OA21411A - New technical-ecological process for building construction based on cement block or treated laterite. - Google Patents

Abstract

The present invention relates to a new technical-ecological process for building construction based on cement blocks and/or treated laterite. It is known that modern building construction in accordance with the rules of the art raises many challenges that need to be resolved. The new technical-ecological process for building construction based on cement blocks or treated laterite (Plate I) which is the subject of the invention consists of two phases, namely: - Composition and manufacturing method The blocks are made from cement concrete composed of 70% fine element with a grain size of 0/3 and 30% aggregates with a grain size of 3/8. The concrete is dosed at 250 kg/m3. It is advisable to mold the blocks by press using an industrial brick layer. The finished product must give a very smooth facing after drying. Geo-concrete composed of 90% fine laterite and 10% cement for stabilization. The use of a mold inserted into a manual or electric press is recommended for the production of said blocks. - Assembly techniques The assembly method depends on the nature of the elements that make up the building to be constructed. <img file="OA21411A_A0001.tif"/> <img file="OA21411A_A0002.tif"/> <img file="OA21411A_A0003.tif"/> Plate I / XI

Description

The subject of the present invention is a new technical-ecological process for constructing buildings based on cement blocks and/or treated laterite.

We know that the construction of modern buildings in accordance with the rules of the art raises many challenges that must be resolved:

I Problems that the invention seeks to solve

The technical problems identified concern:

- the structural aspect of current constructions which do not present a technical guarantee due to the weak iron coatings of the buildings.

- The finish of the work which often leaves something to be desired and which is noted in the plastering, and the numerous repairs to be made for burrs in the concrete or mortars.

- The use of a lot of wood for the formwork with the problem of the impact on the forest environment.

- The excessively long construction period linked to formwork and finishing work.

₁₅ - Another no less technical problem can also be mentioned such as the high cost of the final construction.

State of the art

The investigation of sources of scientific and technical information in the field of the invention made it possible to identify and list the following supports.

2 ₀ A/ regarding publication:

- Books

- THE TECHNIQUE OF BUILDING ALL STATES (AUTHORS: DANIEL MONTHARRY AND MICHEL PATZER)

- CONSTRUCTION, HOW DOES IT WORK ? (AUTHORS: ALAIN BOUTEVEILLE AND 25 URSULA BOUTEVEILLE

- Journals

- REVIEWS OF THE BUILDING SECTOR IN IVORY COAST, final version APRIL 14, 2017 (AUTHOR: SILVIO GIROUD, FELIX BOILEVE, JACQUES OTRO)

- DP135_GUIDE OF GOOD MASONRY PRACTICES (CERIB Concrete expertise / FIB:

Concrete Industry Federation)

- Websites

- www.smart-systemes-beton.fr

- https://www.abc-maconnerie.com/technologie/

- https://www.youtube.com/watch?v=uBF-n8oF8gU

B/ Patent of invention

2979117

METHOD FOR MANUFACTURING A MOLDED CONCRETE BLOCK AND BLOCK THUS OBTAINED

FR-22.02.2013

IPC E04C %

Application No. 1157412

Depositor FABEMI GESTION

Inventor DUMONT PIERRE

Method for manufacturing a molded concrete masonry block (1) consisting in particular of injecting concrete inside a mold to obtain at least one block in the shape of a hollow parallelepiped comprising two facing walls (2) extending parallel to each other and connected by at least one spacer (3), characterized in that it consists of injecting into the mold, at least a first type of concrete (I) to produce the facing walls (2) and at least a second type of concrete (II) for making the spacers (3), the first type of concrete (I) having a thermal conductivity different from the thermal conductivity of the second type of concrete (II).

2420513

METHOD FOR MANUFACTURING CONCRETE BLOCKS HAVING A SURFACE ²⁰ CORRESPONDING TO THE NATURAL SURFACE OF SANDSTONE

FR-19.10.1979

CIB B28B 1/16

Application No. 7907723

Applicant KRONIMUS BETONSTE

INWERKInventor

The present invention relates to a method of manufacturing concrete blocks having a surface corresponding to the natural surface of sandstone.

