Assertion: mix | /r/CapableOf | add small fibres of ppp[citation
Facets:
value: to improve surface durability
type: PURPOSE
Source sentences:
text: Admixtures can be used to reduce water requirements, entrain air into a mixture, add small fibres of PPP[citation needed] to improve surface durability, or even superplasticise concrete to make it self-levelling, as self-consolidating concrete, but the use of admixtures requires precision in dosing and mix design, which is more difficult without the dosing/measuring equipment and laboratory backing of a batching plant, which means they are not easily used outside of ready-mixed concrete.