Cement concrete is widely used in industrial plants, civil infrastructures, wastewater treatment plants and pipelines. In rainy areas, concrete should be covered to protect from water for 24 hours. Care is done not to let the water collapse the banks and flow out. Plain cement concrete provides a leveled surface for foundation, and flooring typically cement , sand and aggregate in a proportion of one is to three is to six or one is the four is to eight is used. Answer (1 of 12): Plain Cement Concrete (PCC) is also called as Cement Concrete (CC) or Blinding Concrete.It is used for leveling, bedding for footings, grade slabs, concrete roads etc.PCC is used to provide non-porous, rigid, impervious, firm and leveled bed for laying RCC, where earth is soft a. Lighter colored materials (such as concrete) generally have a higher solar reflectance. It is occasionally called mass cement concrete or cement concrete. (ii) Laying of base concrete: The base concrete used under floors may be cement concrete or lime concrete laid to a thickness varying from 75 to 10 cm. Concrete is the final product resulting from mixing cement, aggregates (including sand), water, and mixtures. Plain cement concrete is made using the following materials Coarse Aggregate materials: Depending on where they are to be utilized, the size of the aggregate used for PCC ranges from 10 to 12 millimeters to 40 millimeters. The Grade of PCC shall be a minimum of M10. For plain cement concrete, pozzolana cement (P.P.C.) Expected cover to bottom support is secured, as cover blocks rest on a specific PCC. PCC full form is plain cement concrete. Exact size and thickness should be ensured for PCC shuttering. PCC in construction is used to make a level bed for footing. 1. A measured quantity as per the w/c (water/ cement) ratio to administer when mixing in a bucket. A 10 to 15 cm. The design mixes commonly used for Plain Cement Concrete (PCC . There are two means to achieve a perfect mixing of PCC either manually or through machines : Note: The quantity of water to be used for each 50kg cement mix to give the desired consistency is as follows: PCC plays an important role by providing a protective base layer for the structure above it. ~ Add the rest of the water to get the required consistency. There are two terms used on any construction site RCC (Reinforced Cement concrete) and PCC (Plain Cement Concrete) work. PCC should be able to resist climatic and chemical actions to be durable. ~ Water should be free from oils, acids, alkalis, salts, and vegetable growths. Not more than 34 lit 1:3:6 mix. All Rights Reserved. Water should be mixed with a bucket, in a measured quantity, as per w/c (water/ cement) ratio. However, ready mix concrete is also gaining popularity nowadays. Get Quote. Sand quality must be checked and examined for any dust, dirt, or organic matter while ensuring that sea sand shall not be used. b. M30 Grade. Plain or Ordinary Concrete. d. Shuttering used in the PCC work should have the same size and thickness. Plain cement concrete is commonly used for foundations. Ease in the placement of steel cages and increased productivity. Plain cement concrete is a hardened mass obtained from a mixture of cement, sand, gravel, and water in definite proportion. The surface is laid for over 24 hours is to be cured by submerging the surface with water of about 25mm depth or covering the surface with weight absorbent materials. PCC is used to provide non-porous, rigid, impervious, firm and leveled bed for laying RCC, where earth is soft and yielding. 3. Do not pour concrete in the pit from a height of more than 1.5 m. Do not allow extra cement mortar on top of PCC. Also, a determining factor in the characteristics of concrete is the water-to-cement ratio. Water used shall be clean and reasonably free from injurious quantities of deleterious materials such as oils, acids, alkalis, salts and vegetable growth. Preparation of Plain Cement Concrete (PCC), 10 Innovative Ways to Use Technology in Education. The mixing shall be thorough to have a plastic mix of uniform colour. In hand mixing of concrete, the uniformity of the mixture is difficult to achieve and requires special care and effort. Curing shall be done for a minimum period of 14 days. If steel is kept in the concrete, then it is called RCC. Plain concrete is a brittle material with low tensile strain and strength capacities. ~ The sand used should be hard, sharp, and angular. Several factors influence the method of concrete mixing, such as. The dry materials shall be mixed in the mixing drum for at least four turns of the drum after which the correct quantity of water shall be added gradually while the drum is in motion. If the water table is high, de-watering should be done at the same time as concrete. When mixing materials by volume, coarse aggregate and sand should be measured using a measuring box that is 30 cm x 30 cm x 38 cm in size, which is equivalent to 1/30 m3 (or 0.035 m3) of cement. Based on the specification or necessity, the proportioning is carried out. Either volume batching or weight batching can be used to measure the material. Plain Cement Concrete (PCC) is a construction material generally used as a binding materials and is composed of cement, (commonly Portland Cement) and other cementitious materials such as fly ash and slag cement, aggregate (generally a coarse aggregate made of gravels or crushed rocks such as limestone or granite, plus a fine aggregate such as sand), water, and chemical admixtures. Typically, 1m3 of concrete is made up of 350Kg of cement, 700Kg of sand, 1,200Kg of chippings and 150 Litres of water. In order to make a Plain Cement Concrete (PCC), you'll need the following materials: 1. Concrete grades M5, M10, M15 are used for PCC (plain cement concrete) work like leveling