What are concrete void forms?
What are concrete void forms?
SureVoid® products are corrugated paper construction materials, commonly known as “void forms” or “carton forms”. They create space between concrete structures and expansive soils, thereby isolating the concrete from the swelling ground.
What is the purpose of void forms?
Void form is an important component used in the construction of structural concrete foundations where expansive soils are present. Void forms provide temporary support for structural floors, beams and walls until the concrete is self-supporting on the drilled piles or caissons.
How do you create a void in concrete?
Today, the two most common methods used by contractors to produce a void in concrete consist of using either a multi-use removable former or a single-use expendable former. For site concreting, the removable types are usually made of rubber and the expendable types of fiberboard.
What is a void form?
Void forms are sacrificial formwork members designed to provide a space between the concrete foundation and expansive soil, i.e., to protect the foundation from the heave of the underlying soil.
What is a slab on void?
Voided slabs are significantly improved versions of solid slabs and offer more improvements for the building as a whole. They consist of two thin slabs and ribs connecting them, having the same or better performances than a solid slab, with less concrete used. Structural benefits.
How do void forms work?
Carton void forms are designed to hold up the weight of fresh concrete long enough for the concrete to cure and support itself on piers or beams. Since it is a paper product, it absorbs the moisture of the surrounding soil and concrete and its supportive strength gradually diminishes.
What can I use as a concrete release agent?
Castor oil, or petroleum jelly thinned with kerosene, also are good release agents. Concrete forms, even if they are ground, smoothed and polished, require a release agent to prevent sticking and enable easy stripping. Light colored petroleum oils or oil emulsions or various types have been used successfully.
How do you fix air pockets in concrete?
Use aggregate that is more uniform in shape. Irregular shaped pieces of aggregate tend to make the concrete less fluid. Techniques used during vibration can eliminate most surface voids. Vibrating both the outside and inside of your mold will draw most air and water bubbles away from the surface of the concrete.
What is slab on void?
SlabVoid® is a corrugated paper carton void form that helps eliminate severe damage to a structural concrete slab by creating a space between the slab and underlying expansive soils. The SlabVoid® material provides a temporary platform for the placement of liquid concrete.
Why is bubble deck slab not used in India?
Any new technology having proven potential is not welcome in India because of averting risk of it. Huge span with much lower consumption of concrete and steel could be designed with voided bi-axial slab system.
What is hardy slab?
Hardy Slab Is Used Where Temperatures Are Very High. To Resist The Temperature From Top Of Slab Thickness Is Increased. Heat Coming From Walls Are Resisted By Using Special Bricks Which Has Thermacol In It. Thermacol Is Best Insulator Of Sunlight.
What is slab void?
What is void form in concrete?
Carton void forms are designed to hold up the weight of fresh concrete long enough for the concrete to cure and support itself on piers or beams. Since it is a paper product, it absorbs the moisture of the surrounding soil and concrete and its supportive strength gradually diminishes.
SureVoid ® products are corrugated paper construction materials, commonly known as “void forms” or “carton forms”. They create space between concrete structures and expansive soils, thereby isolating the concrete from the swelling ground.
What is void Box Foundation?
A growing method for preventing foundation problems is the use of “void boxes” aka “carton forms”. They typically elevate the foundation about 8 inches above grade.