Our Services

CONCRETE REMEDIATION

Expert Concrete Repairs and Remediation Services by Entekra

Concrete structures are the backbone of modern infrastructure, and maintaining their integrity is crucial to ensuring safety, functionality, and longevity. At Entekra, we specialise in delivering comprehensive concrete repair and remediation solutions tailored to address a wide range of structural issues. Whether your concrete is showing signs of wear or requires preventative treatments, our team is equipped to provide lasting results that protect and enhance your investment.

Why Your Concrete May Need Repairs or Remediation

Concrete deterioration can arise from various causes, impacting both appearance and performance. Identifying and addressing these issues promptly can prevent costly future repairs and extend the lifespan of your structures. Here are some common challenges:

Spalling Concrete

Spalling occurs when concrete flakes, chips, or crumbles due to moisture penetration and freeze-thaw cycles. We resolve this issue by removing damaged sections, treating steel reinforcements, and applying durable repair mortars to restore both function and appearance.

Concrete Cancer

Often caused by carbonation, concrete cancer occurs when steel reinforcements corrode, leading to cracks and structural weakening. Our solutions include the use of corrosion inhibitors and high-performance repair mortars to halt further damage and restore integrity.

Cracks and Cold Joints

Cracks may result from thermal expansion, shrinkage, or structural loads, while cold joints occur when new concrete doesn’t bond effectively with existing material. Using techniques like epoxy injection and bonding agents, we repair and reinforce these vulnerabilities to ensure strength and stability.

Dusting and Surface Disintegration

Weak concrete mixes or improper finishing can lead to dusting and surface wear. Our surface treatments, including overlays and sealants, effectively restore durability and enhance aesthetics.

Chloride and Carbonation Damage

Environmental factors like chloride ingress and carbonation can corrode reinforcements and weaken concrete. We mitigate these issues with protective coatings, sealants, and advanced treatment methods.

Our Comprehensive Concrete Repair Services

At Entekra, we employ advanced techniques and materials to deliver effective and lasting solutions for all types of concrete issues:

Structural Repairs: Addressing compromised structural elements to restore strength and safety.
Joint Repairs: Reinforcing and sealing expansion and control joints to prevent water ingress and movement-related damage.
Protective Coatings: Applying high-performance coatings to safeguard against water, chemicals, and environmental stressors.
Resurfacing: Revitalising worn or damaged surfaces with durable overlays that improve functionality and appearance.
Non-Invasive Repairs: Minimising disruption with techniques like crack injections, surface sealing, and targeted reinforcements.

The Entekra Advantage: Why Choose Us?

With years of experience and a commitment to excellence, Entekra is your trusted partner for concrete repair and remediation, offering expertise backed by technical knowledge and innovative methods, tailored solutions to meet specific challenges, proven high-performance materials, non-invasive techniques that minimise disruption, and long-term results ensuring your concrete stands the test of time.

Contact Entekra for Lasting Concrete Solutions

Don’t let concrete issues compromise the safety or functionality of your structures. Entekra’s expert team is here to provide high-quality repair and remediation services that safeguard your investment. Contact us today to schedule a consultation and discover how we can enhance the durability and performance of your concrete. Your satisfaction and safety are our top priorities.

COMMON CONCRETE ISSUES REQUIRING REMEDIATION

01 DUSTING

Concrete dusting is a loose powder that forms on the top of a hardened concrete surface, as the concrete disintegrates. It starts when the laitence or cream begins breaking down due to too much water in the concrete mix or overworking the surface. It can also occur when chemical spillages or carbonation have occured which results in weakened concrete. Concrete breaks down due to a weakness in the surface, water ingress, carbonation, chemical attack, alkali silica reation and many other things. Concrete Dusting can be treated with the application of a colloidal silica penetrating treatment that reacts with the calcium in the concrete, creating a permanent gel which fills the concrete capillaries or porosities slowing or halting the concrete deterioration process.

02 WATER INGRESS

Water ingress is a the leading cause of most concrete related issues it leads to internal reinforcement deterioation which in turn causes spalling or as some call it concrete cancer. It is extremely important to halt water ingress within concrete as it acts as a carrying agent for many impurities as it draws deeper into the concrete structure. As the groundwater puts gravitational pressure on the structure from the water table on the outside of the structure, water finds its way into the structure via any small crack and also porosities within the concrete. Porosities in concrete occur when the concrete initially cured. To halt or slow water ingress we use a concrete treatment system that eliminates the problem from the negative side. The system works its way through the concrete filling the concrete pores which in turn halts or slows the groundwater seeping into the structure.

