% of ZrO2. According to use requirements, a certain amount of gypsum and other admixtures are added during use, and the cement is formed by a milling process.

Description

Glass fibre cement
The present invention relates to a kind of low alkalinity cement, in particular for making a kind of special cement---the glass fibre cement of glass fiber reinforced cement goods.
Make the used cement of glass fiber reinforced cement goods, produce oxyhydroxide during aquation medium-alkali glass fibre is corroded, the intensity of glass fibre is reduced, influence goods work-ing life.
Purpose of the present invention provides a kind of high grade cement of making the glass fiber reinforced cement goods of specializing in, it is glass fibre cement, can alleviate the erosion of cement greatly to glass fibre, and have higher early strength and later strength, and basicity is low, and free expansion is little, the freezing and thawing performance height, the drying shrinkage value is little, good endurance, and setting time is short.
Characteristics of the present invention are at CaO-SiO 2-Al 2O 3-CaSO 4Introduce Zn and Zr ion in the system, its grog is that what to be sintered in 1250 ℃～1400 ℃ temperature and oxidation or neutral atmosphere is the glass fibre cement grog of main mine phase composite with anhydrous calcium sulphoaluminate solid solution Zn and Zr ionic sosoloid, and chemical constitution is expressed as follows with weight percentage:
SiO 2 8～13％
Al 2O 3 25～35％
Fe 2O 3 1～6％
CaO 40～48％
TiO 2 0～3％
MgO 0～3％
SO 3 8～12％
ZnO 0.5～2％
ZrO 2 1～3％
Best compositing range is expressed as follows with weight percentage:
SiO 2 8～10％
Al 2O 3 32～35％
Fe 2O 3 1～3％
CaO 42～45％
TiO 2 ＜3％
MgO ＜3％
SO 3 8～11％
ZnO 0.5～1.5％
ZrO 2 1～2％
Making of cement of the present invention is to add a certain amount of gypsum and admixture to grind and form in above-mentioned glass fibre cement grog.
The gypsum amount of allocating into is undertaken by following formula
If grog is 100 weight parts, the gypsum amount of allocating into
Figure C9811726700041
M is a coefficient in the formula, according to goods early strength height, and the different and size of decision M of the requirement of unit weight size, the M number gets 0.5～10.
Al 2O 3Be Al in the grog 2O 3% (weight)
SO 3Be SO in the gypsum 3% (weight)
It is 0.3～0.5% that above-mentioned admixture kind has citric acid adding amount; The Wingdale add-on is 10%～30%; The tuff add-on is 5～20%.
Below be three embodiment of the present invention:
It is as follows that example 1. glass fibre cement grogs are formed percentage ratio: SiO 28.07%, Al 2O 333.71%, Fe 2O 31.06%, CaO 43.01%, and MgO 0.23%, TiO 21.05%, SO 310.11%, ZrO 0.92%, ZrO 21.34
Get above composition grog 100kg, press gypsum incorporation calculation formula, when getting M=0.5, calculate the gypsum amount of allocating into 9.7kg, and mix the 0.3kg citric acid outward, mix grinding becomes glass fibre cement in ball mill, and its physicals is listed table 1 in.
It is as follows that example 2. glass fibre cement grogs are formed percentage ratio: SiO 210.76%, Al 2O 332.41%, Fe 2O 31.10%, CaO 42.92%, and MgO 0.21%, TiO 21.01%, SO 39.05%, ZnO 0.68%, ZrO 21.72
Get above grog 100kg, press gypsum incorporation calculation formula, when getting M=1.5, calculating the gypsum amount of allocating into is 24.25kg, and mixes Wingdale blended material 30kg outward, mix grinding glass fibre cement in ball mill, and its physicals is listed in the table 1.
It is as follows that example 3. glass fibre cement grogs are formed percentage ratio: SiO 28.74%, Al 2O 333.04%, Fe 2O 31.10%, CaO 42.98%, and MgO 0.28%, TiO 21.39%, SO 310.03%, ZnO 0.89%, ZrO 21.49.With the grog 100kg of above-mentioned component, press gypsum incorporation calculation formula, getting M is 10 o'clock, and calculating gypsum is 215.58kg, and mixes tuff 10kg outward, and mix grinding is a glass fibre cement in ball mill, checks its rerum natura, and is as shown in table 1.
Table 1
Title Specific surface area (m 2/kg) Time of coagulation Degree of free swelling (%) pH Folding strength (MPa) Ultimate compression strength (MPa)
Initial set (time: divide) Final set (time: divide) 1 day 3 days 7 days 28 days 1 day 3 days 7 days 28 days
Example 1 545 0：45 1：02 0.04 9.86 6.0 6.9 7.5 8.4 49.1 61.7 67.6 75.9
Example 2 480 0：36 0：57 0.06 10.03 5.5 6.3 7.1 8.6 41.6 51.4 59.6 64.7
Example 3 518 0：30 0：50 0.08 10.10 5.0 5.6 6.5 6.7 37.4 45.2 48.8 60.3
Existing H 70 582 0：22 0：32 0.098 10.21 - 4.7 4.4 5.6 - 32.5 39.5 44.2
Existing H 60 580 0：20 0：40 0.098 10.21 - 5.9 5.1 5.9 - 32.5 39.5 51.1
Carrying out moisture at 50 ℃ corrodes fast, glass fibre cement of the present invention and medium-alkali glass fibre or alkali resistant glass fiber is compound, in addition that I type low alkalinity cement or silicate cement and medium-alkali glass fibre or alkali containing glass fibre is compound, compare test, the result shows that glass fibre cement of the present invention is more light than existing silicate cement and low alkalinity cement to the erosion of glass fibre, and its weather resistance is equivalent to I type low-alkalinity sulphoaluminate cement more than 2 times, be 50 times of silicate cement, the results are shown in the table 2.
Table 2
Glass fibre cement composite glass fiber weather resistance science of the present invention is calculated reasoning, and under physical environment non-bearing condition, decaying at 50% o'clock with glass fiber strength is working life: its correlation data sees Table 3.
Table 3
The compound medium-alkali glass fibre durability of portland cement is that 1 year compound alkali resistant glass fiber durability of portland cement is that 17 years compound medium-alkali glass fibre durability of I type low alkalinity cement are that 20 years compound alkali resistant glass fiber durability of I type low alkalinity cement are that 62 years compound medium-alkali glass fibre durability of glass fibre cement are that 52 years compound alkali resistant glass fiber durability of glass fibre cement are 155 years
Under physical environment non-bearing condition, the compound medium-alkali glass fiber of glass fibre cement exceeds with glass fiber strength retention rate 50% wherein, and weather resistance can reach more than 50 years, and if compound alkali resistant glass fiber weather resistance can reach more than a century.
Advantage of the present invention is as follows:
Glass fibre cement of the present invention can be used for compound medium-alkali glass fibre or alkali resistant glass fiber is produced glass fiber reinforced cement (GRC) goods and early strengthening and high strengthening cement concrete, add a certain amount of colouring agent with it and grind into coloured cement, the making articles good endurance, good weatherability, indeformable, colour-fast, the frosting of not whitening, can be used for color concrete, inorganic coating, artificial colored stone (comprising artificial marble and granolith etc.).

