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

The specifications call for a 1:2:4 concrete mix. In a one bagger mixer, which of the following amount of eater is most likely required for the mix?

Quality control testing ni the DPWH project is the responsibility of the:

In performing a grading test on coarse aggregates from Item 311-PCCP, the mass percent passing of the materials for 3" and 21⁄2" sieves is 100%. What is the maximum size of the aggregates?

What is the minimum soaked CBR value required for the base materials obtained at the maximum dry density determined by AASHTO T180 Method D?

The minimum moisture content at which soil can be rolled into a thread of 1/8" in diameterminimum moisture content at which soil can be rolled into a thread of 1/8" in diameter without breaking is known as

The mortar proportion of stone masonry shall be:

Why are undisturbed samples used primarily for determining the properties of foundation materials?

Test reports on thirteen (13) concrete beam samples indicate that loading was stopped after reaching the required flexural strength of 550 psi. this practice is:

Universal Testing Machines should be calibrated at least:

The selection by a standard method of a representative portion of a material for the purpose of ascertaining its characteristics di called:

Which of the folowing does not fal under the primary responsibility of hte materials engineer?

What other type of cement is allowed to be used from Item 311 and 405 in the absence of Portland cement?

A soil compacted dry will reach a certain dry density. If compacted again with the same compactive effort, but this time with water in the soil, the dry density wil be higher because:

Emulsified asphalt applied as tack coat prior to laying of bituminous mix is completely cured one it turns to what color?

If one of the measurements of a core specimen taken from a concrete pavement is 23.6 cm., what is the corrected measurement to be used in calculating the average thickness of the pavement fi the design thickness is 23.0 cm.?

An Inspection Report can be issued as basis for acceptance for the following except:

The purpose of conducting laboratory CBR test on the fill materials for embankment is the check:

When the top surface of a concrete specimen is rough and not truly plane, stress concentrations are introduced and the strength of the concrete si reduced by about:

Per program of work, the estimated volume of Item 201 materials is 6,200 cu.m. How many compaction tests are required based on the DP WH minimum testing requirements?

Cutback asphalt or emulsified asphalt is usually used for:

Under what climatic condition(s) do we use the higher penetration grade or soft asphalts?

What will possibly be the result of using different brands of cement in concrete paving?

What is the basis for acceptance or rejection of any construction materials?

The index of the retained strength of the compacted bituminous mixtures is the ration of the compressive strength of immersed and dry bituminous mixtures. What is the minimum index of the retained strength required for bituminous mixtures?

What is the specification range for asphalt content in a bituminous concrete mix for surface course paving?

Undersized reinforcing steel bars that satisfy the tensile and elongation requirements may be accepted provided that its underweight does not exceed:

Which of the following sinot a purpose of the trial sections for subbase construction?

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

Measurement of concrete materials for Item 405 - Structural Concrete shall be by:

What documentation should be maintained and kept updated by the materials engineer during project implementation?

Aggregates for concrete mixes are classified as either fine or coarse aggregates. Which sieve is used to separate fine from coarse aggregates?

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

According ot the AASHTO Method of Soil Classification, an A-3 material is classified as:

What class of concrete and range of slump will you use in concreting thin reinforced section, railings, precast R.C. piles and cribbing?

When taking three or more samples of aggregates to be combined for one material sample:

Where do we take additional cores when the measurement of any core taken from the pavement is deficient ni thickness by more than 25 mm?

The Standard Penetration test is an in-situ test That measures:

Which of the following bituminous materials is best recommended for sealing weakened plane joints?

When Testing cement samples, the lead time required to test them should be considered to prevent delays in project implementation. How long does it normally take to test cement samples?

Quality of factory-produced reinforced concrete pipes may be best established through:

As materials engineer, what is the area of the trial section that you would recommend to check the suitability of the materials and efficiency of the equipment to be used for Item 310, Bituminous Concrete Surface Course?

A well-graded aggregate for base course has proper proportioning of:

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

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

A set of three (3) beam samples representing a particular section of the concrete pavement failed to meet the flexural strength requirement. As materials engineer, what would you recommend?

For each full day's operation, how many asphalt core samples must be taken for thickness determination?

The percentage residue requirement for hydrated lime on A 0.075 mm (no. 200) sieve shall not be more than.

The latest state of the Art method in determining density.

If the lab. Density of Bituminous mix is 2.33, what is the degree of compaction of a 5 cm. Asphalt pavement, if the field density obtained is 2.10?

The Ratio of the weight/mass of the water in the soil to the weight/mass of the dry soil after has been dried to constant weight/mass at atemperature of 110°C +-5.

SKID Resistance to asphalt

Density - Voids Analysis

The behavior of the soil is influenced by the amount of?

The transition from plastic to liquid to liquid state?

The moisture content in percent, required to close a distance of 12.5 mm along the bottom of the groove after 25 blows.

The minimum mass of the field samples for coarse aggregate with a minimum nominal size of aggregate of 50mm (no.22") sieve.

One way of checking the suitability of the materials prior ot the construction of sub-base/base and the efficiency of equipment and construction method.

Surface irregularity for subbase materials measured by a 3-m straight edge.

Which of the following information does not contain in a Job Mix formula?

The Clay lumps or shale contain after washing fine aggregate shall not be more than.

Stones, for grouted riprap shall be laid with close, broken joints and shall be firmly bedded into slope and against the adjoining stones, each stone shall be laid.

The Variation of the surface on finished asphalt pavement from the testing edge using 3-m straight edge applied at right angles between contract with the surface shall not exceed.

The speed of the roller for the initial and final compaction shall not exceed.

Filled gabions shall have a minimum density of

Rock gabions shall be generally uniform graded in sizes ranging from?

Department Order series of 1999 Re-guidelines of the accreditation of contractors and consultant's materials engineers.

Weep holes shall be placed at the lowest points where free outlets for water can be obtained and shall be spread not more than?

The maximum Average deficient thickness per lot of core specimens where 100% payment is recommended?

To non-load bearing concrete masonry shall have a minimum individual compressive strength.

Concrete in the area represented by the cores will be considered adequate if the average strength of the cores is equal ot 85% of the specified strength of fc' and no single cope is less than?

Minimum weight of samples for moisture content determination for materials passing 50mm (2") sieve.

Soil classification is determined by?

Gabions dimensions are subjected to a tolerance limit on manufactures stated sizes.

Minimum tensile strength of tendons

Soil can be compacted ot 10 %if?

In preparing samples of aggregates using quartering method, done on a hard clean and level surface, the reduced size of sample should be taken from?

Which of the following are engineering properties of fined grain soils?

Adequate compaction for sub-base/base will result to?

Which of the engineering properties of the soils does not belong ot the granular soil?

Kind of soils which are susceptible to strength and volume due to change in water content.

% of moisture for timber to be seasoned, used ni pile driving.

Economical way of treating an embankment with weak spot.

The 300mm thick subbase materials should compacted ni how many layers

The three sores samples has the strength of 3000, 2450 & 260 psi respectively and the required strength is 3,500 psi as a Materials Engineer, What should you recommend?

Indicates the temperature in which the asphalt maybe heated without the danger of catching fire.

Measure on how much oil (Volatile) is lost is asphalt and also determine on how fat asphalt cement will become harder.

A kind of asphalt formed by natural process of evaporation

A requirement specifying the kind and no. of test prescribed ni each project based on estimated quantities

The amount of sample used to determine CBR test?

Materials finer than 0.075 m can best be separated from larger particles through

Test used to determine the resistance of aggregates to disintegration by saturated solution.

What is the basis for the acceptance or rejection of any construction materials

Which of the following are the components of asphalt?