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You Are On Multi Choice Question Bank SET 526

26301. According to IS : 382-1963, a good aggregate should be





26302. The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be






26303. If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respetively and W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is obtained by the equation






26304. For the construction of thin R.C.C. structures, the type of cement to be avoided, is






26305. Vicat apparatus is used for






26306. A symbiotic association where both the partners benefited and neither can survive without the other is called





26307. For the construction of the retaining structures, the type of concrete mix to be used, is






26308. An ideal ware house, is provided






26309. Concrete is unsuitable for compaction by a vibrator if it is






26310. Inert material of a cement concrete mix, is





26311. Sands of zone I are





26312. The lower water cement ratio in concrete, introduces






26313. The cement becomes useless if its absorbed moisture content exceeds






26314. A concrete using an air entrained cement






26315. Mycorrhizal association is present in





26316. Placing of concrete should preferably be done at a temperature of






26317. The aggregate impact value of the aggregate used in





26318. The maximum percentage of chemical ingredient of cement is that of






26319. A symbiotic association between a fungus and an alga is





26320. Sand generally contains salt if it is obtained from:






26321. The impurity of mixing water which affects the setting time and strength of concrete, is






26322. The term Edaphic factor refers to





26323. Di-calcium silicate (C2S)






26324. On a grading curve, the gap grading is represented by






26325. Bulking of sand is





26326. Curing of pavements, floors, roofs and slabs, is done by






26327. The term Ecotone is defined as





26328. The surface where two successive placements of concrete meet, is known as






26329. An excess of flaky particles in concrete aggregates






26330. 1.S.I. has specified the full strength of concrete after






26331. For given workability the grading requiring the least amount of water is one that gives






26332. The minimum percentage of chemical ingredient of cement is that of






26333. The specifications of a cement bag for storage, are






26334. The bulk density of aggregates, depends upon





26335. The bacteria found in the root nodules of leguminous plants are





26336. Horizontal construction joints in concrete walls are generally provided at





26337. National Animal of India is designated by the Scientific name of





26338. For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is






26339. The concrete mix which causes difficulty in obtaining a smooth finish, possess






26340. Le-Chatelier's apparatus is used for testing





26341. 'Ware house pack' of cement means






26342. In the method of voids for determination of the quantity of cement paste, it is assumed that






26343. If a grading curve is horizontal bet-wen the portions of 20 mm I.S. Sieve and 4.75 mm I.S. Sieve, the graded aggregates do not contain





26344. The size of fine aggregates does not exceed






26345. An aggregate is known as cyclopean aggregate if its size is more than






26346. The main object of compaction of concrete, is:





26347. ’Lac’is obtained from the secretion of





26348. Particles of 0.002 mm size are that of





26349. For quality control of Portland cement, the test essentially done is






26350. If 1500 g of water is required to have a cement paste 1875 g of normal consistency, the percentage of water is,






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