Title: How to calculate the weight of asphalt
1How to calculate the weight of asphalt
2 What I discuss in this section
- How to calculate the weight of asphalt
- About specific gravity
- The calculation method for finding weight from
volume - Points to note when calculating
- The density of asphalt mixture
- The type changes according to the ratio of
asphalt mixture - Dense particle size Asphalt mixture
- Fine particle size asphalt mixture
- The difference in specific gravity and
performance of asphalt mixture - Open grain size Asphalt mixture
- Unit weight of asphalt
- Procedures for using asphalt on outside
construction - Basic knowledge of asphalt construction
3- 2. Where asphalt is often used
- 2. Steps until completion of asphalt pavement
- Step 1 drilling the underground
- Step 2 Roadbed adjustment/crush piling
- Step 3 Make a rolling pressure on the road
- Step 4 Lay out the asphalt composite material
- Step 5 Rolling the asphalt pavement
- 3. My Company Introduction
- 4. Our Services
- 5. How We Can Be Found?
4How to calculate the weight of asphalt
- Now a days asphalt paving is a very popular
material as paving. The mostly driveway paving
companies also recommend asphalt for paving work
as parking lots, residential driveway, or
commercial road, etc. - In calculating the weight of asphalt, necessary
is the volume and specific gravity. It can be
derived by calculating the volume from the
construction area and thickness of the asphalt
pavement and multiplying the specific gravity of
the asphalt used for pavement. - Here, I will explain the basic knowledge which is
the prerequisite for weight calculation and the
attention abnormal to asphalt.
5About specific gravity
- Specific gravity is a word indicating how heavy
an object is with respect to the same volume of
water. Since the specific gravity of the
reference water is 1 and the weight per square
meter is clear as 1 ton, weight can be calculated
concisely by multiplying the volume by the
specific gravity of the object. - Specific gravity is determined by the density
of the object. Density is a term expressing the
weight per volume of an object, the higher the
density, the higher the specific gravity. - Specific gravity becomes very important to
calculate the weight of asphalt.
6The calculation method for finding weight from
volume
- When calculating the weight of asphalt by
calculation, you can use a method of multiplying
the volume by specific gravity. - Volume is obtained by multiplying the
construction area by the thickness of the
pavement, but usually, the asphalt is pressed
slightly because it is treated with a road roller
etc. after spreading. - This is called rolling reduction, and it is
necessary to calculate it taking into account the
volume of stepped down. Since the volume
decreasing by treading is considered to be
approximately 8, 1.08 is multiplied by the
calculation formula as the rolling reduction. - Based on the above, the weight calculation of
asphalt is expressed as follows. - Area (m 2) thickness (m) specific gravity
rolling reduction (1.08) weight (t)
7Points to note when calculating
- In general, asphalt used for paving is called
dense particle size asphalt mixture. - Although the specific gravity is set to 2.35, the
specific gravity determined by the manufacturing
company may differ depending on the product
asphalt actually used for construction. - Lets ask the asphalt shipping contractor in
advance to ask the gravity to confirm. - The specific gravity also varies depending on the
type of asphalt used as described below. The
calculation can be done smoothly by checking what
kind of asphalt to use at the time of
construction.
8The density of asphalt mixture
- The so-called asphalt used for paving is
officially called an asphalt mixture and is
classified according to density. - Each type of asphalt mixture has different
strength and weight. - Differentiation of the asphalt mixture is
determined by the size and density ( particle
size) of the blended particles, and there are
dense grain asphalt mixture, fine grain
asphalt mixture and open grain asphalt mixture
in order of strength. - Since the strength and properties of asphalt
required for paving change, change the type to
use according to the required strength.
9The type changes according to the ratio of
asphalt mixture
- The materials that make up the asphalt mixture
are as follows. - Coarse aggregate- A relatively large gravel or
crushed stone, with more than 85 left when
sieving the eye size to 5 mm filter. - Fine aggregate- 85 falls through a 5 mm
sieve, relatively small gravel, and crushed
stone. - Filler- A fine powder of mineral which further
crushed gravel and crushed stone into crushed
powder. It has the role of filling the gap
between the aggregate. - Asphalt- Adhesive that summarizes the above
aggregate and filler as a connection and
completes it as an asphalt mixture. The residue
of Petroleum to separate gasoline and heavy oil
and purify. If you use cement instead of asphalt
for concrete, it becomes concrete.
10Dense particle size Asphalt mixture
- Asphalt pavement which is most often seen in
everyday life, it is often used for road paving.
It is characterized by large grains mixed, there
is an advantage that it is inexpensive and can be
constructed in a short period of time. - It is an important characteristic that it is hard
to deform, it is resistant to wear, and the
anti-slip effect is high.
11Fine particle size asphalt mixture
- It is a pave that mixed a lot of smaller grains
than those of dense grain size. Because the
particles are small and the gaps are small, they
are characterized by high water resistance and
strong resistance to cracking. - Open grain size Asphalt mixture
- It is a pavement with small grains distributed at
low density. Even if the surface compares the
above two, it is characterized by being very
rough, it is said that it is hard to make a
puddle to suck water well. - Moreover, in order to prevent moisture from
staying on the surface, it also has the
characteristic that the road surface is hard to
slip.
12The difference in specific gravity and
performance of asphalt mixture
- The specific gravity and performance of each
general asphalt mixture, the scenes to be used
are summarized below. - Dense particle size Asphalt mixture
- Specific gravity 2.35
- Performance The most popular asphalt for paving.
