This standard is issued under the fixed designation C; the number Conversion and rounding given in Standard IEEE/ASTM SI. The intention of this article is to clarify the specifications listed in ASTM C, Standard Specification for Mixing Rooms, Moist Cabinets, Moist. ASTM C Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage. Tanks Used in the Testing of Hydraulic Cements and Concretes.

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The system atm be equipped with a temperature recorder and a reference temperature measuring device that are to be placed practically near to each other. After installing the main room and insulating it, labs need to install misters onto water lines spaced throughout the room. From Table 1 it looks like it. In both cases, extreme care must be taken to prevent water from dripping onto the stored specimens, since lime can leach out and lower the strength.

If you have to install a moist room against an exterior wall, try to give at least 6 inches of dead air space. There is also asttm option of using a smaller moist cabinet for specialized projects rather than building an entire room. Requirements for Moist Rooms If your lab tests a lot of samples or tests a variety of materials, a curing room might be the best choice for you. Essentially, your tanks need to be made of a non-corroding material like thick plastic or metal.

Common Errors CCRL inspectors write many findings in their reports on curing facilities and associated records. Historical Version s – view previous versions asfm standard.

Can Portland cement grout cubes be cured in a water tank instead of curing cabinet?

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In both moist cabinets and rooms, care must be taken to ensure air-tight seals on doors and walls. In the end, remember that no matter how much precision is used to mix your ingredients, your curing methods will impact the strength of the material you are testing.


Maintaining two sets of working spray nozzles will be less time consuming than continuously repairing dripping nozzles, or suffering the satm of improperly cured materials.

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Fill the tanks with water that has been saturated with astj calcium hydroxide, a. The water in a storage tank shall be saturated with calcium hydroxide c5511 prevent leaching.

You may use either a chart recorder or a digital recorder. The temperature of the solution in the tanks must also be monitored. Pre-fabricated curing rooms are not on the market, so most labs make their own out of readily available materials. The benefit of a chart recorder is that the information is readily available and in full view at all times, and labs that use these tend not to get written up for not evaluating the weekly temperature data.

You’ve already submitted a review aztm this item. Each laboratory will need to consider the unique requirements of their testing needs when designing and maintaining a curing facility.

For tank maintenance, you are required to thoroughly stir each tank at least monthly to replace depleted calcium ions. It is the responsibility of the user of this standard to establish appropriate safety and health practices sstm determine the applicability of regulatory limitations prior to use.

Air in moist cabinet zstm moist room shall be saturated with moisture in order to provide specified storage conditions and air temperature shall be controlled with provisions made for heating, cooling, or both. Moist cabinets and moist rooms shall be constructed of durable materials with tight-fitting doors or windows for all openings.

ASTM C Standard

Alternatively, you can connect your tanks with tubing, basically creating one large tank see Figure 2. Depending on the type of material you are working sstm, you should refer to the applicable specification or standard to determine whether you need to maintain tanks or a curing room, or even a tank within a curing room.


Curing tanks might be a more cost-effective solution, but temperature control can be difficult, and they take up a lot of floor space. Importance The importance of having a properly functioning curing facility cannot be overstated.

At least every 24 months, you must clean and refill each tank with calcium hydroxide to saturation. Show oldest on top Show newest on top. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. To help reduce exposed surface area, try covering the tanks with large pieces of Styrofoam insulation.

Without proper maintenance and upkeep, the misters will begin to drip water on the specimens atsm clogging entirely. Tariq – Your QA will be contacting you about this question shortly. More labs currently use chart recorders.

The water should be saturated. If the calcium hydroxide is disappearing when stirred, the water is not saturated. Both curing tanks and moist rooms have their benefits and drawbacks. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Thanks for reaching out to us. This article is aatm an exhaustive account for all mix designs, regional specifications, awtm capabilities of each laboratory.

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