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`(cid:1)(cid:2)(cid:3)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:9)(cid:10)(cid:2)(cid:6)(cid:11)(cid:12)(cid:13)(cid:2)(cid:3)(cid:3)(cid:8)(cid:14)(cid:15)(cid:16)(cid:2)(cid:10)(cid:15)(cid:13)(cid:8)(cid:17)(cid:2)(cid:12)(cid:15)(cid:18)(cid:4)(cid:13)(cid:4)(cid:16)(cid:15)(cid:16)(cid:4)(cid:5)(cid:6)(cid:8)(cid:19)(cid:4)(cid:16)(cid:12)(cid:8)(cid:20)(cid:12)(cid:2)(cid:21)(cid:4)(cid:11)(cid:15)(cid:13)(cid:8)(cid:22)(cid:10)(cid:5)(cid:23)(cid:16)(cid:4)(cid:6)(cid:24)(cid:7)(cid:8)(cid:25)(cid:5)(cid:4)(cid:6)(cid:24)(cid:8)(cid:26)(cid:16)(cid:8)(cid:19)(cid:2)(cid:13)(cid:13)(cid:27)(cid:8)
`(cid:25)(cid:5)(cid:4)(cid:6)(cid:24)(cid:8)(cid:26)(cid:16)(cid:8)(cid:17)(cid:4)(cid:24)(cid:12)(cid:16)(cid:28)(cid:8)(cid:8)
`(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:4)(cid:8)(cid:9)(cid:10)(cid:27)(cid:8)(cid:29)(cid:10)(cid:2)(cid:3)(cid:4)(cid:30)(cid:2)(cid:6)(cid:16)(cid:27)(cid:8)(cid:14)(cid:5)(cid:24)(cid:4)(cid:18)(cid:15)(cid:13)(cid:13) (cid:26)(cid:6)(cid:11)(cid:31)(cid:8)
`
`BLD SERVICES, LLC - EX. 1012
`IPR2014 – 00770
`BLD SERVICES, LLC v. LMK TECHNOLOGIES, LLC
`
`1
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`Lateral Rehabilitation with Chemical Grout
`Doing it well, Doing it right !
`
`UCT 2011
`HOUSTON, TX
`
`Marc A Anctil
`Logiball Inc.
`
`1
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`2
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`

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`Coatings
`
`Sliplining
`
`Mh to Mh
`Linning
`
`Sectional
`Lining
`
`Pipe
`Bursting
`
`Chemical
`Grouting
`
`2
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`3
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`3
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`4
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`Groundwater flows easier in soils which have been disturbed, even if the
`native soil has been used for backfill, leaving our collection systems
`susceptible to heavy flow of groundwater and even more so after rain
`events.
`
`4
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`5
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`Stage 1 Initial defect, but
`sewer remains held in
`position by the surrounding
`soil.
`
`Stage 2 Development of
`zones of loose ground or
`voids caused by the loss of
`ground into the sewer.
`
`Stage 3 Failure of the sewer pipe.
`
`METHODS TO CONTROL LEAKS IN SEWER COLLECTION
`SYSTEMS
`Prepared by C.Vipulanandan, Ph.D., P.E. and H. Gurkan
`Ozgurel (GIGMAT)
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`6
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`6
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`7
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`8
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`(cid:131)
`
`(cid:131)
`(cid:131)
`(cid:131)
`(cid:131)
`(cid:131)
`(cid:131)
`
`The(cid:3)injection(cid:3)of(cid:3)a(cid:3)multi(cid:486)component(cid:3)chemical(cid:3)grout(cid:3)into(cid:3)soils(cid:3)and(cid:3)voids(cid:3)
`around(cid:3)the(cid:3)pipe,(cid:3)liner(cid:3)and(cid:3)manhole(cid:3)structures(cid:3)to(cid:3)seal(cid:3)the(cid:3)leak,(cid:3)stabilize(cid:3)
`the(cid:3)ground(cid:3)and(cid:3)control(cid:3)infiltration.
`Significantly(cid:3)reduces(cid:3)ground(cid:3)water(cid:3)infiltration(cid:3)into(cid:3)sewer(cid:3)systems.
`Stabilize(cid:3)sewer(cid:3)structure(cid:3)backfill(cid:3)and(cid:3)bedding(cid:3)material(cid:3)stopping(cid:3)erosion(cid:3)
`of(cid:3)backfill(cid:3)fines(cid:3)with(cid:3)resulting(cid:3)misalignment.
