corresponding to the minimum ASTM recommended rate. . The first-crack strength was computed from ASTM C as follows,. (1) where. This standard is issued under the fixed designation C ; the number ASTM Standards: supports, in contact with the specimen, shall be sufficiently. This standard is issued under the fixed designation C ; the number Referenced Documents ASTM Standards: C Practice for Flexural and.

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The right to access the electronic files of ASTM Standards is for purposes x947 viewing for individual use only. Need more than one copy? In order to assess the effectiveness of the polymers, it was necessary to first build, test and calibrate an in-house test machine, cast and test many, many samples, c9447 the collected data, and finally, interpret those data in order to draw meaningful and helpful conclusions relevant to the concrete countertop industry.

A Control Sample or Control Group must be designed to eliminate these other, non-relevant variables.

ASTM C Flexural Bend Glass Fiber Reinforced Concrete Test Equipment

This standard is not included in any packages. We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and humidity chambers, furnaces, baths and custom solutions for unique applications. Are you sure you want to empty the cart? The Flexural Yield Strength also called limit of proportionality.

All of the samples were tested on the same day: The electronic file may not be reproduced in any way.

Understanding GFRC Tests – Concrete Countertop Institute

Register for a trial account. This is a variable that must be eliminated in any test that is trying to measure other factors such as the effectiveness of wet polymer.

Enter your cc947 email address to request a password reset: While choosing only c47 measure the Flexural Ultimate Strength of GFRC does provide a limited view of the full properties of GFRC, it indicates the absolute strength of the material, something every concrete countertop maker wants to know. By means asmt our concrete testing expertise and modular product design, we will help find the testing solution that is right for you.


We have no document history for this standard. If the adtm to determine whether wet polymers work had used a Control Sample with a 0. One bucket of each mix made two sets of samples:. It allowed CCI to rapidly and inexpensively test a broad range of mix designs and ingredients with the full confidence that the results are real, valid and comparable to those obtained from an independent testing laboratory using far more expensive machinery.

Your Alert Profile lists the documents that will be monitored. ASTM C determines the flexural ultimate strength in bending and the yield strength of glass-fiber reinforced concrete sections by the use of a simple beam of 1. That Control Sample does not eliminate all other variables besides the polymer.

In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise. We have no amendments or corrections for this standard. Search book title Enter keywords for book title search. There were no books found for the applied search filters.

If the document is revised or amended, you will be notified by email. When designing a testing program, first one must determine what exactly is being tested, and eliminate other variables that could confound the test results. Standards Subscriptions from ANSI f947 a money-saving, multi-user solution for accessing standards. This testing procedure is designed to measure and calculate three characteristic properties of the GFRC:.

You may delete a document from your Alert Profile at any time. Please first log in with a verified email before subscribing to alerts. Standards Xstm may be the perfect solution. ANY concrete made with a 0.


No items in cart. The goal of the test was to determine whether dry polymers achieve similar flexural strengths as wet polymers in GFRC. This detailed article explains the context, test procedure, test results, cost analysis and recommendations.

Please sign into an account with a subscription to this content, or email for help at support madcad. Content only available by subscription. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Proceed to Checkout Continue Shopping. Additionally, measuring only the Flexural Ultimate Strength simplified the construction of the machine, as Modulus of Elasticity measurements require a much more expensive machine.

It is well known from decades of research that the addition of wet polymers to GFRC function to eliminate the need for a 7-day wet cure. Please login to your authorized staff account to use this feature.

ASTM grants you a license as follows: Force range of 5 kN to kN 1, lbf tolbf Adjustable test space The most popular choice for static tension and compression tests These dual column testers are available in both tabletop and floor standing models. Yield measures the first cracking of the cement paste.

As the voice of the U. No further reproductions authorized.

ASTM C947 Flexural Bend Glass Fiber Reinforced Concrete Test Equipment

Modulus of Elasticity is a property well known to engineers and is crucial in structural calculations. The machine itself ast also valid for the purpose of testing Flexural Ultimate Strength. The values of flexural properties obtained using ASTM C are useful in quality control, ascertaining compliance, research and development, and product design. This standard is also available to be included in Standards Subscriptions.