Achievements in Hardware Technology: Nigerian Building and Road Research Institute (NBRRI)
  Untitled Document
 ANNOUNCEMENT
NBRRI Stakeholders meeting
holds from 24-25 May, 2011 at Sheraton Hotel, Abuja
   
Achievements:
 
  Achievements in Hardware Technology

  Brickmaking Machine  

NBRRI in its early years, developed a mechanical press for the production of stabilized and unstabilized bricks and blocks from locally abundant clay deposits in Nigeria. The machine imparts a compressive effort of not less than 3/Nmm2 on 4% cement-stabilized laterite blocks to achieve a strength of not less than 1.6 N/mm2 which is suitable and adequate for cost-effective bungalows. The machine is light-weight and can readily be transported and used at sites especially in rural areas. The operation is simple and requires a three-man operational team. The production capacity is 600 to 700 bricks per an eight hour working day.
Two bricks are produced in one operation and the standard size of the product is 190 x 140 x 100 (mm) size.

Manual  Brick Making Machine

During the production and use of cement-stabilized bricks and blocks, great economy is achieved because less cement than would normally be required in sandcrete blocks is used.However, in the production of burnt bricks and blocks, the machine produces unstabilized bricks which are then burnt in clamp kilns. An appropriate level of technology is applied in the construction of clamp kilns using unskilled and semi-skilled labour with the advantage of utilizing communal self help spirit of the rural areas.
 
   Fibre Concrete Roofing Tiles (Mador Tiles)  

An appropriate technology for producing durable and cost-effective roofing tiles at any required site was developed at NBRRI. For this, a vibrating table was designed and fabricated from local resources. The Fibre Concrete Roofing (FCR) tiles developed and produced by NBRRI are referred to as Mador-tiles. They are produced from coir fibre (from coconut husk), cement and sand in suitable combination. Rama fibre which is abundantly available in Northern Nigeria and washed palm fibre abundantly available in Eastern Nigeria are equally suitable for making fibre concrete roofing tiles.
 
 

NBRRI Fibre Concrete Roofing Tile Technology

  

WAZOBIA House Built with Cement- Stabilized Bricks and FCR (Mador) Tiles

These Fibre Concrete Roofing (FCR) tiles are durable, water resistant, cost-effective and are suitable alternatives to the now expensive conventional galvanized iron, asbestos and aluminum roofing sheets. The production capacity in an 8-hour working day is 150-200 roofing tiles. Efforts have been initiated to improve on the performance of the machine especially in the area of automation.
 

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  Electrohydraulic Brickmaking Machine  

With the desire to improve on and mechanize the brick production process, NBRRI developed an electrohydraulic brickmaking machine which produces two bricks in one single operation. Due to its semi-automatic nature, the machine allows for mass production of bricks to meet the high demand required on sites over short periods. This is in  addition to ensuring

consistency in the size and quality of the building bricks produced. The prototype machine has been fabricated and has a production capacity of 1,000 bricks in an 8-hour working day. The machine has the advantage of reducing the druggery of human effort exerted in the use of the manual brickmaking machine during brick production and guarantee high quality bricks.

Electrohydraulic Brickmaking Machine
 
     
 
   
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