CN1061582A

CN1061582A - Coal ash foam sandwich shape paving blocks

Info

Publication number: CN1061582A
Application number: CN 90102985
Authority: CN
Inventors: 邢鸿生
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-11-17
Filing date: 1990-11-17
Publication date: 1992-06-03

Abstract

A kind of coal ash foam sandwich shape paving blocks, pour in the mould by flyash, cement, gypsum, asbestos or other filamentary material wood calcium and water mixed slurry, through the pressurization intermediate hollow building block shell, insert with polystyrene foamed plastics or other light material then, seal with the flyash slurry, it is that groove or each side had not only been had box pin joint but also a tool groove that this building block one side is the box pin joint opposite side, has that unit weight is light, breadth is big, thickness is little, a multifrequency nature such as waterproof and sound insulation.

Description

Coal ash foam sandwich shape paving blocks

The present invention relates to building material field, and especially a kind of is the foam sandwich shape paving blocks that main raw material is made with flyash.

In recent years, develop rapidly along with Industry and Construction, people are for solving problems such as the boiler waste material is also made full use of, carried out a large amount of research, usually people adopt mostly with a large amount of coal ash instead cement, add yellow sand and water again and make plate or brick, because plate that this mixture is made or brick need length time of coagulation, performance is more crisp and unit weight is big, resistance to bend is poor, can only make the profile of flat shape, if it is built into non-load bearing partition, the then not only unnecessary and extra load-carrying requirement that has increased buildings has brought difficulty to building operation.

The object of the present invention is to provide a kind of unit weight light, flexural capacity is strong, and ultimate compression strength height, time of coagulation lack, and build a wall conveniently, are applicable to a kind of coal ash foam sandwich shape paving blocks of non-load bearing wall.

The present invention is by being on the basis of main raw material with flyash, add other subsidiary material again, improve its ultimate compression strength and flexural capacity with this, the way of building block being made center folder foam and reducing its weight realizes goal of the invention, its technical characterictic is to get by weight flyash 55-90%, asbestos or other filamentary material 3-15%, gypsum 2-15%, wooden calcium 0.1-1% add water 20-40% and fully stir into half wet shape mixture, because flyash is in Ca(OH at normal temperatures) ₂In the aqueous solution, arrive the Vitrea surface of coal ash ball shape by diffusion, chemical adsorption and erosion take place, and generation hydrated calcium silicate and drated calcium aluminate, after the cement combination, enter aquation for the second time, these hydrates are precipitated as the crystal and the staggered growth of mutual connection, have increased the cohesive force of mixture.In order to increase the flexural capacity of mixture, add a certain amount of asbestos or other filamentary material, because asbestos are serpentine asbestos or other filamentary material, have acidproof, alkaline-resisting and resistance toheat, fiber is horizontal vertical staggered, increase the mixture folding strength,, add gypsum CaSo in order further to improve the coagulative power of mixture ₄, 2H ₂O, because of it meets water softening, rapid setting and harden in drying process, and acquisition intensity, holding concurrently increases the adhesive action of mixture, wood calcium is a kind of wire macromolecular compound, good diffustivity is arranged, in mixture, add wooden calcium, can excite flyash activity and the moisture content that discharges in the mud coherent structure, increase the flowability of aggregate, promote the abundant aquation of cement and flyash, improve rate of set, mixture with half wet shape of above-mentioned five kinds of raw materials, pouring into a side is that groove or each side had not only been had in the middle of box pin joint but also the tool groove in the solid mould for the box pin joint opposite side, through pressurization 10-20MPa moulding, allow its seasoning condense, after the demoulding, the building block of center sky, with polystyrene foamed plastics or other light materials central space is filled up with the flyash slurry again and seals, a side box pin joint opposite side groove or each side not only had box pin joint but also a tool groove, have fp coal ash foam plastic clip core and build plate, it has outside the same fire performance of the closely knit building block of ordinary fly ash silicate, also has the light (≤700Kg/m of unit weight ³), the big (＞0.4m of breadth ²/ piece) thickness little (≤9Cm).Surfacing is smooth, puzzle joint box pin joint formula connects the contact surface of favourable expansion bonding slurry and discharges unnecessary slurry between backlash, reduce the masonry crack error, do the operation construction, the low remarkable advantage that waits of labour intensity, this block profile size can be decided by the building module cooperative dimensioning, and the masonry surface can need be reprocessed by decorating, and building block can be cut with common saw blade.

Example one

By weight, get flyash 65-80%, cement 8-14%, asbestos 5-10%, gypsum 5-15%, wooden calcium 0.4-0.7%, add water 20-30%, fully stir evenly half wet shape material, pour into mould, pressurization 10-18MPa becomes the hollow form housing.With polystyrene foamed plastics central space is filled up again and seal with coal ash pulp, promptly get a side box pin joint opposite side groove or each side and not only had a coal ash foam plastics sandwich shape paving blocks of box pin joint but also tool groove, recording ultimate compression strength is 7.5MPa, and folding strength is 1.8MPa

Example two

By weight, get flyash 70-90%, cement 10-15%, gypsum 7-15%, asbestos 7-9%, wooden calcium 0.3-0.6% add water 22-30%, fully stir evenly half wet shape material, pour into mould, pressurization 15-18MPa becomes the hollow form housing, with polystyrene foamed plastics or other filamentary material central space is filled up again, and seal with coal ash pulp, promptly get a side box pin joint opposite side groove or each side and not only had a coal ash foam plastics sandwich shape paving blocks of box pin joint but also tool groove.Recording ultimate compression strength is 2.0MPa for the 8.5MPa folding strength.

Example three

By weight, get flyash 60-75%, cement 12-15%, asbestos 8-10%, gypsum 9-11%, wooden calcium 0.2-0.5%, add water 24-35%, fully stir evenly half wet shape material, pour into mould pressurization 12-16MPa and become the hollow form housing, with polyethylene foams central space is filled up, and seal with coal ash pulp, promptly get a side box pin joint opposite side groove or each side and not only had a coal ash foam plastics sandwich shape paving blocks of box pin joint but also tool groove to record ultimate compression strength be that 100MPa, folding strength are 2.3MPa.

Claims

1, a kind of coal ash foam sandwich shape paving blocks is characterized in that its component is flyash 55-90%, cement 8-15% asbestos or other filamentary materials 3-15%, gypsum 2-15%, wooden calcium 0.1-1%.Add the half wet shape mixture that water 20-40% mixes thoroughly, pouring into the solid side in middle part establishes box pin joint, opposite side and establishes recessed or each side and not only had a mould of box pin joint but also tool groove, and pressurization 10-20MPa moulding allows it condense naturally to insert in the hollow building block shell with polystyrene foamed plastics or other light material, seal with the flyash slurry.