What is polymer modified screed?
What is polymer modified screed?
A polymer screed is similar to a traditional cementitious screed except there is the addition of an SBR additive to enhance drying times and to strengthen the floor. Shrinkage and cracking are minimised, permeability is reduced and flexural strength is improved.
What is modified screed?
Polymer modified screeds are typically specified when thin high performance screeds are required. Polymer modification of screeds increases; flexural strength, tensile strength, compressive strength and durability, allowing screeds to be laid thinner.
Can I use screed instead of concrete?
Because concrete has the potential to hit very high strengths, it is used across the construction industry for structural purposes – including floor slabs. Screed however is a smoother mix, which consists of considerably less aggregates to that of the mix used for concrete.
What is SBR screed?
SBR Polymer Screed includes a synthetic polymer resin to give increased toughness and bond properties. Shrinkage and cracking is minimised, permeability is reduced and flexural strength is improved. This screed provides high performance at thinner sections and is ideal when normal thickness cannot be achieved.
What is the difference between screed and topping?
Bonded screeds or toppings are applied to a surface at a later stage of the construction process, while unbonded screeds or toppings are used where they are not required or able to be bonded directly to the concrete floor.
What can SBR be used for?
PRODUCT DESCRIPTION: Construction Chemicals SBR is a white styrene butadiene emulsion used to improve the properties of cement renders, screeds and mortars. It is also used in conjunction with Construction Chemicals Tanking Slurry as a priming coat or tight render basecoat.
How much is a screed SBR?
The usual procedures is to pre-mix sand and cement in the mixer, pour in the SBR Bond, mix for 1 – 3 mins, then slowly add water to the required consistency….Description.
| Screed | Topping | |
|---|---|---|
| SBR Bond | 0.2 | 0.2 (ie 10 litres per 50kg bag of cement) |
| Water | As required | As required |
How thick should sand and cement screed be?
The optimum thickness of a sand and cement bonded screed is 25–40mm, an unbonded screed should have a minimum thickness of 50mm, whilst a floating screed should have a thickness greater than 65mm for lightly loaded floors and 75mm for more heavily loaded floors.
Can you use Quikrete polymer modified structural concrete repair?
It is a pre-blended cement and sand mixture that also has the addition of a polymer as a bonding and application agent. Quikrete 50 lbs. Polymer Modified Structural Repair is strong enough to handle heavy commercial concrete applications, but also is easy enough to use to make repairs around the house.
Which is the best cement for setting screed?
Fast-set screed such as Ardex Ardurapid and Isocretes screedfast rely on aluminium based cement to accelerate the setting process. This type of screed tends to be foot traffickable after an hour or two, and is usually dry within 2 days.
What can SBR screed be used for in concrete?
SBR Polymer Screed is ideal to use for concrete ground floor slabs and other flooring applications. The properties of SBR Polymer Screed make it ideal for refurbishment and repair work. Why use SBR Polymer Screed?
Can a partially bonded floor screed be used?
Partially bonded screeds are a cheap alternative to doing the job properly, and have the added risk of the floor screed failing, because at depths less that 50mm, the screed can start to break up if the bond to the concrete is lost.