CONCRETE TECHNOLOGY1.2.The breaking up of cohesion in a mass of concrete is calledSegregation 3. The Workability of Concrete is defined as the ease with which it can be mixed, transported and placed in position in a homogeneous state4. The separation of water or water-cement mixture from the freshly mixed concrete is known as Bleeding5. The continuous strain, which the concrete undergoes due to application of external loads, is called Creep6. A ood Concrete should be subjected to!inimum Creep7. Effects of Segregation8. "arshness in Concrete is due to the#xcess of !iddle si$e particles9. %n &ime Concreting, lime is used asBinding !aterial10. The type of &ime used in Lime Concrete is"ydraulic &ime11. A ood Concrete should have!inimum Thermal #xpansion12. The &ime Concrete has less strength as compared to Cement Concrete13. he usual proportion of ingredients in 'lain Cement Concrete(')C)C* is+ part , +)- to . part , / to +0 part14. he usual proportion of ingredients in 1einforced Cement Concrete(1)C)C* is+ part : + to 2 part : 2to 3 part1!. 4erro-Concrete is another name "iven to1einforced Cement Concrete(1)C)C*16. 1einforced Cement Concrete(1)C)C* is e#uall$ strong in ta%in"Tensile, Compressi5e and Shear Stresses17. 'lain Cement Concrete(')C)C* is strong in ta%in"Compressi5e Stress18. he cement concrete in &hich high compressi5e stresses are artificially introduced before its actual use, is called're-stressed Cement Concrete19. The 're-stressed Cement Concrete can take up high tensile and compressi5e stresses without ofCracks20. 'or heat and sound insulation purposes, &e shall useAir-entrained Concrete21. he cement concrete, from which entrained air and excess water are remo5e after placing it in position, is called6acuum Concrete22. he remo5al of excess air a(ter placin" concrete helps in increasing the strength of concrete b$+- to 27823. he cement concrete prepared by mixing aluminium in it, is calledAir-entrained concrete9Cellular concrete9Aerated concrete24. he light weight concrete is prepared b$:sing coke-bree$e, cinder or slag as aggregate in the concrete2!. he sound absorption coefficient o( light weight concrete is nearl$2se than that of ordinary concrete26. Cement Concrete is%mpermeable to moisture27. )n making precast structural units (or partition and wall lining purposes, the concrete should be&ight Weight Concrete28. he concrete without any reinforcement has&ow Tensile Strength29. Segregation o( concrete decreases the strength of concrete30. he function of aggregates in concrete is to serve as4iller31. Calcareous material used in the manufacture of cement consists of&ime Stone ; Chalk ; Shells32. )n the manufacture of cement, the dry or wet mixture of calcareous and argillaceous materials is burnt in a1otary -ettin" time testb>-oundness estc>5ompressive stren"th est71. )n @icatAs apparatus, the diameter o( @icat plun"er is10 mm72. he len"th o( @icat plun"er in @icatAs apparatus varies (rom40 to !0 mm73. he percenta"e o( &ater (or ma%in" a cement paste o( normal consistenc$ varies (rom2! to 3!174. o per(orm the initial settin" time test, the &ater is added to the cement at the rate o(0.8!0 b$ &ei"ht o( cement