Environmentally friendly, customised sprayed concrete

TL;DRAbstract

The quality of structural shotcrete or sprayed concrete depends not only on the Same factors as conventional structural concrete, but also on other placement-related issues such as pumping or spraying. Although today's primarily prescriptive design and control tools guarantee quality to some extent, the results are uncertain and mix design procedures do not provide sound information, a priori", on mechanical properties or durabllity. Nor does this approach contribute to design or produce sprayed concrete with and improved environmental profile. This chapter shows how the' use of a Performance-Based Approach (PBA) to structural sprayed concrete design and characterisation has led to greater homogeneity and íncreased efficiency while using less energy-intensive cements and almost any type of aggregate. Customised sprayed concrete is assessed on the grounds of performance índicators, some of which are fairly innovative. The results prove the feasibility of tailoríng structural sprayed con

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