Portland cement
noun
Port·land cement
ˈpȯrt-lən(d)- 
variants
or less commonly portland cement
: a cement (see cement entry 1 sense 1b) that sets under water and that is made by finely pulverizing the clinker produced by heating a mixture of clay and limestone or similar materials to a high temperature just short of fusing
Drexel engineers have found a way to improve upon ordinary Portland cement …, the glue that's bonded much of the world's construction since the late 1800s.—
Swiss National Science Foundation
Swiss National Science FoundationOnce the joints are open, refill them with a dry mix of stone dust and portland cement, mixed at a ratio of 1 part cement to 6 parts dust.—This Old House
This Old HouseExamples of Portland cement in a Sentence
Recent Examples on the Web
Ellis said Sublime Systems has done extensive testing on the durability of the product and expects, at scale, to be competitive with traditional Portland cement.
—Diana Olick, CNBC, 10 July 2024
The simple answer is that they are made of typical construction materials such as aggregates – soils and rocks – as well as asphalt binder and Portland cement, which act like glue to bond it all together.
—Mansour Solaimanian, The Conversation, 10 May 2024
Start by mixing equal parts Portland cement, perlite, and peat moss in a large plastic container.
—Kenneth Setzer, Miami Herald, 30 Jan. 2024
Concrete resurfacers are basically Portland cement, sand and polymers.
—Jeanne Huber, Washington Post, 3 Nov. 2023
Most modern concrete starts with Portland cement, a powder made by heating limestone and clay to super-high temperatures and grinding them up.
—Maddie Burakoff, Fortune, 3 Oct. 2023
Concrete is basically a mixture of sand, gravel and Portland cement, plus water to make the mixture fluid enough to form and to trigger the chemical reaction that hardens the cement.
—Jeanne Huber, Washington Post, 22 Sep. 2023
This biochar, created from two different temperatures, was then incorporated in various percentages into Portland cement as a replacement for fine aggregate (in this case natural sand).
—Darren Orf, Popular Mechanics, 24 Aug. 2023
Instead the mixes consist of just gravel and glue, either Portland cement or asphalt.
—Jeanne Huber, Washington Post, 7 July 2023
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Diana Olick, CNBC, 10 July 2024
The simple answer is that they are made of typical construction materials such as aggregates – soils and rocks – as well as asphalt binder and Portland cement, which act like glue to bond it all together.
—Mansour Solaimanian, The Conversation, 10 May 2024
Start by mixing equal parts Portland cement, perlite, and peat moss in a large plastic container.
—Kenneth Setzer, Miami Herald, 30 Jan. 2024
Concrete resurfacers are basically Portland cement, sand and polymers.
—Jeanne Huber, Washington Post, 3 Nov. 2023
Most modern concrete starts with Portland cement, a powder made by heating limestone and clay to super-high temperatures and grinding them up.
—Maddie Burakoff, Fortune, 3 Oct. 2023
Concrete is basically a mixture of sand, gravel and Portland cement, plus water to make the mixture fluid enough to form and to trigger the chemical reaction that hardens the cement.
—Jeanne Huber, Washington Post, 22 Sep. 2023
This biochar, created from two different temperatures, was then incorporated in various percentages into Portland cement as a replacement for fine aggregate (in this case natural sand).
—Darren Orf, Popular Mechanics, 24 Aug. 2023
Instead the mixes consist of just gravel and glue, either Portland cement or asphalt.
—Jeanne Huber, Washington Post, 7 July 2023
Dictionary Entries Near Portland cement
Cite this Entry
“Portland cement.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Portland%20cement. Accessed 28 Nov. 2024.
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portland cement
noun
port·land cement
ˌpōrt-lən(d)-
ˌpȯrt-
: a cement made of clay and limestone
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