(adsbygoogle = window.adsbygoogle || []).push({}); Determination of Aggregate Impact Value – Impact Test on Aggregates is done to carry out to: Determine the impact value of the road aggregates, Assess their suitability in road construction on the basis of impact value. Aggregate Impact Value on Coarse Aggregates Apparatus for Aggregate...

41. A first class brick when immersed in cold water for 24 hours should not absorb water more than a) 15% b) 20% c) 22% d) 25% Ans: b 42. Crushing strength of a first class brick should not be less than a) 3.5 N/mm2 b) 7.0 N/mm2 c) 10.5 N/mm2 d) 14.0 N/mm2 Ans: c 43. The main function of alumina in brick earth is a) to impart plasticity b) to...

Civil Engineering Works Qu...

21. Crushing strength of a good building stone should be more than a) 50 MPa b) 100 MPa c) 150 MPa d) 200 MPa Ans: b 22. Specific gravity for most of the building stones lies between a) 1.5 to 2.0 b) 2.0 to 2.5 c) 2.5 to 3.0 d) 3.0 to 3.5 Ans: c (adsbygoogle = window.adsbygoogle || []).push({}); 23. Spalling hammer is used for a) driving...

(adsbygoogle = window.adsbygoogle || []).push({}); 1. Gypsum is a a) mechanically formed sedimentary rock b) igneous rock c) chemically precipitated sedimentary rock d) metamorphic rock Ans: c 2. Which of the following sedimentary rocks changes into quartzite by metamorphic action ? a) sand stone b) lime stone c) shale d) gypsum Ans:...

(adsbygoogle = window.adsbygoogle || []).push({}); (i) Chemical properties: Portland cement consists of the following chemical compounds: (a) Tricalcium silicate 3 CaO.SiO2 (C3S) 40% (b) Dicalcium silicate 2CaO.SiO2 (C2S) 30% (c) Tricalcium aluminate 3CaO.Al2O3 (C3A) 11% (d) Tetracalcium aluminate...

(adsbygoogle = window.adsbygoogle || []).push({}); The term ferro-cement implies the combination of ferrous product with cement. Generally this combination is in the form of steel wires meshes embedded in a portland cement mortar. Wire mesh is usually of 0.8 to 1.00 m diameter steel wires at 5 mm to 50 mm spacing and the...