self curing concrete ppt

EXPERIMENTAL STUDY ON SELF COMPACTING CONCRETE

Concrete is a mixture of cement, sand, gravel and water which dries hard and strong and is used as a material for building. Concrete has to be heavily vibrated for flow into very intricate forms or forms that have a lot of reinforcing bars. Hence to overcome these defects the self-compacting concrete is used. Self Get price

Self Compacting Concrete

Self-compacting concrete is a recent development that shows potential for future applications. It meets the demands placed by the requirements of speed and quality in concrete construction. Based on current research and available knowledge about SCC presented in this paper, the following trends are emerging: Get price

Self

The seminar report on self-compacting concrete which explains the mix design, advantages and disadvantages, applications, properties,process of making self-consolidating concrete, theoretical and experimental studies with test results. Download the latest PDF and PPT on slideshare for civil projects. Get price

Prefabricated Structures Prefabrication

Mar 16, 2017casted with controlled cement concrete in moulds. This requires certain stages of preparation. They are Casting, Curing, Transportation and erection.. Casting: – Precast components are casted with controlled cement concrete in moulds of required shape and sizes. The vibrator is used to vibrate concrete and this removes any honeycombing inside the components. Get price

03 39 00 Concrete Curing

A. Perform curing of concrete by curing compound, by moist curing, by moisture-retaining cover curing, or combinations thereof, as herein specified. B. Provide moisture curing by one of the following methods: 1. Keep concrete surface continuously wet by covering with water. 2. Get price

6 Types of Concrete Cracks and What They Mean

Although concrete is a very strong building material, it does have its limits. Placing excessive amounts of weight on top of a concrete slab can cause cracking. When you hear a concrete mix has a strength of 2000, 3000, 4000, or 5000+ PSI, it is referring to the pounds per square inch it would take to crush that concrete Get price

Articles

Self-healing concrete is a product that will biologically produce limestone to heal cracks that appear on the surface of concrete structures. Specially selected types of the bacteria genus Bacillus, along with a calcium-based nutrient known as calcium lactate, and nitrogen and phosphorus, are added to the ingredients of the concrete when it is Get price

Best Practices Guidelines for Self

Self-Consolidating Concrete (SCC), also referred to as self-compacting concrete, is able to flow and consolidate on its own. At the same time it is cohesive enough to fill spaces of almost any size and shape without segregation or bleeding. This makes SCC particularly useful wherever placing is Get price

Self Compacting Concrete

Self-compacting concrete is a recent development that shows potential for future applications. It meets the demands placed by the requirements of speed and quality in concrete construction. Based on current research and available knowledge about SCC presented in this paper, the following trends are emerging: Get price

Ettringite Formation and the Performance of Concrete

Feb 28, 2000found in samples taken from concrete in service, especially in concrete from moist environments. Secondary ettringite is not detrimental to concrete performance. [Concrete in photo exposed to phenolphthalein stain to highlight features.] Fig. 3. This is a photomicrograph of a mortar sample that had been stored in water for six years at 20 C. Get price

CONCRETE BASICS A Guide to Concrete Practice

Concrete Basicsaims to provide a clear, concise explanation of all aspects of making quality concrete; from the Materials and Properties involved through Planning, Preparation, Finishing and Curing. Concrete Basicsaddresses the needs of unskilled and semi-skilled persons undertaking general concreting projects including home and handyman projects. Get price

Various Steps Involved In Concreting Process

Concrete can be transported to the site location in two ways. Manual Transportation. Mechanical Transportation. Compaction: Compaction is the process in which the air bubbles are eliminated from the freshly placed concrete. It is required to increase the ultimate strength of concrete by enhancing the bond with reinforcement. Curing: Get price

Best Practices Guidelines for Self

Self-Consolidating Concrete (SCC), also referred to as self-compacting concrete, is able to flow and consolidate on its own. At the same time it is cohesive enough to fill spaces of almost any size and shape without segregation or bleeding. This makes SCC particularly useful wherever placing is Get price

Types of Cracks in Fresh and Hardened Concrete

Concrete may crack with time as the result of slowly developing expansive reactions between aggregate containing active silica and alkalies derived from cement hydration, admixtures, or external sources (e.g., curing water, ground water, alkaline solutions stored or used in the finished structure). Get price

Self curing concrete

Jan 03, 2015Self curing concrete 1. Prepared by: ABHISHEK.K 11241A0132 2. What is curing of concrete? • Curing is the maintenance of a satisfactory moisture content and temperature in concrete for a period of time immediately following placing and finishing so that the desired properties may develop. • Curing has a strong influence on the properties of Get price

