exp05 and 06 and 07 - marshall test method

7/24/2019 Exp05 and 06 and 07 - Marshall Test Method

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Evaluation Form

Jordan University of Science and TechnologyDepartment of Civil Engineering

Course No.: CE 441 Student Name:

Course Name: Pavement Lab Student No.:Topic: Marshall Test Method. Lab. No.: ! "! #.

$ue $ate:

Section: %

$a&: monda&.

Evaluation ElementsPointsValue

Points Received

1 ! " #

1$ Title Page #

$ %&stract #

!$ 'ntroduction #

"$ (&)ectives #

#$ *aterial Used #

+$ ,a&oratory -or. #

/$ Results and Discussions 0

$ Conclusion 102$ %c.no3ledgement 44

10$ References #

11$ Ta&les 3ith Titles #

1$ 5igures 3ith Captions #

1!$ %ppendi6 #

1"$ Spelling7 Punctuation 8Clarity Sentences

10

1#$ (verall Effectiveness 85ormatting

10

Total 100

$

0

0


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Marshall Test Method:

A. Preparation of Aggregate.

B. Preparation of 12 samples.

C. Find Stability, Flo, Air !oids, !oids of Mineral Aggregate "!MA#, $nit

%eight, Stiffness.

Abstract:

This e'periment is conducted to (ind out the )ptimum *sphalt Content that+ill produced the ma' values (or the needed properties (or the mi'ture that +illbe used in some hi,h+a& construction as a +earin, course. Some o( theseproperties are: Stabilit&! -lo+ and *ir oid. Marshall $esi,n Method +ill be used+hich is used +idel& in the +orld.

The Marshal Method starts +ith preparation the test specimens! +hichre/uired the material proposed (or use meet the re/uirements o( the pro0ectspeci(ications! the a,,re,ate blend combinations meet the ,radationre/uirement o( the pro0ect speci(ications (or use in densit& and voids anal&sis!the 2ul3 Speci(ic ravit& o( all a,,re,ate used in the blend! and the Speci(icravit& o( the *sphalt Cement are determined. See table 5*617 (or *,,re,atepreparation and anal&sis! +here the a,,re,ate and the asphalt +ill be mi'edand (illed in the standard mold compacted! then these compacted specimen+ill be tested (or -lo+ and Stabilit&.

Introduction:

The Marshall Test is the most (amous method (or desi,nin, the Pavin,Mi'tures. The *merican Societ& (or Testin, and Material 5*STM7 hasstandardi8ed the Marshall Test procedure.

The main ob0ective o( this test is to (ind the *sphalt Content in blends!+hich satis(& the optimum values (or some o( the mi'ture properties.

$e(initions related to this e'periment are:6

Stability99t is the ma'imum load resistance in Ne+ton 5lb.7 that

the standard test specimen +ill develop at 5"oC7 +hen tested asoutlined hereina(ter.

Flow:the total movement or strain! in units o( .% millimeter!

occurrin, in the specimen bet+een no load and ma'imum loaddurin, the stabilit&.

Theoretical maximum specific gravity of bituminous paving

mixture (Gmm):The ratio o( the +ei,ht in air o( non6compacted

pavin, mi'ture at a stated temperature to the +ei,ht o( the samevolume o( ,as (ree distilled +ater.

1

1


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Bulk specific gravity of compacte bituminous mixture (Gmb):

The ratio o( the +ei,ht o( compacted pavin, mi'ture at statedtemperature to the +ei,ht o( e/ual volume o( ,as (ree distilled +ater.

!ffective specific gravity of total aggregates (Gse):the ratio o(

the +ei,ht in air o( a unit volume o( permeable material 5e'cludin,

voids permeable to asphalt7 at a stated temp to the +ei,ht in air o(e/ual densit& o( an e/ual volume o( ,as (ree distilled +ater.

Bulk specific gravity of total aggregates (Gsb):the ratio o( the

+ei,ht in air o( a unit volume o( permeable material 5includin, voidspermeable and impermeable normal to the materials7 at a statedtemp to the +ei,ht in air o( e/ual densit& o( an e/ual volume o( ,as(ree distilled +ater.

