Surface Treatment Solutions of Bohols Provincial Gravel Roads

485.459, 58%

255.999, 31%

91.085, 11%

Road Condition

Good

Fair

Poor

Most Provincial Roads are in good/fair condition ripe for sealing.

Provincial Road Profile

832.544 kms of Provincial Road

170.328 kms (20%) are PCCP Road 29.638 kms (4%) are ACP Road 632.577 kms (76%) are Gravel/Earth Roads

The Goal is.

Upgrade at least 100kms of provincial gravel roads in

1 year instead of 5kms per year

This is how we are going to do it..

Source: Shell

Area High Medium Low

PMD 1 191-3,665 250-660 28-474

PMD 2 479-1,598 231-902 96-495

PMD 3 1,198-3,944 170-865 60-473

Most Provincial Roads have low traffic volume..

80-90% of the traffic is motorcycle

Gravel PCCP SBST DBST Slurry

Seal

(6mm)

Slurry

Seal

(12mm)

Sub-base 748,000 671,000

Modified

Base

1,925,000 1,925,000

Wearing

Course

804,375 7,232,500 1,100,000 2,000,000 1,650,000 3,300,000

Total 1,552,375 7,903,500 3,025,000 3,925,000 1,650,000 3,300,000

Cost Comparison

Our solution is cost-effective for our Gravel Roads

Assumptions:

Length 1 km Width 5.5 m Direct Cost only

Cape Seal Modified Base

+ Slurry Seal

DBST +

Slurry Seal

Sub-base

Modified Base 1,925,000 1,925,000 1,925,000

Wearing

Course 2,750,000 3,300,000 4,950,000

Total 4,675,000 5,225,000 6,375,000

Cost Comparison

Our solution is cost-effective for our Gravel Roads

Assumptions:

Length 1 km Width 5.5 m Direct Cost only

Life Cycle Cost Analysis 10-km Provincial Gravel Road

Length - 5 kms

Vehicles/day - 100

A B C

Length - 5 kms

Vehicles/day - 50

Cheaper than any pavement for 15 years

Low-Cost

Sealing

PCCP Gravelling

Initial

Investment

35, 750,000 79,035,000 15,523,750

Life-cycle

Cost

89,765,015 107,584,457 84,884,176

Cost to Upgrade PRMF-assisted Provincial Gravel Road

Road Section Length

(in kms)

Cost

(in Php

million)

Danao-Mahayag Road 15 103

San Isidro-Catigbian via

Caimbang Road

6 41

Tinago-Biking, Tinago-

Bingag Road

4.4 30

Total 174

VS PCCP of Php 244 million

the cost to seal your PRMF road is

PRNDP 2014-2018 Investments: Php1 billion

Translates to 100kms of sealed road

Remaining 400 kms of Provincial unsealed roads

Additional investments of Php2 billion (2018-2028)

Your goal can become a reality.

Bohol IRA Fund

Php1.14 billion

Bohol 20% Development Fund

Php247 million

Bohol Road Expenditure Envelope

Php140 million

Bohol Road Maintenance Expenditure Envelope

Php18.4 million

There is sufficient budget.

Sealing low volume road is supported by

Asian Development Bank SEACAP Programme in SE Asia Australian Road Research Board AFCAP programme in Africa

Improved sections of Provincial Road caused

88% increase in household incomes from on-farm activities

50% increase from business and trading activities 45% increase from non-farm activities 5% increase from off-farm activities. 34% increase of the incomes of households in treatment

area between the years 2009 and 2011. Increase in habal-habal transportation services thus

multiplying the number of habal-habal drivers in the locality. Competition was beneficial for the riding public because it forces the transportation fares to stay at lower levels.

1 Impact of PRMF gravel roads based on the CIME for Bohol financed by PRMF

Implementation Approach

Build-Lease-Transfer or Design-

Build-Operate and Maintain

Arrangement under Public-Private

Partnership

In terms of implementation, it is similar to DPWHs Long-Term Performance Based Maintenance Contract

Role of the Private Sector

Upfront Financing Feasibility Study Detailed Engineering Design Construction of the Project Routine and Preventive Maintenance

for 15 years

Transfer of Operation and Maintenance to the Provincial

Government after the Lease Period

Role of the Bohol PLGU

Review and approval of the unsolicited proposal under the BOT Law

Review and approval of the Detailed Engineering Design

Issuance of Certificate of Completion for the Improvement component

Monitor Maintenance Performance Standard

Lease Payment over the Lease Period Use and operation of the completed

Project assets after the Lease Period

Expected Benefits

Leapfrogs local economy with initial EIRR of more than 30% (net development,

maintenance, travel time and vehicle operating

cost). More than NEDAs threshold of 15% Increases local pavement ratio Generates operational savings (maintenance

crew, heavy equipment, fuel and lubricants)

