When it comes to road laying concrete in Glasgow, there are two basic types. These are Dense-graded and Cold mix. Let’s look at each type.
How do they differ? Let’s start by talking about Cold mix. During this process, the road is divided into bays of odd and even sizes. These bays provide extra working space for the road construction team. Also, joints are more easily constructed. Moreover, the road is kept at a suitable width for the construction process. Let’s dive deeper into what makes these concrete road lay options unique.
Cold mix
When it comes to cold mix asphalt, there are some things you need to keep in mind. First, it should be laid over a properly prepared base. This means that the road should be free of drainage or base defects. If the base has any defects, it is best to repair them before applying cold lay asphalt. You should also follow local safety guidelines and ensure that you wear proper PPE while working with cold mix.
Cold mix asphalt pavement recycling technology is a proven technology. However, there are still many things to know before implementing this technology on high traffic roads. For example, you need to evaluate the creep and fatigue endurance of the cold mix asphalt in high traffic areas, as well as how long the mix will last. You will also need to make sure that the cold mix is not too fluid, as this could cause it to tear.
Cold mix asphalt is an excellent alternative to WMA and HMA in terms of energy efficiency and the environment. Its low production temperature saves on fossil fuels and allows it to be used in remote areas and for initial construction. It can also be recycled, which is great news for both the environment and your budget.
Once the mixture is ready, you can prepare the area by removing raised pavement markers and loose impediments. You should also clear any vegetation from the edges of the pavement. Then, you can place the mixture, which is usually below 175 degrees Fahrenheit. You should ensure that it is sufficiently mixed to give you a smooth finish surface with uniform appearance and texture. You should also make sure that the longitudinal joints between successive courses of mixture are offset by six inches and correspond to the lane lines. Lastly, you should ensure that the surface drains.
Dense-graded mix
A dense-graded mix is a mix that is made up of aggregates that are continually graded to a maximum size of about 25 mm. They are laid down in thick layers and are less likely to move under heavy compaction energy. A medium to high-amplitude compactor is typically used to compact these mixes. Other types of compactors are available, including pneumatic compactors and vibratory compactors.
Another type of mix is called an open-graded mix. The aggregate in an open-graded mix tends to be finer than the aggregate in dense-graded mix. This type of mix may have a steep slope or be flat. In such a case, the particles in the mix are more closely spaced. This type of mix is permeable to water and does not have the high density and hardness of the dense-graded mix.
When mixing an open-graded mix, it is important to maintain a certain minimum air-void percentage. This will minimize the possibility of hardening of the asphalt binder. Additionally, the mix must have sufficient asphalt cement to minimize the risk of hardening and aging.
The most common type of gap-graded bituminous mix is Stone Matrix Asphalt. These mixes rely on stone to stone contact and have good rut-resistant properties. These mixtures can withstand high traffic, but the high-pressure tires may cause overloading conditions.
