GATE 2023 Transportation Engineering Quiz 53

Choose the correct statements for flash and fire point test

I.  The fire point is defined as the lowest temperature at which application of a test flame causes the vapours of the binder to catch an instant fire in the form of flash under specified test conditions.

II. The flashpoint is the minimum temperature at which material gets ignited and burn at least for five seconds under specified test conditions

III. Two type of test apparatus can be used to determine flash and fire point namely the Pensky - Martens closed cup tester and open cup tester.

Float test is performed to evaluate the characteristics of which of the following highway construction materials?

Which of the following Specifications of Marshall mix design are correct.

Which among the following are correct?

In the Marshall method of mix design, the filler, bitumen, coarse aggregates and fine aggregates having respective specific gravities of 2.69, 2.1, 2.42 and 2.70 are mixed in the ratio of 7.6 %, 4.5 %, W% and 4.5 %, respectively. The theoretical specific gravity of the mix is 2.5 then value of W is____

The theoretical and measured unit weight of mix is a Marshall specimen prepared for bituminous concrete with a bitumen content of 6 per cent by weight of total mix are 2.4 g/cm³ and 2.2 g/cm³ respectively. The specific gravity of bitumen is 1.05.The present voids in a mineral aggregate filled with bitumen (VFB) are ______ (upto one decimal place)