While placing a new concrete slab, making perfect cuts on the concrete without unwanted cracks is a daunting task. If you are new to this concrete placement field then, you have to understand specific key areas to avoid such types of issues. Saw cuts method is also famous as diamond concrete drilling technologies. Saw Cuts technique is one of the perfect and cost-effective methods which is created to control and give perfect joints in the concrete. Saw cuts operators prefer this technique to control the cracks in concrete slabs and to avoid the possibility of shrinkage.
Saw cuts activities can be done before the internal cracks begin and when they have enough strength to bear that force. An operator needs to predetermine the perfect spacing before starts cutting the slab. They need to focus and take care of many important factors to make saw cuts perfect and accurate. These cuts directly-indirectly affect the designs & types of admixtures of concretes.
The Right Time to Place Saw Cuts on Concrete
Proper and effective determination is necessary to place saw cuts on concretes, it is totally dependent on different factors, conditions, and requirements of the projects. Of an operator decide to cut the concrete slab, the weather is the major factor, they need to determine. Types and hardness of concretes also play a vital role in this decision when to cut the slab. If the concrete has not enough strength and you start cutting it too early then it may start ravel. The entire position of concrete looks messy which often causes uncontrollable cracking on its entire areas.
You cannot start running the saw blades on concretes anytime, whether you are working in hot or cold weather. If you are working in cold weather, still you have to wait at least 12 hours before start cutting the slab. In the situation where you are working in hot weather, you can start cutting the concrete around about 5 hours after it is poured. You can also make a trial cut in order to check the condition of concrete if you don’t know the exact time to use a saw blade to cut it. In a situation where you don’t observe any raveling, then, in that case, you can cut the concrete easily.
Determination of Right Areas to Saw Cut Concrete
Effective and proper understanding of concrete cut areas is necessary. Operators need to determine where to cut the slab. The right and accurate positions of concretes should help them to determine the center of the column areas. The space of joints depending on the thickness of the slab which should be at least 24 to 36 times thickness. If the shrinkage rates of slabs are high, then cut spacing should be reduced accordingly.
Other factors affecting the determination of cut areas are the following:
- Form square structure of concrete
- Making imbalance saw cuts continuously
- Wrong measurement of the thickness of the slab.
- Selection of an area without continuous steel procedure and reinforcement from one concrete to another.
Tactics to Place Saw Cuts in Concrete
Making a proper analysis of the concrete thickness and properties is very essential. Knowledge of the base types, width, length, and height are major properties that are mandatory to be understood before making cuts in the concrete. The proper measurement from edges of slabs will help to make sure that whether the blade would reach the desired depth of the concrete or not.
Here are a few considerable points to consider while using the saw-cut blade:
- Try to avoid twisting the saw blade.
- Try not to spin the blade cut unless it will reduce the wear.
- If concrete contains heavy rebar then the blade should be sharpened with the soft metal bongs for an effective result.
Making perfect and accurate saw cuts permit you to reduce the possibility of cracking that might be formed in the situation of concrete shrinkage.
Understanding of all about saw cuts in concrete can be proved as a helpful guide that helps you to observe and control the whole concrete saw cuts process.