ASPALTO

Rapid Curing CA

AC plus gasoline or naptha

Fine Aggregate

aggregate passing 2.36 mm or retained at 0.075 mm seive

Cutback Asphalt

came from blending of AC plus solvent ; black in color, liquid at room temperature

Asphalt Cement

is black in color, semi-solid in consistency

Soundness

(durability) select aggregate that could withstand the changing weather or climatic condition.

Medium Curing CA

30,70,250,800 and 3000

Rapid Curing CA

70, 250, 800, and 3000

Medium Curing CA

AC plus keresons

Slow Curing CA

AC plus road or diesel oil

Extraction Test

Determine the amount of percent asphalt percent in a bituminous mix

Bulk Specific Gravity

Determine the voids of bituminous mix. (Ideal Gmb = 2.25)

Cement Mixing

It determines the resistance of the emulsion to break when mixed with mineral aggregates

Cationic Emulsified Asphalt

It has a positive charge ion, it has a greater affinity or cohesion with aggregates

Loss on Heating

It is an accelerated test that determines the loss in mass (exclusive of water) of oil and asphaltic compounds (volatiles) when heated and the change in penetration caused by excessive heating

Pure Asphalt/Deposit

Like lake asphalts and could only be found in South America

200 drums

Sampling of Asphalt Cement (one sample, 4 Liters) is done every

Hardness

Select aggregate that are strong and tough in order to avoid deterioration or breakage during rolling or traffic (if not strong, pavement is unstable and there is degradation)

Natural Deposits

Type of Bituminous Material which are asphalt formed by natural process of petroleum oil

Flexibility

ability of the pavement to bend repeatedly with or without cracking and to conform to variations of underlying base

Coarse Aggregate

aggregate retained at 2.36 mm or No. 8 seive

Gradation

aggregates should meet the grading specification

Rock Asphalt

an asphalt that occurs within a porous rock structure or those asphalt impregnated/embedded in rocks. The only commercial source in the Philippines is found in Villaba, Leyte

Bitumen

are obtained in nature or as a residue in refining petroleum oil. It is applied to native substances like; petroleum, native asphalts, minerals waxes, asphaltities in variable colors, hardness, and volatility. It is 99% minimum of asphalt

MANUFACTURED ASPHALT

asphalt cement, liquid asphalt, and blown asphalt are

pothole patching

cold mix asphalt is used in

Grading

determine the composition of aggregate in bituminous mix

Stability

determine the compressive strength of bituminous mix

Extraction Test

determine the particle size distribution of coarse and fine aggregates

Grading Test

determine the particle size distribution of coarse and fine aggregates

Storage Stability

determines the ability of asphalt globules in the emulsion to settle during storage

Density Test

determines the degree of compaction

Immersion Compression Stability

determines the index of Retained Strength of the mix, which is the ratio of wet to dry stability of the mix

Sieve Test

determines the presence of larger globules asphalt in the emulsion

Solubility

determines the total amount of bitumen present in the mixture, where the portion of asphalt that is soluble in petroleum solvent represents the active cementing constituent

Resin

imparts ductility and a high breaking point

60 degree centigrade

in marshall test, the specimens are tested for stability and flow at

Softening Point

indicates the temperature at which the harder type asphalt reach an arbitrary degree of softening

Asphalt

is a dark brown cementitious material, solid or semi solid in consistency, in which predominating constituent are bitumen

Ductility Test

is measured by the distance to which it will elongate before breaking when two ends of a briquette with specimen are pulled apart at a specified speed and temperature

Asphaltene

is responsible for the plastic properties of asphalt and imparts/contributes hardness into it.

Penetration

is the distance or depth that a standard needle will penetrate the sample at 5 seconds, at 25 degrees centugrade. It is measured in 1/10 of a millimeter

Specific Gravity

is the ratio of weight of the material to the weight of an equal volume of water. The test is a gauge to a uniformity of supply of an asphalt. The values are used in converting volumes to units of mass as required in the standards and in sales transactions. Its values is important in the preparation of Job Mix Formula

Petrolene

is the substance which is soluble in petroleum solvents

Anionic Emulsified Asphalt

it has negative charge ion, it has a lesser cohesion with aggregates

Emulsified Asphalt

it is chocolate brown in color, liquid at room temperature and has pungent odor

Manufactured Asphalt

it is the by-product of petrolium oil

Distillation Test

measures the amount of volatile constituents in liquid asphalt.

Flash Point

measures the possibility of the sample to form flammable mixture with air under controlled laboratory conditions.

Viscosity Test

measures the resistance to flow a liquid under gravity or its consistency

Mineral Filler

passing 0.075 mm or No. 200 seive

Shape and Surface Texture of Aggregate

prefer crushed aggregate with rough surface texture and angular in shape

Skid Resistance

resistance offered by the pavement to slippine or skidding of the vehicles tires

Durability

resistance to desintegration due to the detrimental effects of traffic, water, air and temperature changes

Stability

resistance to dispalcement of compacted bituminous mixture

Oily Constituents

responsible for the softness of asphalt

Absorption

select aggregate that do not absorb so much water

Joint Filler or Blown Asphalt

solid and very hard at room temperature, black in color, and odorless , could not be used as binder for pavement but have special uses like: joint/crack filler sealer in concrete pavement

5%

the allowable air voids in compacted asphalt mix is

Workability

the ease by which a material can be placed to its desired uniformity and compacted to a required density

Ionization

the process that Asphalt Cement is being mixed with water plus emulsifier

Spot Test

the test is applied only to asphaltic products derived from petroleum and not applicable to natural asphalts containing non-bituminous matter soluble in xylene. It will determine whether the asphalt is properly prepared or overheated during production

Cleanliness

to remove clayey materials because if unclean, it could not be coated by an asphalt

voids in mineral aggregates

vma means