course, for bed footing, etc. 2.The effective depth of RCC members is . Sometimes hand compaction is done with the help of wood. Finished mixing is particularly useful in concrete congested areas or in road construction, where little or no space is available for mixing plants or for storage of aggregates. Generally, potable water shall be used having a pH value not less than 6. Due to the shrinkage, the crack increases and the strength decreases. Concrete does not adhere to the ground soil (clay); however, PCC serves as a soil barrier and adheres well to structural grade concrete that has been overlaid. So this type of concrete is basically weak in tension but strong in compression. Height should not be more than 1 m. For deeper footings, use chute of longer length and adjust . A plain cement concrete with a mix ratio of 1:2:4 is normal concrete with cement content about 14%. Plain cement concrete is the mixture of cement, fine aggregate (sand) and coarse aggregate without steel. 5. (for light exposure). A mixing drum is to be used to mix the dry materials. 8.5meters Plain Cement Concrete Poles, For Construction 1,500. a. Plain Cement Concrete or PCC stands for a composite material that is applied for building up different types of civil engineering structures. ~ The mixed PCC is then flowed out for utilization. It should be ensured that in the case of rainy weather the freshly laid concrete should be protected by using a cover. That's why these are preferred in the construction of roads and as a Bed for footings, flooring, etc. How to find a Construction Partner for a plot in Bangalore? It is used for leveling, bedding for footings, grade slabs, concrete roads etc. Save my name, email, and website in this browser for the next time I comment. b. PCC work without formwork should not be allowed. PCC is an important component of a building which is laid on the soil surface to avoid direct contact of reinforcement of concrete with soil and water. A measured quantity of dry coarse aggregate, fine aggregate and cement shall be placed in their respective hoppers. ~ Aggregates should be well graded so that the voids do not exceed 42%. Things needed of build Plain cement concrete: Hand mixing is the process of manually mixing the ingredients of concrete without the machine of the mixer. Unit Weight of concrete in lb/ft3 Typical concrete unit weight measured in pounds per cubic foot, which is indicated as lb/ft3, so their unit weight in lb/ft3 for PCC (plain concrete cement) is around 133 pounds per cubic foot in dry mix condition which is approximately equal to 3600 lbs per yard, 150 lb per cubic foot or 4050 lb per yard in wet mix and for RCC (reinforced cement concrete) is . Standard grades of concrete a. M25 Grade Mixing Ratio is 1:1:2 ( 1cement part: 1 sand part:2aggregate part). PCC should be prepared in small quantities that can be used before the initial setting time of the cement starts. Cement, sand, and coarse aggregate are mixed in appropriate amounts with water in plain cement concrete. For PCC work, the minimum concrete grade used is M 10. Rate analysis for Plain Cement Concrete 1:4:8 (M7.5) / Rate analysis for PCC A P.C.C mix of 1:1.5:3 is an example of rich concrete with a cement content of 18%. Concrete is a construction material composed of cement, fine aggregates (sand), and coarse aggregates mix with water which hardens with time. The thickness of the plain cement concrete would usually be 100 to 150 millimeters. It can be seen that the strengths of plain cement concrete and cement-silica fume concrete cured at 45[degrees]C immediately after preparation (without precuring) are lower than those of samples subjected to standard curing conditions, which is consistent with the trend of [w.sub.n] content and the results of other studies [26]. The whole mass is mixed dry by working with spades till the entire mass becomes uniform in colour. Concrete Grades M 25, M 30, M 35 are used for RCC (reinforced cement concrete) such as foundations, footing columns, beams, slabs, etc. The ratio of essential constituents may be varied within wide limits. Volume batching or weight batching is the standard measurement technique of material. The following are the general specifications for materials used in PCC:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'constructionor_com-medrectangle-4','ezslot_4',109,'0','0'])};__ez_fad_position('div-gpt-ad-constructionor_com-medrectangle-4-0'); The coarse aggregate for the PCC must be made of hard, shattered stone that is similar to granite and free of dust, grime, and other extraneous materials. This method of mixing is very useful for many places i.e., in a congested area, at night in concreting work, large construction sites, etc. It is simply a mixture of cement, sand, and aggregate containing a suitable proportion of water. Water acts as a lubricant for the aggregate and makes the concrete workable. 6. All the coarse material should be retained in a 5mm square mesh and should be well graded so that the voids do not exceed 42%. Portland Pozzolana cement (P.P.C) is normally used for plain cement concrete. When PCC work is to be carried out underground, loose materials from the side of the pits or trenches should be removed. In volume batching, coarse aggregate and sand shall be measured by measuring box of 30cmx30cmx38cm of a suitable size equivalent to one bag cement of 1/30 m. Sand shall be measured on the basis of its dry volume. Lastly, water is added and the mixture is mixed properly to gain an even colour and consistency. Connect with us today and let experts take care of all your construction needs. Usually, this is within 30 minutes of adding water to the dry mixture. It is called Plain Cement Concrete, as, at this ratio no reinforcement is introduced and this type of concrete can be used for simpler works such as ground floor platform or for any other flat surface area that won't be undergoing any intense stress/strains. We and our partners use cookies to Store and/or access information on a device. It is formed by mixing the basic components like cement, fine aggregate (generally sand) and coarse aggregate (generally stone pieces) in desired ratios. A screen of 5 mm square mesh is to be used to Fine Aggregate. The first use of concrete was by the Roman Empire. This is a major disadvantage of plain concrete. 