CN1039488C - High strength cement mortar and antistatic moveable floor - Google Patents
High strength cement mortar and antistatic moveable floor Download PDFInfo
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- CN1039488C CN1039488C CN 89105806 CN89105806A CN1039488C CN 1039488 C CN1039488 C CN 1039488C CN 89105806 CN89105806 CN 89105806 CN 89105806 A CN89105806 A CN 89105806A CN 1039488 C CN1039488 C CN 1039488C
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Abstract
The present invention relates to a high-strength cement mortar and antistatic movable floor which is characterized in that cement, stuffing, additives, a stabilizing agent, a modifying agent and water are uniformly mixed and are made into high-strength cement mortar with bulk weight, buckling strength of 20 to 120MPa, surface hardness of 70 to 90 Brinell degree, drying shrinkage of 0.03 to 0.2% and adjustable specific resistance through efficient stirring, hot compressing and hot curing; the strength of the high-strength cement mortar is 90 to 130% of the original strength after being soaked in hydrotherm at the temperature of 80 DEG C. for 72 hours. The high-strength cement mortar is made into the antistatic movable floor through molding and compression; the secondary processing of facing, coating, cutting, abrasive drilling, etc., can be carried out on the basis of finished products.
Description
The present invention relates to the composition and the production method thereof of cement products.
Cement material is one of topmost basic material of building trade.But, generally be no more than 10Mpa, so the use range of cement material has been subjected to very big restriction because the bending strength of cement material is lower.In recent years, promulgateds by the State Council such as Great Britain and America are understood a kind of macro-defect-free cement (Micro Defect Free Cement) that is referred to as, and the bending strength of cement can be brought up to 150Mpa at one stroke.But this achievement is owing to its shrinking percentage too high (shrinking percentage is about 3%), and the intensity that the longterm strength instability is promptly soaked after 48 hours in hydrothermal solution only is the 30-50% of former intensity, therefore, can not drop into industrial production always.Also commodity of doing with regard to macro-defect-free cement of no use.(number of patent application: 88105676.6) super high-strength cement material composition and manufacture method thereof have proposed the new processing method of a cover to China's patent, but it is still a kind of achievement in research of basic material property, does not also solve above-mentioned two defectives that macro-defect-free cement exists.
Along with the development of society, the use of robot calculator, highly sophisticated device is more and more universal.These high-precision electronicss have strict requirement to anti-electrostatic.Therefore, along with the development of high precision plant and instrument such as robot calculator, antistatic raised floor has become a special production industry.The conventional at present antistatic raised floor that uses has following several:
1, aluminium floor
The aluminium floor is to be base material with the alloy aluminum, adopts working method moulding such as casting or punching press, pastes one deck antistatic veener or brushing antistatic coating more in its surface.This floor intensity height, good stability, temperature influence is little, be good at present antistatic raised floor, but its cost is very expensive, consume a large amount of non-ferrous metals.
2, steel floor
Steel floor is base material with the steel plate, adopts working method moulding such as punching press and welding, pastes one deck antistatic veener or brushing antistatic coating again on the surface.The cost on this floor is more lower slightly than aluminium floor, and its maximum shortcoming is that amount of deflection is big, and gets rusty easily.
3, timber floor
Timber floor is a base material with flat-press wood chipboard or multiplying plywood, behind excision forming, pastes antistatic veener or brushing antistatic coating again on the surface.Though the cost on this floor is cheap, it is not prevented fires, and creep takes place easily, and for preventing the generation of creep, the thickness on this floor has reaches 40mm.
4, composite floor board
Composite floor board is a base material with steel plate and shaving board, after composite molding, pastes antistatic veener or brushing antistatic coating on its surface again.Pack into then in the box of making of galvanized iron sheet.Though this floor has overcome the shortcoming of steel floor and timber floor to a certain extent, but still does not tackle the problem at its root, and the complete processing complexity, cost is higher.
5, concrete floor
This floor is to be basic material with cement, adds fiber reinforced material, as asbestos, glass fibre etc.This floor is still in experimental stage.
The purpose of this invention is to provide a kind of high-strength mortar, and take this to provide a kind of low price, antistatic property is good, fire prevention, non-corrosive, the antistatic raised floor that intensity is high.
