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Mortar Penetration Resistance Apparatus (H-4137) 

                     

                                   Page 4 of 6 

Instruction Manual          Rev.0; August 14, 2003

 

Copyright 2003 Humboldt Mfg. Co., Norridge, IL. 60706, U.S.A. 

All rights reserved. Printed in U.S.A.

 

6.3 Insert a needle of appropriate size in the apparatus and bring the bearing surface 

of the needle into contact with the mortar surface. Gradually and uniformly apply 
a vertical force downward on the apparatus until the needle penetrates the mortar 
to a depth of 1 inch (25mm) as indicated by the scribe mark read at top of slide. 
The time required to penetrate to the scribe mark shall be approximately 10 
seconds. Record the force required and time of application, measured as elapsed 
time after initial contact. In subsequent penetration tests, avoid areas where 
mortar has been disturbed by previous tests. Distance between impressions 
should be at least two (2) diameters of the needle used, but not less than  ½ ”  
(13mm) and at least 1” (25mm) from the side of the container being used. 

6.4 Make penetration tests at hourly intervals for normal mixtures and normal 

temperatures. The initial test being made after an elapsed time of 3 to 4 hours. In 
some instances, the initial elapsed test times maybe increased or decreased. 

 

6.5 Not less than six (6) penetration determinations should be made in each rate of 

hardening test. The time intervals between penetrations resistance determinations 
shall be such as to give a satisfactory rate of hardening curve. Continue test until 
one penetration resistance of at least 4,000 psi (27.6 mpa) is reached. 

 

7. Calculation 

 

Calculate the penetration resistance, in pounds per square inch, or mega Pascal, as the 
force required to cause a 1" (25mm) depth of penetration of the needle divided by the 
area of the bearing face of the needle. 
 

8. Replacement Needles 

 
     Needle Size 
 
 Model No.    Square Inch    Square MM

 

  
 H-4143.1 1 645  
 H-4143.50 ½ 323 
 H-4143.25 ¼ 161 
 H-4143.10 1/10 65 
 H-4143.05 1/20 32 
 H-4143.025 1/40 16   

 
 
 
 
 
 
 
 
 

Содержание H-4137

Страница 1: ...ved Printed in U S A Manufactured by Humboldt Mfg Co 7300 West Agatite Avenue Norridge Illinois 60706 U S A Customer Service Tel 1 708 456 6300 Fax 1 708 456 5412 Email hmc ehumboldt com USA Toll Free 1 800 544 7220 Website www humboldtmfg com Sold and Serviced by Humboldt and Authorized Dealers Worldwide H 4137 Instruction Manual MORTAR PENETRATION RESISTANCE APPARATUS ...

Страница 2: ...Copyright 2003 Humboldt Mfg Co Norridge IL 60706 U S A All rights reserved Printed in U S A TABLE OF CONTENTS Page 1 Scope 3 2 Assembly 3 3 Preparation of Specimen 3 4 Storage of Specimen 3 5 Number of Specimen 3 6 Procedure 3 7 Calculation 4 8 Replacement Needles 4 9 Warranty 5 10 Drawing Photo 5 6 ...

Страница 3: ...pen end of the spring barrel assembly and tighten the sleeve nut finger tight To install the needle of various end areas screw the needle shank into the tapped hole in the lower end of the spring barrel assembly 3 Preparation of Specimen Prepare sample in accordance with either ASTM C403 or AASHTO T197 specifications 4 Storage of Specimen Store and maintain the specimen at the desired temperature ...

Страница 4: ... diameters of the needle used but not less than 13mm and at least 1 25mm from the side of the container being used 6 4 Make penetration tests at hourly intervals for normal mixtures and normal temperatures The initial test being made after an elapsed time of 3 to 4 hours In some instances the initial elapsed test times maybe increased or decreased 6 5 Not less than six 6 penetration determinations...

Страница 5: ...catalog on Terms and Conditions of Sale The purchaser is responsible for the transportation charges Humboldt Mfg Co shall not be responsible under this warranty if the goods have been improperly maintained installed operated or the goods have been altered or modified so as to adversely affect the operation use performance or durability or so as to change their intended use The Humboldt Mfg Co liab...

Страница 6: ...Mortar Penetration Resistance Apparatus H 4137 Page 6 of 6 Instruction Manual Rev 0 August 14 2003 Copyright 2003 Humboldt Mfg Co Norridge IL 60706 U S A All rights reserved Printed in U S A ...

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