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How to convert 1 cubic meter of plain cement concrete to tonnes? ~ The size of sand should be smaller than 5 mm (i.e. The most important binding materials are cement and lime. Hopper is used for placing the cement, fine aggregate, and dry coarse aggregate in the specified measured quantity. Concrete ratio is 1:2:4. Apart from this concrete has low fracture toughness. The dry ingredients must be blended for at least four spins in the mixing drum before the necessary amount of water is added gradually while the drum is still in motion. These mix ratios are defined based on the type of construction and power required. There may be needed for a needle vibrator and a surface vibrator for compaction. Machine mixing is the process of mixing the components of concrete with a concrete mixer machine. When you join you get additional benefits. Cement is equal to 1/1 + 2 + 4 x wet volume x 1.54 , 3. 1. Plain cement concrete (PCC) is a hardened mass obtained from a mixture of cement, sand, gravel, and water in definite proportions. Different constructions require different types of concrete admixture. The ratio of its components is given below: The penalty ratio for coarse aggregates should be adjusted from the upper limit to the progressively lower limit, as the grading of the fine aggregate becomes finer and the maximum size of the coarse aggregate becomes larger. ( E.g. Vastu factors to consider for House Construction in India, Floor Plan for a House and its Importance, Plastering in Construction - Constructure, RCC Column Process in Construction (2021) - Constructure, Concrete covering in Construction - Constructure.in. ~ Sand should be free from dust, organic particles, etc. No sacking, ramming, or hammering is allowed when measuring the aggregate. You will receive a link and will create a new password via email. Plain Cement Concrete is a concrete without steel reinforcement. Richer PCC requires less water and vice versa. In this article you'll learn: The placing of concrete means the process of depositing to concrete in its required place and position as fast as possible. The sand layer a consolidated and dressed to the required level and slope. Selection and preparation of ingredients. The water that is utilized must be clear and reasonably devoid of harmful substances including oils, acids, alkalis, salts, and vegetative growth.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'constructionor_com-banner-1','ezslot_6',111,'0','0'])};__ez_fad_position('div-gpt-ad-constructionor_com-banner-1-0'); In general, drinking water must have a pH level of at least 6. Concrete production is the process of mixing different ingredients together water, aggregate, cement, and any additives to produce concrete. The total time taken for the mixing of concrete should not exceed 3 minutes. It is necessary to use a steel platform or a clean, watertight slab as the base for mixing the concrete.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'constructionor_com-large-leaderboard-2','ezslot_8',112,'0','0'])};__ez_fad_position('div-gpt-ad-constructionor_com-large-leaderboard-2-0'); After completely combining sand and cement, coarse aggregate is added. PCC is laid on the soil surface and acts as a shield for the reinforced concrete against direct contact with soil and water. The PCC must not be used without formwork. By serving as a foundational layer of protection for the building above it, PCC performs a significant function. A 5mm square mesh is to be used to retain any coarse material, which is graded by the standard of 42%, so it does not exceed the voids. Mixing of concrete without a mixer is used only for small works where the need for concrete is less and quality control is less important. Water. 2. ~ Sea sand is unsuitable for concrete because of its weak bonding capacity. Concrete Its Materials, Properties, Tests & Cost, Transportation of Concrete (Top 9 Methods), What is Batching of Concrete? Compaction of Cement Concrete Road : After the concrete is placed in its position, it should brought in its proper position by heavy screed or tamper fitted with suitable handles. Sand should be quantified using its dry volume. Concrete is good enough in compression. Concrete floors are a great alternative to linoleum, carpet, wood, tile, stone or marble flooring. Types of concrete 1. Never allow the use or use of gameless for batching, that is, the measurement of total quality. Note: To achieve the desired consistency, 50 kg of cement must be mixed with the following amount of water: Dense concrete is generated by extensively vibrating the PCC using mechanical vibrators as it is placed out in layers no thicker than 150mm. Read More: Concrete Its Materials, Properties, Tests & Cost. National Pole Industries. Ramming, hammering, or sacking shouldnt be done while measuring the aggregate. What is the tolerance for compression test results of concrete, according to the standards? Plain cement concrete (PCC) is high in compression and very low in tension. Plain Cement Concrete (PCC)- Work Procedure, Advantages of Laying Plain Cement Concrete, Work Procedure of Excavation at Construction Site, Anti-Termite Treatment Types, Chemicals, Prevention and Safety.