CN1186514C

CN1186514C - Combined shuttering for building

Info

Publication number: CN1186514C
Application number: CNB021141681A
Authority: CN
Inventors: 符震球
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2005-01-26
Anticipated expiration: 2022-05-31
Also published as: CN1382890A

Abstract

The present invention relates to a composite construction mould board using magnesite powder and a brine mixture as an adhesive agent and using saw dust as a filling agent. The present invention is characterized in that grain hulls, expanded perlite and fibrilia are doped in the composition of a board body, and simultaneously a layer of glass fiber cloth is compounded on the upper layer surface, the lower layer surface, and the outer layer surface of the board body. Furthermore, in the composition of the board body, the weight of the magnesite powder and the brine mixture are 40 to 50 % of the total weight of the doped substances, the weight of the saw dust is 25 % of the total weight of the doped substances, the weight of the grain hulls is 20 to 25 % of the total weight of the doped substances, the weight of the expanded perlite is 5 to 10 % of the total weight of the doped substances, and a proper quantity of fibrilia is doped. The composite construction mould board manufactured according to the proportioning is a board body which is from 5 to 30mm and is pressed under a press machine with 300 to 500 tons, can be sawed, shaved and nailed, can completely replace wooden, steel and bamboo mould boards which are generally used at present, can is beneficial to the protection of forest resources and mineral resources.

Description

A kind of composite building template

Technical field

The present invention relates to a kind of composite building template, belong to construction work with material or auxiliary material class.

Background technology

Construction formwork is one of the auxiliary material that must use in the building engineering construction, has been that main that people continue to use always since what years originated with material and make construction formwork with timber.In recent years,, in building trade, gradually adopted steel template and bamboo product or bamboo and wood products's template, and other sheet material has partly substituted wood template along with reducing day by day and human enhancing of the forest reserves to environmental protection consciousness.But no matter be to adopt steel template, Bamboo form board or timber plate, remain and consuming human known available resources, along with the expansion day by day of global village population, the raising of urbanization and industrialization degree, these known passing through with the increasing progressively of total amount consumed of resource can't be reversed.Therefore, seek new resource, the unknown new material of exploitation is still one of great themes of human production activity.

Summary of the invention

Purpose of the present invention: aim to provide a kind of building form that does not need timber, steel and bamboo wood, wish that it can not only substitute at present the above-mentioned material of usefulness, and the same energy with above-mentioned material be cut out, can follow closely, can saw, and have corresponding strength, can adapt to the prerequisite functional performance of construction formwork.

This both without timber, also, realize by following technical proposals without the construction formwork of steel and bamboo clappers material.

This containing with magnesium oxychloride and bittern mixture is cementing agent, is the composite building template of filler with the wood sawdust, it is characterized in that:

Husk, expanded perlite and flaxen fiber have also been mixed in A, the described plate body constituent.

Compound glass cloth on the outer layer surface up and down of B, described plate body.

In this composite building template body, the percent by volume incorporation of its constituent is respectively: magnesium oxychloride+bittern mixture accounts for the 40-50% of material total amount; Wood sawdust accounts for 25% of material total amount; Husk accounts for the 20-25% of material total amount; Expanded perlite accounts for the 5-10% of material total amount; Simultaneously, also mixed an amount of flaxen fiber.

The mixture percent concentration of the described associativity bonding agent of being made up of magnesium oxychloride+bittern mixture is 26-30%.

The thickness of described plate body is 5-30mm.

The composite building template that designs and produces according to above technical scheme is because fully without bamboo and wood materials, therefore for saving forest and mineral resources, maintaining ecological balance, it is very useful keeping the sustainable development of human society; Simultaneously owing to adopt light material and glass, flaxen fiber as strength bar, thereby not only light weight, have good strength, and can saw and can follow closely, be fit to the instructions for use of construction formwork fully.

The specific embodiment

Below provide the proportioning embodiment of plate body material of the present invention.

Constituent	Embodiment 1	Embodiment 2	Embodiment 3
Constituent	Embodiment 1	Embodiment 2	Embodiment 3	Magnesium oxychloride+bittern	40％	45％	50％
Wood sawdust	25％	25％	25％	Magnesium oxychloride+bittern	40％	45％	50％
Wood sawdust	25％	25％	25％	Husk	25％	22.5％	20％
Expanded perlite	10％	7.5％	5％	Husk	25％	22.5％	20％
Expanded perlite	10％	7.5％	5％	Flaxen fiber	In right amount	In right amount	In right amount

The bittern that adopts in the above-mentioned table also can be prepared with magnesium oxide aqueous solution; Used flaxen fiber can be a ramie, also can be with jute or other cotton fiber.

Further set forth the present invention below in conjunction with the foregoing description.

Because the magnesium oxychloride of occurring in nature is taken from natural mineral products mostly, owing to differ in the place of production, wherein magnesian content also has certain difference, for satisfying the physical and mechanical property requirement of finished product, therefore, require its mixture to be controlled at about 26-30% at preparation magnesium oxychloride and bittern mixture (also can adopt magnesium oxychloride and magnesium chloride solution to prepare) at the percent concentration of normal temperature (30 ℃ time).Then, stir by batching according to the proportioning of embodiment 1-3, place mat glass cloth, stone, compression moulding, drying, operations such as side cut shaping can obtain composite building template of the presently claimed invention.

Its concrete preparation method is as follows:

1, at first carries out the collocation of material, when the content of magnesia of magnesium oxychloride does not meet product requirement, can add the aqueous solution of magnesium chloride and adjust by said ratio; Then carry out the even stirring of various materials.

2, secondly be beginning stone and compression moulding, promptly be in shaping mould, to spread earlier a layer glass cloth, then will spread through the material that stirs again, overlay layer of glass fiber fabric on the upper strata more in addition, and under the effect of 300-500 ton press, it is pressed into the available sheet material of 5-30mm.

3, it three is to carry out artificial or air dry.

4, it four is the finishings of cutting edge, and is packaged into final products.

The construction formwork of this non-bamboo, non-die model, owing to mixed the light material wood sawdust in its constituent, expanded perlite and husk, so plate body is relatively lighter and handier generally, is convenient to the constructor and moves, and alleviates labor strength; In addition, because the expanded perlite that mixes has plasticity, flaxen fiber and glass cloth is the certain pliability of tool again, therefore in the existing suitable intensity of the compound template of this kind of 300-500 ton press compacted under, resembles elasticity and toughness plank and the bamboo board simultaneously again; Not only can cut but also available nail reinforces the connection with sawing.

Claims

1, a kind of composite building template, it contains magnesium oxychloride and the bittern mixture is a cementing agent, and wood sawdust is a filler, it is characterized in that:

Husk, expanded perlite and flaxen fiber have also been mixed in A, the described plate body constituent;

Each compound layer of glass fiber fabric on the outer layer surface up and down of B, described plate body.

2, composite building template according to claim 1, it is characterized in that the percent by volume incorporation of described plate body constituent is respectively: magnesium oxychloride+bittern mixture accounts for the 40-50% of material total amount; Wood sawdust accounts for 25% of material total amount; Husk accounts for the 20-25% of material total amount; Expanded perlite accounts for the 5-10% of material total amount; And mixed an amount of flaxen fiber.

3, composite building template according to claim 1, the thickness that it is characterized in that plate body is at 5-30mm.