`Not(cid:3)a(cid:3)structural(cid:3)repair.
`Eliminates(cid:3)exfiltration and(cid:3)cross(cid:3)contamination(cid:3)from(cid:3)sewers(cid:3)into(cid:3)storm(cid:3)
`mains(cid:3)and(cid:3)ground(cid:3)water.
`Seals(cid:3)annulus(cid:3)infiltration(cid:3)in(cid:3)lined(cid:3)pipe(cid:3)systems(cid:3)at(cid:3)lateral(cid:3)cut(cid:486)outs(cid:3)and(cid:3)
`manholes.
`Does(cid:3)not(cid:3)rely(cid:3)on(cid:3)any(cid:3)type(cid:3)of(cid:3)pipe(cid:3)surface(cid:3)preparation(cid:3)for(cid:3)bonding(cid:3)to(cid:3)be(cid:3)
`successful(cid:3)as(cid:3)the(cid:3)seals(cid:3)are(cid:3)achieved(cid:3)from(cid:3)the(cid:3)exterior(cid:3)of(cid:3)the(cid:3)
`structures.
`
`8
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`9
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`Manholes
`
`Mainlines
`
`Laterals(cid:3)
`connections
`
`Acrylamides
`
`Acrylates
`
`Acrylic(cid:3)resins
`
`Urethane(cid:3)gels
`
`Urethane(cid:3)foams
`
`x
`
`x
`
`x
`
`x
`
`x
`
`x
`
`x
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`x
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`x
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`x
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`x
`
`x
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`X(cid:3)*
`
`* Practical limits in sealing distances from the lateral connections
`
`9
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`10
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`11
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`• Cleaning(cid:3)of(cid:3)the(cid:3)mainline sewer.
`• Videotaped CCTV(cid:3)inspections(cid:3)of(cid:3)the(cid:3)mainline &(cid:3)pan(cid:3)&(cid:3)tilt(cid:3)of(cid:3)the(cid:3)lateral.
`• When grouting long(cid:3)distances(cid:3)in(cid:3)the(cid:3)lateral,(cid:3)it is strongly recommended
`to(cid:3)inspect the(cid:3)laterals,(cid:3)either from the(cid:3)mainline or(cid:3)other above ground
`access.
`• Cleaning(cid:3)of(cid:3)the(cid:3)lateral may be required depending on(cid:3)the(cid:3)findings of(cid:3)the(cid:3)
`lateral inspection
`Identification(cid:3)of(cid:3)the(cid:3)diameter of(cid:3)the(cid:3)laterals.
`•
`• Protruding taps of(cid:3)more(cid:3)than 5/8" into the(cid:3)8``mainline must(cid:3)be cut back.
`• Roots &(cid:3)grease and(cid:3)other debris that prevent the(cid:3)passage(cid:3)or(cid:3)seating of(cid:3)
`the(cid:3)packer or(cid:3)lateral bladder must(cid:3)be removed .
`• Bypass pumping:(cid:3)normally not(cid:3)an(cid:3)issue(cid:3)as(cid:3)only inflated for(cid:3)a(cid:3)short(cid:3)period
`of(cid:3)time.
`
`11
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`There are effective tools to clean the laterals from the
`mainline sewer when above ground accesses are
`inexistant.
`
`12
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`13
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`
`Standard cup test for
`gel time verification
`
`Packer /pipe void
`ex: 1/3 gal
`
`Pump delivery system
`ex: 3 gpm
`
`Gel times of the grouts are affected by
`temperature. The colder it is the longer it takes for
`the grout to react & vice versa.
`
`Gel times must also take into consideration the
`void between the packer and the pipe, the
`pumping rate along with desired travel distance of
`the grout.
`
`13
`
`Grout hose
`recirculation when
`necessary
`
`14
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`
`Approximate Void Volumes between the inflated packers in their
`respective pipes and the inside pipe wall when inflated at the
`recommended operating pressures.
