Excessive evaporation of water internal or external from fresh concrete should be avoided. Project report study on self compacting concrete using. One of the remedial process is bacterial concrete or selfhealing concrete the process of self healing of cracks or self filling up of cracks by the help of bacterial reaction in the concrete after hardening is known as self healing concrete. The chemicals should have abilities to reduce evaporation from solution and to. Curing begins immediately after placement and finishing so. Curing begins immediately after placement and finishing so that the concrete may develop the desired strength and. Prepare a concrete mix design for m30 grade concrete as per is 102622009. External self curing concrete is the one which can cure itself by retaining its moisture content within the concrete by the application of curing compounds on the surface of the concrete. Selfcompacting concrete applications and advantages. Chemicals to achieve selfcuring some specific watersoluble chemicals added during the mixing can reduce water evaporation from and within the set concrete, making it selfcuring. In 2002 li debuted a precursor concrete material that was bendable but not selfhealing.
Applications of external self curing concrete as a spray applied membrane to retain moisture in concrete for effective curing. Curing takes place immediately after concrete placing and finishing, and involves maintenance of desired moisture and temperature conditions, both at depth and near the surface, for extended periods of time. Pdf mechanical properties of concrete depend on the curing. May 09, 20 powerpoint presentations and detailed seminar reports. An average increase in the compressive strength of 12% was found when selfcuring concrete of peg 400 was used in curing than the conventional curing of concrete. Evaluation of selfconsolidating concrete celik ozyildirim, ph. The investigational study is approved out to examine the use of water retains by. The selfcompacting concrete european project group was founded in january 2004 with.
Shikha tyagi studied on selfcuring concrete and had use peg400 as a selfcuring agent in concrete. There fore each selfcompacting concrete has to be designed for the particular structure to be constructed. Also explore the seminar topics paper on self compacting concrete with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Final report evaluation of selfconsolidating concrete celik. 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. Methods of curing concrete curing types and techniques. Before concrete work begins, ensure the contractor has the required curing materials and equipment onsite. Self compacting concrete seminar report, ppt, pdf for civil. The values of 2% polyethyleneglycol and 15% saturated leca represent the optimum doses as selfcuring agents in concrete. Self compacting concrete seminar report, ppt, pdf for. May 14, 2018 the characteristic of a self curing agent is to reduce the water evaporation from concrete, and therefore they grow the water retention capacity of concrete as compared to the conventionally cured concrete. Internal curing is often also referred as self curing. Pdf physical properties of selfcuring concrete scuc.
Workability, water retention capacity, compressive, splittensile and flexural strength properties of selfcuring concrete. Pdf this paper highlights the effect of curing agent polyethylene glycol peg 400 in. Hence to overcome these defects the self compacting concrete is used. Experimental study on the properties of selfcuring concrete.
This investigation is aimed to utilize the benefits of both self curing as well as self compacting. Self curing or internal curing is a technique that can be used to provide additional moisture in concrete for more effective hydration of cement and reduced self desiccation. Role of concrete curing portland cement association. In a second project hybrid fiber reinforced cementitious materials are studied that can. Selfcuring concrete is one of the special concretes in mitigating insufficient curing. Selfcuring concrete with different selfcuring agents iopscience. Some times works are carried out in place where there is acute shortage of water and the application of water curing is not possible for reasons of economy. The need for adequate curing of concrete cannot be overemphasized. Download civil,construction engineering seminar topic ppt. Experimental study on strength properties of self curing. Selfcompacting concrete has been used in bridges and even on precast sections.
The present study involves the use of shrinkage reducing admixture polyethylene glycol in concrete which helps in selfcuring and helps in better hydration and hence strength. An average increase in the compressive strength of 12% was found when self curing concrete of peg 400 was used in curing than the conventional curing of concrete. This study was carried out to compare among concretes without or with silica fume sf. In the second stage of project, the experimental program was designed to investigate the strength of self curing concrete by adding polyethylene glycol peg. Curing can be described as keeping the concrete moist and warm enough so that the hydration of cement can continue. Selfcuring concrete is the best solution to the problem faced in the desert region and faced due to lack of proper curing. In the present investigation, work strength and workability characteristics of selfcuring concrete are to be better found and which can be compared with conventional concrete of related mix design. 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 fig. In this study strength parameters of self compacting concrete, self curing concrete, self compacted self.
The concrete was cast along the entire lengths of the walls to avoid construction joints. In early stages, water was mandatory for the curing purposes in construction. There fore each self compacting concrete has to be designed for the particular structure to be constructed. If you are unable to download any of the topics mentioned below, you can mail to the admin to get the soft copy of the topic of your interest. Diploma project ideas civil engineering seminar study material. Concrete curing compounds formed a membrane when we applied to fresh concrete. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. Selfcuring concrete help for speed in construction work and having an economical project. Presentation on self curing concrete free download as powerpoint presentation. The present study involves the use of shrinkage reducing admixture polyethylene glycol in concrete which helps in self curing and helps in better hydration and hence strength.
