The influence of different superplasticizers on drying shrinkage of mortar with the same water cement ratio and same sand cement ratio was investigated in this article.

通过试验研究了几种类型的高效减水剂在同样水灰比和砂灰比的情况下对砂浆干燥收缩性能的影响。

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Concrete is a mixture of sand and cement.

混凝土是沙和水泥的混合物。

《牛津词典》

The cement should have the consistency of wet sand.

水泥应当具有湿沙的坚实度。

《牛津词典》

Portland cement is a material that holds together the sand and crushed stone in concrete.

VOA: special.2009.12.01

This process of combining of water, cement paste, sand and rock creates an awful lot of CO2 gases - which are linked by some scientists to global warming - about five to 10% of the world's total emissions.

BBC: By Ian Hardy

That includes aggregates, sand, concrete, asphalt and cement.

BBC: UK economy: Two views of the recession

According to his company's website, Mr Dini's industrial sized 3D printer uses sand and a special binding agent to create a "marble like material" stronger than cement.

BBC: Landscape House