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What is Rilem Test Method

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RILEM tube: measurement of water absorption of masonrywalls

Excerpts from RILEM site

For measuring the rate at which water moves through porous materials such as masonry Rilem Tubes used in the Rilem Test Method 11.4 provides a simple method for measuring the volume of water absorbed by a masonry material within a specified time period. The test can be performed at the site or in the laboratory and can be used to measure vertical or horizontal water transport. Water permeability measurements can be used to assess the degree of weathering that the material has undergone. This testing can also determine the degree of protection afforded by a water repellent treatment.

MEASUREMENT OF WATER ABSORPTION UNDER LOW PRESSURE:

RILEM TEST METHOD NO. 11.4

Introduction

RILEM (Reunion Internationale des Laboratoires D'Essais et de Recherches sur les Materiaux et les Constructions), with headquarters in Paris, is the International Union of Testing and Research Laboratories for Materials and Structures. As with our American Society for Testing and Materials (ASTM), Technical Committees are formed within RILEM to develop standard methods for measuring properties and evaluating the performance and durability of many different buildingmaterials.

One such technical committee, Commission 25-PEM, has developed tests to measure the deterioration of stone and to assess the effectiveness of treatment methods. The standard tests drafted by Commission 25-PEM fall within several categories, including methods for determining internal cohesion (111.), for measuring mechanical surface properties (IV.), and for detecting the presence and movement of water (11.). Within category II., is Test Method No. 11.4, designed to measure the quantity of water absorbed by the surface of a masonry material over a definite period of time.

RILEM Test Method 11.4 provides a simple means for measuring the rate at which water moves through porous materials such as masonry. The test can be performed at the site or in the laboratory and can be used to measure vertical or horizontal water transport. Water permeability measurements obtained in the laboratory can be used to characterize unweathered, untreated masonry. Measurements made at the site (or on samples removed for laboratory testing) can be used to assess the degree of weathering that the material has undergone. Test Method 11.4 can also be used to determine the degree of protection afforded by a water repellent treatment. A description of the equipment and procedure for conducting this test is provided in paragraphs below. The theoretical basis on which the method is based and the several applications of test data are discussed.

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