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Vopaa Gatineau

drain français et fondations

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Forming the concrete foundations of a building

Accueil » Concrete foundation: Composition, types, solidity » Forming the concrete foundations of a building

The formwork of a building is carried out after the excavation work before the concrete is poured. The purpose of the formwork is to keep the concrete in place until it is dry and not mixed with the ground. Concrete formwork is an important step in the construction of a building or the renovation of foundations. The intervention of experienced professionals is essential to the quality of the structure.

VOPAA your foundation expert gives you some explanations.

The principle of the formwork technique

As we have already said in the article on concrete foundations, the flooring is now built of poured concrete or formwork. The formwork is a mould that allows the concrete to be poured in a controlled manner to give it a well-defined shape. The formwork will be removed once the concrete is dry.

Formwork is an essential phase when pouring concrete. The professional chester usually uses wooden panels to make a formwork. The important thing is to protect the concrete from impurities, pebbles and soil so that it is as pure as possible. Thanks to the formwork, the concrete spreads evenly.

How do I get the solidity of the concrete  ?

Once the concrete is poured, the chester sometimes uses a concrete vibrator. This results in quality concrete by improving the distribution of the filling. Reinforcement can be improved by adding scrap to obtain reinforced concrete. To ensure that the concrete is solid, it must be allowed to ripen for a number of days, which varies depending on the type of concrete.

Different types of foundation formwork

The professional will take into account different criteria before making the formwork, including the desired shape, the type of construction, etc. Examples of   formwork types   include:

  • The wooden formworkresidential concrete formwork

This type of formwork consists of planks/wooden slabs assembled according to the technical constraints of construction. The material, pine or plywood, must be strong, thick to withstand the push of concrete and benefit from sharp edges.

  • Insulating formwork

The insulating formwork can be used in small and large construction sites. It is a formwork made of insulating panels. These panels have two roles, either to serve as molds for concrete and to insulate the foundation. Once the concrete has taken, the professional will be able to leave the formwork in place as it will be used as thermal insulation.

insulating foundation formwork

 

For a free and detailed submission,contact our team of foundation experts in Gatineau

 And Montreal

PHONES :

Ottawa Region 1  819  962-6981

Montreal Area 1,514-269-0249

The work of de-cluttering

The de-cutting operation is delicate because the concrete, once dry, is still fragile, especially on the edges and corners. It can deform and crack. In order not to weaken the concrete, the expert will meticulously remove the poles and the holding pegs one after the other.

Then he will tap with a hammer to uncouple the concrete formwork. It is possible to make a cure to protect the concrete from cold or heat while it is walling. Usually, the de-cluttering should be done 7 days after the pouring and the concrete will reach its maximum MPA after 28 days.

formwork to repair a concrete foundation
Forming with wooden panels
repaired foundation and de-cluttered concrete
Repair result after de-de-cluttering

 

Foundation in concrete blocks or concrete

The quality of the foundation, also called solage,is a crucial element for the construction that guarantees the solidity of the structure of the building. For foundations, it is possible to choose between two types of construction: the concrete foundation and the concrete block foundation.

  • The concrete technique

This is the most common solution. This technique is resistant over time and offers good waterproofing. The principle is to pour concrete into a formwork.

  • The technique of foundation concrete blocks

The masonry elements are bound by mortar joints. The inside of the concrete blocks is empty to bring in air. This combination of air-filled concrete blocks acts as a natural thermal insulator. On the other hand, this type of construction requires good drainage of the bases. The installation of a French drain to avoid moisture stagnation is essential.

In Quebec, the concrete solution is recommended for the foundations of buildings. Indeed, this type of formwork is not sensitive to frost and temperature variations that can be very important in Quebec region.

Regardless of the type of foundation,cracks may appear on the walls or cracks on the front of the house. In this case, the intervention of a professional team is essential to diagnose the origin of the problem. The expert moves and determines the causes of the cracks. After careful analysis, he will be able to offer you a suitable solution to repair cracks in the walls and foundations in a sustainable way.

Our team intervenes on a renovation as well as on a new construction. Don’t hesitate to contact our experts in Gatineau and Montreal to benefit from all our expertise and advice. We make a free and complete submission so you can make an informed decision without haste.

formwork with frame for a commercial concrete structure Commercial structure forming

 

 

 

 

 

 

 

Read in the portfolio of our construction sites 

The maintenance of a concrete slab in Buckingham, Gatineau

 

excavation et réparation de fondation à Gatineau

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1 819 962 6981
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Questions sur la réparation de fondation à Gatineau

Faut-il quitter les lieux durant les travaux?

Non il n’est pas nécessaire de quitter lors des travaux. Bien qu’il soit possible qu’une tranchée profonde surlonge tout le périmètre de votre maison durant les réparations, nous avons des installations sécuritaires pour que vous puissiez rester à la maison. Des rampes d’accès sont installées afin de permettre au client d’entrer et sortir à leur guise.

Peut-on baisser le taux d’humidité dans un sous-sol en réparant la fondation?

L’imperméabilisation et la pose d’un drain français protègent en effet votre sous-sol de l’humidité. Si la ou une des sources d’humidité  provient d’une faille de votre mur de fondation, la réparer va contribuer à régler le problème.

Les membranes installées par VOPAA inc. ont des propriétés imperméables et pare-vapeur afin de garder un sous-sol bien au sec. Sachez qu’un taux élevé d’humidité contribue à la formation de moisissure qui peut causer des problèmes de santé importants.

 

Vous pouvez toujours vérifier d’autres éléments tels que la plomberie et les fenêtres qui peuvent également représenter la cause d’une forte présence d’humidité dans l’air.

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