Stephen lane senior research scientist introduction in response to the reduction in the skilled labor force in japans construction industry and the consequential reduction in the quality of construction, researchers at the university of tokyo. Here ordinary portland cement is replaced with 5%, 10%, 15%, 20% and 25% of. Selfcuring or internal curing is a technique that can be used to provide additional moisture in concrete for more effective hydration of cement and reduced selfdesiccation. Self curing is done in order to fulfill the water requirements of concrete whereas self compacting concrete is prepared so that it can be placed in difficult positions and congested reinforcements. Higher cement content andor lower watercement ratio leads to more effective results of selfcuring agents in concrete. Concrete is a mixture of cement, sand, gravel and water which dries hard and strong and is used as a material for building. An experimental investigation of self curing concrete norporat wt poly tyln lyol as s l urn a nt shikha tyagi m. Self curing concrete is the one which can meet the present and future requirements of curing concrete. Curing is defined as maintenance of a satisfactory moisture content and temperature in the concrete for a period of time immediately following placing and finishing so that the desired properties may develop. There are two major methods available for internal curing of concrete. Both peg400 and peg200 are used in the study in 0% to 2% by weight of cement. Self curing concrete scc can cure without using any external curing methods.
However working on the parameters which affect the basic properties of selfcompacting concrete such as plastic viscosity, deformability, flowability and resistance to segregation, selfcompacting concrete may be proportioned. Student, structural engineering part time 202016, bharathidasan institute of technology anna university, tiruchirappalli, tamilnadu, india. The values of 2% polyethyleneglycol and 15% saturated leca represent the optimum doses as self curing agents in concrete. Selfcuring is done in order to fulfill the water requirements of concrete whereas selfcompacting concrete is prepared so that it can be placed in difficult positions and congested reinforcements. Any negligence in in curing will interfere in the strength and durability of concrete.
It was found that peg 400 could help in self curing by giving strength on par. Experimental investigation on selfcuring selfcompacting. Jun 17, 2019 self compacting concrete produces resistance to segregation by using mineral fillers or fines and using special admixtures. One of the most remarkable projects built using selfcompacting concrete is the akashikaikyo suspension bridge. Curing has a strong influence on the properties of hardened concrete. In this study strength parameters of selfcompacting concrete, selfcuring concrete, selfcompacted self. She added 12% of peg400 by weight of cement for m25 and m40 grade concrete. The use of selfcuring admixtures may be very crucial from the point of view that saving of water is a necessity every day every one cubic.
Pdf experimental study on the properties of selfcuring concrete. The concrete specimens are subjected to dryair curing regime 25 c during the experiment. This page contains fiberreinforced concrete frc seminar and ppt with pdf report. It holds short discrete fibers that are uniformly distributed and circumstances oriented. This common problem of cracking in building has many remedies before and after the crack. Fiberreinforced concrete frc is concrete consisting fibrous material which increases its structural purity. The european guidelines for self compacting concrete 1 introduction selfcompacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. In this project, the scc was mixed onsite and pumped through a piping system to the specified point, located 200 meters away. Incorporation of silica fume into concrete mixtures enhances all physical properties. Study and design of self curing concrete for m30 grade tuptewar shriprasad madhavrao 1, unde rajeshwar houshiram, rukare suraj sangappa1.
In the present paper, self curing concrete of m20, m40 and m60 grades are developed using optimized dosage of polyethylene glycol as internal curing agent. She was concluded that the optimum dosage of peg400 for maximum compressive strength was to be 1% for. The improvement in the mechanical properties of self curing concrete scuc was superior while using self curing agent of chemical type polyethyleneglycol compared to aggregate type saturated leca as shown in table 4. Miscellneous civil engineering best project ideas interviews questions for freshers. More elaborately, it can be described as the process of maintaining a satisfactory moisture content and a favorable temperature in concrete during the period immediately following placement, so that hydration of cement may continue until. A measure of the ease by which fresh concrete can be placed and compacted. The self compacting self curing concrete made by partially replacing fine aggregate with the light expanded clay aggregate and fly ash aggregate is described in the paper. This member does not allow the inside moisture to come out of concrete hence, curing occurs. As a result of successful and recent tests and research, have recently put external self curing in the forefront of breakthroughs of ideas of how to make better concrete what is self curing concrete.
