Concrete technology diagnosis and control of alkaliaggregate. The advantages of reactive powder concrete rpc include higher durability, ductility and strength in comparison with normal concrete and fibre reinforced. Reactive powder concrete ppt video online download slideplayer. Ultrahigh performance concrete uhpc, is also known as reactive powder concrete rpc. What is concrete and what are the advantages of concrete. Reactive powder concrete introduction reactive powder concrete rpc is the generic name for a class of cementious composite materials developed by the technical division of bouygues, in the early 1990s.
The importance of selfcompacting concrete is that maintains all concretes durability and characteristics. What are the advantages, disadvantages and applications of. Rpc will be capable to settle a lot of shortcomings problems of last century mixture. Silica fume advantages and disadvantages in concrete silica advantages of silica fume in concrete. There are concretes that leads the way to the achievement of the maximum compressive strength of the order 120150 mpa. Wu department of construction engineering, national taiwan university of science and technology. Roman concrete the roman concrete had great advantages it was strong and easier to use than stone for making smooth shapes such as domes it could set under water, so it could be used for piers and pediments of bridges and aqueducts it also had some disadvantages. Reactive powder concrete rpc ppt topics for seminar. Composition of reactive powder concretes sciencedirect.
Reactive powder concrete rpc and general equation for expressing such. Rather a wide range of compositions is encountered, depending on the application and the purity of aluminium source used. One of the most beneficial uses for silica fume is in concrete. It has immense potential in construction due to its superior mechanical and durability properties compared to conventional high performance concrete, and could even replace steel in some applications.
Selfcompacting concrete applications and advantages. The main function of polyacrylate is to decrease the water cement ratio and also to improve the workability of concrete. Reactive powder concrete introduction reactive powder concrete. Reinforced concrete, as an economic building material, is very popular nowadays. It is tested completely in terms of strength, uniaxial compressive stressstrain relation, flexural loaddeflection relation, and frost resisting durability, and the results indicate that the concrete is suitable to rpc200. Reactive powder concrete rpc is an ultra highstrength and high ductility cementitious composite with advanced mechanical and physical properties.
Learn the material composition, design mix, mechanical and physical properties, disadvantages, permeability, advantages over high performance concrete applications. Typical composition of ingredients in reactive powder concrete of 200 mpa and 800 mpa are tabulated below. Induced microcracking does not impede compressive strength enhancement. The material is typically formulated by combining portland cement, supplementary cementitious materials, reactive powders, limestone and or quartz flour, fine sand, highrange water reducers, and water. Feb 23, 2018 it usually contains other calcium aluminates as well as a number of less reactive phases deriving from impurities in the raw materials. Research article properties of reactive powder concrete and. Jul 19, 2016 advantages of reinforced concrete reinforced concrete has a high compressive strength compared to other building materials. What are the advantages and disadvantages of each of the. A highperformance reactive powder concrete rpc was prepared with river. Performance concrete uhpc, or reactive powder concrete rpc. Economic and social effects are also looked at and discussed.
There are several advantages of high performance concrete hpc application in building construction which are not achievable using conventional concrete. Reactive powder concrete rpc, a cementbased composite material well known for the ultra high strength, highdurability and lowporosity, made its international debut in 1994 richard, 1994 1. Properties of reactive powder concrete and its application. Proposed model for uniaxial compression behavior of reactive. The concrete plays a very important role in all branches of civil engineering. The strength, durability, resistance to chemical attack, and workability of high performance concrete are high.
If oxalic acid is included in the powder, it can cause etching or blistering of marble and limestone depending on the skill of the person using it. Concrete technology and special concrete presentation on reactive powder concrete. Advantages and disadvantages of reinforced concrete. Due to the frame, the reinforced concrete can also withstand a good amount of tensile stresses. Advantages of concrete, disadvantages of concrete, advantages and disadvantages of concrete,inert material acts as a filler and the binding materials. Analysis and design of rpc girders voo, yen lei on.
