Specifications

accelerator

Product Description

SA is a ready-to-use liquid admixture formulated to accelerate the setting time of concrete and to produce high-early strength in special application concrete. It does not contain added chloride and conforms to the most stringent chloride ion limits required by concrete industry standards.

Recommended For

All types of concrete where a type accelerator is beneficial:

concrete subject to chloride ion constraints such as high rise buildings in coastal environments

concrete blocks and bricks used to obtain high early and ultimate strengths in concrete particularly where steel reinforcement is absent.

concrete placed on galvanised steel floor and roof systems which are left in place

precast concrete either pre-tensioned or post-tensioned

concrete pipes and other manufactured concrete products such as tiles and blocks

concrete highway and bridge construction

cold weather concreting

Features and Benefits                  

SA has a significantly faster setting time than plain concrete.

Increasing the dosage rate increases set acceleration.

Both the compressive and the flexural strengths of concrete develop, more rapidly than with plain concrete.

Benefits to concrete construction and to the manufacture of concrete products because of this earlier setting and strength gain in cold weather include:

earlier finishing of slab-work without the need for calcium chloride

more efficient scheduling, generally faster construction and earlier occupancy

earlier stripping and re-use of forms for walls, precast work and other fast-track construction

earlier structural use of concrete such as tilt-slab, paving, floors, car-park

potential energy savings in steam cured concrete (precast, pre-stressed, blocks) by reducing curing temperatures and/or steaming time necessary to reach desired transfer strengths

SA contains no added chlorides which means it will not initiate or promote the corrosion of reinforcing steel.

Addition Rates

Range: 1.0% - 3.0% by weight of cement. The performance of SA is best assessed after preliminary tests on site to determine the optimum dosage and effect on compressive strength. As a guide to these trials, an addition rate of 1000ml-3000ml SA per 100 kg cement is recommended.

Packaging & Storage

SA is supplied in 205 litre sealed drums and bulk delivery.