Humboldt H-4137 User manual

Mortar Penetration Resistance Apparatus (H-4137) Page 1of 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.
Manufactured by:
Humboldt Mfg. Co.
7300 West Agatite Avenue
Norridge, Illinois 60706 U.S.A.
Customer Service:
Tel: [phone]
Fax: [phone]
Email: [email protected]
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

Mortar Penetration Resistance Apparatus (H-4137) Page 2of 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.
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

Mortar Penetration Resistance Apparatus (H-4137) Page 3of 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.
1. Scope
Determines the time of setting of concrete with slump greater than zero by testing mortar
sieved from the concrete mixture. The method is suitable for use only when tests of the
mortar fraction of the concrete will provide the information required. The apparatus can
also be used to determine the effects of variables such as temperature, cement
proportions, additions and admixtures upon the time of setting and hardening
characteristics of concrete. It may also be used as part of performance specifications to
determine compliance with specified time of setting requirements.
2. Assembly
The penetrometer is furnished in a carrying case. To assemble, place the slide indicator
over the graduated shaft. Place the handle on the shaft and tighten in place with the hex
nut. Place the other end of the shaft in the open 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 of test. Prevent excessive
evaporation of moisture. Keep specimen covered with a suitable material such as damp
burlap or a tight fitting, water impermeable cover for the duration of the test, except
when bleeding water is being removed or penetration tests are being made. Specimen
should also be shield from the sun.
5. Number of Specimen
At least three (3) separate batches shall be made for each test condition. One (1) rate of
hardening test shall be made on each batch. An equal number of batches for each
condition shall be made on any given day.
6. Procedure
6.1 Remove bleeding water from the surface of the mortar specimens just prior to
making a penetration test by means of a pipet or suitable instrument.
6.2 Place the container of the specimen on a smooth surface spaced between the feet
of the test operator.

Mortar Penetration Resistance Apparatus (H-4137) Page 4of 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 1645
H-4143.50 ½323
H-4143.25 ¼161
H-4143.10 1/10 65
H-4143.05 1/20 32
H-4143.025 1/40 16

Mortar Penetration Resistance Apparatus (H-4137) Page 5of 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.
9. Warranty
Humboldt Mfg. Co. warrants its products to be free from defects in material or
workmanship. The exclusive remedy for this warranty is Humboldt Mfg. Co., factory
replacement of any part or parts of such product, for the warranty of this product please
refer to Humboldt Mfg. Co. 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.
liability under the warranty contained in this clause is limited to the repair or
replacement of defective goods and making good, defective workmanship.
10. Drawing/Photo
H-4137
CAUTION: Keep hands, clothing and other objects away from
moving parts when the machine is in operation.

Mortar Penetration Resistance Apparatus (H-4137) Page 6of 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.