Renderoc RG BD Price

High strength, Shrinkage compensated, Free flow, Cementitious micro-concrete for Repairs

Uses

Renderoc RG is used for repairs to damaged reinforced concrete elements, particularly where access is restricted and where vibration of the placed material is diffi cult or impossible. It is suitable for various structural strengthening measures such as encasement build-ups, jacketing etc.

• Gaseous expansion system compensates for shrinkage and settlement in the plastic state.
• Can be pumped or poured into restricted locations.
• Highly fluid to allow for placement without vibration.
• Pre-packed to overcome site-batched variations.
• Rapid strength gain to facilitate early reinstatement.
• High ultimate strengths and low permeability of cured repair.
• Contains no chloride admixture.

Description

Renderoc RG is supplied as a ready to use blend of dry powders which requires only the site addition of clean water to produce a high strength, free-flowing, shrinkage compensated, repair micro concrete. The material is based on Portland cements, graded aggregates and fillers, and additives which impart controlled expansion characteristics in the plastic state, while minimising water demand. The low water requirement ensures high early strength and long-term durability.For larger repairs, the mixed Renderoc RG may be modif ied by the addition of 5mm to 12mm clean, graded, saturated surface dry aggregates at site. For exceptionally large repairs, the local Fosroc office shall be consulted.Renderoc RG BD PriceDesign criteria Renderoc RG(M) can be applied in sections upto 100mm deep. For larger sections, the addition of approved aggregates may be required. This will depend on the specific configuration of the repair location. Fosroc office shall be contacted for further information.

Renderoc RG

Specification clauses Performance specification

The fluid micro-concrete repair material shall be a single component, cement based, micro-concrete to which only the site-addition of clean water ( and approved graded coarse aggregates where specificed) shall be permitted. The micro concrete shall contain no metallic aggregates, or chlorides and shall be shrinkage compensated in the plastic state.The micro concrete should achieve a compressive strength of not less than 24N/mm2 after 24 hours, 55N/mm2 after 7 days and 65 N/mm2 after 28 day s at 300C. Most importantly, The flexural strength shall not be less than 10 N/mm2 @ 28 days.The micro concrete shall have a coefficient of thermal expansion similar to that of the host concrete. The mixed density of micro concrete shall exceed 2100 kg/m3 at 270C.

Supplier specifi cation

All micro crating (specify details and areas of application) must be carried out using Renderoc RG, manufactured by Fosroc, applied strictly in accordance wtih the manufacturer’s technical datasheet.

Application instructions

Preparation

Renderoc RG BD Price The unrestrained surface area of the repair must be kept to a minimum. The form wok should include drainage outlets for pre-soaking and, if beneath a soffit, provision for air venting. Provision must also be made for suitable access points to pour pump the mixed micro-concrete in place. Defective concrete surfaces must be cut back to a sound base. Smooth surfaces should be mechanically roughened. Corroded reinforcing steel should be exposed around its full circumference and cleaned to remove all loose scale and corrosion deposits. It is important to clean the steel to a bright condition. Grit-blasting is recommended.One coat of Nitozinc Primer should be applied on the reinforcing steel. If any discontinuity in the applied film is noticed, onemore coat has to be applied. Several hours prior to placing, the concrete substrates should be saturated with clean water. Immediately prior to placing, any free water should be removed. Alternatively, all prepared concrete substrates should be primed using Nitobond EP, a slow - setting epoxy bond aid. Nitobond EP shall be applied only on dry substrate.Note : For repair sections generally deeper than 100mm it may be necessary to mix the Renderoc RG with properly graded 5mm to 12mm silt-free aggregate to minimise temperature rise. The quantity of aggregate required may vary depending on the nature and configuration of the repair location. The typical results with a few aggregate proportions, for various applica tions are furnished below for guidelines.

Packaging

Renderoc RG is supplied in 25 kg moisture resistant bags.

Shelf life

6 months if kept in a dry store in the original, unopened bags. If stored at high temperatures and/or high humidity conditions the shelf life may be reduced.Relative ProductsFacebook Page