How to calculate the weight of asphalt - PowerPoint PPT Presentation

About This Presentation
Title:

How to calculate the weight of asphalt

Description:

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 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? – PowerPoint PPT presentation

Number of Views:43
Slides: 28
Provided by: jakenight
Category: Other

less

Transcript and Presenter's Notes

Title: How to calculate the weight of asphalt


1
How to calculate the weight of asphalt 
2
What I discuss in this section
  1. How to calculate the weight of asphalt
  2. About specific gravity
  3. The calculation method for finding weight from
    volume
  4. Points to note when calculating
  5. The density of asphalt mixture
  6. The type changes according to the ratio of
    asphalt mixture
  7. Dense particle size Asphalt mixture
  8. Fine particle size asphalt mixture
  9. The difference in specific gravity and
    performance of asphalt mixture
  10. Open grain size Asphalt mixture
  11. Unit weight of asphalt
  12. Procedures for using asphalt on outside
    construction
  13. 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?

4
How 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.

5
About 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.

6
The 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)

7
Points 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.

8
The 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.

9
The 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.

10
Dense 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.

11
Fine 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.

12
The 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.

13
Open 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.

14
Unit 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.

15
Procedures 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

16
Basic 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.

17
Where 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.

18
Step 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.

19
Step 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.

20
Step 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.

21
Step 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.

22
Step 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.

23
Standard 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.

25
Our Services
  • Commercial Roads
  • Parking Lots
  • Parking Lots Repair
  • Private Roadway
  • Striping

26
Why Choose us ?
  • Professional
  • Free Estimate
  • Employment
  • Asphalt Paving
  • Tar and Chip

27
Website www.standardpavinginc.comPhone Number
844 266 7283physical address 8803
Sudley Road, Suite 206 Manassas, VA , USA
  • How we can be found?
Write a Comment
User Comments (0)
About PowerShow.com