●Product drawing
Symmetric

Asymmetric

M-15VK-15V

10101012.5
12.5

1515

15
15

12.5
12.5
12.5

t=1.5
t=1.5
t=1.5

15
15
15

15
15
15

Key features

t=1.5
t=1.5
t=1.5

M-20V

K-20V

15
15
15

15
15

20
20
20

t=1.5
t=1.5
t=1.5

Can control the position where cracks appear

t=1.5
t=1.5
t=1.5

15

t=1.5

Easy to installas it has holes
15

t=1.5
t=1.5

●Material ：PVC
●Length ：2,000㎜●MOQ：100pcs

202020202020Strong, light-weight, and easy to handle
Hole diagramφ2.5㎜ Hole×７2020M-25V

Easy to remove while keeping the joint shape neat

10
Does not absorb
waterand does not deform

t=1.5
t=1.51515

1515151515151515
15

2020201515●Control cracks●Make neat, clean grooves in concrete walls

Version：20231225

1515

MEJIBO / Formwork joint bar

Made in（other than M-25V）

25
25
25

t=2
t=2
t=250pcs（only M-25V）

Version：20231225●Purpose of MEJIBO
To control cracks in concrete and mortar
When concrete or mortar dries・・・<Wall without groove>
Random cracks<Wall with groove>
Cracks form in the groove

Looks BAD

CornerLooks GOOD

CornerOpening

OpeningConcreteConcrete

Joint

Joint

Post

Brick or Block

Brick or Block

Joint

Joint

MortarMortarPost

Version：20231225●Purpose of MEJIBO
To design

GrooveGrooveVersion：20231225●Differences in usage by MEJIBO shape
Applications for Symmetrical products
CASE 1

Concrete and mortar walls generally tend to crack randomly. A groove is provided to control the position where cracks
appear. (Figure 1)

CASE 2Grooves are formed to incorporate designs into relatively simple concrete or mortar walls. (Figure 2)
Corner of opening

Concrete

Joint
Brick or Block

PostJoint

Mortar(Fig 1)(Fig 2)

Version：20231225

Applications for Asymmetrical products
CASE 1

When installing eaves over windows, a groove is provided to prevent rainwater from getting closer the inside throughthe eaves. If there are no grooves, rainwater gets closer to the inside. (Figure 1)

CASE 2

When a mortar wall touches another post or wall, cracks are likely to form at the end. A groove is provided to control
the position where cracks appear. If there are no grooves, cracks occur randomly and looks bad. (Figure 2)

CASE 3

When laying concrete vertically, rainwater can easily enter through the joint. A groove is provided for sealing toprevent rainwater from entering the joint (gap). If there are no grooves, sealing cannot be performed. (Figure 3)

Concrete 2

Eaves

OutsideOutsideWindow

InsidePostorWall(Fig 1)

Edge

InsideMortarJoint(Gap)(Fig 2)Concrete 1(Fig 3)

Version：20231225●Installation（Pre-Installed Method）①Secure the MEJIBO to②Secure to all desired locations③Apply concrete to wall

the plywood with nailsConcrete④Finish by demolding the MEJIBO

Version：20231225●Installation（Retrofitted Method）①Attach the string line at the position where the MEJIBO will be installed.
Cross
section

Front

Installation position

String Line

StringLine

Finishing surface

Wall

①

②Apply mortar to the installation surface to a thickness
that leaves distance of only 10mm from mortar to the string.
Cross
section

SideMortar

10㎜②

Version：20231225●Installation（Retrofitted Method）③Secure the MEJIBO with screws and support it so that it will not fall.
１. In advance, use a drill to make the holes at both ends of the MEJIBO 1~2㎜ larger than the screw diameter.
２. Attach a screw to the wall to support the MEJIBO.

MEJIBO③-1③-2

Make the holes
1~2㎜ larger
than the screwdiameter.

※ Please procure screws on site

Version：20231225●Installation（Retrofitted Method）④Push the MEJIBO to the string.

Cross
section④Side

Push theMEJIBO④

Version：20231225●Installation（Retrofitted Method）⑤After the mortar has cured, remove the string and finish the surface according to the height of MEJIBO.

⑤CrosssectionAlign the mortar
with the surfaceof the MEJIBO.
OKSideNG

Overpaint⑤Version：20231225●Installation（Retrofitted Method）⑥After the mortar has cured, remove the MEJIBO.

⑥-2

１. Pull out the screws.
２. Insert a screw diagonally into the MEJIBO
and pull the MEJIBO out by gripping screw with pliers.
Cross
sectionSide

Pull outthe screw⑥-1

Pull outthe MEJIBO⑥-2

●Finish（Retrofitted Method）

Version：20231225

The appearance of the original small hole

The appearance of the enlarged hole
(Need repair)●Construction example ＜MEJIBO＞■OFFICE（HO CHI MINH／VIETNAM）

Version：20231225

Version：20231225■FACTORY（BA RIA-VUNG TAU ／VIETNAM）