Preliminary- The work of sand faced cement plaster shall be carried out after masonry joints are raked out to a depth of 20 mm and the walls are well watered. trailer • Surface contact with concrete shall be free from adhering grout, nails, splits and other defects. Brick work 79 11. In plain cement concrete coarse aggregate should be hard durable and free from impurities. ... Statistics. The thickness of first coat shall be nowhere less than 12 mm, the first coat shall be well watered at least for 7 days. Reinforced concrete (RC), also called reinforced cement concrete (RCC), is a composite material in which concrete's relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength or ductility. 0000000653 00000 n 0000003854 00000 n ASTM's cement and concrete standards are instrumental in the evaluation and testing of concrete, cement, and aggregates. 0000007261 00000 n Construct. Fibre Reinforced Concrete (FRC) is gaining an increasing interest among the concrete community for the reduced construction time and labor costs. For this reason, many structural elements are now reinforced with steel fibres as partial or total substitution of conventional reinforcement (rebars or welded mesh, [ … 0000001659 00000 n Coarse Aggregate- The coarse aggregate shall consist of 67% of black trap metal carrying in size from 20mm to 40mm and 33% of black trap metal carrying in size from 20mm to 6mm. Ready mixed concrete for driveways is normally specified in accordance with American Standards for Testing and Materials specification ASTM C-94. 0000002544 00000 n RCC SPECIFICATIONS • Shuttering shall be done using seasoned wooden boards of thickness not less than 30mm. Rubble Stone Hard Core 83 13. The material may also be useful in a variety of special grouts and mortars and, when used with an appropriate activator, as the principal cementitious material in some applications. CEMENT: Cement belongs to the elementary and most vital component of cement concrete. The mortar of one cement bag shall only be prepared at a time and it shall be prepared on a water tight platform or in a steel trough. Pipe manufactured according to this specification shall be of three classes identified as Class A-II, A-III, and A-IV. The concrete from the drum shall be placed on a water tight platform. The unclean aggregates shall have to be screened and washed before use. Reinforcement- All reinforcement shall be of steel which shall comply with the standard requirements. %%EOF Before laying the concrete, the reinforcement shall be got approved by the engineer. For cubical specimens, in no case shall the concrete be subjected to less than 35 strokes per layer for 15 cm cubes or 25 strokes per layer for 10 cm cubes. <<1EC04CF2CE4FDA489D807A6198E595EB>]>> AWWA C300, C302 and AWWA Design Manual M9 Concrete Pressure Pipe. drawings precast reinforced concrete crown units and link slabs shall be designed and supplied in accordance with rta qa specification r16 precast reinforced concrete box culverts 32 2 cover sheets, in this work a detailed study of optimum design of reinforced concrete box culvert was carried out Procedure for First Coat- The first coat for sand faced cement plaster shall be of cement mortar in proportion 1:4 one part of cement to four part of clean, coarse and angular river sand by volume. Measurement- The payment shall be made for superficial are covered. Reinforced cement concrete (R.C.C) is the combination of ordinary concrete with the reinforcement to increase its compressive and tensile strength to a great extent. Wood work 111 15. The heating that occurs in the kiln transforms the raw materials into new chemical compounds. Size of sand particles should be such that it passes through 4.75mm sieve. Form work 56 s p o t S 3 r 6 e t a W . Mixing should be done by hand mixing or by machine mixing. Water : Water should be clean and free from alkaline and other acidic matter. Sand should be clean, free from dust and organic matters. • All the joints are perfectly closed and lined up. Binding Materials; Road Pavement; Mechanics. It's the best way to discover useful content. 5. The sand to be used in the mortar for the second coat shall be perfectly screened so that sand of uniform size shall appear on the surface. 0000002621 00000 n Find answer to specific questions by searching them here. The sand shall be washed, if there is any trace of earth in it. Stone Masonry 81 12. Introduction; Probability; Home > Detailed Specifications of Cement Concrete. Note 1-The material described in this specification may be used for blending with portland cement to produce a cement meeting the requirements of M 240M/M 240 or as a separate ingredient in concrete or mortar mixtures. Laying and Curing- Before start laying of concrete in position; the centering shall be well watered. The spacing of bullies shall not be more than 120cm centre to centre. 0000001133 00000 n The concrete shall be laid in forms and tapped in such a way that no honeycomb surface appears on removal of the forms. Detail specification of lime concrete in foundation are as below:-. The second coat shall be applied on the first coat at least after 7 days of completion of first coat. The first coat of plaster shall be uniformly applied in the best workmanship manner after watering the surface of walls in advance and putting dots and preparing screeds for maintaining uniform thickness of plastered surface. After completion of the second coat, the surface shall be kept well watered at least for 15 days. Structural steel 67 10. 0 0000001355 00000 n The cement concrete shall be kept well watered for at least 20 days. While writing detailed specifications, explain The specifications of every single component should be narrated briefly at the time of formulating detail specifications. Stone dust can also be used as fine aggregate in cement concrete, but … 112 17 A steel cage and or steel cylinder assembly is encased in cement-rich concrete using a vertical cast process. In the former case, the mixing drum shall be turned at least for 1.5 minutes after all the ingredients are added and the drum shall be completely emptied every time. Procedure for Second coat- The second coat of sand faced cement plaster shall be carried out in CM of proportion 1:1 and shall be of thickness 8mm. Laying and compaction should be done before setting of concrete i.e. 1. 2. 112 0 obj <> endobj The cement concrete shall be kept well watered for at least 20 days. Concrete can have different properties depending upon the mixture that is used in creating it, which contains cement, chemical admixtures, and aggregates. Bar bending schedules showing now the reinforcement bars are to be bend a real so provided. The minimum compressive strength of cement should be 175 kg/ m². Detail specification. It shall be deep cherry red or copper colour and shall be clean, free from dust, dirt and other foreign matters. RWD Tender For Civil Works Roads Mmgsy Ndb Brrp 320 Benipur , Due Date: 11-01-2021 ,Tender Value: 50037100 ,City : BENIPUR, Location: Bihar Tender Notice 26489348 0000003890 00000 n In the most general sense, portland cement is produced by heating sources of lime, iron, silica, and alumina to clinkering temperature (2,500 to 2,800 degrees Fahrenheit) in a rotating kiln, then grinding the clinker to a fine powder. This paper compares and summarizes design specifications and construction requirements, with a specific focus on “nominally reinforced rubble stone masonry (NRM) with cement mortar and wooden diaphragms in seismic areas.” Proportion : The proportion of the cement concrete should be 1:2:4 or as prescribed. The props to be used for centering shall be of timber bullies. A-3 SPECIFICATIONS, REINFORCED CONCRETE CONSTRUCTION Revised 2005/01/17 Page 2 of 31 3.6.5 Similar separate storage shall be provided for packaged cement. 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