Housewrap is a synthetic material used to wrap the exterior of a building to protect the wall frames from external moisture penetration. A housewrap is technically referred to as a water-resistant barrier (WRB), a lightweight sheet installed behind the siding ...
Category: Building Technology Guide
Building technology and construction guide provides information on building and construction materials for different types of construction works.
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What are the Causes of Early-age Cracking in Concrete?
Early-age cracking is observed during the first seven days after concrete pouring. However, such cracks may also take more than a week to be visible in reinforced concrete slabs. Therefore, cracks appearing within 60 days after the concrete placement are ...
5 Ways to Mitigate Early-Age Cracking in Concrete Structures
Mitigating early-age cracks in concrete structures is critical for sufficient durability, avoiding possible strength reduction, and reducing maintenance costs. Not only do early-age cracks diminish the aesthetic appearance of a building, but also make occupants uncomfortable and affect the contractor’s ...
Applications of Controlled Low-Strength Materials (CLSM)
Controlled low-strength material (CLSM) is a self-consolidating cementing material used primarily as an alternative to compacted fill (ACI 229R). It is intended to result in a compressive strength of 1200 psi or less. CLSM mixture usually consists of water, portland ...
How to Minimize Rate of Evaporation from Concrete Surface?
A high rate of evaporation from the concrete surface leads to quality, durability, and potential strength-related issues. Plastic shrinkage cracks are highly likely to occur if the evaporation rate is higher than 1 Kg/m2/hour. Therefore, appropriate actions to slow down ...
Metal Ceilings: Types and Features
Metal ceilings are architectural ceiling elements made from finished metal plates with designs pressed into them. Metal ceilings can be made from aluminum, steel, or galvanized iron. Metal ceilings add strength to the structure and are highly durable compared to ...
How to Estimate Rate of Evaporation on Concrete Surface?
Evaporation is a critical factor that must be considered while concrete is poured in hot weather conditions. If the rate of evaporation is high, concrete surface can lose water quickly, leading to workability issues and plastic shrinkage cracks. Plastic shrinkage ...
What are the Risks of Pouring Concrete at a Wrong Temperature?
Placing concrete at the correct temperature is critical for its durability and ultimate strength. This is because temperatures above the normal concrete curing range (32 °C) will not only reduce the workability of concrete but also cause a significant reduction ...