Liviza Building Materials is the pioneer in introducing Fiber concrete spacers (also known as cover blocks) in Bangladesh. Liviza is the professional in the field of production and distribution of high quality, especially Concrete Cover Block to ensure structural steel elements before and during concreting in the Bangladesh.
Vision – Values
At Liviza – our mission is the commitment to quality and customer satisfaction –We are fully certified on high technology, product quality and have sufficient experience to advise all product manufacturing and distribution.
With multiple tests conducted at reputed test labs, LIVIZA rebar spacer have been approved and used in various prestigious projects. Liviza is proud of all the products we supply to customers all quality standards for each project.
|Product Code||Picture||Clear Cover/ Size||Application|
|L40-200||40mm (3” Circle)||Spiral Column, Column & Pile|
|50 mm (4” Circle)|
|65mm (5” Circle)|
|75mm (6” Circle)|
|200mm (8” Circle)|
Reinforced concrete durability is only achieved by protecting the steel reinforcement from environmental attack. The level of the protection depends not only upon the quality of the cover concrete but also upon the type and quality of the spacers that are used. The focus of standards/ specification on improving concrete quality and durability has not been matched by improved spacer requirements.
Eurocode 2 and the British Standard and AS/NZS standard have clearly specified rebar spacer strength and dimensional tolerance and their adoption improves concrete performance. Reflecting the recognition of how concrete spacers can affect concrete durability, standard/specification are now also including spacer durability properties that required them to match or exceed those of the host concrete.
British Standard: Structural use of concrete — BS 8110-1:1997
Part 1: Code of practice for design and construction.
The mix used for spacer blocks made from cement, sand and small aggregate should be comparable in strength, durability, porosity and appearance to the surrounding concrete as far as is practicable. Concrete spacer blocks made on the construction site should not be used.
Schedule of Rate, LGED, October 2019
Section – 12: Chemical Admixture, Galvanizing & Curing Compound and Concrete Cover Blocks
Sub-Section – 4.12.04 (4.12.04.01 to 4.12.04.08)
CCB: Supplying concrete cover block (CC Block) as specified size conforming to BS 8110-1, satisfying a compressive strength fc=35 Mpa (5076 psi) Min ensuring perfect clear cover to rebar in concrete structure. The mix used for spacer blocks made from cement, sand and small aggregate should be comparable in strength, durability, porosity and appearance to the surrounding concrete as far as is practicable. Concrete spacer blocks made on the construction site should not be used.