PLACING OF CONCRETE AND ITS MIXING

There are some skills that are need to be gained by site engineer, contractor and mistry as well as the site supervisor. They must be aware and conquer about the cure of concrete. There are some certain issues which are to be faced during placing of concrete.

(a) First of all the reinforcement should be checked whether the nominal cover or clear cover is given or not. Otherwise this will lead to the rusting of reinforcement which will caused due to its atmospheric effect when water or muddy soil will enter into the pores or voids of the concrete.

(b) The next typical thing is that the shuttering should be checked whether it is straight or not or according to the drawing is given or not, max. end to end distance is provided or not. Because after pouring the concrete it will not be possible to adjust or remake it. Therefore all things should be checked before placing of concrete.

(c) The most important thing is that, the vibrator must be their at the site. Without vibrator the placing of concrete is of no use. It will lead to honeycomb like structures and failure of concrete. Therefore after placing of concrete upto the brim level the vibrator must be used.

HOW TO MIX THE CONCRETE

One of the most important thing is that the workers dosen't know how to mix the concrete. They think that they are the most experts in mixing the concrete but can't identify the ratio in what order to mix. For PCC the ratio is 1:3:6 and for RCC the ratio is 1:1.5:3 and above this is also given but the given ratio is for building works or dam works.

But before doing any concreting work first of all cube test should be done. It should be in the ratio 1:1.5:3. It is placed in the cube mould and after that it is taken in the lab for testing.

Moreover the further placing of concrete is to be done in a systematic manner or lucent manner. Otherwise there will be faulty in any case of concreting work. Be careful with mistry, contractor and supervisor. They think themselves to be the best because of experience in all this type of works. But the main technical term of this work is dosen't known by them. Neither they know the use of vibrator nor the mixing of aggregates as per w/c ratio.

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MACHINES USED AT CONSTRUCTION SITES

The most commonly used machine at any construction site is JCB where it's technical name is Backhoe. It is the most common and widely used machine in any construction project whether its big or small project. It becomes easier and makes the work faster for the companies at any time of interval. All other machines such as Transit Mixer, Concrete Mixer, Roller etc are also used in any kind of road project or building project. Transit Mixer is used for large large building projects, bridge projects, some kind of road projects etc. whereas concrete mixer is for small building projects. Roller is used for road project and bridge project for its elevation. For any building project the most commonly used machines are concrete mixer, transit mixer, concrete pump, bar bending machine, needle vibrator, water pump and many more. All these machinery works make the work easier and faster. Otherwise if the work is done with labourers it will take more time and less efficient for the work.

Excavation for RE Wall.

So, hey guys! How are you? You might have read my previous blogs about panel casting and panel placing . Now it's time to learn about panel erection or what to do after 3-4 months of casting the panels. So the first step is about excavation for RE Wall. Then only you can erect the panels. So let us learn about this excavation part. You all know excavation work is done by JCB or Falkland. To excavate the soil and then carry it to the other dumped areas. But before excavation you all know, to marked the center line as well as the outer line also so that the area doesn't excavate much as per the requirement. For excavation just you need to take 500mm more, then that of the given drawing. Doing this excavation is easy. But what to do if it's flooded with rain water/ or water coming from other sources. Definitely your answer will be to do dewatering work with a water pump. That's fine. But do this dewatering work with almost by fixing 3-4 water pumps. So that it soaks mo

Machineries used in RE Wall

So far you all have known that, how RE Wall construction is done and how they are installed. You might have known from the previous blogs. The panels, how are they casted and how the erection work is done. If you have not seen my previous blogs then you will understand nothing. First go and understand these articles by clicking on the link and then only you will understand here briefly. So, the type of machineries used in RE Walls are as follows :- Hydra Dumper Grader Roller Falkland JCB Vibrator HYDRA Hydra is the most important machinery used in RE Wall. Without hydra, nothing work is possible to do. Because to lift the panels, you will need crane or hydra. After casting for demolding the panels, you will need hydra only and also for panel erection, hydra is only the main aim to lift the panels. So HYDRA is the heart of RE Wall. Without this machine you will have to wait for somedays for work. DUMPER Dumper is used for transportation, to bring the soil. aggregates etc. f

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