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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Thank you for the comment! More labs currently use chart recorders. It is highly recommended that laboratories institute a program in which the spray nozzles are switched out with a second set that has been soaking in a mild acid such as vinegar to slow the clogging process. High temperatures can lead to falsely high strength.

Without proper maintenance and upkeep, the misters will begin to drip water on the specimens before clogging entirely. Comment cannot be empty. The Cure for The Cure: Your comment must astmm approved first. Thanks for reaching out to us. Common Errors CCRL inspectors write many findings in their reports on curing facilities and associated records.

While it is nice to be able to have all of the temperature records on a computer, CCRL inspectors report that laboratories using these data loggers often forget to download and evaluate the data.

From Table 1 it looks like it. Login to be able to comment. Can Portland cement grout cubes be cured in a water tank instead of curing cabinet?

Moist cabinets and moist rooms shall be constructed of durable materials with tight-fitting doors or windows for all openings.

In order to maintain aastm extremely humid environment, you must have a good water supply and humidifying equipment, and the temperature must be maintained at Take the time to install insulation, piping, replaceable misters, heating and cooling units, circulators, and temperature recording devices as applicable.

This article can be adtm as a general guideline for curing materials that include Portland cement concrete, masonry mortar, masonry cement, concrete beams, grout, and hydraulic cement see Table 1. Curing facilities, be they tanks or rooms, require lots of documentation. First, heavily consider the placement of your moist room or tanks.


Curing tanks might be a more cost-effective solution, but temperature control can be difficult, and they take up a lot of floor space. The first option is to equip each tank with a temperature recorder that is monitored weekly.

Dry conditions, low temperatures, and abundant fresh water leaching can all c151 to low strength specimens. The temperature of the solution in the tanks must also be monitored. If the calcium hydroxide is disappearing when stirred, the water is not saturated. The size of your room will depend on how much space is available in your lab and how many samples you plan to store. 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 for this item. There is no set lbs of calcium hydroxide per gallon of water.

Most labs that choose c151 method use a fish pond circulator. Essentially, your tanks need to be made of a non-corroding material like thick plastic or metal.

Requirements for Curing Tanks If your lab chooses to use curing tanks alone not inside a curing roomthe following information should help clarify some of the requirements.

ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, satm or up to date.

The Cure for The Cure: A Guide to ASTM C and Your Curing Facilities

The gold standard for laboratory accreditation in the construction industry. This specification includes the requirements for mixing rooms where paste and mortar specimens are prepared and for moist cabinets, moist rooms, and water storage tanks where paste, mortar, and concrete specimens are stored; intended for use in the testing of hydraulic cements and concretes. 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.


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. Pre-fabricated curing rooms are not on the market, so most labs make their own out of readily available materials. Please type the code above. According to an informal poll of CCRL inspectors, the number of laboratories with curing tanks versus curing rooms is about evenly split.

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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.

Moist rooms can be expensive to build and maintain, but they also hold more specimens, which are easier to organize and locate when placed on shelves.

Depending on the type of material you are working with, 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. Tanks compliant with C will also meet the requirements of C The easiest way to determine this is to add calcium hydroxide to the water and then stir the water.

The adtm in a storage tank shall be saturated with calcium hydroxide to prevent leaching.

It depends on the type of water and what is in the water. They both seem to be equally popular. You may use either a chart recorder or a digital recorder.

Have you ever wondered which option your competitor is using?