ASTM D174-25 Specification for Burlap Saturated with Bituminous Substances for Use in Waterproofing (Withdrawn 1938)

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STANDARD SPECIFICATIONS

F'OR BURLAP SATURATED WITH BITUMINOUS SUBSTANCES

FOR USE IN WATERPROOFING1

Serial Designation: D 174- 25 These specifications are issued under the fixed designation D 174; the final

number indicates the year of original adoption as standard or, in the case of revision,

the year of last revision

Issuao As TnNt'ATtVE, 1923; AooPTRD IN AMENDBD Fonr, 1925

1 These specifications cover bituminized jute fabric, composed Scope

of burlap waterproofed with either asphalt or coal~tar pitch, as speci~

fied by the purchaser, for usc in the membrane system of waterproofing

MANUFACTURE

2 In the process of manufacture the dry burlap shall be Mnte.rial thoroughly and uniformly waterproofed with an asphaltic or coa.J~tar

pitch saturant at a temperature and speed which will not injure the

fabric This shaH be accomplished by passing t.hc fabric through the

saturant and then calendering it in the presence of heat, whereupon it

shall be cooled and wound into rolls

PHYSICAL PROPER TIES

J The fabricated bituminized burlap shall confonn to the fol- Fabricated

(a) The width shall be not less than 30 in nor more than 38 in Burlap

(b) The gross weight per roll shall fall within the range of 35 to

(c;) The wrapping material and mandril shall not weigh more

than 2.5 lb per roll

(d) The average net weight per square yard shall not be less than

20 oz

(e) The detached comminuted surfacing per 100 sq ft shall not

weigh more than 1 lb

U) The moisture content based on the net weight shall not be

more than 1 per cent

'Under the etan<lardiation procedure or th~ &eiety , these spo<:ilications arc under the jurisdiction

oC the A.S.T.M Committee D - 8 on Bituminous Waterproofing nnd Roofin11 Mat.,rillls

(733)

Desaturated

Burlap

Workman·

ship and

Finish

(g) The average strength at 70° F (21.1 ° C.) measured length-wise of the roll (that is, in the direction of the warp) shall not be less than 70 lb.1

(h) The average strength at 70° F (21.1 ° C.) measured crosswise

of the roll (that is, in the direction of th~ filling) shall not be less than

50 lb.l

(i) The pliability at 32° F (0° C.) shall not be less than 10

(j) ':('he average loss on heating (exclusive of moisture) shall not

be more than 4 per cent with asphalt-saturated fabrics

(k) The weight of the saturant contained in the fabricated material shall not be less than twice the weight of the moisture-free fabric in the same area

4 The desaturated burlap shall conform to the following require-ments:

(a) The average dry weight shall not be less than 7! oz per

sq yd

(b) The ash based on the dry weight of the fabric shall not be more than 3 per cent

(c) The fabric shall be composed of not less than 100 per cent jute and manila fibers

WORKMANSHIP AND FINISH

5 The finished material shall be free from visible external defects such as ragged or untrue edges, breaks, rents or cracks

6 The rneshes of the fabric shall not be completely closed or sealed by the process of saturation, but there shall be sufficient porosity maintained to allow successive mappings of the plying cement to seep through

7 The selvage shall not measure over l6 in

8 The roll shall be capable of being unrolled easily at atmos-pheric temperatures above 50° F (10° C.) without sticking together

in such a manner as to injure the fabric

9 The surface of the fabric shall not be coated or covered with talc or other substances which would tend to interfere with the adhe-sion between the fabric and the plying cement The use of silica or wood flour will be permitted

10 The surface shall be uniformly smooth and free from irregulari-ties, folds or knots

SERIAL DESIGNATION: D 174-25 735

PACKING

11 The rolls of treated burlap shall be wound on wooden 2 by Packing

2 in mandrils extending 2 to 4 in beyond the ends of the roll They

shall be securely tied or wrapped in a manner which will prevent

unrolling in transit

SAMPLING AND TESTING

12 The material shall be sampled and the properties enumerated Sampling and

in these specifications shall be determined in accordance with the Testing

Standard Methods of Testing Felted and Woven Fabrics Saturated

with Bituminous Substances for Use in Waterproofing and Roofing

(Serial Designation: D 146) of the American Society for Testing

Materials 1

INSPECTION

13 Inspection of material shall be made as agreed upon by the Inspection

purchaser and seller as part of the purchase contract