Is premixed concrete good?

procrewschedule.com - Ready Mix Concrete vs. Site-Mixed Concrete: Comparison, Pros and ...

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Several factors will be considered to outline the comparison between these 2 types of concrete. The factors include time, equipment, distribution, recommended application, waste, storage equipment, workforce, quality, material takeoff and other vital considerations. Using a crew schedule software is also a critical factor to consider. With this software, monitoring a streamline of processes is faster and easier. Concrete contractors no need to track everything manually. Ready-mix concrete is commonly manufactured from a factory and will be delivered to the construction site while in a plastic or unhardened state, ready for use. This type of concrete is typically expressed in cubic meters and is sold by volume. Concrete guarantees higher sustainability and durability. The mixture formed is higher in quality and more precise as expert suppliers carry out the work.

Time: Less-time consuming and delivered ready to use

Distribution: can be delivered to numerous sites within a project; distribution tracking is easily done using a construction scheduling software

Equipment: Equipment isn’t required at the construction site

Storage Requirements: additional storage space isn’t necessary for raw materials

Recommended Application: High-rise structures

Waste: The material waste at the job site is minimal

Quality: the quality is consistent due to programmed and controlled environment

Material takeoff: it can be measured as a single item

Workforce: only skilled laborers are only required to compact and pour concrete

Space: suitable access is required for concrete mixer trucks

Batch Size: huge amounts of concrete can be delivered anytime and the delivery process can be efficiently monitored using a builder software Site Location: if the plant is located too far from the concrete site, retardants and admixtures are required for concrete to prevent the setting

Pros:

· Concrete is typically batched within factor conditions to maintain the consistency of the quality material · Concrete will be supplied in transit mixer so lesser space is required onsite

· Material wastage onsite is negligible as batched as the products

· Proper mixing and better handling practice will help to reduce the consumption of cement by 12%

· The concrete mixed is utilized with high versatility

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· Cement is saved and the dust is reduced as the ready-mix concrete making use of bulk concrete

· More durable structure is achieved; thus, service life tend to increase

Cons:

· Traffic during the transit could result in setting up the concrete. There might be additional admixtures needed once there’s a delay. The greater problem comes when there is unexpected traffic. · The transit time from the start of concrete preparation until the delivery site will eventually result in a loss of workability. At the site, QA/QC engineers check the workability through slump tests before having it for construction. · The placing arrangement and formwork should be prepared in advance in the area as the ready-mix concrete can be handled in larger amounts · There might be quality concerns because of the continuous need of admixtures

· Transportation costs tend to increase most of the time

2. Site-Mix Concrete

As the name implies, it is a volumetric concrete that is usually prepared at the site. There will be concrete components involved and this will be mixed in specific ratios to achieve the desired strength. This particular method requires utilizing formulas to identify the number of steps and amount of materials to acquire desired consistency. Concrete workers have to be meticulous and careful with the standard proportions of the materials to avoid quality conflicts in the concrete. To be more precise with the standard proportions, using a task scheduler software is very useful. The tool allows concrete experts to manage further and supervise all implemented methods and strategies while the work is going on. Time: the process seems slower because of various steps and setting time and formulas are involved Distribution: concrete is mixed at the scheduled point of use to prevent contamination

Equipment: to make concrete on-site, a weigh batch mixer is necessary.

Storage Requirements: controlled storage space is required to protect and manage materials like aggregates and cement

Recommended Application: Low-rise structures

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Waste: during mixing and storing, material loss usually happens

Quality: continual supervision is meant for consistency among batches

Material takeoff: the materials are estimated separately, and the purchase is planned individually

Workforce: it requires several hours to prepare concrete on the jobsite

Space: large space is required for batch mixers and material storage

Batch Size: mixing vast amounts of concrete on construction site is difficult

Site Location: requires transportation for mixing equipment and materials to the construction site

Pros:

· With well-organized supervision, except for high-quality and economical concrete

· A small quantity of batch can be required and produced without varying from an external agency in terms of scheduled concrete works · The design can be rather optimized per strength result and projects managers can do value engineering to save money

· There is no restriction with order quantity

· The need to rely on external agencies for finishing concrete works is not necessary

· Site-Mix concrete is more affordable than ready-mix for about 20%

Cons:

· More space is required for stocking materials

· Site logistics are needed to be taken care of

· Wastage of used materials as well as periodic reconciliation are to be monitored regularly

· Qualified staff on-site should supervise concrete production

Key Takeaways

To conclude, ready-mix concrete is usually better for most construction projects despite the increasing costs. It offers a much higher quality, including a variation between batches during concrete preparation in the plant environment. One key factor is the current location of the project because transportation requirements initially determine what type of concrete is preferable for the project. Additionally, ready-mix concrete is typically recommended for large-scale projects where high volume is required. Moreover, site mixing is a better option for small-time construction projects like renovation where concrete volume is smaller.

procrewschedule.com - Ready Mix Concrete vs. Site-Mixed Concrete: Comparison, Pros and ...

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