Production of bio ash concrete
UNICON will be responsible for this task.
The existing information at UNICON in terms of batch information and associated concrete test results from the past years delivery of bio ash concrete will be compiled. The data will be analysed and reported.
UNICON will carry out pre-testing of concrete mixtures for environmental classes P, M, A, and E according to EN 206 and DS 2426.
Following the successful pre-testing the respective bio ash concrete mixtures will be produced and documented per 25 m3 of concrete produced. The test program will comprise the following tests:
- Slump – after mixing and at delivery (EN 12350-2)
- Density (EN 12350-6)
- Air content (EN 12350-7)
- Water separation (DS 423.18)
- Compressive strength (EN 12390-1,2,3,4 – the strength will be measured after 2, 7, 28, 56 days)
The data compiled during pre-testing and every day production will be analysed and reported in cooperation between UNICON and DTI.
Progress indicators – 1) Pre-testing of class P and M bio ash concrete performed, 2) pre-testing of class A and E bio ash concrete performed, 3) 5000 m3 of bio ash concrete produced in class P.
Expected Results – The possibility of full-scale production of bio ah concrete in all environmental classes is established through successful pre-testing. In the daily production of ready mixed concrete the variations in the properties of the fresh and hardened bio ash concrete is documented. It is expected that the variations are statistically identical to the variations of traditional concrete.
Constraints – If successful pre-testing according to EN and DS standards is not obtained every day production of bio ash concrete cannot obviously not commence. The existing research does not indicate that insurmountable problems should be encountered with respect to obtaining pre-test results conforming to standards.