Coopération OIT/MINTP

Launching of the production of Pavement test for Projet Himo In Bamenda

The manufacturing work on the test pavement blocks began with site clearance since the production site was in the bush, this activity lasted for 2 days while awaiting the supply of materials for pavement production , on the third day production started as equipments such as the concrete mixer, generators vibrating tables were installed and tested.

Communiqué de presse | 14 juin 2023

Objective of the activity:
  • Main objective:
The main objective of this activity is to familiarize young people with pavement production tools. Also, obtain the blocks to perform the resistance and crushing tests.
  • Specific objectives:
(i) Train young people on the formulation of good quality concrete.
(ii) Teach young people to mold and unmold the cobblestones on the production site.
(iii) Learn to store by date of manufacture and count pavers in a secure place.
Preparation of Activities:
The manufacturing work on the test pavement blocks began with site clearance since the production site was in the bush, this activity lasted for 2 days while awaiting the supply of materials for pavement production, on the third day production started as equipments such as the concrete mixer, generators vibrating tables were installed and tested.
Subsequently, the sampling of materials (sand and gravel) was done on site by the geotechnician, then taken to the laboratory to obtain the appropriate resistance and concrete formulation.
Execution of the Activity:
The first day was marked by cleaning activity on site since the site had been left without use for a longtime, this activity took two days while awaiting the supply of materials for pavement test production, the third day actitivities were shy, a natural thing since among the young people, none had yet faced such a deployment for such an activity.
The project team started by presenting all the materials and materials used in the manufacture of the pavers, then a deep explanation of all the manufacturing processes of the pavers, namely:
batching: youths were given insitu training on the batching and mixing methods to be used two batch were tested that is sand (38% or 01wheelbarow), gravel 5/15 (62% or 1,5 wheelbarow), cement (01 bag of 50kg of 42,5R) and water (20 to 35 litres) , the second batch was sand (01wheelbarow), gravel 5/15 ( 1,5 wheelbarow) gravel 15/25(,5 wheelbarow ), cement (01 bag of 50kg of 42,5R) and water (20 to 35 litres) in other to obtain a good concrete formulation.
Oiling of molds: it consists of soaking motor oil mixed with diesel to oint the molds and their walls to allow removal from the mold with ease.
Vibration: The duration of vibration varies between 40s and 1min this is due to the power of the vibrating tables especially that after lubrication of its support elements, they emit very appreciable vibrating waves.
Demolding: It is a question of unloading the molds on the vibrating table and heading towards the appropriate place and fitted out for this purpose. Lay the pavers and wait a few minutes (20 to 30min) for the cement setting effect to start before unmolding since these are plastic moulds. NB: a mold must be able to undergo this action on average 12 times a day for an average production yield of 2400 pavement blocks per day.
Stockage : It consists of moving from the place of demolding to the storage area then watering. This task is done by dating the prefabricated elements.
Results obtained drom the workshop:
The planned work focused on the manufacture of test blocks in the workshop, with the aim of pre-training young people who will serve as guides and direct others on the production site.
To carry out this activity, the project team needed twenty seven (27) young people, i.e. 18 men and 09 women, distributed as follows:
● 18 men including 01 guard;
● 09 women including 01 nurse;
During this period, the project team carried out the preliminary work such as cleaining of the production site and roadside clearing alongside opening of earh drians entrance to the paver production site.
For ten (10) days of school production, the young people produced a total of 512 pavement block.