What is AP20 aggregate?
AP20, AP40, AP65 Top Coarse AP20/40/65 is a ‘Self-Binding Gravel’. It is an easy to lay alternative to traditional materials such as flags, paving, chip or concrete.
What is PAP aggregate?
AP, ALL PASSING; PAP, PREMIUM ALL PASSING: aggregate that passes through certain sized sieves. APPLICATION RATE: For BINDER, the amount of material applied to a given area of road surface, expressed in litres per square metre ( /m2).
What is AP40?
AP40. A crushed aggregate with fines that are used as a strong base course for foundations, driveways, paths and paving preparation. Must be compacted to form a strong base.
What is the clay index test?
Methods of sampling and testing road aggregates – Methods of testing road aggregates – Laboratory tests – Test 3.5 The clay index. Outlines the method of test for a methylene blue titration test used to estimate the percentage of expansive clay material in natural fines or rock powders.
What is drainage aggregate?
Drainage aggregate is used behind all walls to keep water pressure from building up behind the wall face. In addition, for walls over 3 feet high, perforated drain pipe is used to collect and eliminate large amounts of water from behind the wall.
What is crusher dust?
Description. Crusher Dust is a fine powder like material that can be used as a compactable & screedable base under pavers and slabs. Crusher dust is an economical and sturdy material for pathways and driveways because it compacts to a hard and stable surface.
What is PAP concrete?
Premium All Passing 7 is a versatile fine aggregate sand product that can be used in a variety of ways. Consistently clean with excellent shape and strength characteristics Premium All Passing 7 is available for use in concrete and pavement mixes. It can be custom tailored to suit the job you need it for.
What is gap grading of aggregates?
Gap grading of the aggregates results in lower requirement of water content, and hence lower water-cement ratio, and permits a higher aggregate-cement ratio to achieve the same workability as its continuously graded counterpart with equal cement content and equal maximum size of coarse aggregate.
What is pi value of soil?
The PI is defined as the range of moisture contents over which the soil deforms plastically. The PI is thus defined to be the difference between the LL and the PL; i.e., (2.19) The PI thus is a measure of the plasticity of a soil. As such, the PI determines the amount and type of clay present in a soil.
What is Pi in gravel?
Plasticity Index (PI) Driving Surface Aggregate. What is PI: Plasticity Index is the range of moistures at which a material behaves in a “plastic” state and is neither a solid or a liquid.
What size aggregate is best for drainage?
½ inch to 1-inch
In general, you want to aim for ½ inch to 1-inch gravel for drainage. Areas that will see especially heavy flow may need larger gravel. Or, projects without drainage pipes may also need larger gravel. For example, a French drain without perforated pipe needs 1 ½ inch gravel.
What is the density of crusher dust?
A materials density is defined as its mass per unit volume. Based on Figure 2, it was recorded that quarry dust waste with 0% dominate and become the highest value of dry density with 1915.9 kg/m3 followed by quarry dust waste with 10% with the value is 1879.2 kg/m3.
What is another name for crusher dust?
Crusher dust is an economical and sturdy material for pathways and driveways because it compacts to a hard and stable surface. Crusher dust may also be referred to as blue metal dust, cracker dust, and quarry sand.
How much is 1m3 of concrete NZ?
$200 to $300 per cubic metre
You can expect the cost of concrete per m3 to be anywhere from $200 to $300 per cubic metre, depending on the strength of concrete you need, the size of your project and how much concrete you have to purchase.
What is an aggregate gradation chart?
The grading of aggregates is represented in the form of a curve or an S-CURVE. The curve showing the cumulative percentages of the material passing the sieves represented on the ordinate with the sieve openings to the logarithmic scale represented on the abscissa is termed as Grading Curve.
How much aggregate do I need?
You would usually lay a 10mm aggregate at a depth of 30-40mm, but on a driveway this would need to be at least 50mm. A 20mm aggregate would need to be at least 40-50mm deep, and at least 50-60mm on driveways. A larger aggregate will settle and bond together better than smaller ones.