| Unit Code |
Unit Title |
| MAS-04 |
Prepare Mortar and Concrete Mixes |
Nominal Hours: 25
Unit Descriptor:
Covers selection, proportioning, mixing, and testing of mortar and concrete for masonry work.
Elements | Performance Criteria
| Elements |
Performance Criteria |
| 1. Select materials |
1.1 Identify types and grades of cement, sand, aggregates.
1.2 Select additives as required.
1.3 Ensure materials are clean and suitable. |
| 2. Proportion and mix |
2.1 Measure materials accurately.
2.2 Mix mortar and concrete to specified consistency.
2.3 Adjust mix as needed for workability. |
| 3. Test and handle mixes |
3.1 Perform slump or consistency tests.
3.2 Transport and store mixes appropriately.
3.3 Clean mixing equipment after use. |
Range of Variables
| Variables |
Range |
| Materials |
Cement, lime, sand, aggregates, water, plasticizers, retarders. |
| Mix types |
Mortar (various ratios), concrete (various grades), specialty mixes. |
| Mixing methods |
Manual, mechanical, batching by volume or weight. |
Evidence Guide
| Area |
Details |
| 1. Critical aspects of competency |
Prepares mortar and concrete mixes to specification and tests consistency. |
| 2. Underpinning knowledge |
Material properties, mix ratios, mixing techniques, testing methods. |
| 3. Underpinning Skills |
Material selection, measuring, mixing, testing, cleaning. |
| 4. Underpinning attitudes |
Accuracy, quality focus, cleanliness, responsibility. |
| 5. Resource Implications |
Mixing equipment, materials, test tools. |
| 6. Methods of Assessment |
Practical demonstration, questioning, product inspection, supervisor feedback. |
| 7. Context of Assessment |
Real/simulated site with mixing and testing activities. |
Foundation skills
| Skills |
DESCRIPTION |
| Numeracy |
Measure materials and calculate mix ratios. |
| Problem Solving |
Adjust mix for workability or site conditions. |
| Planning/Organizing |
Sequence mixing and testing tasks. |
Target Audience
| Target Audience |
Description |
| Masonry apprentices, workers |
Individuals preparing mortar and concrete for masonry work. |
Recognition of Prior Learning (RPL)
Pre-Requisit