The concrete should be used as efficient as possible. Nowadays researches efforts are continuously looking for new, better and efficient construction method. Various theories related to the analysis of structural elements reduced the self-weight of element for a given load- carrying capacity. Structural material optimization can reduce the dead load which reduce the contribution of seismic effect in high rise structures and also very good at the vibration dampers and heat isolation. According to the natural behaviour of the concrete, it is strong in compression and weak in tension.
The tensile strength of the material increases because the subsequent application of tensile stress must nullify the compressive prestress. • This can result in improved structural capacity and serviceability compared to conventionally reinforced concrete. • High-strength tendons are used to produce compression. They are made of high- tensile steels, carbon fibers etc. and consist of threaded bars, single or multiple
Drilling a gap in concrete is a helpful and convenient strategy. You can set up racks, hang artistic creations, introduce lights, and do significantly more rapidly and securely. The procedure itself is straightforward, however choosing the correct devices and seeing how to utilize them will spare you a colossal measure of time. Setting Up Hammer drill Drilling concrete is substantially less demanding with a hammer drill, or a revolving hammer for huge occupations. These instruments crack the solid through fast hammering and afterward drill to scoop out the broken material.
Concrete: cellular concrete of clay- gypsum and invention of light weight concrete Ferro concrete: this concrete is made up of a layer of fine mesh wire saturated with cement. Gunite: or commonly referred as a shot crete. This type or form of concrete is most commonly used in areas where formwork is limited or hard to use. Shoring up exposed vertical excavations, banks or surfaces susceptible to collapse. For example, vertical soil or rock surfaces.
The plastic settlement cracks occur due to the settlement of heavy aggregates at bottom and water at top surface or due to concrete’s tendency to reduce its volume and a restraint in the reduction by either reinforcement or duct will cause adjacent concrete to settle and form crack over the restraining area. In exposed situations, this may increase the risk of corrosion of the reinforcement and pose a threat to durability of the structure. Cracks may develop further due to subsequent drying shrinkage, leading to possible cracking through the full depth of the concrete
Concrete, or more specifically ready-mix concrete, is a common material for driveways and walkways. While it works well and is usually quicker to pour, it is prone to some issues. Discoloration, flaking, and crumbling are all pitfalls of ready-mix concrete. Fortunately, these pitfalls can easily be avoided. If you have recently had your driveway or walkway poured with ready-mix concrete, use these four tips to help it keep it looking beautiful and healthy for years to come: 1.
Carbon fiber reinforcement: In certain cases, carbon fiber reinforcement might be a viable alternative to a standard steel wall brace. A newer development in foundation and crack repair, carbon fiber products are lightweight and sleek while still being able to bear large weight loads. A foundation repair pro will use an epoxy adhesive to bond the carbon fiber panels to damaged areas. What foundation repair strategy is right for your specific needs? That can only be determined after a thorough examination of the problem by an experienced and knowledgeable professional.
It allows fast replacing of cast in situ concrete to shape beams, walls, slabs and columns. It is preferred for the wall construction instead of columns and beams due to a lot of repetitive of the same wall components in building wall frame. Its components are widely available in standard sizes and stiffened using built in stiffeners or tie roads to tolerate the concrete pressure when concreting is being done. This system provides a rapid speed of installation, less cost and simplicity in instruments. It also gives excellent accuracy and good interior finishing which ends the need of
It is used for two main intention; as a new construction wearing course and as a precautionary maintenance for an existing pavement. BST, or chip seal, comprising of a flake of asphalt binder that is superimposed by a flake of aggregate embedded in the binder that furnishes, into other things, conservancy to the existing stratum flake from tire blight and a skid resistance surface texture for vehicles. Sprayed seals is a low cost alternative compared to other pavement surfaces but the roadway has to be resurfaced more frequently because a severely distressed underlying stratum will minimize the attribute of the chip seal and shorten its service life. Chip seals, also called "stone-and-oil" or "sprayed seals" are bituminous stratum remedy containing of single-size aggregate dilation on a road just after sprinkle with asphalt emulsion. They are normally used to clog subgrade decay by sealing small rift in the stratum, thus stopping infraction of water, and also to reforming roadway skid counteraction and riding quality.
Properties of Roller Compacted Concrete with Pozzolan as Cement Replacement Material Introduction: Roller compacted concrete (RCC) gets its name from the heavy vibratory steel drum and rubber-tired rollers used to compact it into its final form. RCC has similar strength properties and consists of the same basic ingredients as conventional concrete_ well graded aggregates, cementitious materials, and water_ but different mixture proportions. The largest difference between RCC mixtures and conventional concrete mixtures is that RCC has a higher percentage of fine aggregates, which allows for tight packing and consolidation . RCC may be considered for applications where no-slump concrete can be transported, placed, and compacted