Teknocem LA
Application

Typically used in the reinstatement of large structural sections on bridges, soffits and other large structural elements. It is suitable for use where carbon dioxide and chloride resistance is required.

Description

A blend of special Portland cements, ground granulated blast furnace slag, plus high quality, continuously graded, non ASR reactive aggregates. The product, when mixed with water, produces a homogenous concrete which will not segregate or bleed and has a dual shrinkage compensating system giving volume stability in both the plastic and hardened states. The mix has high flow characteristics and will not rapidly stiffen.

Teknocem LA may be used for all concrete repairs up to 200 mm thickness, wherever a flowing concrete is required. The product is easily mixed and placed under gravity or by pumping. The placed material is self-compacting and will displace air from the repair area ensuring a strong bond between the placed material and the repair substrate.

The use of the Portland blast furnace type of cement gives a mix design with less than 3 kg of equivalent sodium oxide per m³, thus minimizing the risk of alkali aggregate reaction even in the parent concrete. In addition, the mid-range resistivity enables cathodic protection to be undertaken in conjunction with Teknocem LA.

Features/ Benefits:

  • Low alkali content minimising alkali-silica reaction.
  • Excellent bond to substrate without requirement for a primer.
  • Self-compacting micro-concrete eliminates requirement for vibration during placement.
  • Suitable for hand and pump placement.
  • High strength and low permeability provides resistance to chlorides and carbon dioxide.

Applications:

Typically used in the reinstatement of large structural sections on bridges, soffits and other large structural elements. It is suitable for use where carbon dioxide and chloride resistance is required.

Priming:

Highly porous substrates should be primed with Teknoprime 842.

General information

Uniclass 2015

Pr_20_31_16_68 Proprietary concretesPrimary

CAWS

C42/330 Proprietary self-compacting concrete for recasting

Specification data - Proprietary concretes Enhanced data

Product Reference

Teknocem LA

Standard product features

Application thickness:

5–80 mm.

Technical properties:

  • Density (13% water content): 1925 kg/m³.
  • Compressive strength: 60 MPa (28 days).
  • Flexural strength: 9 MPa (28 days).
  • Shrinkage: 0.001%.