Civil Engineering Seminars: May 2013

Self Curing Concrete.ppt. Self Curing of Concrete. Posted by Dr. Sujay Raghavendra N at 4:37 PM No comments: SELF CURING CONCRETE.doc. SELF CURING CONCRETE. Posted by Dr. Sujay Raghavendra N at 4:36 PM No comments: Tilt-Up Construction.ppt. Tilt Up Construction. Posted by Get price

A Review of self compacting concrete

HEAT CURING OF SELF-COMPACTING CONCRETE (SCC) Michael Stegmaier. Otto-Graf-Journal. 183 Vol. 16, 2005 HEAT CURING OF SELF-COMPACTING CONCRETE (SCC) In these study, the compressive strength, the splitting tensile strength and the static Youngs modulus were determined and compared to reference concretes that had been stored for 3 days under Get price

What are Properties of Hardened Concrete

Mar 16, 2017Bridge Pier Substructure. Compressive Strength: Compressive strength of concrete is usually defined as characteristic compressive strength (fcu / fck).Which is obtained by cube test or cylinder test of concrete specimen after 28 days of curing. Compressive strength of concrete varies from 10N/mm2 to 500N/mm2 for ultra high strength concrete (2000-8000 psi). Get price

A STUDY ON CARBON NANOTUBE (CNT) IN CONCRETE

mix were 15% and 36%, respectively, at 28 days of curing. Cement-CNT composites with 0.75% CNT showed almost the same compressive and splitting-tensile strengths as that of the control mix. 2. The control mix and all cement-CNT composites showed considerable strength (mechanical) gain from 7 days of curing to 28 days of curing. Get price

Self Curing of Concrete.

What is Self curing concrete ? S.C.C is the one which can cure itself by retaining its. moisture content. A concrete can be made to self cure either by adding curing admixtures or by the application of curing compounds. S.C.C by adding admixtures Various admixtures used are concure WB, conplast NC, conplast C N and conplast S D 110 etc Get price

seminar report on self compacting concrete

Apr 18, 2015Shear walls are vertical elements of the horizontal force resisting system. Shear walls are constructed to counter the effects of lateral load acting on a structure.In residential construction, shear walls are straight external walls that typically form a box which provides all of the lateral support for the building.When shear walls are designed and constructed properly, and they will have Get price

Hot Weather Concreting

Concrete Curing is a hydration process and requires water to be present. Forms should be sprayed with water to keep them damp, or they will absorb part of the mixing water. As soon as the concrete has set sufficiently to prevent marring the surface, it should be covered with straw, burlap, or other materials such as sand and kept moist for Get price

Concrete Curing Compound

Curing by water not more than 11 deg C cooler than the concrete is one of the most efficient way for curing concrete. The curing should begin as soon as possible after the casting of concrete. Any delay in curing will lead to evaporation of mixing water and the early drying may lead to shrinkage and cracking of concrete. Get price

Self

Self-compacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration. Self-compacting concrete development must ensure a good balance between deformability and stability. Also, compactibility is affected by the characteristics of Get price

Curing of Concrete

Curing of concrete is the term used for the job of keeping the fresh concrete wet till the desired purpose is achieved.. Cement concrete has to be kept wet for several days after its placing to ensure complete setting and hardening of the cement.. Concrete derives its strength by the hydration of cement particles. The quality of the product of hydration and consequently, the amount of gel Get price

Concrete Manufacturing Process in modern construction

Mar 21, 2018Curing is to provide best strength and hardness to concrete. It is the next step after placing of concrete. Curing helps concrete to gain strength early. The concrete requires a moist and wet environment to gain full strength. Proper curing of concrete leads to increase the strength of concrete. And prevent cracking at surface dries. Get price

COMPARISON OF DIFFERENT CURING EFFECTS ON

concrete surface. The benefits of curing concrete are significant, as can be the problems if curing is not performed as detailed above. In order to investigate the influence of curing conditions, on the compressive strength of concrete cubes, for each mix design, three cubes were chosen for every curing Get price

Self Consolidating Concrete

Curing is important for SCC since it is so often a low water-cement ratio mix. Low water mixes can develop autogenous shrinkage, where the unhydrated cement consumes all of the water in the concrete matrix. Wet curing is best, but at least apply a curing compound to protect the surface from drying out. SELF-CONSOLIDATING CONCRETE FOR DECORATIVE Get price