03 INTERNAL REINFORCEMENT CORROSION

Internal reinforcement corrosion occurs because of water ingress. Corrosion of steel reinforcement is the leading cause of deterioration in concrete structures. As the steel embedded in the concrete corrodes, it expands causing damage to the concrete structure. Moisture travelling in and out of the capillary pores in the concrete draw in contaminates which cause the steel reinforcing to corrode within the structure. To prevent the corrosion from progressing, we must apply a concrete treatment that enters the pores, reacts with the calcium causing a hydrogel, this blocks moisture from entering the concrete structure, and deals with the moisture within the structure. The hydrogel on its own is not always the complete solution to the situation, in cases where the corrosion has advanced, and the structure has deteriorated significantly, then other methods will be needed to repair the structure before the treating can take place.

04 SPALLING OR CONCRETE CANCER

Spalling or Concrete Cancer is caused when the steel reinforcing is subject to water ingress, when the reinforcing rusts it expands putting pressure on the concrete until it eventually gives way and cracks. Spalling is the deterioration of steel reinforced concrete, often appearing as cracks, and red rust blooms. In some situations whole sections of concrete can delaminate and fall away from the reinforcing steel work. Spalling is often referred to as concrete cancer, as the problem is not obvious initially. As the problem increases, the treatment becomes more difficult and costly. Concrete spalling, if left untreated, can progress, becoming much worse, and can cause the concrete structure to become unstable. The most common cause of concrete spalling is carbonation. This is a chemical reaction between the carbon dioxide(CO2) in the air and the calcium in the concrete, causing the steel reinforcing to corrode. As the steel reinforcing corrodes, it can expand up to ten times its original volume exerting stress on the concrete around it. Treating concrete spalling depends on the extent of the damage, and can range from surface reconstruction to simply a liquid applied penetrating sealer if it is caught soon enough.

05 CRACKING

Concrete cracking, isn't aesthetically pleasing, and can be the result of various circumstances. Common types of concrete cracks are, shrinkage cracks, expansion cracks, settlement cracks, heaving cracks and excessive weight cracks. Concrete cracks allow contaminates to penetrate the concrete, allowing for faster deterioration. Treating concrete cracks is determined by the extent, and type of the cracking. The process begins by correctly preparing the affected area, filling the crack with the correct product, followed by a concrete treatment that reacts with the calcium in the concrete to help prevent further cracking from occuring. Large cracks in concrete require crack injection. Crack injection is an extensive process where an epoxy or polyurethane is pumped into the crack under pressure to fill any voids within the crack and bind the two seperated faces to each other. Crack injection with the correct injection material can also be utilised to halt water ingress above and below the water table.

06 CARBONATION

Concrete carbonation is a complex physical and chemical reaction between hydration products of cements and CO2. Concrete carbonation results in a decrease of the pH within the concrete structure, decomposition of hydration products, depassivation of deactivated film of reinforcing bar and cracking of the concrete cover. Therefore, concrete carbonation is a serious problem for the durability of concrete structures. To stop the carbonation, we need to eliminate the moisture movement within the structure. We use a spray applied concrete treatment that reactively progresses through the concrete structure, forming a hydrogel that blocks and fills the capillary pores in the concrete.

07 CHLORIDE ATTACK

Chlorides are reactive chemicals which enter the concrete via the movement of moisture in and out of the capillary pores. Chlorides are typically found in salt water, putting marine structures at a higher risk. The mixture of chlorides and oxygen reach the embedded steel causing electrochemical corrosion in the rebar. This reaction will cause the concrete to break down at a faster rate then planned for. To halt the chloride attack from progressing in the structure, we must prevent the movement of moisture within the structure itself. To do this we use a concrete treatment system that penetrates the concrete pores, deals with the moisture within the structure, and prevents outside moisture from entering.

A CONCRETE REMEDIATION PROJECT

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CONTACT US

For any enquiries or to discuss your concrete and steel remediation needs, please don't hesitate to reach out to us. Fill out the form below.

07 4670 9898

INFO@ENTEKRA.COM.AU