Quality of water curing concrete specimens in water tanks
Quality of water curing concrete specimens in water tanks
(OP)
Hi
I have noticed that my firm uses contaminated water for the curing of concrete specimens in water tanks. The water is unusually greenish with organic matter such as larvae or whatever that heck it is . So does it affect the compressive strength in any way ? i am searching the net for something like that but i can barely find anything in this regard
I have noticed that my firm uses contaminated water for the curing of concrete specimens in water tanks. The water is unusually greenish with organic matter such as larvae or whatever that heck it is . So does it affect the compressive strength in any way ? i am searching the net for something like that but i can barely find anything in this regard





RE: Quality of water curing concrete specimens in water tanks
RE: Quality of water curing concrete specimens in water tanks
RE: Quality of water curing concrete specimens in water tanks
http://www.sciencedirect.com/science/article/pii/S...
https://theconstructor.org/concrete/effect-water-i...
http://umpir.ump.edu.my/2400/1/SAKILA_SABRIANI_ANK...
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RE: Quality of water curing concrete specimens in water tanks
RE: Quality of water curing concrete specimens in water tanks
http://www.google.com/url?sa=t&rct=j&q=&am...
RE: Quality of water curing concrete specimens in water tanks
RE: Quality of water curing concrete specimens in water tanks
RE: Quality of water curing concrete specimens in water tanks
RE: Quality of water curing concrete specimens in water tanks
RE: Quality of water curing concrete specimens in water tanks
5.8 Water storage tanks
5.8.1 General
Tanks shall be constructed of non-corroding materials. Automatic control of water temperature at 23 ± 2 °C shall be provided where the tank is located in a room not having the temperature controlled within this range and in any instance where difficulty in maintaining temperatures within the specified range is encountered. With the exception of water storage tanks located in a moist room or moist cabinet, all water storage tanks shall be equipped with a temperature recorder with its sensing element in the storage water.
Alternately, manual temperature readings shall be taken twice daily (e.g., early morning and late afternoon) at least 5 d per week with an accuracy of 0.5 °C. For the purpose of temperature recording, a group of water storage tanks may be considered one tank if the following three conditions are met:
(a) All tanks are interconnected with tubing that allows water to flow between the tanks;
(b) Some means of circulation is provided between the tanks; and
(c) Temperature variation between the tanks shall not exceed 1°C when checked and recorded weekly. The water in a storage tank shall be saturated with calcium hydroxide (high calcium hydrated lime) to prevent leaching of calcium hydroxide from the specimens (Note 2). Water not saturated with calcium hydroxide may affect test results due to leaching of lime from the test specimens and shall not be used in storage tanks. To maintain saturation with calcium hydroxide, excess calcium hydroxide shall be present.
For the purposes of lime saturation to prevent leaching, lime means high-calcium hydrated lime, not calcium carbonate (limestone). The water in the storage tank shall be thoroughly stirred at intervals not to exceed one month to help replace calcium ions that have depleted. Tanks shall be cleaned and refilled with water containing 3 g/L of calcium at intervals not to exceed 24 months (see Note 3).
Dik
RE: Quality of water curing concrete specimens in water tanks