Curb Slipform Machine — YG Export Highway Project Case in Costa Rica

Costa Rica has kept investing in highway maintenance, upgrading, and reconstruction in recent years. Cast-in-place construction of curbs and crash barriers is a regular part of these projects. However, in some mountain road sections, transporting and installing traditional precast curbs has limited efficiency and high labor costs.

A highway contractor in Costa Rica selected the YG-30 curb slipform machine for cast-in-place construction of curbs and crash barriers on a recent mountain highway project. Its tracked chassis, maximum forming height of 1,100 mm, and automatic leveling system match the construction requirements for ramps and tall barriers in this project.

Get a Free Quote

Slipform Curb Machine for Sale Parameters

Model		YG20	YG30
Length*Width*Height		5200*2400*2800mm	5200*4100*2900mm
Unladen mass	About 7000kg	The deadweight is greater, the crawler grip is raised, the construction stability is improved, the climbing and sliding formwork flatness, and the slope is free from interference from external factors
Construction scope		Width ≤ 2000mm (road shoulder, ditch), height ≤ 600mm (kerbstone, curbstone)	Width ≤ 2000mm Height ≤ 1100mm
Hopper volume		1m³	0.5m³
engine	Rated power	65kw	Inline 4-cylinder turbocharged diesel engine (for high altitude areas, increased power output)
	Operating voltage	AC380v
	Startup form	Electric start
	Rated speed	1500rpm
	Heat dissipation form	Water cooling
Molding method	High-frequency vibrator (suitable for plastic concrete)	Formed shoulders and side ditches have higher strength
	Attached vibration motor (suitable for dry, hard concrete)	Can be paved with curbstones and higher curbstone heights
Automatic leveling system (imported DLS, optional)	Leveling range ±40mm	Imported components, temperature compensation, overvoltage, and overcurrent protection
Steering form	Dual automatic steering system (imported DLS, standard)	Imported components, temperature compensation, overvoltage, and overcurrent protection
	Manual steering wheel (hydraulic steering gear)
Minimum turning radius	6800mm
Paving and transfer speed	1m-10m/min	Frequency conversion speed regulation can achieve a wide range of stepless adjustment of paving and transfer speed
Travel drive form	Full-time four-wheel drive	When the road slope is ≤5%, a fully loaded 15m3 tank truck can be used for construction, and the slipform machine connection construction can be realized.
Screw feeder drive type	High torque hydraulic gerotor motor	Ensure the continuous feeding of concrete, the screw feeder will not be stuck by large stones, and the concrete will be mixed twice to improve the workability of the concrete.

Get Selection Advice

Why The Contractor Selected YG-30 Slipform Curb Machine

Project Overview:

• Location: Central Valley of Costa Rica, upgrade and reconstruction project of a provincial mountain road
• Project work: Cast-in-place construction of curb and concrete barrier
• Total construction length: About 28 km (both sides)
• Terrain features: Some sections have longitudinal slopes (max around 5%) and curves

The contractor’s previous construction method:

• Use precast curbs; manually transport and install them
• Daily paving output: about 300–400 m (flat sections)
• Requires 8–10 workers
• Crash barriers need separate formwork and pouring, with many working steps

Practical problems encountered:

• Low efficiency: Multiple steps, including transport, handling, positioning, and joint sealing for precast curbs lead to low overall efficiency
• High labor cost: Many workers are needed for each construction section, and local labor costs keep rising year by year
• Ordinary linear accuracy: Precast parts cannot fully fit the alignment on curved sections and need manual repair
• Complicated crash barrier construction: Traditional formwork pouring needs form removal, curing, and other steps, occupying construction time

Main reasons the client chose YG-30:

• 1,100 mm forming height: Meets the height requirement of crash barriers in this project
• Tracked chassis: Better stability during construction on ramp sections
• Full-time four-wheel drive: Can connect with concrete tank trucks for continuous construction on ramps
• Automatic leveling system: Automatically compensates alignment when slopes and curves change
• Variable frequency speed regulation: Paving speed adjustable from 1–10 m/min to fit different road sections

Core Performance & Technical Features of YG-30 Kerb Machine

Tracked Chassis — Core Advantage for Ramp Construction:

• Heavier overall machine weight and strong crawler grip
• No slipping during ramp construction; stable flatness of slipformed profiles
• Compared with wheeled equipment, no extra braking measures required on 5% slopes

Full-time four-wheel drive:

• Continuous construction allowed on slopes ≤5% under full load
• Directly connects with 15 m³ concrete tank trucks for continuous paving
• Kerb machine connects with tank trucks for construction without material supply interruption

Automatic leveling system (imported DLS):

• Leveling range ±40 mm
• Imported components with temperature compensation function
• Overvoltage and overcurrent protection
• Automatically compensates when longitudinal slope changes on ramps to keep consistent profile alignment

Dual automatic steering system (imported DLS as standard):

• Imported components with temperature compensation
• Overvoltage and overcurrent protection
• Automatically follows road alignment on curved sections
• Equipped with manual steering wheel (hydraulic steering gear) as backup
• Minimum turning radius 6,800 mm

