Extraction of SBR polymer modified bitumen?

More Chamod Hettiarachchi's questions See All

When conducting a waste assessment questionnaire are there pre-determined questions or should we create them as we like?

07 May 2024 4,279 2 View

Variables with different likert scales?

Scenario - There is an IV and DV. IV is measured in 5 point likert scale questions and DV is measured in 7 point likert scale questions. Doubts - 01. Can we run a test like regression analysis...

29 November 2023 4,999 6 View

How to extract intense rainfalls (e.g., annual maximum rainfall for 24-hr duration) from the historical records of daily rainfalls?

Generally, the daily rainfalls are recorded at fixed time intervals (e.g., from 9 am to 9 am). We can find such records of historical rainfalls for centuries. However, in such records, even the...

20 November 2023 5,759 2 View

What are the criteria to be adopted in sizing the gates of salinity barriers constructed across the rivers drain flood prone areas?

I have a problem of designing a salinity barrier on a river flowing through a large agricultural area, susceptible for flooding, to prevent saltwater intrusion to domestic water supply intakes....

02 November 2023 2,087 0 View

Univariate Vs Multivariate Outliers?

There is a common understanding that, in many cases, the absence of extreme values (univariate outliers) in individual variables may reduce the likelihood of extreme values when considering...

03 October 2023 446 10 View

Parametric Assumptions in the presence of mediator or moderator?

In a causal model (such as multiple IVs and single DV) with presence of a mediator or moderator, do we have to consider such mediator or moderator when assessing the parametric assumptions or do...

25 September 2023 3,241 3 View

What is the real cause behind the failure of ‘Yala’ (2023) cultivation under the 'Udawalawa' Scheme? Drought, wrong decision or some other?

This question is mainly targeted to Sri Lankan Engineers, Meteorologists, Agronomists and Lawyers. Even the foreign researchers and consultants who familiar with the system (‘Udawalawa’ &...

06 September 2023 8,987 0 View

What are the adverse effects of using freshwater reservoirs for generating solar energy?

Mine is a tropical country which has developed freshwater reservoirs in different eras of the history (new and ancient), mainly for the purpose of irrigation and hydropower. Those reservoirs are...

26 August 2023 5,463 1 View

What are the laws and regulations available for securing riparian rights of water in river systems and priority order of water using activities?

Udawalawa is a large reservoir constructed in 1960s, mainly for the purpose of irrigation. Later, around 1990s, hydropower reservoir was constructed at the upstream of the same catchment...

11 August 2023 3,799 2 View

Any idea for a BSc Computer Science/ Software Engineering student for the final year research?

As a CS/SE student currently I'm finding an area for research. Currently my idea was to investigate more about recommendation systems using ML and deep Learning, but with the timeline to complete...

06 August 2023 3,862 3 View

The relationship between gradation and asphalt index?

The gradation of different asphalt mixtures is closely related to the asphalt index, so how to determine whether the asphalt index under different gradation is appropriate in the project?

17 April 2024 7,066 1 View

Asphalt Surfacing on Steep Streets?

We have a number of very steep streets with up to 30% grade. Whilst it is unlikely that we would build streets with that grade any more, many still exist with bitumen or asphalt surfaces. These...

25 March 2024 7,469 4 View

Did you know why bitumen coatings are applied in footings ?, And where mostly ?

BITUMEN

07 February 2024 4,531 1 View

What is the right temperature for mixing asphalt mixtures? Are you referring to the BTDC values or any other values?

What is the right mixing temperature for creating an asphalt mixture sample? Is the mixing temperature obtained from the Bitumen Test Data Chart (BTDC) or other values, such as the recommended...

23 January 2024 8,384 3 View

How can i use both LDPE and MDPE as asphalt modifier ?

I'm searching for best blend of waste polyethylene between (high density, medium density and low density polyethylene) for improving mechanical properties of hot mix asphalt against rutting,...

06 January 2024 7,773 3 View

For Pavement Layers, what is the best finite element application to compute the friction, lateral displacement, shear stress and strain ?

Dear all, i am preparing a study concerning testing Prime Coat with different applications rates to achieve the optimum rate for a given Asphalt pavement Binder coarse. Kindly please share your...

23 December 2023 447 2 View

Why is the adhesion between cold mix asphalt and aggregate weaker than that between hot mix asphalt and aggregate ?

1) Is the adhesion mechanism of hot mix asphalt and aggregate different from that of cold mix asphalt and aggregate ? 2) Why does this happen？

10 December 2023 6,853 2 View

What is the indication of energy ratio (ER) of asphalt concrete mixture with value below 1 ?

for DCSE was determined using the procedures developed by Roque and Buttlar based on IDT tensile strength test and resilient modulus test if ER is below 1 , is the cracking resistance is poor and...

02 December 2023 9,949 0 View

API of Natural bitumen?

Can the API of natural bitumen be calculated?

30 November 2023 4,619 4 View

How can increase the efficiency of asphalt solar collector ?

explain your idea

22 November 2023 3,917 2 View

Daud Khan Sangeen

If Viscometer with built-in temperature regulator may used.

Then it is easy to separate the two items.

Jayaprakash Reddy Joga

SBR modified bitumen for asphalt modification are manufactured in a highly automated state-of-the-art facility, ensuring consistently high quality. The products are successfully used in both hot mix and asphalt emulsions....