https://www.engineeringnews.co.za
Concrete|Industrial|Roads|Surface|Water|Operations
Concrete|Industrial|Roads|Surface|Water|Operations
concrete|industrial|roads|surface|water|operations

Avoid concrete cracking in dry conditions

25th January 2021

By: Creamer Media Reporter

     

Font size: - +

This article has been supplied as a media statement and is not written by Creamer Media. It may be available only for a limited time on this website.

Hot and windy conditions can lead to plastic shrinkage cracking on fresh concrete, but CHRYSO® ProFilm 19 can solve this problem, without the addition of extra water to the concrete mix.

One of the dangers of working in low humidity conditions – even inside heated buildings during cold weather – is the rapid evaporation of surface moisture from the concrete. This can cause map cracking and plastic shrinkage, where cracks can penetrate to the full depth of a concrete slab.

According to the American Concrete Institute (ACI), plastic shrinkage cracking of concrete is likely to occur whenever the evaporation rate is more than 1 kg per square metre per hour. The ACI highlights that this rate of evaporation can be readily caused by many combinations of air temperature, relative humidity, concrete temperature and wind velocity.

As an evaporation reducer, CHRYSO® ProFilm 19 prevents this cracking by protecting fresh concrete from the effects of excessive moisture loss in rapid drying conditions. Furthermore, it can achieve this result without increasing the bleed. By spraying this evaporation-reducing product onto fresh concrete surfaces, the user creates a continuous mono-molecular film over the concrete, which inhibits the rapid loss of bleed water.

This film lasts as long as the concrete remains plastic, even where floating and trowelling operations must be conducted to create the required surface finish. CHRYSO® ProFilm 19 is a water based product which is compliant with guidelines on volatile organic compounds (VOCs).

The effectiveness of the mono-molecular film means that there is no need for water spraying on the surface of the concrete in order to slow the evaporation process. It can be used on a range of horizontal concrete pours where the evaporation rate may exceed the bleeding rate of concrete. These applications include industrial floors, roads, bridge decks, slabs, patios, driveways and sidewalks.

Edited by Creamer Media Reporter

Comments

Showroom

Weir Minerals Africa and Middle East
Weir Minerals Africa and Middle East

Weir Minerals Europe, Middle East and Africa is a global supplier of excellent minerals solutions, including pumps, valves, hydrocyclones,...

VISIT SHOWROOM 
Environmental Assurance (Pty) Ltd.
Environmental Assurance (Pty) Ltd.

ENVASS is a customer and solutions-driven environmental consultancy with established divisions, serviced by highly qualified and experienced...

VISIT SHOWROOM 

Latest Multimedia

sponsored by

Option 1 (equivalent of R125 a month):

Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format

Option 2 (equivalent of R375 a month):

All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.

Already a subscriber?

Forgotten your password?

MAGAZINE & ONLINE

SUBSCRIBE

RESEARCH CHANNEL AFRICA

SUBSCRIBE

CORPORATE PACKAGES

CLICK FOR A QUOTATION







sq:0.074 0.137s - 162pq - 2rq
Subscribe Now