Process characterized in that in a suitable mold, a layer of a mixture of concrete, quartz sand and a dye corresponding to the color of the desired sandstone surface is first introduced and then, applies to this mixture another mixture of concrete, sand of lesser quality, gravel or gravel, after which the contents of the mold are rammed and vibrated and after unmolding and setting, the pieces presenting the sandstone surface to be reproduced, through a shot blasting or sandblasting device.

The invention is more particularly adaptable to the manufacture of artificial stones. WO/2022/223845.

BUILDING BLOCK FOR MANUFACTURING A BUILDING AND METHOD FOR MANUFACTURING A BUILDINGWO - 10/27/2022

Cl B E04B 1/14

Application No. PCT/EP2022/060936

NOCA Applicant, Laurent

Inventor NOCA, Laurent

A building block (1) for manufacturing a building (2) has a floor (3) and walls (4). One of the walls (4) has a crossing reservation. The walls (4) are fixed to the floor (3) and to each other. The floor (3) has a support made of concrete-wood and it defines grooves. A metal frame formed by a plurality of metal rods is arranged in the grooves. At least first metal rods protrude from the ends of first grooves. Concrete fills the grooves and completely covers the metal frame and the support. The walls (4) are made of concrete-wood and define on their external wall a vertical groove extending over the height of the walls (4) and opening onto the first metal rods projecting from the support.

The analysis of the information taken from the state of the art media above did not make it possible to find solutions to the technical problems mentioned contrary to the object of the present invention a new technical-ecological process for building construction based on cement block and or treated laterite.

III Description

The new technical-ecological process for building construction based on cement or laterite blocks (Plate I) treated as the subject of the invention consists of two phases, namely: 1) Composition and manufacturing method

The blocks are made based on:

❖ Cement concrete composed of 70% fine element with a grain size of 0/3 and 30% aggregates with a grain size of 3/8. The concrete is dosed at 250 kg/m3. It is recommended to mold the blocks by press using an industrial brick laying machine. The finished product should give a very smooth surface after drying.

❖ Geo concrete composed of 90% fine laterite and 10% cement for stabilization.

The use of a mold introduced into a manual or electric press is recommended for the production of said blocks.

2) ASSEMBLY TECHNIQUES

The assembly method depends on the nature of the elements that make up the building to be constructed.

2.1 ASSEMBLY OF BLOCKS FOR A CONTINUOUS WALL (Plate II)

BRS blocks (standard infill block) are used for assembling continuous walls. They are arranged lengthwise in a staggered pattern.

The ends forming the semi-circles are glued against each other forming a cylindrical test piece which will be filled with concrete or slightly fluid mortar to ensure the stability of the wall.

2.2 ASSEMBLY OF BLOCKS FOR A CORNER WALL (Plate III)

The corner wall assembly is made up of a panel block (BT) and a BRS block.

The solid part of the BT block is arranged in the first direction and the hollow part of the BRS block is arranged in the opposite direction abutting against the BT forming an angle of 90 degrees. The hollow part abutting against the BT will be filled with concrete or fluid mortar as a binder.

2.3 ASSEMBLY OF BLOCKS FOR A CROSS WALL (Plate IV)

There are two categories of cross walls

2.3.1 T-shaped cross wall

2.3.2 Cross wall

The T-shaped cross walls are made by BT blocks and BRS blocks.

In this first case, the solid parts of the BT blocks are visible and the hollow parts of the BRS blocks abut against a part of the BT block in the opposite direction forming an angle of 90 degrees.

The hollow part abutting against the BT will be filled with concrete or fluid mortar. In the second case (cross wall), only BRS blocks are used.

A row of BRS blocks is arranged in the first direction and a second row in the other direction forming a cross. The hollow parts of the BRS are butted against the solid parts in accordance with the attached board.

2.4 ASSEMBLY OF BLOCKS FOR A CORNER POST (Plate V)

Mounting the corner posts requires the use of End Blocks, Standard x Post Blocks (BPS) and Standard Filler Blocks (BRS) as per the images below.

The BPS block is placed first to frame the post reinforcements, the open part of the PBS is directed outwards and the closed part is directed in alignment with the continuous wall.

