And from controlling alkali content, aggregate, admixture and waterproof treatment the prevention measures for alkali aggregate reaction are discussed to raise the durability of concrete.

The effects of alkali content of cement on the fluidity,fluidity loss and setting time of paste added with or without sulphonated naphthalene based superplasticizers(with low or high content of Na 2SO 4)are investigated through experiments.

Predicting leaf nicotine content of flue-cured tobacco using hyperspectral reflectance;

Genetic analysis of nicotine content in DH burley tobacco population

The field trials were done to study on the effects of nitrogen amount on the yield and nicotine content of sun-cured tobacco.

Study on decreasing content of alkali in red mud by chlorination magnesium;

First of all, the content of alkali of.

When the alkali contents in the concrete admixture are determined and the samples are determined by the pre-ignition or the standard addition method,the disadvantages from the matrix can be eliminated and the possible fluctuating results from the reagent shortage in treating the common samples or the contamination and loss of the test liquid in operation can be avoided.

There are three aspects in which the consistency property of cement and admixture is affected,including,first,the cement s mineral composition,state and admixed amount of gypsum functioning as a set-controlling agent,alkali content,fineness of grinding,cement s freshness and temperature and other factors;se.