The present invention is achieved in that
Adopt one or more cement and quartz sand, mix stablizer, adjust agent and auxiliary, mix, through efficient stirring, hot-forming and suitable maintenance, promptly become high-strength mortar,, can once shaped go out antistatic raised floor as being equipped with suitable mold in hot pressing.
The present invention generally adopts aluminate cement, also can adopt other cement such as silicate cement, also can adopt the mixture of different cement.The granularity of quartz sand is not more than 3mm, and the weight ratio of its incorporation and cement is not less than 30: 100, and cement and quartz sand are main raw material(s)s of the present invention.The auxiliary that mixes is a polyvinyl alcohol, Polyacrylamide, other water-soluble polymerss, organic polymer emulsion or their mixture, its consumption is 1-15 with the weight ratio of (cement+quartz sand): 100, wherein the incorporation of polyvinyl alcohol is not more than 5: 100 with the weight ratio of (cement+quartz sand), stablizer is a gypsum, its effect is the longterm strength of stable material, the consumption of stablizer is not less than 1: 100 with the weight ratio of (cement+quartz sand), adjust agent and adopt glycerol, ethylene glycol, borax, boric acid, graphite, metal powder etc., its effect is a whipping performance of adjusting material, processability, mechanical property and electric property.Adjusting the consumption of agent and the weight ratio of (cement+quartz sand) is 0-15: 100, and the consumption of water is 10-50 with the weight ratio of (cement+quartz sand) in the component: 100.
Will be above-mentioned each component send into High-efficient Stirrer after mixing and stir, carry out hot-formingly after the stirring, make antistatic raised floor.Hot-forming controlled temperature is not less than 60 ℃, and pressure is not less than 1Mpa, and hot pressing time is no less than 10 minutes, carries out thermal curing then in the hot pressing environment more than 50 ℃, and curing time is no less than 8 hours after maintenance, and promptly the acquisition capacity is 1.7-2.4g/cm
3, flexural strength is 20-120Mpa, and surface hardness is the 70-90 barbey degree, and contract with dry rate is 0.03-0.2%, and the intensity of 80 ℃ of hydrothermal solution immersions after 72 hours is the 90-130% of former intensity, the antistatic raised floor that the high strength cement mortar that resistivity is adjustable is made.The system resistance on this floor is 10
5-10
8Between the Ω, electrostatic potential is the 300-1000 volt.
With the antistatic raised floor that high strength cement mortar is produced, have that production technique is simple, cost is low, antistatic veener need not pasted in the surface, electric performance stablity, good rigidity, not corrosion, advantage such as the fire prevention workability is good.
Embodiment: (system resistance is pressed the detection method detection of GB6650-86 in the example)
Calculating P is a load, and L is a fulcrum length, and B is a specimen width, and H is a specimen thickness
Example 1, high-alumina cement: 70 parts; Quartz sand: 30 parts; PVA17-88:3 part; Water: 15 parts; Pigment: 3 parts; Gypsum: 3 parts.
Laggard punching block hot pressing stirs.Hot pressing condition is: pressure 4Mpa, and 120 ℃ of temperature, 60 minutes time, after the demoulding, indoor leaving standstill 24 hours, in 80 ℃ of dry environments dry 20 hours again.
Measuring result:
Contract with dry rate＜0.08% flexural strength＞35MPa
System resistance 4～7.0 * 10
5Ω
80 ℃ of hot-water soaks are dried flexural strength after three days again) 40MPa
Example 2, high-alumina cement: 70 parts; Quartz sand: 30 parts; PVA17-88:5 part; Glycerol: 1 part; Pigment: 3 parts; Water: 15 parts.
Hot pressing and heat curing condition are with example 1.
Test result:
Contract with dry rate＜0.1% flexural strength＞40MPa
System resistance＞7～9 * 10
5Ω
85 ℃ of hot-water soak oven dry again after three days, flexural strength＞25MPa
Example 3, high-alumina cement: 60 parts; Quartz sand: 40 parts; PVA17-88:4 part; Glycerol: 1 part; Pigment: 3 parts; Water: 16 parts; Gypsum: 4 parts.
Hot pressing and heat curing condition are with example 1
Test result:
Contract with dry rate＜0.1% flexural strength＞55MPa
System resistance 2-5 * 10
6Ω
85 ℃ of hot-water soak oven dry again after three days, flexural strength＞60MPa
Example 4, high-alumina cement: 50 parts; Quartz sand: 50 parts; PVA17-88:5 part; Glycerol: 1:5 part; Water: 17 parts; Graphite: 2 parts; Pigment: 3 parts; Gypsum: 3 parts.
Hot pressing and curing condition are with example 1
Test result:
Contract with dry rate＜0.05% flexural strength＞40MPa
System resistance 3-5 * 10
6Ω
80 ℃ of hot-water soak oven dry again after three days, flexural strength＞48MPa
Example 5, high-alumina cement: 70 parts; Quartz sand: 30 parts; PVA17-88:5 part; Glycerol: 1 part; Pigment: 1 part; Water: 16 parts; Gypsum: 4 parts.
Hot pressing condition is with example 1, indoor leave standstill 24 hours after, in 70 ℃ of dry environments dry 28 hours again.
Test result:
Contract with dry rate＜0.15% flexural strength＞80MPa
System resistance 1-3 * 10
6Ω
85 ℃ of hot-water soak oven dry again after three days, flexural strength＞90MPa.
Claims (2)
1, high strength cement mortar, it is characterized in that by cement, quartz sand, auxiliary, stablizer, adjusting agent and water mixes and makes, cement adopts aluminate cement, silicate cement and other kind cement or their mixture, auxiliary uses polyvinyl alcohol, Polyacrylamide, water-soluble polymers, organic polymer emulsion or their mixture, stablizer is a gypsum, adjust agent and adopt glycerol, ethylene glycol, graphite, metal powder, the granularity of quartz sand is not more than 3mm, the weight ratio of its incorporation and cement is not less than 30: 100, auxiliary is 1-15 with the weight ratio of (cement+quartz sand): 100, the incorporation of the polyvinyl alcohol in the auxiliary is not more than 5: 100 with the weight ratio of (cement+quartz sand), the consumption of stablizer is not less than 1: 100 with the weight ratio of (cement+quartz sand), and adjusting the consumption of agent and the weight ratio of (cement+quartz sand) is 0-15: 100, and the consumption of water is 10-50 with the weight ratio of (cement+quartz sand): 100.
2, a kind of antistatic raised floor, it is characterized in that making through hot-forming with the described mortar of claim 1, hot-forming controlled temperature is not less than 60 ℃, pressure is not less than 1MPa, hot pressing time is no less than 10 minutes, carry out thermal curing then in the thermal environment more than 50 ℃, curing time is no less than 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105806 CN1039488C (en) | 1989-12-09 | 1989-12-09 | High strength cement mortar and antistatic moveable floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105806 CN1039488C (en) | 1989-12-09 | 1989-12-09 | High strength cement mortar and antistatic moveable floor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1052348A CN1052348A (en) | 1991-06-19 |
| CN1039488C true CN1039488C (en) | 1998-08-12 |
Family
ID=4856454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105806 Expired - Fee Related CN1039488C (en) | 1989-12-09 | 1989-12-09 | High strength cement mortar and antistatic moveable floor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039488C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6913819B2 (en) * | 2002-12-27 | 2005-07-05 | Christine E. Wallner | Cementitious veneer and laminate material |
| CN100418759C (en) * | 2005-11-03 | 2008-09-17 | 苏州大学 | Anti-static layered board and preparation method thereof |
| CN102432249B (en) * | 2011-09-30 | 2015-01-07 | 广东东鹏陶瓷股份有限公司 | Anti-static composite concrete and preparation method thereof |
| CN103224373B (en) * | 2013-03-21 | 2014-10-22 | 叶长青 | Anti -static decoration plate |
| CN103159445B (en) * | 2013-03-21 | 2014-11-12 | 叶长青 | Antimagnetic veneer |
| CN104018645B (en) * | 2014-05-27 | 2016-03-16 | 叶长青 | A kind of construction method of self-heating floor |
| CN108395214B (en) * | 2018-05-11 | 2020-05-12 | 乐清市城镇建设工程公司 | Heat-preservation noise-reduction building panel for house construction and preparation method thereof |
| CN111848074A (en) * | 2020-07-22 | 2020-10-30 | 辽宁科技大学 | Antistatic floor based on magnesium silicate cementing material and preparation method |
-
1989
- 1989-12-09 CN CN 89105806 patent/CN1039488C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1052348A (en) | 1991-06-19 |
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