hydration
Placing shotcrete in hot weather can be a risky proposition if you don't follow basic guidelines. Success under these conditions, reports William Drakeley, calls for controlling concrete temperature and mix design while also managing details of the installation and curing processes.
The lessons we've covered in this long sequence of articles have typically revolved around single, key errors and have generally called for commonsense (and often simple) remedies. In the world of pool construction, however, there are situations in which the problems are far more complex, often rising from multiple missteps and clusters of intertwined failures. This is one of those situations, and it has to do with a basic pool/spa combination in a brand-new housing development. Although the pool contractor charged only $35,000 for the installation, the associated legal
Water and cement-based materials interact in so many ways and on so many levels that it's tough to sort everything out. From initial issues of hydration and curing to a range of longer-term, maintenance-related concerns, says chemistry expert Jeff Freeman, cementitious products in submerged environments react so distinctly to water's presence that it is indeed essential for watershapers to consider what's up when putting them together.
