alkali content

USAGE SUMMARY

The phrase "alkali content" is correct and usable in written English.
It can be used when discussing the amount of alkali present in a substance, such as soil, water, or food products. Example: "The alkali content of the soil affects its suitability for growing certain crops."

✓ Grammatically correct

Science

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

Chemically, the lamprophyres are unique because of their low silica content and a high iron, magnesium, and alkali content.

Britannica

Then, a long-term durability indicator of concrete could be the coal fly ash alkali content.

Materials Letters

The test results showed that when the alkali content of cement was higher than 0.70%, the workability of HPCMs decreased significantly as the alkali content increased.

Construction and Building Materials

Alkali leaching was found to be very low (8 10% Na2Oeq leached) and little affected by concrete alkali content.

Construction and Building Materials

The setting time, workability, compressive strength, (SiO2 + Al2O3)reactive content and free alkali content of cured cement samples were determined.

Construction and Building Materials

The results showed that the expansion increased with the total equivalent alkali content of the specimens.

Construction and Building Materials

Among the activator parameters, the alkali content was observed to be most influential.

Construction and Building Materials

NaOH is used to increase alkali content of cement to 1.0% Na2Oeq.

Construction and Building Materials

Furthermore, while decreasing crack tendency was noted as alkali content increased from 0.4 to 0.8% by mass of cement, further increases in alkali content caused significant decreases of compressive strength and slump; thereby lowering overall concrete performance.

Construction and Building Materials

It was found that [OH−]pore was proportional to the cement equivalent alkali content but relatively insensitive to the concrete water-to-cement ratio.

Cement and Concrete Research

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

Silica refractories are made from quartzites and silica gravel deposits with low alumina and alkali contents.

Encyclopedia Britannica

Expert writing Tips

Best practice

When discussing the impact of "alkali content" on material properties, quantify the content using appropriate units (e.g., percentage, kg/m3, Na2Oeq) to provide precise and actionable information.

Common error

Avoid assuming a uniform effect of "alkali content" across all materials. The impact varies significantly depending on the type of alkali, the presence of other compounds, and environmental conditions. Always specify the context.

Linguistic Context

The phrase "alkali content" primarily functions as a noun phrase, acting as the subject or object in a sentence. It refers to the quantity or proportion of alkali substances present in a material or substance, as demonstrated by Ludwig's examples involving cement, concrete, and geological samples.

Expression frequency: Very common

Frequent in

Science

85%

Encyclopedias

10%

Formal & Business

5%

Less common in

News & Media

0%

Social Media

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "alkali content" is a frequently used term, particularly within scientific and technical fields, to denote the amount of alkali present in a substance. As Ludwig's analysis confirms, its grammatical status is correct, and it appears most commonly in the context of science and encyclopedias. Understanding the nuances of "alkali content" is crucial, especially when assessing material properties and potential reactions, such as the alkali-silica reaction in concrete. Remember to quantify the content with precise units and to avoid overgeneralizing its effects across different materials. Furthermore, bear in mind other terms like "alkaline level" or "alkali concentration" may be used as alternatives depending on the specific meaning you want to convey.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

alkaline level

Focuses on the level of alkalinity rather than the specific content.

alkali concentration

Emphasizes the concentration of alkali in a solution or mixture.

level of alkalinity

Specifies the measured degree of alkalinity.

alkalinity

Refers to the quality or state of being alkaline.

amount of alkali

Directly refers to the quantity of alkali present.

base content

A more general term for the presence of basic substances.

alkaline composition

Describes the makeup or components that contribute to alkalinity.

alkali proportion

Highlights the ratio or percentage of alkali present.

caustic concentration

Specifically refers to the concentration of caustic alkalis.

alkaline strength

Indicates the degree or intensity of alkalinity.

FAQs

How is "alkali content" measured in cement?

The "alkali content" in cement is typically measured as the equivalent sodium oxide (Na2Oeq) content, which accounts for both sodium and potassium oxides. This value is crucial for assessing the potential for alkali-silica reaction (ASR).

What are the effects of high "alkali content" in concrete?

High "alkali content" in concrete, especially when combined with reactive silica, can lead to alkali-silica reaction (ASR), causing expansion and cracking. This can compromise the structural integrity of the concrete.

How can I reduce the risk of ASR when using cement with high "alkali content"?

To mitigate ASR risk, use supplementary cementitious materials (SCMs) like fly ash or slag, which can reduce the availability of alkalis. You can also use lithium compounds or select non-reactive aggregates. Consider using a cement with a lower "alkali content".

What's the difference between "alkali content" and alkalinity?

"Alkali content" refers to the amount of alkali metals (sodium, potassium, etc.) present in a substance, while alkalinity is the measure of a water's ability to neutralize acids. They are related but distinct concepts; high "alkali content" can contribute to alkalinity in aqueous solutions.