1 Scope
This document is applicable to sprayed concrete to be used for repair and upgrading of structures, for new structures and for strengthening of ground.
This document covers:
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— classification related to consistence of wet mix;
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— environmental exposure classes; young, hardened and fibre reinforced concrete;
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— requirements for constituent materials, for concrete composition and for basic mix, for fresh and hardened concrete and all types of fibre reinforced sprayed concrete;
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— specification for designed and prescribed mixes;
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— conformity.
This document is applicable to wet mix as well as dry mix sprayed concrete. The substrates to which sprayed concrete can be applied include:
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— ground (rock and soil);
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— sprayed concrete;
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— different types of formwork;
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— structural components constituted of concrete, masonry and steel;
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— drainage materials;
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— insulating materials.
Additional or different requirements may be needed for applications not within this
document, for instance-refractory uses.