Screw feeder system:

• Driven by high-torque hydraulic gerotor motor
• Guarantees continuous concrete feeding
• Screw feeder will not jam from large stones
• Concrete gets secondary mixing inside the screw to improve workability

Anti-slip self-locking automatic steering slipform:

• No extra braking needed on ramps
• Slipform locks position automatically to prevent sliding downhill

Get Your Best Price

Custom Mold & Optional High-Frequency Vibrator Configuration

Custom Molds: YG curb slipform machine supports custom molds for any curb shape:

• Standard rectangular curb
• Barrier-type crash barrier
• Trapezoidal side ditch
• Curved curb
• Special cross-section shapes specified by clients

Mold configuration for this project: The project includes two cross-section types:

• Standard curb mold: 400 mm height for general road sections
• Crash barrier mold: 1,000 mm height for sections needing barriers

The two sets of molds are custom-made based on cross-section drawings provided by the client and can be replaced on site.

Optional high-frequency vibrator: The client selected the high-frequency vibrator according to the concrete type of the project:

• Applicable concrete: slump concrete
• Effect: Formed road shoulders and side ditches have higher density and strength
• Working principle: High-frequency vibration discharges air bubbles inside concrete for dense forming

Reasons the client chose the high-frequency vibrator:

• Local concrete batching plants in Costa Rica mainly supply slump concrete
• Some sections of the project require certain forming strength and durability
• The high-frequency vibrator delivers good compaction effect on slump concrete

Get a Free Quote

On-site Construction Performance of the Curb Laying Machine

Construction Section 1: Curb on flat sections

• Cross-section type: standard curb, height 400 mm
• Concrete type: slump concrete
• Paving speed: 5–7 m/min
• Construction condition: straight road sections

Performance:

• Stable paving speed around 6 m/min
• Smooth formed surface with no obvious air bubbles or honeycombing
• Direct material supply from tank trucks for non-stop construction
• Daily output about 2,000–2,500 m

Construction Section 2: Crash barrier on ramp sections

• Cross-section type: crash barrier, height 1,000 mm
• Concrete type: slump concrete
• Paving speed: 2–4 m/min (speed reduced on ramps)
• Construction condition: 3–5% longitudinal slope with curves

Performance:

• Tracked chassis works stably on 5% slopes with no slipping
• Automatic leveling system gives real-time compensation when slopes and curves change
• 1,000 mm tall crash barrier formed in one pass
• Daily output: about 800–1,200 m

Construction Section 3: Curved sections

• Cross-section type: transition section of curb + barrier
• Paving speed:1–3 m/min
• Construction condition: continuous curves

Performance:

• Minimum turning radius of 6,800 mm meets curved section construction requirements
• Dual automatic steering system follows curve alignment
• Deviation between formed alignment and design alignment controlled within 5 mm

Efficiency Comparison:

Indicator	Traditional Precast Curb	YG-30 curb slipform machine
Daily output on flat sections	300–400 m	2,000–2,500 m
Daily output on ramp sections	150–200 m	800–1,200 m
Required labor	8–10 workers	3–4 workers
Alignment deviation	10–15 mm	<5 mm
Max forming height	600 mm	1,100 mm

Talk to an Expert

Project Outcomes & Client Evaluation

Project Data:

Indicator	Data
Total construction length	About 28 km (both sides)
Construction period	Around 45 working days
Equipment downtime	2 days (scheduled maintenance)
One-time acceptance pass rate	98%
Labor requirement	3–4 workers per shift

Project Outcomes:

• The 28 km of curbs and crash barriers were finished within 45 working days, slightly ahead of the original schedule
• The one-time acceptance pass rate for linear accuracy and forming quality reached 98%
• 1,000 mm high crash barriers were formed in one pass with no secondary repair needed
• Alignment deviation on curved sections kept within 5 mm

Client Evaluation:

• The tracked chassis of the YG-30 slipform curb machine for sale performs stably on ramp sections — no slipping occurs during construction on 5% slopes
• The 1,100 mm forming height covers the crash barrier requirement of this project — no suitable equipment could complete one-pass forming before
• The automatic leveling system delivers expected compensation when slopes and curves change — linear accuracy is better than the precast solution
• The high-frequency vibrator works well for compaction with local slump concrete — formed surfaces meet strength standards and look smooth
• The two custom molds are easy to replace — switching between curb sections and barrier sections does not take much time

Choose YG Curb Slipform Machine

If you also have cast-in-place construction demands for curbs or crash barriers, the YG kerb machine can customize molds according to your project cross-section shape, adapt to local concrete mix, and provide a full solution including equipment and molds.

What we can do for you:

• Custom slipform molds based on project cross-section drawings
• Recommend vibration methods (high-frequency vibrator / attached vibration motor) according to local concrete type
• Recommend wheeled or tracked chassis based on terrain conditions
• Provide full service from equipment shipment to on-site commissioning