Reactive powder concrete rpc was developed in france in the early 1990s and the worlds first reactive powder concrete structure, the sherbrooke bridge in canada, was erected in july 1997. The main drawback of this concrete, which eventually did not have any practical applications, was diminishing the mechanical properties after contact with water. In this paper, the making of concrete and its advantages and disadvantages will be discussed, alongside some different alternatives that have been implemented at present time to deal with energy efficiency and environmental security. Pdf a new approach for production of reactive powder concrete. Alkalisilica reactivity has been recognized as a potential source of distress in concrete since the late 1930s stanton 1940 and pca 1940. Development of an ultrahigh strength ductile concrete designated rpc reactive powder concrete, was made possible by the application of a certain number of basic principles relating to the composition, mixing and postset heat curing of the concrete. In this study, the production of lightweight reactive powder concrete lrpc was aimed by using pumice aggregate so as to gain advantage on. Concrete is building material mostly used now a days for construction activities, it is used to get desired strength from structure made of it. Performance of reactive powder concrete rpc with different curing conditions and its retrofitting effects on concrete member t. Advantages and disadvantages of silica fume in concrete silica fume is a byproduct of producing silicon metal or ferrosilicon alloys.
A messy process, requiring additional work to clean up. Reactive powder concrete composition and advantages. Advantages and disadvantages of concrete civil engineering. It composed of very fine powders cement, sand, quartz powder, steel aggregates and silica fume, steel. Advantages of sfrc steel fiber reinforced concrete 6. Reactive powder concrete rpc is an emerging technology that lends a new dimension to the term high performance concrete. A composite material of ultra high quality with mechanical properties. Abstract this research describes the importance of the effect of silica fume on concrete properties and the advantages of its use in the kurdistan region, silica fume can either be addition added separately at the concrete mixer or incorporated into a factoryproduced composite cement. Ingredients of concrete are easily available in most of the places.
Thus, this paper is an attempt to define bacterial concrete, types and classification of micro organisms, working of bio concrete as a repair material, advantages and disadvantages of bacterial. Fine ingredients makes the concrete void proof and no leakage of gas or liquid occurs. Following are the advantages of reactive powder concrete compared to other types of concretes. Properties of reactive powder concrete and its application in. A study on properties of reactive powder concrete ijert. Download the reactive powder concrete ppt for civil and construction engineering. Concrete can be manufactured to the desired strength with an economy. Advantages and disadvantages of reinforced concrete civil. A highperformance reactive powder concrete rpc was prepared with river sand, and the maximum particle size is 1. It does not contain fly ash, slag, silica fume, and natural pozzolans, chapter 3. Concrete technology and special concrete presentation on reactive powder concrete 2. Due to its high ductility property it always compete with steel. As it is easy to design and produce concrete of desire strength by using its ingredients like aggregate. One of the potential drawbacks of rpc production in new zealand is the absence.
It is widely used in many types building around the world. Pdf engineering properties of reactive powder concrete without. Because of its chemical and physical properties, it is a very reactive pozzolan. Due to the provided reinforcement, reinforced concrete can also. Advantages of reinforced concrete the concrete has a high compressive strength compared to other building materials. Reactive powder concrete rpc is a developing composite material that will allow the concrete industry to optimise material use, generate economic benefits, and build structures that are strong. Reinforced concrete has a high compressive strength compared to other building materials. Composition it is made out of comparative modulus of flexibility. Aug 30, 2017 in no particular order here is a list of some more advantages and disadvantages of reinforce. Unlike natural stones, concrete is free from defects and flaws. Along with many advantages, reinforced concrete also poses some disadvantages also.
Effect of silica fume on concrete properties and advantages. Jan 16, 2017 reactive power q var is needed for a proper functioning ac power system to keep the voltage up and is related to the active power p kw and apparent power s kva through the power triangle. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Nowadays, the most widely used uhpc is the socalled reactive powder concrete rpc and its derivatives. Advantages and disadvantages of silica fume in concrete.
What is reactive powder concrete rpc rpc is an ultra high strength and high ductility cementitious composite with advanced mechanical and chemical properties. Jun 17, 2019 selfconsolidating concrete is a highly flowable type of concrete that spreads into the form without the need for mechanical vibration. Concrete designed from reactive powder concrete and highperformance concrete is experimentally. Comparative study between the cost of normal concrete and. Mixture of fiber strengthened, super plasticized, silica rage, bond and quartz sand with low water concrete proportion. Rcc concrete is considered as a chemically combined mass where the inert material acts as a filler and the binding materials act as a binder. Selfcompacting concrete is a nonsegregating concrete that is placed by means of its own weight.