Conspeed
Accelerator for Concrete And Cement Mixes Conforms to BS 5057: Part 1 : 1982 and ASTM C494-80 Type E

DESCRIPTION

Conspeed is an accelerating water-reducing admixture designed to accelerate the setting time of concrete and cement mixes by aiding the hydration of cement and increasing the density. Conspeed is of particular value to the precast concrete industry where it is necessary for concrete to set more rapidly for greater productivity.

It is NOT recommended. for use in reinforced concrete. Standard mix design methods may be used with a reduction of the cement content by approximately 10%o when compared with plain concrete at equivalent workability.

With harsh aggregates or gap-graded mixes the cement reduction may be less than 10%, however, a marked improvement in cohesion will be achieved with reduced segregation and bleeding.

TYPICAL PROPERTIES

  • Speeds up the initial setting time, thus, enabling formworks to be removed earlier and re-used.
  • Enable the production of workable, high early strength, higher density concrete with reduced tendency to segregate, bleed and creep.
  • Aids compaction and the production of fair-faced concrete
  • Reduce viscosity thus improving pumpabi5ty.
  • Enable optimum cement contents to be selected
    for given strength requirements.
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SPECIFYING

"Conspeed" should be specify by name and used as per Application instructions below.

APPLICATION INSTRUCTIONS

Conspeed should be added together with the gauging water at a dose rate of 0.25 to 20 litres per 100 kg cement depending on the degree of acceleration required. As a guide, the following table may be used.

Conspeed Dose Rate Initial Setting Time Final Setting Time
Control-no addition 2 hours 3 hr. 30 min.
0.25 litre per 100 kg cement 1 hr. 15 min. 3 hr. 5 min.
0.50 titre per 100 kg cement 35 minutes 2 hr. 25 min.
1.0 litre per 100 kg cement 25 minutes 1 hr. 55 min.
2.0 litre per 100 kg cement 15 minutes 35 minutes

Note that the above figures will vary with different cements and conditions prevailing at site.

Therefore site trials should be carried out to find the optimum dosage for any particular degree of acceleration required. N.B.: Conspeed must be stirred before use, especially before decanting from the container.

PRODUCT DATA

Physical Appearance Low viscosity dark brown liquid
Specific Gravity 1.21 0.01.
Chloride Content More than 10%aw/w.
Dosage 0.25 to 2.0 litres per 100 kg cement.
Packing 210 litre and 25 litre drums.
Flash Point Non-flammable.
Storage Protect from extremes of temperature.
Shelf Life Indefinite in sealed containers.

Unicorp Sendirian Berhad Lot 66, Beribi II Industrial Estate,
B.S.B. BE1118 P.O. Box 620, Bandar Seri Begawan BS8671,
Brunei Darussalam
Tel: 673-245 0450, 245 0500, 245 0998
Fax: 673-245 0999 E-mail: unicorp@brunet.bn or unicorpbrunei@brunet.bn
Copyright Unicorp Sendirian Berhad All Rights Reserved 2005

Chloride Content More than 10%aw/w. Dosage 0.25 to 2.0 litres per 100 kg cement. Packing 210 litre and 25 litre drums. Flash Point Non-flammable. Storage Protect from extremes of temperature. Shelf Life Indefinite in sealed containers.

Unicorp Sendirian Berhad Lot 66, Beribi II Industrial Estate,
B.S.B. BE1118 P.O. Box 620, Bandar Seri Begawan BS8671,
Brunei Darussalam
Tel: 673-245 0450, 245 0500, 245 0998
Fax: 673-245 0999 E-mail: unicorp@brunet.bn or unicorpbrunei@brunet.bn
Copyright Unicorp Sendirian Berhad All Rights Reserved 2005