Hima Innovation

Creating products that are durable and easy to use, responding to customer needs and anticipating future demands are just some of the challenges which Hima Cement's research and development teams face as they work to develop innovative products which give excellent value to all of Hima's customers.

 

Cement for Road Stabilization

entebbe express way

Road construction and soil remediation require specific cements with longer setting and hardening time properties. Hima Cement has specially developed RoadCem, a cement binder that brings strength and soil compatibility to roads and soil applications. This requires less road layer thickness, thus generating savings in raw materials and reducing the overall cost of projects.

The need

To reduce plasticity index of all purpose soils including road sub bases, railway bases, airport and yards in the most effective manner by using soil stabilization and backfill to overcome deficiencies in available stabilization material and enhance the material properties of pavement to meet design requirements.

To provide for sufficient open time to allow blending and compaction. Stabilization products are designed to control the plasticity and enhance the strength of various road construction materials. The principle products used are Portland cement, fly ash, slag, lime or mixtures of these to address the specific site conditions and conform to the applicable standards.

The Solution

Roadcem HRB 32.5E is a specialized cementitious binder designed to meet the needs of wide range of road stabilization applications.

Depending on the specific site conditions, the product is formulated from Portland cement clinker and naturally occurring pozzolana.

Roadcem is suitable for:

• Stabilization of road base, sub-base and dub-grade material and ash dumps
• Soils with either low or moderate plasticity – it is especially suited to granular type materials with a lower PI
• In situ stabilization
• Minor general concrete work

Roadcem achieves strength at 7 days > 20,0 MPa and at 28 days > 32,5 MPa, as required for this class of general purpose cement in accordance with the regulated standards.

Powercrete

Powercrete CEM I 52.5 OPC is the ultra high strength cement that offers a compressive strength of 52.5 MPa (N/mm2) minimum. The only 52.5 class cement in Uganda, Powercrete is formulated to provide concrete mixes that require higher ultimate strength and resilience.

Powercrete is a premium technical cement that combines excellent strength performance at all ages with versatility and enhanced durability benefits, as well as:

• Higher strength benefit with less cement dosage (lower concrete cost)
• Can be extended further to give extra value and customized mixes
• Lower alkali content (suitable for use in aggregate susceptible to alkali-silica reaction)
• Aesthetically bright finishes
• Fast setting applications

Powercrete was designed specifically for the Standard Guage Railway.  It is also ideal  for other high  strength  applications  such  as skyscraper foundations, precast slabs and beams, bridges, overpasses, windmill foundations, heavy-duty industrial floors, pre-stressed or post-tensioned concrete and more.

Tailored Solutions

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    Hima Cement works closely with partners in the mining industry to find customized solutions for the specialized applications in the industry. Hima Cement through its research centers ensures to develop fully optimized global mining solutions for our clients in the mining industry. Some of our offering to the mining industry include the following:

    - Horizontal and vertical shaft development
    - Paste-fill production and backfilling
    - Mine backfill technical support services
    - Customized backfill blend design offering
    - Shotcreting
    - Mine soil remediation and stabilization
    - Mine closure solutions (plugging and shaft capping) Minecem CEM III 32,5 is a slag cement customised for mine backfilling operations in environments susceptible to aggressive chemical attack.

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    Cement-based solidification of hazardous waste sludge has long been used as a stabilization method. Cement is one of the commonest binders used for immobilization of hazardous wastes preventing leaching tendencies of environmentally hazardous compounds. Petroleum hydrocarbons, alkanes and polycyclic aromatic hydrocarbons are confined within the cement matrix by macro encapsulation.

    Hima Cement’s Portland pozzolanic extended products (Powermax and Multipurpose) have suitably been applied in immobilization of constituent aggressive chemicals in oil wastes. The low Calcium aluminate content in our products eliminates chances of expansive cracking of stabilized waste mass and at the same time, the pozzolanic extension in cement provides the required silicates to react with emitted hydroxides and ensure long term stability.

    The lime content in cement also provides for a raised pH and reaction temperature which thereby improves stiffening and setting characteristics of the stabilized waste mass. Addition of compatible sorbents and emulsifiers ensures the stabilized mass overcomes the problem of pollutant migration and subsequently lowers leaching losses from treated waste mass. Hima Cement directly and indirectly contributes to securing a cleaner, habitable environment.