What is BS EN 1097-4 - Determination of the voids of dry compacted filler about?
BS EN 1097 is a European Standard on tests for mechanical and physical properties of aggregates. The main aim of the BS EN 1097 series is to provide the best industry guidance to ensure construction materials contribute to the structural integrity of civil engineering works.
BS EN 1097-4 is the fourth part of the BS EN 1097 series that describes the reference method used for type testing and in cases of dispute, the determination of the voids of dry compacted filler by means of a Rigden apparatus.
For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established.
The test is applicable to natural and manufactured fillers. It is used, for example, to determine their bitumen carrying capacity.
Who is BS EN 1097-4 - Determination of the voids of dry compacted filler for?
BS EN 1097-4 on determination of the voids of dry compacted filler is useful for:
- Construction materials manufacturers and suppliers
- Manufacturers of bituminous binder and aggregates
- Mineral materials and products manufacturers
- Construction industry
- Civil engineers
- Contractors
- Cement production companies
- Quality control and testing authorities
Why should you use BS EN 1097-4 - Determination of the voids of dry compacted filler ?
The void space between aggregate particles of a compacted mix, also referred to as VMA, is used to indicate the available space for bitumen to adequately coat each aggregate particle. Given that a higher VMA requires more bitumen to reduce the air voids to the desired level, the amount of asphalt in excess of the volume of voids in the compacted filler is used by the Rigden apparatus as a measure of the stiffness of the filler-asphalt mix.
In this regard, BS EN 1097-4 provides the requirements for apparatus, reagents, test preparation and test procedure to evaluate voids of dry compacted aggregate filler.
As a result, if you are a manufacturer of aggregates, testing in compliance with BS EN 1097-4 can demonstrate the performance and credibility of your products. By determining the voids of dry compacted filler, you ultimately assess whether your construction materials are fit for use. Thus, incidents of poor compaction and asphalt bleeding can be avoided. Moreover, this assessment can also play a significant role in improving the design mix for optimal concrete performance.
