Roadbond is a chemical soil stabiliser and a compaction aid. When mixed with soils, it has the effect of reducing shrink/swell activity of expansive clays and enhances compaction of all types of construction materials.
Today, almost world-wide, there is a general shortfall in resources required to provide appropriate road networks. This is mostly the result of cuts in government funding of roads as other facilities gain higher priorities e.g. housing, schools and hospitals. At the same time, the cost of obtaining good road construction materials is increasing and these materials are becoming scarcer as resources are being depleted, necessitating long haul distances. This situation is forcing a re-evaluation of conventional road designs, material standards and construction methods.
Faced with these problems, engineers are having to specify the use of sub-standard materials on many roads. This, however, leads to additional problems, particularly on earth and gravel roads, such as:
- Safety, health and environmental problems related to dust or loose surface material;
- Maintenance problems related to surface durability under wet and dry conditions;
- Level of service problems related to general surface deterioration such as rutting and pot holing, caused by poor materials, high traffic volumes and heavy loads.
Frequent maintenance by experienced and good operators can limit the latter problem to a significant extent but is costly and disruptive to traffic flow and has serious road-safety implications.
In an endeavour to overcome some of the problems, road engineers internationally, have over the past few years embarked on a series of trial evaluations using various chemical additives in gravel wearing courses and pavement layers. These evaluations have fallen into the following groups:
- The use of synthetic additives to modify existing gravel wearing courses and in situ and local materials to improve the durability and load carrying capacity of the materials.
- The use of synthetic additives under conventional thin bituminous surfacings to improve sub-standard pavement layers with a resultant cost benefit.
Roadbond is such an additive which has been used in several countries to facilitate the utilisation of marginal quality construction materials for road pavement layers. Roadbond allows the use of appropriate in situ or local materials to provide a pavement layer with numerous advantages.
What distinguishes Roadbond in the marketplace?
- Roadbond has successfully been in use since 1994.
- 1992 and 1993 were used for research and development of RBX25 at a University in the United Kingdom, two South African Universities as well as in conjunction with the South African Department of Transport from KwaZulu Natal, until we achieved the best formula for a wide range of soils.
- Roadbond has been used to construct thousands of kilometers of road with outstanding results.
- Roadbond is supplied in a super concentrated form namely – RBX25.
- 25 litres of RBX25 can be diluted with water to produce 625 litres of commercial strength Roadbond. This mixing process can be safely and successfully completed on site.
- The 25 litre drums provide ease of handling, storage and noteworthy reduction in freight costs.
- Roadbond has indefinite shelf life – refer to health & safety page.
- Roadbond is extremely safe to work with – refer to Health and Safety Data Sheet to support this statement.
- Roadbond makes it possible to build a serviced road at less cost than that of an untreated gravel road utilising traditional construction methods.
- Roadbond is only used on site after correct and comprehensive laboratory procedures have been carried out to determine dosage for optimum results in treating the soil being used for the road. Many other products use an identical dose per cubic metre irrelevant of soil type, often resulting in higher cost.
- Our company uses independent consultants to supervise laboratory testing and road construction using Roadbond. These consultants have their professional reputation to protect and will not therefore make any false claims regarding our product.
- Our company does not become involved in “buying orders”. The performance of the product wholly speaks for itself and the impeccable reputation of the company is of paramount importance to the proprietors, associates, distributors and consulting engineers.
- In our experience Roadbond uses up to half the quantity of other products with which we are aware of to stabilise the same amount of soil. The Roadbond soil evaluation and assessment procedures to determine the optimum dosage are scientific and exact.
- Roadbond application does not require any specialised equipment. Roadbond can be applied using a conventional water-cart.
- Roadbond has been tested on a variety of construction materials and test results have shown that it works effectively on all types of materials ranging from non-plastic to highly plastic materials.
- Roadbond does not clog or damage any of the expensive road construction machinery found on site.
- Roadbond is biodegradable for use in ponds and other water storage facilities.
- Roadbond is environmentally friendly and is not detrimental to ground or sub-surface water. Roadbond has been shown to encourage the growth of grass on cut and fill banks.
- Roadbond has been used in a wide variety of climatic conditions in order to test its performance under extremes of temperature with outstanding results.
- Construction materials treated with Roadbond can be re-worked without the need to add more Roadbond.
- Roadbond reduces overall maintenance costs by 20 to 25 percent.