`
`Lateral(cid:3)Packer(cid:3)
`Model
`
`Approximate
`Volume(cid:3)of(cid:3)
`void(cid:3)at(cid:3)
`mainline
`
`Approximate(cid:3)
`Volume(cid:3)of(cid:3)void(cid:3)
`in(cid:3)4”(cid:3)lateral(cid:3)
`with(cid:3)4”(cid:3)lateral(cid:3)
`grouting plug
`
`Approximate(cid:3)
`Volume(cid:3)of(cid:3)void(cid:3)
`in(cid:3)6”(cid:3)lateral(cid:3)
`with(cid:3)6”(cid:3)lateral(cid:3)
`grouting(cid:3)plug
`
`Approximate(cid:3)
`Volume(cid:3)of(cid:3)void(cid:3)
`in(cid:3)6”(cid:3)lateral(cid:3)
`with(cid:3)4”(cid:3)lateral(cid:3)
`grouting(cid:3)plug
`
`4.25(cid:486)6(cid:3)201(cid:3)LS
`
`5.5(cid:486)7.5(cid:3)2001LS
`
`6(cid:486)8(cid:3)2001(cid:3)LS
`
`7.25(cid:486)10(cid:3)2001(cid:3)LS
`
`8.5(cid:486)12(cid:3)2001(cid:3)LS
`
`12(cid:486)15(cid:3)2001(cid:3)LS
`
`15(cid:486)18(cid:3)2001(cid:3)LS
`
`17(cid:486)21(cid:3)2001(cid:3)LS
`
`20(cid:486)24(cid:3)2001LS
`
`0.21(cid:3)us(cid:3)gal
`
`2.25(cid:3)liters
`
`0.58(cid:3)us(cid:3)gal
`
`0.53(cid:3)us(cid:3)gal
`
`0.61(cid:3)us(cid:3)gal
`
`0.56(cid:3)us(cid:3)gal
`
`0.53(cid:3)us(cid:3)gal
`
`0.80 us(cid:3)gal
`
`1.46(cid:3)us(cid:3)gal
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`0.6(cid:3)liters /(cid:3)foot
`
`0.9(cid:3)liters/foot
`
`3.6(cid:3)liters/(cid:3)foot
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`0.16(cid:3)us(cid:3)gal(cid:3)/foot
`
`0.24(cid:3)us(cid:3)gal/foot
`
`0.96(cid:3)us(cid:3)gal/(cid:3)foot
`
`01/ 2010
`
`14
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`With the(cid:3)use(cid:3)of(cid:3)a(cid:3)winch(cid:3)and(cid:3)pan(cid:3)&(cid:3)tilt(cid:3)camera,(cid:3)the(cid:3)packer is positioned at(cid:3)
`the(cid:3)first(cid:3)lateral from the(cid:3)downstream manhole.(cid:3)The(cid:3)packer is rotated to(cid:3)
`align the(cid:3)lateral grouting plug with the(cid:3)service(cid:3)connection.(cid:3)Once(cid:3)aligned,(cid:3)
`the(cid:3)packer is rotated and(cid:3)air(cid:3)pressure(cid:3)is used to(cid:3)invert the(cid:3)lateral grouting
`plug from the(cid:3)mainline packer into the(cid:3)service(cid:3)lateral and(cid:3)the(cid:3)mainline
`bladders are(cid:3)inflated isolating the(cid:3)«(cid:3)Tee(cid:3)»(cid:3)or(cid:3)(cid:3)«(cid:3)Wye(cid:3)»(cid:3)section.
`
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`The forward end of the lateral grouting plug expands against the host
`lateral pipe and the remaining portion expands to a predetermined
`diameter creating an annulus between the inflated lateral bladder and
`the inside pipe wall. If no visible leaks are apparent, this area is then air
`tested (See ASTM F2454-05)
`
`16
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`Crucial Information (Void Pressure)
`
`A pressure gauge or transducer connected to the sensor diaphragm outlet port (at
`the packer) will accurately transmit the void pressure and provide the operator and
`inspector with precious information on what is happening beyond their sight (testing
`and grouting pressures of the void). Without this information it is difficult to
`determine when a defect has been sealed without deflating the packer.
`
`Void pressure stable at 6.5 psi
`
`Timer (pressure has been holding
`6.5 psi for 36 seconds)
`
`Gallons of grout pumped
`(effectively sealing lateral
`connection and 30 feet of the
`lateral)
`
`17
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`18
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`19
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`Post grouting mainline view
`of lateral connection.
`
`Post grouting view of lateral
`from pan & tilt camera in the
`mainline.
