High-performance concrete can be produced through the use of low w/c ratio, pozzolanic materials, packing aggregates densely, and improve transition zone strength. Superplasticizers reduce water content by dispersing cement particles and maintain the required workability. Concerning pozzolanic materials, it improves ...
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Ultra-high-Performance Concrete: Characteristics, and Applications
Ultra-high-performance concrete (UHPC) is defined as ‘concrete that has a minimum specified compressive strength of 150 MPa with specified durability tensile ductility and toughness requirements; fibers are generally included to achieve specified requirements”, as per ACI 239R-18. Commonly, the UHPC ...
Concrete Durability Requirements Based on ACI-318-19
The ACI 318-19 set durability demand for concrete based on the category exposure and class exposure of the structure, dependent on the ground and weather situation of the area. Each exposure category contains different class exposure. The class exposure describes ...
Design Requirements of Concrete Based on ACI 318-19
There are several requirements established in ACI 318-19 (Building Code Requirements for Concrete and Commentary) that concrete materials need to meet; otherwise, it would not be suitable for the construction of a structure. These requirements vary from one structure to ...
What are the Differences Between High-Strength and High-Performance Concrete?
High-strength concrete and high-performance concrete are not synonymous because strength and performance of concrete are different properties of concrete. High-strength concrete is defined based on its compressive strength at a given age whereas high-performance concrete is defined based on performance ...
Applications of High-Performance Concrete in Civil Engineering
There are several applications of high-performance concrete in the field of civil engineering due to its superior properties such as high strength and good durability. The high-performance concrete has been used in the construction of bridges, hydropower structures, pavements, bridges, ...
Steps for Concrete Damage Repair in Reinforced Concrete Structures
There are certain steps that need to be considered in order to decide whether defected concrete needs repair or not, and specify proper repair technique and material if repairing is needed. These repair steps would ensure successful repairing process that ...
11 Factors Affecting the Selection of Repair Materials
There are a number of factors such as strength, durability, thermal coefficient of thermal expansion, permeability, low dry shrinkage, chemical and electrical properties, curing, and cost that must be considered to select the most appropriate, compatible, cost-effective repair materials. This ...