After looking at FC studies for a year my idea what we need to do to make FC an outstanding construction building material is the following:
Use a density of 800 to 1000 Kg m3 as starting point (1000FC). Do all investigations of influences with this density.
- Set up a chart system that can compare the influences. Followed by a predictive theory
- Classify / identify the ingredients as we do with Portland cement. If we use Fly-ash, than this need to have a description / classification. Same with other ingredients such as Silica fume etc.
- Compare Foaming agent’s performance making FC
- Compare foaming methods and machines, and make 1000FC
- Influence of super-plasticizers on 1000FC using the top performing foaming agents
- Influence of fibers during 28 day curing on 1000FC.
- Influence of fibers on tensile strength after 28 day curing on 1000FC
- Investigate the cost effective use of additives and ingredients against the most important properties of 1000FC.
- Curing methodology
- Size of the FC pour (size of form-work) influence on durability / shrinking
Please let me know if you know of any research / studies in these fields
Recommendations for further research made by Hilal, Ameer Abdulrahman (2015) in:
Properties and microstructure of pre-formed foamed concretes.
Although the findings of this study in terms of strength considerations are encouraging for the potential of using modified foamed concrete with additives in semi-structural and structural applications, there is still a need to investigate and evaluate the following points:
- The potential of using foamed concrete in reinforced structural elements such as beams, columns, slabs and reinforced walls needs to be experimentally examined and evaluated using, for example, a design code for reinforced Autoclaved Aerated Concrete which is recommended by the two RILEM Technical Committees, 51-ALC and 78-MCA, (Aroni, 1993).
- Evaluate use of foamed concrete as load bearing masonry by adopting a structural design of unreinforced foamed concrete block masonry in buildings using a design code for unreinforced Autoclaved Aerated Concrete recommended by the two RILEM Technical Committees, 51-ALC and 78-MCA, (Aroni, 1993) as well as British standards BS EN 1052-1 (1999) [Methods of test for masonry] and BS 5628-1 (2005) [Code of practice for the use of masonry- Part 1: Structural use of unreinforced masonry].
- Conduct a cost analysis study on the production process as well as a long term cost study of using this lightweight material in construction projects.
- Investigate the effect of additives on the carbonation and drying shrinkage of foamed concrete.
- Sound insulation, noise reduction and fire resistance need to be investigated.
- Investigate the effect of lightweight aggregate size and content on the properties of foamed concrete.
- To improve the ductility of modified foamed concrete with additives, the effect of inclusion of fibers needs to be investigated