Marine

There are certain situations where the maintenance of a concrete structure becomes a significant ongoing cost and has to be considered frequently. We often talk about the challenges faced by concrete in marine environments. These would be prime specimens: wharf ... Read More

Port Hedland, in Western Australia’s Pilbara region, has an average maximum temperature of 36.7°C in December. In the depths of winter, this maximum plunges to 27.3°C. Minimum averages never reach single digits. Not cool. Not cool for building concrete structures, ... Read More

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It’s no secret that the marine environment is particularly challenging for concrete. Structures in the tide or splash zones are especially vulnerable to ageing. The fluctuating moisture levels aggressively introduce contaminants such as chlorides and sulphates into the matrix of ... Read More

There are, of course, many reinforced concrete structures worldwide, such as bridges and wharves, which are exposed to aggressive chloride environments – and that display evidence of steel corrosion far too soon in their service life. As you are no ... Read More

The question of environmental impact, and environmental sustainability, is extremely significant for marine structures. Waterways are sensitive environmental zones. And there are large numbers of concrete structures which intrude on these zones. If you are responsible for the maintenance of ... Read More

Firstly, what are these two treatments? And why are we comparing them?   A SILANE IS … “Silane” refers to many compounds with four substituents on silicon, including an organosilicon compound. Examples include trichlorosilane (SiHCl3), tetramethylsilane (Si(CH3)4), and tetraethoxysilane (Si(OC2H5)4).” ... Read More

The question of environmental impact, and environmental responsibility, is a major one. Whether you’re working in a sensitive environmental zone, or are concerned about the bigger picture of impact on the planet, we’d like to reassure you of the benefits ... Read More

Chlorides are reactive chemicals which enter concrete with a constant movement of moisture in and out of the capillary pores. Chlorides, together with oxygen, reach the embedded steel and set up electrochemical corrosion in the rebar. Untreated steel corrosion will ... Read More

As you probably know, AQURON penetrating concrete hydrogels are an advanced solution for concrete remediation and durability. AQURON hydrogels penetrate deep into the porosity of the concrete, sealing against the ingress of contaminants, and immobilising moisture-borne reactants. As a long-term ... Read More

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The Port of Auckland is a large container and international trade port on the Waitemata Harbour. Its 55 hectares of wharfs and storage areas are mostly situated on reclaimed land. History Bledisloe Wharf was constructed in the late 1970’s using ... Read More