National Ready-Mix Concrete Association (NRMCA) is the governing body that works to keep customers informed on concrete topics and ensure our work meets and exceeds high quality standards. Island Ready-Mix Concrete is dedicated to it's customers and committed to providing the best service possible. Below are answers to some of the most common questions that arise when working with concrete. These guidelines are provided by NRMCA. Complete information on these topics can be found on the NRMCA website.
How to Minimize Plastic Shrinkage Cracking
What is Curing?
High temperatures, high wind velocity, and low relative humidity can affect fresh concrete in two important ways:
The key to successful hot weather concreting is:
Finishing make concrete attractive and serviceable. The final texture, hardness, and joint pattern depends on the concrete's end use. Finishing should be carefully planned. Skill, knowledge and experience are required to deal with a variety of concrete mixtures and field conditions.
When concrete arrives at the jobsite with a slump that is lower than that allowed by design or specification and/or is of such consistency so as to adversely affect the placability of the concrete, water can be added to the concrete to bring the slump up to an acceptable or specified level.
The key to placing an order for ready mixed concrete is to provide all the basic detailed information and to keep the requirements as simple as possible and relevant to the application. Some of the basic requirements to keep in mind when placing a concrete order are:
Pre-construction conferences (pre-pour meetings) are needed to sort out the details of how a job will be executed, identify the authorized contacts for various aspects, and what should be done if some things do not go as planned. Two jobs are never the same. Pre-construction conferences should provide a clear understanding of responsibilities to maintain efficiency and prevent errors during construction.