Jonkers delft university of technology, faculty of civil engineering and geosciences, department of materials and environment microlab, delft, the netherlands a typical durabilityrelated phenomenon in many concrete constructions is crack formation. Download as doc, pdf, txt or read online from scribd. The results show that the use of selfcuring agent ch. Self compacting concrete scc developed by professor hajime okamuraof kochi university of technology, japan, in1986 during his research, okamura found that the main cause of the poor durability performances of japanese concrete in structures was the inadequate compacting of the concrete in the casting operations. Concrete in which the mixing water is restricted by means of some chemical compounds, to go out from the concrete body is known as self curing concrete. Selfhealing of concrete a new technology for a more. Jul 16, 2017 self curing concerete in this we use some admixtures like sra shrinkage reducing admixture propylene glycol type i. The characteristic of a selfcuring agent is to reduce the water evaporation from concrete, and therefore they grow the water retention capacity of concrete as compared to the conventionally cured concrete. Civil engineering room free download project of php,java. Concrete curing compound types, properties, applications. Polyethylene glycol peg is one of the chemical agents which minimizes the loss of water and also attracts moisture. With the growing scale of the project conventional curing methods have proven to be a costly affair as there are many practical issues and they have been replaced by membrane curing compounds and self curing agents up to some extent as they can be. The first method uses saturated porous lightweight aggregate lwa in. This investigation is aimed to utilize the benefits of both selfcuring as well as selfcompacting.
The investigational study is approved out to examine the use of water retains by admixtures as self curing agent. The chemical agent peg is used with different percentage. Internal curing of concrete by the use of presaturated lightweight aggregates or polyethyleneglycol is well established method of counteracting selfdesiccation and autogenous shrinkage. This curing compounds possess waxes, natural resins, synthetic resins and solvents of high volatility.
Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format. The simplest way of self healing is to ensure that extra dry cement in the concrete exposed on the crack surfaces can react with water and carbon dioxide to heal and form a thin white scar of calcium carbonate. We hereby declare that the 8th semester project report for the project entitled study on self compacting concrete using industrial waste materials submitted in. This project deals with the self compacting concrete where the cement is partially replaced with flyash and silica fume. In the present investigation, work strength and workability characteristics of self curing concrete are to be better found and which can be compared with conventional concrete of related mix design. Workability, water retention capacity, compressive, splittensile and flexural strength properties of self curing concrete.
Extensive testing of physical and mechanical properties of scc was carried out during the past decade. The physical properties of concrete were evaluated at different ages, up to 28 days. Concrete has to be heavily vibrated for flow into very intricate forms or forms that have a lot of reinforcing bars. Presentation on self curing concrete concrete chemistry.
Estimation of desired properties of self curing concrete. Fiberreinforced concrete seminar ppt with pdf report. Bacterial concrete or self healing concrete for crack repairs. Internal curing of concrete by the use of presaturated lightweight aggregates or polyethyleneglycol is well established method of counteracting self desiccation and autogenous shrinkage. Review the various methods of curing concrete contained in section 901. Curing plays an important role on strength development and durability of concrete. The first project that is discussed is bacterial concrete, in which bacteria are mixed in concrete, that can precipitate calcite in a crack and with that make concrete structures water tight and enhance durability. Mohanraj rajendran m studied on selfcuring concrete incorporated with polyethylene glycol. Water retention and durability article pdf available in aej alexandria engineering journal 293 april 2015 with 3,110 reads how we measure reads. Self curing of concrete concrete construction aggregate. Currently, there are two major methods available for internal curing of concrete. In the present paper, selfcuring concrete of m20, m40 and m60 grades are developed using optimized dosage of polyethylene glycol as internal curing agent. Pdf experimental study on the properties of selfcuring.
The simplest way of selfhealing is to ensure that extra dry cement in the concrete exposed on the crack surfaces can react with water and carbon dioxide to heal and form a thin white scar of calcium carbonate. M25 and m40 grade of concrete are adopted for investigation. Curing concrete, chapter 12 the university of memphis. Self consolidating concrete is required to flow and fill special forms under its own weight, it shall be flowable enough to pass through highly reinforced areas, and must be able to avoid aggregate segregation. The improvement in the mechanical properties of selfcuring concrete scuc was superior while using selfcuring agent of chemical type polyethyleneglycol compared to aggregate type saturated leca as shown in table 4. The chemicals should have abilities to reduce evaporation from solution and to improve water retention in ordinary portland cement matrix. The use of self curing admixtures may be very crucial from the point of view that saving of water is a necessity every day every one cubic. Calcium carbonate is a strong compound found naturally in seashells. Introducing the selfcuring concrete in construction industry. Curing is the maintaining of an adequate moisture content and temperature in concrete at early ages so that it can develop properties the mixture was designed to achieve. This paper highlights the effect of curing agent polyethylene glycol peg400 in the performance of concrete.
Self curing concerete in this we use some admixtures like sra shrinkage reducing admixture propylene glycol type i. Super plasticizer named glenium was used to improve the workability of concrete. Sumit thakur civil fiberreinforced concrete frc seminar and ppt with pdf report. Super absorbent polymer sap are feasible as self curing agents in concrete. Potential materials cement of 53 grade fine aggregate.
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