US1890432A

US1890432A - Building construction and process for making the same

Info

Publication number: US1890432A
Application number: US212713A
Authority: US
Inventors: Billner Karl Pauli
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-08-13
Filing date: 1927-08-13
Publication date: 1932-12-06
Anticipated expiration: 1949-12-06

Description

-. BUILDING coNsTRI'JcTIoN AND PRooEss Fon mime THE sms* v FiledAug. 1:15.- 192? ATTORNEYS. n

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' This invention relates to building construction `end particularly -toeomposite construer tien such as maybenseful in the constructionof floors.`

'A the present day building industry, oi the greetest demands is for e light material which will have great strength both under shearing stresses and under bending moments. Such constructions not onl save material but also reduce the weight to e can ried by the foundations of buildings wherein these constructions are installed. This latter result ermits of higher buildings with `oundations and by .the saving in oi the building for theseme amount of in the blast furnace industry v:for mamy u yeers, one of the problems has'been to get rid si the slag as a profitable bjr-product.

The primary ob3ect of this invention is the provision of e building construction which will permit of a light construction having greet shearing strength, great strength in re.- bending moments es well es great compression strength and at the same time will utilize the slag from blast furnaces, thus giving e large and new outlet for.. this material ssfbyroduct of the blast furn'ces. i@ Anot er object of this'inventienis the provision of e building structure wherein beams or slebs of blast furnaceslag forms si light strong body portion which is reinforced by steel.

155 nother and `still further object of this insession.l islthe ver to t e similarity in the molecular make-up of e similar reinforcement in en ordinary concrete structure it is believed that I obtain a much stiiier and stronger structure due thesla endfor example, steel reinforcement which may use. It is well known that there 1s For this reason I obtain-a stronger union be tween the slag and the metallic reinforcement than could ever be possible with a combination of,-for exemple, steel and Portland cement. A vfurther object of my invention is,

eater' cohesion between similar compof sltions than between dissimilar composltions.

lil() therefore, to provide anim roved reinforced elementJ for use in buil in construction wherein the reinforcement wilbe closely com nected to the body of the element.

A still further object is to provide e process for the production of such an element.

Fig. '1 is a perspective 'viewillustraiing my invention es applied to a. loor construction, portions being broken away.

Fi 2 is a perspective view of one of the elements.

Fig. 3 is a view similar to Fig. 2 but showing e different construction for the side wall slots.

F ig. 4 is a cross section on the line 4--4 of \Fig. 7 `illustrates across section of my invention on a planepassing through the remforcinfr bars.

s ,'fbeenior s jrgits .Y and n closer unionbetween the body ortion f put in the body of the element which I use to 1provision' of a blast furnace ab -having reinforcements `'in L10 designates I-beemswhich may form the dy to provide additional strength with Inain support ofl a floor, 1l bein concrete supporting members which may of 'concrete-poured around the lower portion of the I-bea-m.

The elements which form my invention I have designated by the

numerals

12, 12, 12". These elements arecomposed of slag, preferably of the porous "ariety and are cast around@ the reinforcements 13, and 13b respectively. The moulds in which these elements are cast may be provided with plates at the sides provided with ribs which will form recesses 14, 14* rand 14 respectively.

*u* `and the reinforcement than is the usuel concrete structures. 'in the illustrated embodiment of my invenv' tion have shown how the seme can be applied to a oor construction.` I have illus- 45 treted bow the beams or the plates can be laid f on the usual joists.

While the reinforcing means which I may possib e with make up the body of the structure such as a floor, may have a corresponding position to 100 cesses 14, 14 and 14' and by a suitable cement or other plastic material which will harden the reinforcing means may beheld rigid with relation to the elements l2, 12 and 12b which in the present illustrating embodiment are shown as beams. This cement or other plastic material also acts as a binder and reinforcing medium to prevent movement between the elements or beams and to transmit the strainsy placed upon one to the adjacent ones.

The type of reinforcing means 15a 'in the form shown in Fig. 3 would naturally assume the shape of the'recess la, the particular type of recess being dependent upon the type of duty to be performed by the building construction. In Fig. 1, I have. shown a concrete grout 16 filling the spaces between the elements 1Q. and a portion Cifra floor fill 17 broken away at the upper edge of the figure. In Fig. 7. I have illustrated onev form of reinforcement, the rods being placed so that near the middle of the span of thervr element the reinforcing means will be adjacent the bottom and at the outer ends will extend up .and over the position to be occupied by the I-beams of the floor structure when the assembly. is complete. The reinforcing means shown at 13 of Fig. 2 may be omitted from the element as shown in 12 if this is found to be desirable. In the structure shown in Fig. 3, the reinforcing means 15* and the cement or other plastic material which binds the reinforcing means in place, will act as the reinforcing agent for the element 12.

It is believed that by the use of slag as herein set forth, such as blast furnace slag that a very advantageous and useful building element may be had which attains the objects of the invention as above set forth, which will be cheap of manufacture and will assist the blast furnace manufacturers in disposing of their slag at considerable profit.'

It is to be understood that the particular embodiment described in detail and illustrated in the drawing is not to be construed as limiting the application of the invention and that modifications and changes may be made without departing from the spirit of the invention and Within the scope of the appended i claims.

Having described my invention, WhatvI claim and desire to secure by Letters Patent of the United States is 4 1. A building structure comprising relatively long pieces of blast furnace slag cast molten in complementary shapes and means for reinforcing the slag pieces the body of the slag being porous to reduce its weight.

2. A building structure comprising preconstructed strips of porous molten-cast blast furnace slag, said strips being placed side by side and means between the strips for locking them together. y

3. A building' structure comprising preconstructed beams of porous molten-cast blast furnace slag, said beams being side by side, a beam having a recess in a side adjacent to an adjacent beam, a reinforcing means having a portion within the recess.

4. A building structure comprising preconstructed beams of porous moltencast blast furnace slag, said beams being side by side, reinforcing means within the vbodies of the beams, the beams having recesses in their sides, reinforcing means in the recesses and means for filling the spaces in the recesses around the rein forcing means.

5..A building element comprising arela-v tivelyfflong piece vof porous molten cast blasty fin" i' ",fslag. y6 'building element comprising a rela- .tine jo'nggpiece of porous molten cast blast' furnace'fslagfhaving a recess on one side.

N"LA building element comprising a relatively; long piece of porous molten cast blast furnace vslag having a reinforcement within its body portion.

8. A building element comprising a relativelylong piece of porous molten cast blast furnace slag having steel reinforcing means extending-subst antially throughout its length, and having a recess on one of its long sides.

9. The process of preparing a building element which comprises the placing of metallic reinforcing means in a mould, treating blast furnace slag so that it will be porous and pouring the slag into the moulds while the slag is in a hot liquid state.

'10. The process ofpreparing a building elel ment whichv comprises the preparation of a mould, the placing of damp.. plates therein at the sides thereof, the placing of metallic reinforcing means in the mould and pouring hotliquid slag int-o the mould.

11. The process of preparing a building element'whichcomprises the preparation of-a. mould, the placing of damp plates therein at the sides thereof, the placing of metallic rein forcing means in vthe mould, treating slag so that it will be porous and pouring the slag into the moulds while the slag is in a hot liquid state.

In testimony whereof I hereunto aiiix my