Thursday 10 July 2014

How to Use Curing Compounds for Curing Pavements and Bridge Decks

Curing Compound on Concrete Surface
As per the expert's researches, sustainability becomes a major issue in recent time. It is important to develop such things which can accomplish present needs but can’t destroy the possibilities of future peoples. Like in terms of natural resources mainly it is important to either recycle and use things or make things in such a way that they can be easily use from you and to future generation as well. In construction trends are become important nowadays but most important thing in any construction is the strength and durability of structure which decides it life. Making such infrastructure which have strong base and can stand properly for decade’s is the necessity according to today’s scenario. For making such buildings curing plays an important or we can say most important role in it. It is so because if the base is cured well it can easily stand for years. 

Few structures like dams or canals or highways and airports, bridges are such places which if build properly can stand for decades without any problem all what require is to follow a proper construction process which includes right and best quality material, high technologies and perfect choice of chemicals with all this you can make structures which can stand for years. Making such structures is the need of today because all the natural resources are being disappeared quickly what if we left nothing for the future generation. Because of this experts suggest to make things in such a strong way that re construction will not be require for decades only renovation and touch up and time to time maintenance will keep the structure strong and stable for long time.  

As taking the above scenario it becomes more important to cure pavements and bridge decks they require more care and consideration and require different curing as per the structure. Both bridge decks and pavements requirements differ.

The workability of curing compound can be effected directly by the temperature either it rises up or going down both make an impact on the application of curing and its results same as the sir humid moisture, heat and dust also make an impact of results of curing. It has been observed that the places near sea gives not perfect result while using curing compound because the air contain a lot of humid in it which effects the working procedure of chemical. Same as with the places where temperature is low or near to freezing points are also not suitable place to use curing compounds. For using such chemicals it is necessary that the temperature should be maintained in a proper way so that it can give best results on concrete surface.

Using such chemicals can shape up your structure in a better way and additionally provides long life and durability to it as well   

Thursday 3 July 2014

A Step Ahead From Traditional Curing, Curing Compound

Spreading Curing Compound
Curing, in construction it means a layer of anything which can maintain the surface temperature an protect in at least for few time period from the adverse effects of atmosphere like sunlight, dust heat, moisture, humility etc it is so because on fresh concrete what requires is the inside moisture and to maintain it curing is required. Just because natural resources are not easily available and now they are hard to access mostly preferred process for curing is through chemicals. As compared to water which can't be movable from place to place nee labors and so many extra efforts plus if you are onto water curing it is necessary to keep on doing the same for about a month to get exact results which is next to impossible for big projects. On other side the most preferable option has so many benefits which make it better from the tradition water curing like it can be remote to various laces according to need, time limit for drying up completely will be around two or three days which is far less to traditional one, easy to apply and available easily from all these benefits it has a extra ordinary feature and that is curing compounds are eco friendly they do not cause any kind of side effects to atmosphere.
  
The necessity of curing is because if the surfaces does not cure properly an lost their inside moisture than it becomes bit difficult for the concrete layer to survive as it leads to cracks and loose its strength permanently it effects the durability of place.

The role of curing includes forming a thin layer on the surfaces of concrete so it can be stay away from direct sunlight and other impurities which can cause moisture loss next is curing help the concrete layer to maintain its moisture inside by locking it through the above layer of curing compound. It is important to apply the chemical as properly as you can and it is better if the application repeat twice just to ensure that no space is left if any place left uncovered it will become the reason of crack age and from that small crack it will damage a huge area of concrete so it better to ensure that all parts are cover well with the chemical coating also it should be taken in mind that after curing do not leave the place for use as the chemical needs at least two to three hours to wet completely and the place will be open to use only after three days from the day of application applied. One thing which should always be taken in mind while using curing chemicals that it takes at least 6 months to remove that layer from surface before that you can't apply any kind of pain or you can't allow tiling on that surfaces this is the reason it is not recommended for small construction these chemicals are preferred only for projects such as dam, bridges, roads etc.

While as some extents it is necessary to apply chemicals in construction it is highly suggested to gain complete knowledge of it before use. It is very important to use safety tools like gloves and other covering to make sure that chemical stay away from the reach from the body of labor. Always prefer to use spaying machine while applying chemicals on surfaces which helps to spread evenly and properly all around the places and give perfect results. Curing compound is very easy to use and give good results as compared to other techniques of curing.  




Tuesday 1 July 2014

Major Steps and Precautions of Using Shuttering or Formwork

shuttering or formwork
There is always some pros and cons of everything so as the formwork and shuttering have. The main usage of both of them is providing enough strength to the concrete only the wet one which is placed on vertical surfaces just till the time when it gains particular amount of strength. It is necessary that these two have as much strong that they can easily bear the load of concrete mix as when the concrete is mixes with water which results it becomes high weighted. It is mandatory that these applications should be water tight if in case water leakage from concrete has been allowed through shuttering it will leads the concrete to weak and damage it which results it have very low life which affects the whole infrastructure. Usage of shuttering is quite easy on the side and it can be very firmly removed from the concrete if mould release agents are applied properly on it.   

Few steps of precautions basically for RCC beams, slabs and vertical supports:
  • Wooden pillar which are used for the support should be not more than 6'' Dia and all of them should have same size and it is necessary that all are free from joints.
  • Never make required height by applying brick in the base of wood, usage of brick is allow up to three not more than that.
  • Cross bracing should do which gives better support to slabs and to beams as well.
  • The batten of wood which is supposed to be used below plate the size of it should be 5'' of height not more than that.
Precautions for beams & slabs and Beams:
  • The shuttering should be used of steel instead of bricks or plywood
  • It is necessary to keep close eye that the formwork is water tight or not.
  • Make sure that the shuttering is removed only after 28 days
  • It is necessary to watch occasionally that the concrete gain particular strength by time.
Recommended removal period of shuttering:
  • If slab is indoor than 7 days should be minimum.
  • For walls, beams, foundations and columns 48 hours are minimum.
  • If the arches are above 4.5 meter and falls between 6 meter spams 14 days should be minimum.
  • If the aches of beams are in between 6 to 9 meter it will take 21 days to remove shuttering.
  • Beams above 9 meter take at least 28 days for removing formwork.
These are the few basics which should always be taken in mind while using shuttering or any kind of formwork. Always make sure that you prefer to use steel shuttering instead of any other kind which will give you water tight ability which ensure the poured mixtures moisture inside it which will help it to retain good quality of strength.