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Central de Betão

The document outlines the specifications for concrete supply and equipment for a project, including the installation of a batching plant with a capacity of 100m³/h, cement supply from Lafarge Zambia, and a reliable water source via a borehole. It details the concrete mix designs, including C16/20, C40/50, and C45/55, along with quality control measures such as on-site testing and monitoring of materials. An on-site laboratory will ensure compliance with project requirements and international standards through rigorous testing and documentation of results.

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David Ferreira
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12 views2 pages

Central de Betão

The document outlines the specifications for concrete supply and equipment for a project, including the installation of a batching plant with a capacity of 100m³/h, cement supply from Lafarge Zambia, and a reliable water source via a borehole. It details the concrete mix designs, including C16/20, C40/50, and C45/55, along with quality control measures such as on-site testing and monitoring of materials. An on-site laboratory will ensure compliance with project requirements and international standards through rigorous testing and documentation of results.

Uploaded by

David Ferreira
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Concrete Supply and Equipment Specifications

Concrete Production and Storage Facilities

To ensure a consistent and efficient supply of concrete for the project, a batching plant
with a production capacity of 100m³/h will be installed on-site. This plant will be
equipped with cement storage silos with a total capacity exceeding 150 tons. The
batching system will feature fully automated weighing of materials, with the cement
feeding system supplied by screw conveyors.

The aggregates will be stored adjacent to the batching plant, and loading will be carried
out using Dragline-type equipment. The aggregates will be sourced from a quarry to
be established in the project area or from existing operational quarries in the region. All
materials will undergo testing prior to use.

Cement Supply

The cement supply will be ensured by Lafarge Zambia or another supplier within the
country that meets the specifications required for the project. The cement to be used will
be CEM II 42.5R, meeting the required compressive strength and setting time
standards.

Water Supply

A borehole will be drilled to the necessary depth to ensure a reliable water supply for
the concrete production process.

Concrete Transport and Placement Equipment

For concrete transportation, the project will utilize:

 Three (3) transit mixers with a capacity of 6m³ each, operating on a permanent
basis.
 Additional transit mixers will be deployed as needed for larger concrete pours.
 A concrete pump truck will be available on-site to facilitate efficient concrete
placement.

Concrete Mix Designs

The concrete mixes to be used in the project include:

 C16/20:
o Cement: 300 kg/m³
o Water: 180 L/m³
o Sand: 750 kg/m³
o Coarse Aggregate: 1,050 kg/m³
o Water/Cement Ratio: 0.60
 C40/50:
o Cement: 400 kg/m³
o Water: 160 L/m³
o Sand: 680 kg/m³
o Coarse Aggregate: 1,100 kg/m³
o Water/Cement Ratio: 0.40
 C45/55:
o Cement: 420 kg/m³
o Water: 155 L/m³
o Sand: 670 kg/m³
o Coarse Aggregate: 1,120 kg/m³
o Water/Cement Ratio: 0.37

All concrete mixes will be designed and tested to comply with project specifications and
international standards, ensuring durability and structural integrity.

Quality Control and Testing

To guarantee the quality and performance of the concrete used in the project, we will
establish an on-site laboratory, which will be fully calibrated and licensed. This
laboratory will conduct rigorous testing on all materials and concrete mixes to ensure
compliance with project requirements and international standards.

Key quality control measures will include:

 Slump Tests to verify workability and consistency.


 Compressive Strength Tests at different curing ages (e.g., 7, 28 days).
 Aggregate Gradation Analysis to ensure proper particle size distribution.
 Water-Cement Ratio Monitoring for optimized durability.
 Temperature and Setting Time Assessments to track concrete behavior during
curing.

All test results will be documented and analyzed regularly to maintain high construction
quality and detect any necessary adjustments in mix designs or production processes.

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