The open part of the BPS is closed by the long length of the about block (BA) and the short length of the BA is directed in the other alignment of the wall and the whole forms a right corner wall.

The hollow parts are always closed with concrete or fluid mortar.

The same operations are repeated upwards by arranging the blocks in a staggered pattern.

2.5 ASSEMBLY OF BLOCKS FOR A POSTS IN LINE WITH THE WALL (Plate VI)

Mounting the blocks for the posts in alignment with the walls requires the use of BRS blocks and BPS blocks.

In alignment with the wall, we first position the BPS to frame the post reinforcements. Then we place the BR S blocks on either side forming a straight line.

The hollow parts are always closed with concrete or fluid mortar.

The same operations are repeated upwards by arranging the blocks in a staggered pattern.

2.6 ASSEMBLY OF BLOCKS FOR A POSTS IN THE CROSSING OF WALLS (Plate VII)

The assembly technique is the same as the assembly technique in paragraph 2.4

2.7 ASSEMBLY OF BLOCKS FOR AN INSULATED POST (Plate VIII)

Insulated posts are mounted from BPI blocks (INSULATED POST BLOCK)

2o BPI blocks are made up of two parts (a closed part and an open part e) To mount an insulated post; we join the two open parts to cover the reinforcements and we overlap them in the same way up to the height of the post.

As the two opposing blocks are placed on top of each other, we take care to fill the sealing holes (located in the closed part of the blocks) with concrete.

After these operations, the concrete is introduced into the formed column. For reasons of stability of the whole, it is recommended to pour the posts in two phases with an interval of 3 hours in order to avoid the phenomena of resumption of concreting. A stability rod can also be used to stabilize the blocks.

2.8 RESERVATION OF DOORS AND WINDOWS (Plate IX)

The painting blocks are used especially for the construction of opening paintings (windows, doors, etc.) in order to avoid any subsequent finishing work. They are composed of two parts (a circular part and a flat part)

During the assembly of the walls in an alignment where there will be a bay, it is recommended to first lay the LV blocks on either side, the flat part is placed at the edge of the bays and the hollow part is placed in the direction of the alignment of the continuous wall.

2.9 ASSEMBLY OF BLOCKS FOR A PERIPHERAL BEAM, CROSSED BEAM AND LINTEL (Plate X)

The peripheral beams, cross beams and lintels are mounted by the 5 horizontal formwork blocks I (BCH). The BCHs are placed directly on the last rows of BRS blocks.

They are arranged against each other in the longitudinal direction without providing a joint between them.

After longitudinal installation, the lower internal part of the BCH has openings which will be through the concrete to ensure the stability of said blocks. After the internal sealing, the ₁₀ reinforcements are placed inside and the concrete is poured. Which will give a double coating to the reinforcement

NB: the height of the BCH of the peripheral beams will be supplemented by a metal formwork (reusable several times) for the formwork of the thickness of the slab.

ASSEMBLY OF BLOCKS FOR THE CORNERS OF THE BEAMS (Plate XI)

In the right angles of the beams there are generally posts and the BCH blocks are used to cover the reinforcements of said posts.

View the modeling of BCH. You must cut a side (according to the orientation of the angle) of two blocks and place one in the direction of the current wall and the other in the direction of the other forming an angle of 90 degrees.

The parts where the wings are cut must join at 90 degrees at an interior angle and the 20 uncut wings will also join at an exterior 90 degree.

Claims (2)

1. New technical-ecological process for building construction based on cement blocks and or treated laterite, characterized in that the process is based on a method of manufacturing and assembling blocks made of cement or worked laterite. 2. New technical-ecological process for building construction according to claim 1, characterized in that the blocks are manufactured based on: - cement concrete composed of 70% of fine element of particle size 0/3 and 30% of granulates of particle size 3/8, the concrete is dosed at 250 kg/m ³ , said blocks 10 are molded by press using an industrial brick layer, the finished product has a very smooth facing after drying, - geo concrete composed of 90% fine laterite and 10% cement for stabilization, the use of a mold introduced into a manual or electric press is recommended for the production of said blocks. 15 3. New technical-ecological process for building construction according to claim 2, characterized in that the blocks are assembled in a specific manner depending on the elements of the building under construction.