Krystol Internal Membrane™ (KIM®)

kim

DESCRIPTION

Krystol Internal Membrane (KIM) is a hydrophilic crystalline admixture used to create permanently waterproof concrete.

KIM lowers the permeability of concrete and is used in place of surface applied waterproofing membranes. By stopping the transmission of water through concrete, KIM adds durability and longevity to concrete by protecting it against chemical attack and corrosion of reinforcing steel.

IMPORTANT OVERVIEW

You are making a waterproof membrane out of the concrete. This is different from traditional construction where the concrete just forms the structure. The KIM concrete you are placing will be the only barrier to water penetration. This means that common defects found in typical concrete cannot be tolerated. Poor consolidation, unplanned cold joints, cracks, penetrations, contaminations, etc. will all result in a leaking structure. To avoid leakage and to achieve success, you must follow the critical instructions outlined in this document. Furthermore, you must properly record all relevant data in order for the manufacturer’s warranty to be valid.

MIX DESIGN CONSIDERATIONS

EFFECTS ON PLASTIC CONCRETE

KIM has been specially formulated to meet the requirements of projects in different climate conditions as follows:

Typical influence of KIM at maximum dosage on concrete plastic properties in standard laboratory conditions:

Plastic Properties

PRE-POUR SITE MEETINGS

The Site Superintendent must arrange and attend a meeting that includes a Kryton representative, the concrete supplier and applicable representatives of the forming, placing and finishing contractors. The meeting needs to be scheduled well in advance of the initial concrete placement in order to communicate any modifications required for a successful concrete project. Discussion will include the following:

CONSTRUCTION JOINTS & DETAILS

Construction Joints and Details need to be treated using the Krystol Waterstop System to create a watertight structure. The following Application Instructions need to be referenced based on the selected detail:

*May require minor modifications to concrete forms dependent on waterproofing joint detail selected.

BATCHING AND ON SITE DOSING

HANDLING, PLACEMENT AND FINISHING

CONCRETE TESTING

Ensure field sampling and testing is performed by a certified ACI Level 1 Concrete Field Testing Technician or equivalent, and that the testing laboratory is certified to ASTM C1077 or equivalent. All testing procedures should follow ASTM, CAN/CSA, or equivalent. It is recommended to perform field tests at least once for every 115 m3) of concrete placed. The owner, general contractor, or job specifications may require additional testing from what is called for below, but the following data must be recorded to comply with the manufacturer’s product warranty requirements:

Forward all test results to manufacturer or manufacturer’s representative. In cases where concrete loads are accepted that do not conform to specifications, record the name of the person authorizing the acceptance and the location of concrete placement.

CURING AND PROTECTION

Proper curing is essential to minimize cracking and achieve the performance and benefits of KIM. Cure in accordance with ACI 308.1 guidelines. Wet curing the concrete with a fog mist spray, sprinkler or wet coverings (burlap, curing blankets) for 7 days is recommended. Alternatively, immediately apply a curing compound conforming to ASTM C309. Protect from rain, excessive wind, and sun. Take protective measures in hot weather (see ACI 305R) and cold weather (ACI 306R) as applicable.