Claims (2)

1. a glass fibre cement that is used to make the glass fiber reinforced cement goods is characterized in that at CaO--SiO 2--Al 2O 3--CaSO 4Introduce Zn and Zr ion in the system, its grog is that what to be sintered in 1250～1400 ℃ of temperature and oxidation or neutral atmosphere is the glass fibre cement grog of main mine phase composite with calcium sulphoaluminate solid solution Zn and Zr ionic sosoloid, its chemical composition range is expressed as follows with weight percentage:
SiO 2 8～13％
Al 2O 3 25～35％
Fe 2O 3 1～6％
CaO 40～48％
TiO 2 0～3％
MgO 0～3％
SO 3 8～12％
ZnO 0.5～2％
ZrO 2 1～3％
In above-mentioned cement clinker, add a certain amount of gypsum and admixture grinds the glass fibre cement that forms.
2. glass fibre cement according to claim 1 is characterized in that the compositing range of its grog is expressed as follows with weight percentage:
SiO 2 8～10％
Al 2O 3 32～35％
Fe 2O 3 1～3％
CaO 42～45％
TiO 2 ＜3％
MgO ＜3％
SO 3 8～11％
ZnO 0.5～1.5％
ZrO 2 1～2％。
CN98117267A 1998-08-14 1998-08-14 Glass fibre cement Expired - Fee Related CN1089322C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN98117267A CN1089322C (en) 1998-08-14 1998-08-14 Glass fibre cement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN98117267A CN1089322C (en) 1998-08-14 1998-08-14 Glass fibre cement

Publications (2)

Publication Number Publication Date
CN1245154A CN1245154A (en) 2000-02-23
CN1089322C true CN1089322C (en) 2002-08-21

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100398478C (en) * 2006-08-24 2008-07-02 章永泰 High calcium ion cement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1084149A (en) * 1992-09-09 1994-03-23 钟家根 Inorganic glass fibre reinforced material
CN1092751A (en) * 1990-03-23 1994-09-28 冯泰克国际有限公司 Interground fiber cement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1092751A (en) * 1990-03-23 1994-09-28 冯泰克国际有限公司 Interground fiber cement
CN1084149A (en) * 1992-09-09 1994-03-23 钟家根 Inorganic glass fibre reinforced material

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