DPWH BLUEBOOK SPEC EXAM
QUESTIONS WITH CORRECT
ANSWERS
205 - Asphalt Stabilized Road Mix Base Course - Answer- Soil-aggregate mixed with
asphalt (cut-back or emulsified).
4 to 7 - Answer- o Asphalt content: _ to _%.
206 - Portland Cement Treated Plant Mix Base Course - Answer- Central or travel plant
mixing of cement-treated base.
60, 2, 0.5 to 1.0 - Answer- 206
o Placement time: Within __ mins of mixing.
o Compaction completion: Within _ hours of adding water.
o Curing: Bituminous seal (__ to __ L/m²).
207 - Aggregate Stockpile - Answer- Furnishing and placing aggregate in stockpiles for
future use.
300 - Aggregate Surface Course - Answer- Gravel road surface.
45, 35, 2/3 - Answer- 300
o Abrasion: ≤ __%.
o LL: ≤ __; PI: 4 to 9.
o Mass percent loose material passing #200: Max __ of fraction passing #40.
301 - Bituminous Prime Coat - Answer- Preparing base for asphalt by treating with liquid
bitumen (MC or RC).
1 to 2, 24 - Answer- 301
o Rate: _ to _ Liters/m².
o Curing period: __ hours.
, 302 - Bituminous Tack Coat - Answer- Bonding layer between old and new pavement
(RC or Emulsified)
0.2 to 0.7 - Answer- 302
o Rate: ___ to __ Liters/m².
303 - Bituminous Seal Coat - Answer- Application of bitumen with/without aggregate on
existing surface.
40 - Answer- 303
o Type 2 (Sand Cover) or Type 3 (Crushed Aggregate Cover).
o Aggregate abrasion: ≤ __%.
304 - Bituminous Surface Treatment - Answer- Single or Double Surface Treatment
(Asphalt + Aggregate)
40, 20 - Answer- 304
o Aggregate abrasion: ≤ __%.
o Application temp: Air temp must be above __°C.
305 - Bituminous Penetration Macadam Pavement - Answer- Graded aggregate placed
then penetrated with bituminous material.
40, 15 - Answer- 305
o Aggregate abrasion: ≤ __%.
o Application: Only when aggregate is dry and temp ≥ __°C.
306 - Bituminous Road Mix Surface Course - Answer- Mixed in place (Cut-back or
Emulsified).
4.5 to 10, 0.5 to 1 - Answer- 306
o Bitumen content: __% to __%.
o Additives: __ to __% Hydrated Lime.
307 - Bituminous Plant-Mix Surface Course (General) - Answer- General requirements
for hot mix asphalt.
10, 200, 97 - Answer- 307
o Bitumen content: 5.0 to 8.0%.
o Job-Mix Tolerance: Bitumen ±0.4%, Temp ±__°C.
QUESTIONS WITH CORRECT
ANSWERS
205 - Asphalt Stabilized Road Mix Base Course - Answer- Soil-aggregate mixed with
asphalt (cut-back or emulsified).
4 to 7 - Answer- o Asphalt content: _ to _%.
206 - Portland Cement Treated Plant Mix Base Course - Answer- Central or travel plant
mixing of cement-treated base.
60, 2, 0.5 to 1.0 - Answer- 206
o Placement time: Within __ mins of mixing.
o Compaction completion: Within _ hours of adding water.
o Curing: Bituminous seal (__ to __ L/m²).
207 - Aggregate Stockpile - Answer- Furnishing and placing aggregate in stockpiles for
future use.
300 - Aggregate Surface Course - Answer- Gravel road surface.
45, 35, 2/3 - Answer- 300
o Abrasion: ≤ __%.
o LL: ≤ __; PI: 4 to 9.
o Mass percent loose material passing #200: Max __ of fraction passing #40.
301 - Bituminous Prime Coat - Answer- Preparing base for asphalt by treating with liquid
bitumen (MC or RC).
1 to 2, 24 - Answer- 301
o Rate: _ to _ Liters/m².
o Curing period: __ hours.
, 302 - Bituminous Tack Coat - Answer- Bonding layer between old and new pavement
(RC or Emulsified)
0.2 to 0.7 - Answer- 302
o Rate: ___ to __ Liters/m².
303 - Bituminous Seal Coat - Answer- Application of bitumen with/without aggregate on
existing surface.
40 - Answer- 303
o Type 2 (Sand Cover) or Type 3 (Crushed Aggregate Cover).
o Aggregate abrasion: ≤ __%.
304 - Bituminous Surface Treatment - Answer- Single or Double Surface Treatment
(Asphalt + Aggregate)
40, 20 - Answer- 304
o Aggregate abrasion: ≤ __%.
o Application temp: Air temp must be above __°C.
305 - Bituminous Penetration Macadam Pavement - Answer- Graded aggregate placed
then penetrated with bituminous material.
40, 15 - Answer- 305
o Aggregate abrasion: ≤ __%.
o Application: Only when aggregate is dry and temp ≥ __°C.
306 - Bituminous Road Mix Surface Course - Answer- Mixed in place (Cut-back or
Emulsified).
4.5 to 10, 0.5 to 1 - Answer- 306
o Bitumen content: __% to __%.
o Additives: __ to __% Hydrated Lime.
307 - Bituminous Plant-Mix Surface Course (General) - Answer- General requirements
for hot mix asphalt.
10, 200, 97 - Answer- 307
o Bitumen content: 5.0 to 8.0%.
o Job-Mix Tolerance: Bitumen ±0.4%, Temp ±__°C.