Raises ranking of the Philippines on infrastructure competitiveness

Enhances political mileage to the constituents for better road service delivery

Action Steps

Submits Letter of Intent Enters Memorandum of Understanding Prepares Feasibility Study Submits unsolicited proposal Undergoes approval process under BOT Law Contract signing Prepares Detailed Engineering Design Construction stage Maintenance stage

For inquiries:

Contact Engr. Jam Jamonir

Email Address: mjamonir@yahoo.com

Mobile no: +63-9189366112

Maraming Salamat

CONSTRUCTION OF NEW ROAD

Construction Activities Pay Item Number

Clearing and Grubbing Item 100

Sud-grade Preparation Item 105

Portland Cement Stabilized

Road Mix Base Course

Item 204

Bituminous Surface Treatment Item 304

Slurry System for Road

Surface Treatment

Item 304-A

Construction Work Items

CLEARING AND GRUBBING (ITEM 100)

All trees, stumps, roots and other objects not designated to remain shall be cleared and

grubbed. If the area is not to be benched, the removal of undisturbed stumps and rootsand

nonperishable solid objects that will be a minimum of four feet below the embankment

surface and that do not extend more than six inches above the original ground line, will not

be required.

LEVELING AND GRADING OF SUB BASE

The entire roadbed was shaped and compacted to the requirements of elevation and compaction. Scarifying, and rolling, was performed to provide a thoroughly compacted roadbed. Using a ten (10) tonner vibratory plate compactor, a three (3) pass compaction or until full compaction was achieved was implemented on the roadway. Watering the sub grade was done before compaction.

CRUSHING

Crushing the base coarse to a depth of 0.20 m using a crusher. All organic material and large stones were removed.

SPREADING OF PORTLAND CEMENT

Spreading of Portland cement then followed. A four percent (4%) Portland cement was spread to a total width of 9.7m or twelve kilos of Portland cement per square meter (12 Kg. / Sq.m.) was laid on the roadway.

DRY MIXING OF PORTLAND CEMENT

OVER THE CRUSHED BASE

Dry mixing using a crusher then proceed to mix the cement with the crushed base coarse.

WATERING

Watering the mixed cement and base coarse then followed to bind

them.

WET MIXING

Wet mixing followed using a crusher to achieve the right consistence of the Stabilized Soil.

GRADING

COMPACTION

FINISHED STABILIZED ROADWAY

Grading the stabilized soil proceeded to achieve the right elevation and crowning. Compaction then proceed to compact the stabilized base coarse. Duration of six (6) hours to four (4) days curing time and constant watering was observed in the stabilized soil.

Chip sealing/DOUBLE BITUMINOUS

SURFACE TREATMENT

PRIME COAT

Pavement Surface Treatment Thru Chip Sealing Using Single Bituminous Surface Treatment was applied of roadway for a width of 9.7m. Surface preparation was then conducted by removing the loose materials but it was made sure that the top layer was not removed. Watering the surface was done to make sure that the surface was still damp for priming. Priming the base with a heated CRS 2 mixed with water at one: one ratio (1:1) was applied. The primer was heated to a temperature of seventy (70) to ninety (90) degree Celsius. The newly stabilized base was allowed to cure.

TACK COAT

Tack coat. After curing, CRS 2 was sprayed. CRS 2 was heated to a temperature of seventy (70) to ninety (90) degree Celsius.

SPREADING OF AGGREGATES ( TO )

Immediately following the application of tack coat, spreading of to crushed aggregates was applied. Rolling then proceed with pneumatic tires was done. Fog seal of CSB3 diluted with water at 1:1 ratio was applied after curing.

COMPACTION

FINISHED CHIP COARSE

WEARING COARSE

APPLICATION OF SLURRY

APPLICATION OF FIRST LAYER

Slurry seal. Before placing the slurry course, the pavement was cleaned by sweeping to remove all loose particles of paving; all dirt loose chips and all other extraneous material are also removed. Using a Micro paver, a first layer slurry seal was applied with a total width of 6.7 meters to seal the voids between the crushed aggregates of the chip seal. After curing the surface was then rolled by a pneumatic roller. Second layers then proceed and rolling then followed after curing.

CURING AND ROLLING

APPLICATION OF SECOND LAYER

CURING AND ROLLING

FINISHED ROADWAY

FINISHED ROADWAY