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Allentown Portland Cement Company ended in 1960.
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When did Allentown Railroad end?
Allentown Railroad ended in 1945.
When did Allentown Jets end?
Allentown Jets ended in 1981.
What is sulphur concrete?
Ordinary portland cement based concrete consists of a mixture of aggregates bound together with portland cement. In the presence of water a chemical reaction takes place and the portland cement is hydolysed. At the end of this chemical reaction the cement becomes hard and binds the aggregate particles together.Sulphur concrete is composed of a similar mixture of aggregates, however, and this is the big difference, there is no portland cement involved. Instead the aggregate mixture is bound together by molten sulphur at elevated temperatures. Upon placing, the sulphur concrete is allowed to cool and as it cools the molten sulphur becomes a solid again binding the aggregates together imparting rigidity to the concrete mix.Because sulphur concrete contains no alkaline materials, unlike portland cement mixtures, it is very much more resistant to acid attack and thus finds favour in industry where acid resistant concrete is desirable.
When did Portland Speedway end?
Portland Speedway ended in 2001.
When did Portland Fire end?
Portland Fire ended in 2002.
When did Portland Breakers end?
Portland Breakers ended in 1985.
When did Portland Indians end?
Portland Indians ended in 1948.
When did Portland LumberJax end?
Portland LumberJax ended in 2009.
When did Portland University end?
Portland University ended in 1900.
When did Portland Grand Prix end?
Portland Grand Prix ended in 2006.
When did Portland Branch Railway end?
Portland Branch Railway ended in 1965.
When did Grand Prix of Portland end?
Grand Prix of Portland ended in 2007.
