Fosroc Conbextra Gp2 Non Shrink Grouting Powder

Product Details:

Conbextra GP2
page 1 of 4
Free fl ow, high strength, non-shrink,
cementitious precision grout
Uses
Conbextra GP2 is used for precision grouting where it is essential
to withstand static and dynamic loads. Typical applications would
be the grouting of base plates of turbines, compressors, boiler
feed pumps etc., It can also be used for anchoring a wide range
of fi xings. These include masts, anchor bolts and fence posts.
Advantages
 Gaseous expansion system compensates for shrinkage
and settlement in the plastic state
 No metallic iron content to cause staining
 Pre-packed material overcomes onsite batching variations
 Develops high early strength without the use of chlorides
 High ultimate strength ensure the durability of the hardened
grout
 Free fl ow ensures high level of contact with load bearing
area
Description
Conbextra GP2 is supplied as a ready to use dry powder. The
addition of a controlled amount of clean water produces a free
fl owing, non-shrink grout for gap thicknesses up to 100mm.
Conbextra GP2 is a blend of Portland cement, graded fi llers
and chemical additives which impart controlled expansion in the
plastic state whilst minimising water demand. The low water
demand ensures high early strength. The graded fi llers are
designed to assist uniform mixing and produce a consistent
grout.
Technical support
An experienced technical advisory team is available to give
technical service on request.
Properties
Compressive strength : (BS 1881 - Part 116: 1983)
Compressive strength (N/mm2)
Age (days) Consistency
Flowable (W/P 0.18) Pourable (W/P 0.165)
1 24 26
3 45 51
7 55 57
28 65 68
Compressive strength with addition of aggregates
Age Compressive strength (N/mm2
) W/P 0.18
(days) % of aggregates ( IS 516 - 1959)
50% 75% 100%
1 28 30 32
3 50 52 55
7 60 63 68
28 70 75 78
Flexural strength ( BS 4551, 1998)
Age Flexural strength (N/mm2
)
(days) W/P 0.18
1 2.5
3 7.0
7 9.0
28 10.0
Tensile strength 3.5N/mm2
@ 28 days
(W/P - 0.18)
Pullout bond strength 17 N/mm2
@ 7 days
(W/P - 0.18) 20 N/mm2
@ 28 days
Time for expansion Start : 20 minutes
(after mixing ) Finish : 120 minutes
Freshwet density Approximately 2220kg/m3
depending on actual
consistency used
Young’s modulus 28 kN/mm2
(ASTM D469 - 94)
Dynamic load resistance Specimens of Conbextra GP2
remained undamaged even
after subjecting them to
alternate loads of 5N/mm2
&
25N/mm2
at the rate of 500
cycles / minute for two million