MVN GROUT 725GP

SUBSTRATE PREPERATION

• All substrate surfaces should be sound, clean and free from dust, oil, grease or any loosely adherent materials. If the substrate surface is defective or contaminated it must be cut back to a sound base. After preparation is complete, saturate the surface with clean water for a minimum of three hours prior to grouting. Care should be taken to remove all surplus water prior to grouting.
• The formwork must be leak-proof, and suitable release agent should be applied to all surfaces of formwork.

PLICATION AND CURING

Mixing

• The water demand will depend on mixing efficiency, material, and ambient-temperature conditions. Adjust the water to achieve the desired flow. Mix grout between 3 and 5 minutes after all material and water is in the mixer until a homogenous consistency is achieved. For best result a mechanically power mixer should be used. Mix the composition with medium speed 400 – 500(rpm) to get properly freshly grout.
• For a flowable consistency, start with 3.0 – 3.5 kg of water per 25 kg bag
• For a fluid consistency, need more water to reach high efflux slurry, start with 4.0 – 4.5 kg of water per 25 kg bag
• Place estimated water (use potable water only) into the mixer, then slowly add the grout.

Placement

• Pour the mixed grout from only one side of the void, to eliminate the entrapment of air. The pouring side should be raised by means of a hopper or grout box to maintain a minimum 150mm head of grout at all times. For larger pours the grout may be placed into a removable hopper. With large volumes have to be placed the grouting should be carried out by pump. A heavy duty diaphragm pump is recommended for this purpose. Screw feed and piston pumps may also be suitable

Curing

• It is necessary to cure all exposed surfaces. The use of a concrete curing membrane, wet hessian or continuous water spray is recommended

Cleaning

• All tools and equipment should be rinse with water immediately after use, clean and remove all traces of grout.

HEALTH AND SAFETY

• During use, avoid inhalation of dust and contact with the skin and eyes. Wear suitable clothing, gloves, eye protection and respiratory protective equipment.

PRODUCT INFORMATION

TECHNICAL DATA