Strong, slip resistant, construction is cheap. - Mainly used places Road with many passengers
including national highways. A part with a sharp
gradient. - Fine particle size asphalt mixture
- Specific gravity 2.30
- Performance Water resistant to cracking hard. On
the other hand, it has difficulty to deform. - Mainly used places Where heavy trucks such as
heavy-duty trucks frequently operate and parking
lots.
13Open grain size Asphalt mixture
- Specific gravity 1.94
- Performance Water drainage is good, the road
surface is easy to dry, so it is difficult to
slip. On the other hand, wear resistance is lower
to the above. - Mainly used places Locations where road surfaces
are likely to get wet, such as places that are
prone to flooding and snowy countries.
14Unit weight of asphalt
- If you know the specific gravity, you can
calculate the weight per volume by weight. Below
is the weight per cubic meter of each asphalt
mixture. - About 2.5 tons of dense grain asphalt mixture
- Fine particle size asphalt mixture About 2.4 tons
- Open grain size asphalt mixture About 2.0 tons
- The above unit weight is multiplied by the number
which is regarded as general gravity to the last.
15Procedures for using asphalt on outside
construction
- The external structure is a term other than the
construction of the building that refers to the
structure inside the buildings, the whole of the
exterior. In addition it seems that driveway
paving contractors suggest asphalt, and also
there are many people who want to pave their
parking lots with asphalt material as well. - This discussion may help you if you want to pave
your driveway or parking lot yourself or want to
hair an asphalt paving company. Concrete and
asphalt are generally used for the exterior
pavement, but here I will explain the step by
step construction when using asphalt
16Basic knowledge of asphalt construction
- I will introduce the basic properties of asphalt,
the structure when laying on the ground, and the
place where asphalt is used as pavement material. - Basic properties of asphalt
- When we so-called asphalt for paving is the
official name "asphalt mixture" and is
manufactured by blending asphalt and some other
materials. The materials are roughly classified
in descending order as follows. - Coarse aggregate
- It is relatively large gravel and crushed stone.
This is about 85 of the large grain that
remained through a 5 mm eye filter. Pavement
materials mixed with coarse aggregate are rough
on the surface, enhancing durability and
anti-slip effect. - Tine aggregate
- It falls on a 5 mm sieve and refers to relatively
small gravel or crushed stone. The surface of the
paved road which contains a lot of fine
aggregates is finely fine and becomes strong
against water and cracks.
17Where asphalt is often used
- Generally speaking, asphalt is often seen in
roads such as general roads and highways. Asphalt
is widely used for road pavement from its
excellent road characteristics. - However, even outside the road, repairs are easy,
construction costs are cheap, and functionalities
such as drainage are high so it may be used for
parking lots and housing exteriors. In addition,
asphalt is also used as water resistant the
material on the roofs.
18Step 1 drilling the underground
- In order to build the road floor and the bedrock
which becomes the foundation of the road, we
first dig in the construction area. Depending on
the strength of the ground to be constructed, we
will drill the roadbed as much as necessary, dig
your driveway soil about 12 cm for a pedestrian
and about 25 to 30 cm for the driveway or more
according to the use of the driveway. We will
reinforce the ground here if the ground is weak. - After excavation, tread the exposed soil with a
roller etc. If you need a brick fence or a block
fence at the scene at a parking lot or the like,
it is installed at this stage.
19Step 2 Roadbed adjustment/crush piling
- Lay down crushed stones in the drill holes and
form the roadbed. Large gravel is used for the
lower roadbed, and small gravel stone is used for
the upper roadbed. - Also, decide the height and slope of the roadbed
so that rainwater accumulated on the surface of
the asphalt flows smoothly to the side grooves.
Depending on the shape of the parking lot
(extended parking lot etc), it may be necessary
to have many slopes.
20Step 3 Make a rolling pressure on the road
- To maintain the crushed stone density high, we
will roll the roadbed. Put pressure on the
crushed stone further with a road roller etc. - Tighten firmly until it reaches the specified
density. If rolling pressure runs short, ground
subsidence may occur, so it is a very important
process.
21Step 4 Lay out the asphalt composite material
- We will spread the asphalt mixture forming the
surface layer and the base layer. The asphalt
softens by heating and solidifies when it cools
down, so it becomes a spreading operation while
keeping warm if necessary. - Considering that it will settle after completion
of the construction, carry out a work called
"remaining bulk" to bulge the finished surface of
asphalt beforehand. - After the overgrowth is complete, make it so that
the road surface becomes flat.
22Step 5 Rolling the asphalt pavement
- Since asphalt just laid is mixed with air, it is
soft and fluffy, so firmly pressurize it with a
roller or vibrator to remove air and tread it. - Temperature management becomes very important
also during rolling. To finish cleanly it is
necessary that the high temperature is
maintained, and if it cools down during work it
will cause distortion and cracking. - After sufficiently treading down, wait for the
asphalt to cool down and be completed.
23Standard Paving Inc.From roadway to driveway
WHO ARE WE
24 Our Introduction
- Standard Paving Inc. is one of the most famous
pavers in Virginia. We have been providing our
services for last 3 decades. We are experts in
expedited repair as well as renewal of your of
current parking lots. We have done many projects
based on replacing parking lots and to repair
damaged roads. We have also made a number of
private roadways and commercial roads.
25Our Services
- Commercial Roads
- Parking Lots
- Parking Lots Repair
- Private Roadway
- Striping
26Why Choose us ?
- Professional
- Free Estimate
- Employment
- Asphalt Paving
- Tar and Chip
27Website www.standardpavinginc.comPhone Number
844 266 7283physical address 8803
Sudley Road, Suite 206 Manassas, VA , USA