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

Which of the following apparatus is not needed in the determination of moisture content of soils?

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

What is the function of emulsifiers in emulsified asphalt?

Experienced materials engineers have for years employed quick “hand-feel” tests to roughly predict the plasticity index of soils. These test may include:

ASTM C-150 requires that the 28-day strength of mortar made from Type 1. Portland cements be at least 27.6 MPa. Three specimens were tested: two passed but one failed by more than 20%. What will be your conclusion?

The test to indicate the temperature wherein asphalt can be heated without catching fure is called:

The temperature at which bituminous material will evolve vapors that will temporarily ignite when a small flame is brought in contact with it.

The phenomenon wherein the soil subgrade losses strength due to ground shaking and the presence of fine grained cohesionless soil:

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

For asphalt stabilized road mix base course, the number of asphaltic materials to be added to the soil-aggregate shall be:

Unconfined compressive strength is usually performed in:

The ratio of the weight in air 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.

Which of the following tests is NOT conducted on asphalt cement?

Considering the express provision indicated in the DPWH Standard Specification for Item 804 - Embankment, which of the following is considered as an unstable material?

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

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

After the placement of concrete, how long shall pre-cast concrete members be subjected to pre-steaming when it will be subjected to steam curing?

Which of the following shall be considered when selecting a filler material to meet the grading requirements for aggregate base course?

A concrete pavement for a National Primary Road registered an International Rough Index (IRI) value of 3.0 m/km. As a Materials Engineer, which of the following would you recommend?

What are the different tests required for soil classification?

Plastic Limit corresponds to the moisture content of the soil

Which of the following tests is NOT conducted on emulsified asphal?

As prescribed under Item 606 - Pavement Markings, traffic paint shall be applied to the pavement at the rate of 0.33 L/m2 and shall dry sufficiently to be free from cracking in from

For Portland Cement stabilized road mix base course, the amount of cement to be added to the soil-aggregate shall be:

When supervising a project, you noticed that the Contractor was not applying tack coat in between the asphalt layers. Which of the following will most likely occur?

Blended Hydraulic Cement shall conform to the requirements specified under

Samples of Type I Cement when tested for quality passed the requirements except for Loss of Ignition. What will you recommend as a Materials Engineer?

Samples of Aggregate Base Course materials when tested for quality passed the requirements except for grading. What will you recommend as a Materials Engineer?

When supervising a project, you noticed that the Contractor was applying more tack coat than the required. Which of the following will most likely occur?

Which of the following tests is NOT conducted on cut-back asphalt?

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

Considering only the group index (GI) and other factors as equal, which of the following soil samples will you recommend for use as a subgrade material?

Which of the following materials is permitted to be used as bituminous prime coat?

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?

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?

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

All of the following are the test required for Waste Excavated Materials, EXCEPT:

Which of the following will be the result of proper compaction of an embankment material?

Asphalt Emulsion Mixes are also known as

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

In asphalt pavement, the variation of the surface between any two contacts with the surface using a 3-m straight edge shall not exceed:

What type of test is generally used to obtain the maximum dry unit weight and optimum moisture content?

Which of the following prescribes the minimum dry compressive strength of Stone Mastic Asphalt (SMA) mix?

Sampling conducted on asphalt pavement cores showed a deficiency in density by 3%. What will you recommend as a Materials Engineer?

The test used to determine the amount of volatile constituents in cutback asphalt products.

The hardened concrete pavement was tested and was found to have a coefficient of friction equal to 0.30. As a Materials Engineer, how will you decide?

As soon as the concrete has hardened sufficiently, the pavement surface was tested using a 3-m straight edge. Results revealed that the departure from the correct cross section was 13mm. As a Materials Engineer, which of the following will you recommend?

A type of surface defect that is characterized by the wearing of aggregate on the pavement surface due to traffic, causing a much lower surface friction.

Thickness of reflectorized thermoplastic rumble strips as prescribed under the specification:

Which of the following prescribed the minimum index of retained strength of asphalt mixture when tested by AASHTO T165?

