CN1244509A

CN1244509A - Glass fiber reinforced cement board and its production process

Info

Publication number: CN1244509A
Application number: CN 99114373
Authority: CN
Inventors: 陆根林
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-11
Filing date: 1999-08-11
Publication date: 2000-02-16

Abstract

The material for the glass fiber-reinforced cement board consists of: low-basicity white cement 53-55 wt%, yellows sand 37-39 wt%, anti-alkali glass fiber 8 wt% and small amount of quick-salidifier. The glass fiber-reinforced cement is produced through the technological process of mixing, 10 mesh sieving, putting in guniting or injection machine, molding, demolding and curing. It is sunning-resistant, heat-insulating, high in mechanical strength, anticorrosive, fire-retardant and suitable for various weather conditions.

Description

Glass fiber reinforced cement board and production technique thereof

What the present invention relates to is that a kind of glass that can be used as nonmetal casing material strengthens special cement plate and other production technique.

Box-type substation on the present domestic market, usually adopt metal cabinet, because metallic substance thermal conductivity height, influenced by variation of ambient temperature and cause internal temperature rise, influence normal power supply, the metal shell corrosion resistance is poor simultaneously, corrosion will appear in the short period of time, not only influence use but also influence attractive in appearance, especially more outstanding in coastal cities, along with the quickening of urban renewal progress, building groups such as residential quarter also all press for a kind of box-type substation that can coordinate mutually with architectural scene as supporting use, and the box-type substation of metallic substance obviously is can't adapt with it.

The objective of the invention is to defective, propose a kind of glass and strengthen special cement plate and other production technique at above-mentioned existence.

Technical solution of the present invention:

Material composition is made up of low basicity white cement, meticulous yellow sand, alkali-resistivity glass fibre, rapid solidification agent, wherein low basicity white cement accounts for the 53-55% of gross weight, meticulous yellow sand accounts for the 37-39% of gross weight, and the alkali-resistivity glass fibre accounts for 8% of gross weight, rapid solidification agent trace.

Best proportioning components: low basicity white cement accounts for 53% of gross weight, and meticulous yellow sand accounts for 39% of gross weight, and the alkali-resistivity glass fibre accounts for 8% of gross weight, the peptizer trace.

Its production craft step branch (1) injects cement, yellow sand according to the above ratio and adds the water stirring in the stirrer, churning time is 10-15 minute, (2) mix behind the micro-peptizer and to make its form slurry, (3) go into 10 purpose vibratory screening apparatuss in restir 10-15 minute, (4) go into the extruding type shotcrete machine, (5) slurry that comes out of shotcrete machine enters cutting spraying machine spray gun, inject air with compressor in spray gun simultaneously, and add glass fiber, (6) enter die cavity, (7) demoulding, the water maintenance.

Advantage of the present invention:

(1) performance of uprising solarization is strong, is difficult for heat conduction, can avoid causing that because of outside temperature is too high the temperature inside the box raises.

(2) have the characteristics of easy formation, external structure easily changes, and is ornamental strong, and environment is had adaptability and Harmony, adopts different exterior wall colors environment to be had the effect of interspersing.

(3) have physical strength preferably, heat-resisting resistance to compression, shock-resistance is good.

(4) have moistureproofness preferably, can not adapt to various weather condition because of alternating hot and cold produces condensation.

(5) have antifreeze, anticracking, protection against corrosion, fire protection flame retarding characteristic.

Embodiment:

Get 2000 kilograms of low-alkalinity sulphoaluminate white cements (L-SAC-425), (screen cloth 10 orders/2.5mm) 1407 kilograms, 296.32 kilograms in alkali-resistivity glass fibre are got peptizer (801 glue) trace to get meticulous yellow sand.Add in the stirrer and add 1022 kg of water with the cement of above-mentioned weight, yellow sand and stirred 12 minutes, and then mix peptizer and stir and to make its form slurry in 13 minutes, slurry is gone into vibratory screening apparatus, the frequency of this bobbing machine 150 times/minute, screen cloth 10 orders, slurry behind the sieve is gone into extruding type shotcrete machine (model: UBJ-1.8J1), reenter cutting spraying machine (model: GRC-FD ₁), to go into spraying machine and in spraying machine, inject air (0.6Mpa) with compressor simultaneously, glass fiber also enters in the spraying machine simultaneously, enters die cavity at last, carries out the water maintenance behind the demoulding, 25 ℃ of temperature, 72 hours time.

Claims

1, glass fiber reinforced cement board, the material composition that it is characterized in that it is made up of low basicity white cement, meticulous yellow sand, alkali-resistivity glass fibre, rapid solidification agent, wherein low basicity white cement accounts for the 53-55% of gross weight, meticulous yellow sand accounts for the 37-39% of gross weight, the alkali-resistivity glass fibre accounts for 8% of gross weight, rapid solidification agent trace.

2, glass fiber reinforced cement board according to claim 1, the best proportioning components that it is characterized in that it are that low basicity white cement accounts for 53% of gross weight, and meticulous yellow sand accounts for 39% of gross weight, and the alkali-resistivity glass fibre accounts for 8% of gross weight, the peptizer trace.

3, the production technique of glass fiber reinforced cement board, the processing step branch (1) that it is characterized in that it is according to the above ratio cement, yellow sand injects in the stirrer and adds 30% water that accounts for its weight and stirs, churning time is 10-15 minute, (2) mix behind the micro-peptizer and to make its form slurry in restir 10-15 minute, (3) go into 10 purpose vibratory screening apparatuss, (4) go into shotcrete machine behind the sieve, (5) slurry that comes out of shotcrete machine enters spraying machine, use compressor injecting compressed air (0.5-0.6Mpa) in spraying machine simultaneously, add glass fiber, (6) enter die cavity, (7) demoulding, water maintenance.