The Constructor
OCTOBER 6, 2022
Distress of concrete refers to the deterioration and decomposition of concrete caused by environmental conditions, autogenous internal influences, and exposure to operation services and testing. The post How to Identify Concrete Distress in Visual Inspection Report? This helps engineers […].
Construction Specifier
JANUARY 12, 2021
Photos courtesy American Institute of Concrete. The American Concrete Institute (ACI) published ACI 301-20, Specifications for Concrete Construction , in October 2020. This standard specification establishes criteria for concrete construction that can be incorporated by reference into contract documents.
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The Constructor
NOVEMBER 15, 2011
Nominal Mixes In the past the specifications for concrete prescribed the proportions of cement, fine and coarse aggregates. However, due to the variability of mix ingredients the nominal concrete for a given workability varies widely in strength.
Job Order Contracting
SEPTEMBER 21, 2022
inspecting 100 percent of labor, materials, and equipment used) as well as the coefficient/adjustment factor used, and the type, number, and cost of non-prepriced line-items. The indexes include general items of construction such as reinforced concrete and specific items of material or equipment such as pipe or turbogenerators.
The Constructor
MARCH 21, 2012
in dry conditions), it should be suitable for use in concrete. Aggregates: Quality of aggregates, its size, shape, texture, strength etc determines the strength of concrete. The presence of salts (chlorides and sulphates), silt and clay also reduces the strength of concrete.
CivilJungle
MAY 12, 2020
What Is a Concrete Surface Retarder? Surface retarders, also know surface “deactivators,” are applied to fresh concrete to chemically delay the set of the surface mortar. Unlike concrete set retarders, they allow the rest of the concrete to cure normally , without affecting the setting rate or strength gain.
Construction Cost Estimating
DECEMBER 20, 2018
While designing the reinforced concrete members, it is necessary to check the steel reinforcement in jobsite prior to arrange concrete. Besides, ensure the concrete foundations, beams, columns, etc. Often, it is observed that steel beam stirrups employed in reinforced concrete design, are not installed properly.
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