One hectare comprises between 1.2 and 1.6 football pitches, as soccer fields are known in British English. An internationally-sanctioned soccer field is 100 to 110 meters in length by 64 to 75 meters in width, comprising between 0.62 and 0.82 hectares depending on the field. Keep Learning.
From Wikipedia, the free encyclopedia. Alkaliâaggregate reaction is a term mainly referring to a reaction which occurs over time in concrete between the highly alkaline cement paste and non-crystalline silicon dioxide, which is found in many common aggregates.he alkaliâaggregate reaction is a general, but relatively vague, expression which can lead to confusion. More precise definitions include the following: 1  Alkaliâsilica reaction (ASR, the most common reaction of this type); 2  Alkaliâsilicate reaction, and; 3  Alkaliâcarbonate reaction.
PureProÂ® USA Alkaline Filter. The Alkaline filter changes the acidic RO water into a perfect Natural Alkali Calcium Ionized Water. The PureProÂ® Alkaline filter simply gives back minerals such as ionized calcium, magnesium, sodium, potassium ion, which were taken away while purifying the water.he PureProÂ® Alkaline filter is effective and give the water pH value of 8.00~9.50. Produces perfectly ph-balanced alkaline water, helps minimize the fluctuations of your body's pH. Turn acidic drinking water into alkali calcium ion water.