`
`19
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`20
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`20
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`21
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`21
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`22
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`22
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`23
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`Late
`pum
`out t
`23
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`24
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`Host Pipe
`
`Liner
`
`Cured Chemical
`Grout
`
`Lateral grouting packers can be used to pump chemical
`grout into the annulus and out through the defects of the
`host pipe to stop infiltration from coming back into the
`sewer at lateral connection cutouts.
`
`24
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`25
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`
`(cid:131) Grout(cid:3)travels(cid:3)
`through(cid:3)the(cid:3)
`annulus(cid:3)and(cid:3)
`defects(cid:3)out(cid:3)into(cid:3)
`the(cid:3)soil
`
`25
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`26
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`
`Lateral Connection
`Grouting Capabilities
`
`Mainline diameters from 6”-24”
`with effective sealing distances
`from 8” through 30 feet have
`been done. Diameter of
`laterals 4”, 5” or 6”.
`
`26
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`27
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`
`One of these two laterals needs to
`be blocked off while the other one is
`sealed
`
`Mrs
`Smith
`
`Mrs
`Jones
`
`Mainline pipe
`
`27
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`28
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`28
`
`Only the common trunk
`can be sealed unless it
`can be confirmed which
`direction the lateral plug
`has taken during the
`inversion.
`
`Common
`lateral
`
`Mainline pipe
`
`29
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`
`If a cleanout access is
`available, the rest of
`the lateral could be
`sealed with the use of
`a Flexible Push Packer
`
`In this situation
`the riser pipe
`connection to
`the main can be
`sealed with a
`short lateral
`grouting plug.
`
`Riser
`
`Mainline pipe
`
`29
`
`30
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`
`In some cases it can
`become necessary to
`stage the grout in order
`to obtain a seal, as the
`grout consumption
`becomes very important
`caused by large voids
`behind the structures.
`
`First attempt
`
`Second attempt
`breaking the initial
`seal and forming a
`second layer
`
`Third injection
`breaking through the
`initial layers until a
`seal is achieved
`
`Mainline pipe
`
`30
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`31
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`
`Sealing Laterals from an Above Ground & Manhole Access
`
`In cases where above ground accesses are available, it is
`possible to use a flexible packer to seal leaking joints in
`laterals. These packers have also been used from the
`manholes to seal leaks in laterals that come directly into
`manholes.
`
`31
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`32
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`33
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`33
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`34
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`.
`
`.
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`34
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`35
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`35
`
`36
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`
`STANDARDS & SPECIFICATIONS
`
`ASTM F2414-04
`
`Standard Practice for Sealing Sewer Manholes Using Chemical Grouting
`
`ASTM 2304-03
`
`Standard Practice for the Rehabilitation of Sewers Using Chemical Grouting
`
`ASTM 2454-05
`
`Standard Practice for Sealing Lateral Connections and lines from
`the mainline Sewer systems by the Lateral Packer Method,
`Using Chemical Grouting
`
`Nassco Specification Guidelines
`
`36
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`37
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`• Preparation(cid:3)work(cid:3)(cleaning,(cid:3)cctv,(cid:3)documentation)
`• Most(cid:3)appropriate(cid:3)grout(cid:3)&(cid:3)grout(cid:3)mixture(cid:3)for(cid:3)the(cid:3)job
`• Adapt(cid:3)to(cid:3)existing(cid:3)field(cid:3)conditions(cid:3)(gel(cid:3)times,(cid:3)(cid:3)grout(cid:3)additives,(cid:3)
`pumping(cid:3)rates,(cid:3)stage(cid:3)grouting(cid:3)etc.)
`• Knowledgeable(cid:3)contractor,(cid:3)operator(cid:3)and inspector
`• Pump(cid:3)the(cid:3)quantity(cid:3)of(cid:3)grout(cid:3)that(cid:3)is(cid:3)needed.(cid:3)That(cid:3)extra(cid:3)gallon(cid:3)of(cid:3)
`grout(cid:3)could(cid:3)mean(cid:3)the(cid:3)difference(cid:3)between(cid:3)a(cid:3)permanent(cid:3)vs
`temporary(cid:3)repair.