When permitted as partial replacement of Portland Cement, fly ash shall not exceed what percentage?

Which of the following statement is TRUE for Item 311 - Portland Cement Concrete Pavement?

A non-agitating truck arrived minutes from a batching plant hauling the fresh concrete mix that you have ordered. You immediately directed to conduct a slump test and observed that the sample failed to meet the slump as specified in the requirement. As a materials Engineer, what will be your recommendation?

Atterberg's limit tests are conducted to determine whether the material passing No. 200 sieve has the characteristics of a clay or a silt. It is also used to determine the plasticity index. Considering these, which of the following statement is TRUE?

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

What is the Minimum Testing Requirement for embankment materials?

Which of the following will you recommend as repair method for alligator cracking of asphalt pavement?

Which of the following describes the effect of fly ash in Portland Cement Concrete Pavement?

The proper way of rolling for asphalt pavement should begin:

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

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

Laboratory apparatus used to determine the specific gravity of cement.

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

When concrete will be deposited in water, its minimum cement content shall be:

What class of concrete shall be used for Item 507 - Rubble Concrete?

The newly paved SMA section shall be closed to vehicular traffic until such that it cools down to what temperature?

For Portland Cement Concrete Pavement, the concrete shall not be left exposed for more than ____ between stages of curing or during the curing period

In concrete pouring for columns, what should be the maximum drop height to prevent segregation?

When compacting concrete, the vibrator shall not be operated longer than _____ in any one location

This is characterized by the ejection of water and subgrade material through the joints or cracks in a pavement.

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

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

Which of the following water-cement ratios will produce the highest compressive strength?

For Item 311, the depth of the weakened plane joint should at all times be:

Flexural strength of concrete beams shall not be less than ____ when tested by third-point method in accordance with ASSHTO T97.

In determining the compressive strength, the maximum permissible range between specimens from the same mortar batch at the same test age shall be:

What is the significance of Loss of Ignition on cement?

During curing, covering materials for concrete pavement shall be maintained at a minimum duration of:

What is the minimum tensile strength requirement for carbon fiber sheet prescribed under Department Order No. 88 Series of 2019?

Stones for riprap ranging from minimum of 30 kg to a maximum of 70 kg with at least 50 percent of the stones weighing more than 50 kg shall fall under what class?

The property or ability of asphalt concrete to withstand traffic loads without distortion or defection especially at higher temperatures.

The significant elements to be checked in the water quality tests are?

Index of Refraction of the beads used for pavement marking shall be within the range of _____ when tested by the liquid immersion method at 29°C.

Which of the following equipment is used for testing paints?

The following shall be included in the submission of job mix formula, EXCEPT:

Additional testing may be required before the use of a curing compound if it has not been used ____ after the date of manufacture

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

At the end of the day's work, the Contractor noticed a considerable amount of thermoplastic materials remaining in the heater. To save resources, the Contractor requested to re-use the material for a different section of the road pavement. As a Materials Engineer how will you decide?

In lieu of rejection of an entire piece of member containing welding which is unsatisfactory or indicates inferior workmanship, the following measures may be permitted, EXCEPT:

As specified Item 500, joint mortar for pipe culverts shall be used within after its preparation

What type of asphalt sealant shall be used fo the joint (TransverseContraction/Weakened Plane, Construction and Longitudinal Joints) as per Department Order No. 91, series of 2016?

Which of the following is the frequency of sampling of concrete beams as required by DPWH Specification?

What is the minimum compressive strength requirement of shotcrete?

What should be the minimum compressive strength of lean concrete?

What class of concrete shall be used for concrete leveling pad for Item 515 Mechanically Stabilized Earth (MSE) Retaining Walls?

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?

The minimum reflective brightness value of traffic sign surfaces for color red with angle of incidence of 50° and angle of divergence 0.5° shall be:

What type of agent shall be incorporated in the curing compound for concrete to prevent it from caking?

For timber forms, it is important that the moisture content of the timber that will be used to make the formwork is in between: