Adjusting the slump of concrete is a part of the concreting process, which the contractors should manage properly and cautiously. The concrete slump variation from one transit mixer to another is generally due to aggregate moisture content, concrete temperature, mixing ...
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Failed Concrete Slump Test? Here is What you Should do
Engineers should make a proper decision when an on-site slump test fails. The decision could be an outright rejection of the complete batch of concrete or the suspension of the work due to the contractor’s failure to follow project requirements. ...
Standard Specifications of Hollow and Solid Concrete Blocks
In recent times, we have seen a drastic transition from brick masonry to concrete block masonry due to its numerous advantages such as fire resistance, good acoustic performance, cost-efficiency, and strength. In this article, we’ll discuss the standard specifications of ...
How does Natural Pozzolan affect Concrete Properties? [PDF]
Natural pozzolans affect several concrete properties in both fresh and hardened state. It improves the workability of concrete and increases its setting time. The reduction of concrete bleeding and segregation is one of the crucial benefits of natural pozzolans. It ...
7 Uses of Natural Pozzolans in Concrete Applications [PDF]
Pozzolans can be blended with lime (or Portland cement) to produce blended cements that can replace pure Portland cement commonly used in building materials such as concrete, masonry block, masonry mortar, bricks, and other construction units. Utilization of natural pozzolans ...
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 ...
Fire Damage Mechanism of RC Structure and Assessment Method
Fire cause concrete surface cracking and crazing, chemical decomposition, and microcracking and spalling. These impacts can significantly change the properties of structural concrete, reducing strength and durability, and altering structural behavior. Assessment and evaluation of damages caused by fire is ...
7 Factors Affecting Abrasion Resistance of Concrete Surface
The main factor that controls abrasion resistance of concrete is the concrete’s compressive strength. The higher the concrete surface strength the better the resistance of concrete against abrasion. Apart from concrete strength, there are several factors such as the use ...