`• Pump(cid:3)until(cid:3)“refusal”(cid:3)(predetermined(cid:3)pressure(cid:3)or(cid:3)blow(cid:486)by(cid:3)by(cid:3)the(cid:3)
`bladders)
`• Good(cid:3)specifications(cid:3)(ASTM,(cid:3)NASSCO)
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`(cid:131) Sealing(cid:3)at(cid:3)refusal(cid:3)(blow(cid:486)by(cid:3)or(cid:3)8(cid:486)10(cid:3)p.s.i.),(cid:3)as(cid:3)long(cid:3)as(cid:3)the(cid:3)proper(cid:3)
`technique(cid:3)is(cid:3)used,(cid:3)can(cid:3)be(cid:3)a(cid:3)form(cid:3)of(cid:3)verification.
`(cid:131) Random(cid:3)air(cid:3)testing(cid:3)on(cid:3)the(cid:3)way(cid:3)back(cid:3)to(cid:3)the(cid:3)entry(cid:3)manhole
`(cid:131) CCTV(cid:3)inspection(cid:3)after(cid:3)cleaning(cid:3)(post(cid:3)test(cid:3)&(cid:3)seal)
`(cid:131) CCTV(cid:3)inspection(cid:3)approximately(cid:3)11(cid:3)months(cid:3)after(cid:3)completion(cid:3)of(cid:3)work(cid:3)
`preferably(cid:3)during(cid:3)high(cid:3)ground(cid:3)water(cid:3)tables.
`(cid:131) Test(cid:3)10%(cid:3)of(cid:3)the(cid:3)work(cid:3)approximately(cid:3)11(cid:3)months(cid:3)after(cid:3)completion(cid:3)of(cid:3)
`work(cid:3)(failures(cid:3)will(cid:3)be(cid:3)resealed(cid:3)at(cid:3)no(cid:3)expense(cid:3)to(cid:3)the(cid:3)owner).(cid:3)If(cid:3)failure(cid:3)
`rate(cid:3)is(cid:3)higher(cid:3)than(cid:3)5%(cid:3)another(cid:3)basin(cid:3)of(cid:3)similar(cid:3)size(cid:3)will(cid:3)be(cid:3)chosen.
`(cid:131) Keep(cid:3)a(cid:3)mixing(cid:3)&(cid:3)sealing(cid:3)log(cid:3)of(cid:3)the(cid:3)work(cid:3)(grout(cid:3)mix,(cid:3)gel(cid:3)times,(cid:3)
`additives(cid:3)and(cid:3)quantities,(cid:3)grouting(cid:3)&(cid:3)testing(cid:3)pressures,(cid:3)grout(cid:3)
`pumped(cid:3)etc.)
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`Initial(cid:3)mixing of(cid:3)the(cid:3)grout:(cid:3)10%,(cid:3)12(cid:3)%,(cid:3)15%(cid:3)by(cid:3)weight ?(cid:3)Has(cid:3)to(cid:3)take into consideration
`that under active(cid:3)infiltration,(cid:3)dilution(cid:3)will occur with the(cid:3)first(cid:3)few(cid:3)gallons(cid:3)of(cid:3)grout.
`
`Additives are(cid:3)available for(cid:3)specific conditions(cid:3)(reinforcing agents,(cid:3)catalysts,(cid:3)root inhibitors,(cid:3)(cid:3)
`fillers(cid:3)etc.)(cid:3)verify with grout manufacturer.
`
`Gel(cid:3)time(cid:3)vs(cid:3)pumping rate:(cid:3)The(cid:3)gel(cid:3)time(cid:3)must(cid:3)be long(cid:3)enough for(cid:3)the(cid:3)grout to(cid:3)migrate
`through the(cid:3)defects and(cid:3)saturate the(cid:3)soil before it gels,(cid:3)otherwise it may plug up(cid:3)defects
`(pathways)(cid:3)of(cid:3)the(cid:3)pipe(cid:3)prematurely.
`
`Stage(cid:3)grouting:(cid:3)May(cid:3)be necessary where outside voids are(cid:3)large(cid:3)and(cid:3)continuous pumping
`does not(cid:3)provide a(cid:3)seal.
