MasterRheobuild 1031

High range water reducing admixture for concrete

How does MasterRheobuild 1031 work?

MasterRheobuild 1031 is a powerful plasticizer based on lignosulphonate which disperses and deflocculates the cement particles within a concrete mix. It can be used to improve workability, without the addition of extra water, or to allow reductions in the free water content of the concrete mix. MasterRheobuild 1031 is extremely versatile in application and is effective over a wide range of mix designs and cement contents.
MasterRheobuild 1031 complies with ASTM C-494 Type A & D and is WRC Approved for contact with Potable Water.

What is MasterRheobuild 1031 used for?

MasterRheobuild 1031 is used in dry silo powder mixes; dry silo sprayed concrete mixes; ready-mixed and precast concrete where a low water/cement ratio or high workability is required; high strength structural concrete; flowing concrete for ease of placing and concrete mixes with low permeability for durable structures.

What are the benefits of MasterRheobuild 1031?

MasterRheobuild 1031 offers the following benefits:

  • Provides high quality rheoplastic non-segregating concrete.
  • Mixes containing MasterRheobuild 1031 harden to provide enhanced compressive strength, impermeability, durability and dimensional stability (high elastic modulus, low shrinkage and creep).

Direct contact

Ian Ellis

Technical Services Manager

+44 7966 123447


MasterRheobuild 1031 Declaration of Performance

pdf (66.03 Kb)

MasterRheobuild 1031: Technical Data Sheet

pdf (106.40 Kb)