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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Fill the tanks with water that has been saturated with lime awtm hydroxide, a. 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.

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Your review has been submitted successfully. The specified relative humidity in these systems shall be maintained by the use of one or more fog sprays, water sprays, or curtains of water on the inner 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. Tanks c151 available from typical laboratory suppliers, but also from farm supplies, as they can also be used as food and water troughs for animals.

Both curing tanks and moist rooms have their benefits and drawbacks. 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 astmm often forget to download and evaluate the data. To help reduce exposed surface area, try covering the tanks with large pieces of Styrofoam insulation.


This article can be utilized 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. Accidentally draining and overflowing a tank can occur if there is an equipment malfunction.

Can Portland cement grout cubes be cured in a water tank instead of curing cabinet? Moist rooms are made from walk-in refrigerators, atsm shipping containers, or scratch built rooms.

In both moist cabinets and rooms, care must be taken to ensure air-tight seals on doors and walls. It depends on the type of water and what is in the water.

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

The Cure for The Cure: You may use either a chart recorder or a digital recorder. 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. Link to Active This link will always route to the current Active version of the standard.

Have you ever wondered which option your competitor is using? 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. Each laboratory will need to consider the unique requirements of their testing needs when designing and maintaining a curing facility.

Login to be able to comment. Trying to cut corners on curing can produce erroneous test results. No other units of measurement are included in this standard.


There is no set lbs of calcium hydroxide per gallon of water. Water storage tanks shall be constructed of non-corroding materials with provisions for automatic control of water temperature. Tanks near drafty bay doors will also wreak havoc on any kind of temperature control you think you have. It is best to have them inside and against an interior wall. The temperature of the solution in the tanks must also be monitored. Alternatively, you can connect your tanks with tubing, basically creating one large tank see Figure 2.

Digital temperature recorders or data loggers are gaining popularity. Air in moist cabinet or 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.

You’ve already submitted a review for this item. Dry conditions, low temperatures, and abundant fresh water leaching can all astk to low strength specimens. Most labs that choose this method use a fish pond circulator. Tanks also require additional documentation. The requirements for this soaking period are temperature and the use of calcium hydroxide.

If you have more than one tank, you have two options for configuration. Your comment must be approved first.