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`Gallons(cid:3)pumped :(cid:3)An(cid:3)attempt should be made(cid:3)to(cid:3)pump 1/3(cid:3)of(cid:3)a(cid:3)gallon(cid:3)of(cid:3)mixed(cid:3)grout per(cid:3)
`inch pipe(cid:3)diameter for(cid:3)mainline to(cid:3)lateral connection grouting (ie:(cid:3)8 inch pipe(cid:3)=(cid:3)2.6(cid:3)gal)(cid:3)+(cid:3)
`one(cid:3)gallon(cid:3)per(cid:3)vertical(cid:3)foot(cid:3)from the(cid:3)connection.(cid:3)That(cid:3)extra(cid:3)gallon(cid:3)of(cid:3)grout pumped,(cid:3)could
`make the(cid:3)difference between a(cid:3)temporary and(cid:3)permanent(cid:3)repair.(cid:3)Sharing(cid:3)the(cid:3)cost of(cid:3)grout
`with the(cid:3)owner has(cid:3)proven to(cid:3)be a(cid:3)responsible way to(cid:3)address bid inbalances.
`
`Grouting pressures(cid:3)as(cid:3)measured at(cid:3)the(cid:3)void :(cid:3)The(cid:3)pumped grout must(cid:3)fight the(cid:3)
`groundwater pressure(cid:3)to(cid:3)get out(cid:3)of(cid:3)the(cid:3)pipe(cid:3)and(cid:3)into the(cid:3)soil.(cid:3)If(cid:3)there is no(cid:3)groundwater
`present ,(cid:3)the(cid:3)rule of(cid:3)thumb is to(cid:3)pump to(cid:3)a(cid:3)pressure(cid:3)that would represent the(cid:3)potential
`groundwater table(cid:3)(approximately 1/2(cid:3)psi(cid:3)per(cid:3)vertical(cid:3)foot(cid:3)of(cid:3)depth above the(cid:3)pipe).(cid:3)Higher
`viscosity materials may require more(cid:3)pressure(cid:3)to(cid:3)find their way through minute(cid:3)cracks(cid:3)or(cid:3)
`openings out(cid:3)into the(cid:3)backfill area.(cid:3)Pump until refusal.
`
`Good(cid:3)Specifications:(cid:3)Standards(cid:3)&(cid:3)specifications(cid:3)are(cid:3)available(cid:3)through(cid:3)ASTM(cid:3)&(cid:3)Nassco(cid:3)
`(National(cid:3)Association(cid:3)of(cid:3)Sewer(cid:3)Service(cid:3)Companies)
`ASTM(cid:3)2454(cid:486)05
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`TIPS(cid:3)FOR(cid:3)SUCCESSFUL(cid:3)PROJECTS
`
`GROUT(cid:3)MIX(cid:3)&(cid:3)
`ADDITIVES
`
`EXPERIENCED(cid:3)
`CREW(cid:3)&(cid:3)
`KNOWLEDGEABLE(cid:3)
`INSPECTOR
`
`GEL(cid:3)TIMES(cid:3)/(cid:3)
`PACKER(cid:3)(cid:3)TO(cid:3)PIPE(cid:3)
`VOID(cid:3)/(cid:3)PUMPING(cid:3)
`RATES
`
`GOOD(cid:3)
`SPECIFICATIONS
`
`SUCCESSFUL(cid:3)
`PROJECTS
`
`LOG(cid:3)BOOK(cid:3)OF(cid:3)THE(cid:3)
`WORK(cid:3)PERFORMED
`
`VOID(cid:3)PUMPING(cid:3)
`PRESSURES(cid:3)
`MEASURED(cid:3)AT(cid:3)THE(cid:3)
`PACKER(cid:3),(cid:3)PUMPING(cid:3)
`TO(cid:3)REFUSAL
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`The pictures below show a 15 inch rcp pipe that was originally
`grouted in 1986 with acrylamide grout. These pictures were taken in
`the summer of 2007 where the water table lies above the crown of the
`pipe showing no infiltration . Residual acrylamide grout can be seen in
`the joint 21 years later.
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`Papers, articles & testimonials from industry leaders &
`publications have been published over the years.
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`It is expected that city sewer systems in North America will continue to
`be prone to infiltration problems due to deteriorated joints even though
`the pipes may remain structurally sound.
`
`Chemical grouting has proven to be the least expensive remediation
`alternative for stopping leaks and infiltration in collection systems.
`
`Chemical Grouting has a 50 year history of sealing leaks.
`
`To date, the only proven method of stopping infiltration is the
`proper application of chemical grouts.
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`Lateral Rehabilitation with Chemical Grout
`Doing it well, Doing it right !
`
`Thank you
`Questions ?
`
`Tel: 800-246-5988
`Tel: 418-656-9767
`www.logiball.com
`info@logiball.com
`
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