Core Fill Project

Core-fill is a common job we do! Core-fill is used for filling cavities in block work to provide greater strength and stability, in gully traps and other in-ground structures. It is also known as bulk concrete mix or block fill. For Concrete Taxi, core-fill jobs require amounts from 0.1m³ all the way up to 2m³, depending on the size of the job.

Our Core Fill Mix

Generally, this job consists of a 20MPA strength of concrete, however, this may vary depending on the job or how much stress or pressure the concrete can take before it cracks, shears, or breaks. You’re never going to know how much concrete you’re going to need for a core-fill job, right? Well, as we mix on-site, we can mix to your exact needs, removing all disposal fees.

Efficient Loose tip truck delivery

To maximise your time efficiency and productivity, you don’t want to spend hours mixing it by hand, do you? Often enough, you’ll see yourself spending more money on buying bags of bulk concrete and mixing it yourself, as opposed to using Concrete Taxi. Plus, we charge no minimum quantity surcharge fees to make this experience even more cost-effective!

If this is a type of job we can help you with, give us a call and make a booking today. If you’re not quite ready to book, we’ll be able to answer any inquiries you may have! OR visit our instant quote calculator to receive an instant price for your job!

On-Site Mixing

We deliver a dry concrete blend and mix on-site to your exact core fill specifications, ensuring a precise bulk concrete mix for your job.

Easiest Solution

Our truck delivery provides a seamless, convenient way to get a core fill mix delivered and mixed on-site, saving time and effort.

Jobs of any size

We supply block fill in amounts from 0.1m³ to 2m³, with no minimum quantity surcharge, making us the perfect choice for any concrete core fill project.

Get In Touch

Our professional and friendly drivers have been within the construction industry for many years, so if you have any inquiries about your job, feel free to ask away!

Frequently Asked Questions

What is core-filled blockwork?

Core–filled blockwork involves filling cavities in block work with a bulk concrete mix to provide greater strength and stability. It is commonly used in gully traps, retaining walls, and other in-ground structures where additional reinforcement is needed. Block fill improves structural durability, helping to prevent cracks and ensuring a solid foundation. At Concrete Taxi, we specialise in core fill jobs, offering on-site mixing so you get the exact amount required without unnecessary waste or disposal fees.

How much core fill do I need for 100 blocks?

The amount of core fill concrete needed varies based on block size, voids, and reinforcement requirements. Typically, 100 H blocks require between 0.7m³ to 1.0m³ of bulk concrete mix. With Concrete Taxi’s on-site mixing service, you don’t have to worry about calculating the exact amount, as you only pay for what you use. Whether it’s only 0.1m³ or up to 2m³ you need, we provide a cost-effective and convenient delivery solution without the nasty fees.

What is the mix for core filling concrete?

A standard core fill mix consists of 20 MPA strength to create a fine concrete which flows easily into blockwork cavities. At Concrete Taxi, we mix on-site to match your specific project needs, eliminating the hassle of mixing by hand or buying pre-mixed bags. Our core fill is designed for greater strength, ensuring stability for all in-ground structures, retaining walls, and gully traps. With our on-demand mixing and delivery, you get the right consistency and quantity for your job every time.

What MPa is core fill?

Most core fill concrete jobs require 20MPa strength, providing reliable stability for block work and in-ground structures. However, depending on how much stress or pressure the core–filled block wall will endure, higher MPa ratings may be required. At Concrete Taxi, we can adjust the core fill mix based on your project’s needs, ensuring the right balance of durability and flexibility. Because we mix on-site, you don’t have to worry about over or under-ordering. You can just tell us what you need, and we’ll get it done efficiently.

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