"ir vois ("#$ %):the total volume o( small poc3ets o( air bet+een

coated a,,re,ate particles throu,hout the compacted pavementmi'ture. E'pressed as percent o( the bul3 volume o( the compacted

pavin, mi'ture. $ois of mineral aggregates ($#"%):the volume o( inter6

,ranular void space bet+een the a,,re,ate particles o( a compactedpavin, mi'ture that includes the air voids and the e((ective asphaltcontent! e'pressed as a percent o( the total volume o( the sample.

!ffective asphalt content ('be):the total asphalt content o( a

pavin, mi'ture minus the portion o( asphalt that is lost b& absorptioninto the a,,re,ate particles.

;ere are some e/uations that +ill be used in this e'periment:

EDA

AG

PPPG

mm

G

P

G

P

G

Pbam

amfafaaca

+=

++++=

=

=

+=

=

ei,ht6*irin>ei,ht*irin>ei,ht4

2

2


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Objectives:

97 The overall ob0ectives o( the e'p. 9s to be (amiliar +ith this t&pe o(e'periment and to determine an economical blend and ,radation o( a,,re,ate.

*nd asphalt that &ields a mi' havin,:17 Su((icient asphalt to ensure a durable pavement.%7 Su((icient mi' stabilit& to satis(& the demands o( tra((ic.


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. The a,,re,ate sample +as put in a pan and mi'ed until a homo,eneousa,,re,ate blend &ield.

". Put the a,,re,ate on a heater! a hole +as made at the center o( thea,,re,ate.

#. The asphalt added at the hole! accordin, to the +ei,ht speci(ied (or each

,roup 5roup 9 54G7! roup 99 5G7! roup 999 5"G7! roup 9 5#G77.H. The asphalt mi'ed +ith the a,,re,ate usin, a lar,e spoon until the mi'turebecomes homo,eneous.

I. Put a (ilter paper at the bottom o( the mold 5in order to ta3e o(( the e'cessamount o( asphalt put on the sample and not coverin, the a,,re,ate7.

1. The mi'tures +as put in the mold a(ter appl&in, some oil on the interiorsur(ace o( the mold! add a (ilter paper on the bottom o( the mold. Put themi'ture inside the mold +ith mi'in, and compactin, +ith a spoon 5in ordernot to cause an& se,re,ation7.

11. Put the Marshall ;ammer on the mold! and starts the compaction:

5ei,ht o( ;ammer 1H lb7.

1rite the number o( specimen on it and let it cool at room temperature.1". The specimen +as put in the (lo+ stabilit& machines! and turn on the

machine! +hich +ill dra+ a (lo+ stabilit& curve (or the specimen.

C$ Testing *arshall Specimens9

1. The samples are +ei,hed in air to the nearest 5.1 ,m7! and the readin,sare put in Column 4 in Part 1.

%. The samples are put in the +ater (or minutes +ith 5%oC7! then thesamples are ta3en out o( +ater rapidl& and +ei,hed in air! then the readin,sare put in Column " in Part 1.


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Results:

roup 9: 5sb%.4 7 K 5mm%.11#7 K 5mb%.17.

roup 99: 5sb %.47 K 5mm


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sbK mmK mb+as ri,ht! +hich re(ers that the errors did not a((ect themlar,el&! but it lar,el& a((ect on the percent o( void.

The values at )ptimum *sphalt Content sho+n in 5Part "7! sho+s that theStabilit& and oids in mineral a,,re,ate 5M*7 achieve the speci(ications! +hile

the air voids and (lo+ didnBt achieve the speci(ications due to the errors o( thee'periment.

The errors in this e'periment can be summari8ed as the (ollo+in,:1. The ma0or source o( errors is due to the de(icient number o( blo+s! +hich

,ive hi,her voids than it should be.%. Mista3es in preparin, the a,,re,ate samples.


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'ables:

Table 517: *,,re,ate Si8e $istribution

SieveSi;e

exp05 and 06 and 07 - marshall test method

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