In concrete pavement construction, a concrete mix was not place within 1 hour and 50 minutes. What should the materials engineer recommend?

Compaction trials on embarkment and base/subbase courses are carried our to determine the:

The most widely used control test in embankment construction to ensure adequate compaction is the;

Which of the following practices is acceptable to use to bring down the temperature of the concrete mix?

If the pipes, area fabricated in projects located in remote areas and it is impractical to send samples to manila or any private testing laboratory for testing, what would you do if your are the materials engineer?

Soil can be compacted to 100% if

Blended Hydraulic Cement shall conform to the requirements specified under

A sample of fine aggregate was subjected to colorimetric test for inorganic impurities. Results revealed that the color produced by the sample was darker than the standard color guide. As a Materials Engineer, how will you evaluate the material?

The ratio of the weight in air of a unit volume of the impermeable portion of aggregate to the water in air of an equal volume of gas-free distilled water at a stated temperature.

The asphalt applies as tack coat prior to laying of bituminous mix is completely cured once it turns to what color.

As per Item 311, the road shall not be opened to traffic until test specimens molded and cured in accordance with AASHTO T23 have attained the minimum strength requirements. What will be your option as a Materials Engineers if such tests are not conducted prior to the specified age of the pavement?

At what interval shall core samples for compacted asphalt pavement be take

If beam samples taken from a newly pave section failed to meet the strength requirements and it is not advisable to obtain cores from the structure due to structural considerations. As materials engineer what will you do if the deficiency in strength of the concrete specimens is 15%.

All shotrete shall be cured uninterrupted for at least how long?

During asphalt paving, the rolling shall be continued until ______ of the density of the laboratory specimens has been obtained.

The cores taken from pavement section poured on a single day were tested to have strength as follows: Core. Strength 1. 3650 2. 3000 (86% of 3500psi) 3. 2450 (70% of 350Opsi) Average 3033 (87% of 3500psi) The required strength is 3500 psi, concrete in the area represented by these cores:

Which of the following describe the effects of fly ash in Portland Cement Concrete Pavement?

What penetration grade of asphaltic material is appropriate for sealing of pccp joint.

Most road signs are hard to read at night. What is the specification requirement in the reduction of brightness of the reflective, sheeting during night time and when totally wet by rain?

Cement which has been in storage for so long a period that there is already doubt as to its quality should:

What is the frequency of core sampling required on a completed bituminous pavement?

In slip-form construction, what is the slump of concrete used?

What is the Minimum Testing Requirement for embankment materials?

For acceptance purposes, core samples shall be taken home from the completed asphalt pavement

The maximum number of layers for stacking cement bags which will be stored for more than 60 days?

Which of the following items does not require testing as basis for acceptance.

Insufficient compaction or vibration during placing of concrete may cause what type of defect?

The asphalt material that is usually classified by its penetration grade is

An inspection report can be issued as basis for acceptance for the following except;

What should be the length of sample 16mm diameter steel bar that should be submitted for quality test.

Which of the following in NOT included in the recommended method of curing Portland Cement Concrete Pavement?

For efficient compaction, the embankment materials should be at the time of rolling be____________

Laboratory report revealed that the asphalt cement used in the asphalt mix was more than what was required by the job mix. Which of the following will be most likely occur?

Test pitting conducted on a prepared based showed that the thickness of item 201 (aggregate base course) was deficient by 5cm. As a materials engineer. What will you recommend?

The test to determine the purity of asphalt cement is called;

Which of the following is the frequency of sampling of concrete beams required by DPWH specification:

Which of the following is the recommended cement content for stabilizing poorly graded sand?

A concrete core specimen for thickness determination shall have a diameter of at least;

The main problem associated with wrong practice of conveying concrete is called:

As prescribe under Department Order No. 37 Series of 2016, Pile Integrity Test shall be conducted on.

The asphalt pavement represented by the individual core shall not be accepted if the deficiency in the core thickness as obtained exceeded.

Too wet mix, oversanded mix and overworking of concrete during placing usually result in _______ of concrete pavement.

Cores are taken from a concrete pavement and tested for

To determine the abrasion loss of the tested aggregates, the smoke is screened on

The test to indicate the temperature wherein asphalt can be heated without catching fire is called;

What other type of cement is allowed to be used for items 311 and 405 in the absence of portland cement

Which of the following is the least likely cause of corrugations on asphalt pavement?

A core test for concrete pavement thickness determination showed that three (3) out of nine (9) samples taken failed to meet the thickness requirement. The deficiency in the average thickness of the cores is more than 25mm, what will you do as material engineer;

For Item 106- Compaction Equipment and Density Control Strips, Control Strips shall have an area approximately _____ and shall be the same depth of the course/ layer it represents.

What chemical admixture is needed to produce a concrete mix with improved slump without additional water