Assertion: concrete's material | /r/HasProperty | portland cement
Facets:
Source sentences:
text: The total quantity of cementitious materials (portland cement, slag cement, pozzolans) can affect strength, water demand, shrinkage, abrasion resistance and density.
text: Most repair materials today are polymer-modified concrete, meaning that the basic material is a portland cement and aggregate mixture with a polymer (typically latex) added.