FAQ - Buildr

Why is the app not working?

Unfortunately, due to the Coronavirus pandemic, we are temporarily suspending Buildr’s operations.

We will contact our customers as soon as we are back up and running.

During this time of uncertainty we wish you and your business the best of luck.

Thank you for being a loyal customer. If you need concrete to finish any ongoing projects, please contact our parent company Hanson UK. They are still operating and would be delighted to support you, please remember to mention that you are a Buildr customer.

Hanson UK contact details:

Concrete sales: 0330 123 4633
Email: concretesouthcentral@hanson.com

How soon can you deliver?

The same day and within as little as 2 hours.

Do you charge for part loads?

No.

Do you charge for returns?

no, but please consider the environment when choosing the volume you wish to order. If you are unsure, please use our concrete calculator in the app or call us on 0330 123 2065.

How much free time do I get on site?

We do not charge waiting time, so you can take as much time as you need. A quick discharge would be appreciated to ensure we don’t let down other customers.

 

Keep in mind that concrete typically goes off in 2 hours, so you will want to unload it as quickly as possible. You can organise your team on site more efficiently by tracking the location and ETA of your delivery in real time.

How much does the concrete cost?

There is a flat fee, which includes certain additives you may need.

There are no penalties, so don’t worry about fees for extended waiting time, part loads, cancellations or returned concrete.

Is the estimate I have been quoted what I will actually be charged?

Yes, you will be charged the price you have been quoted.

When will I be charged?

You will not be charged until your order has been delivered. We take your payment details when you place your order so that we can make the transaction as seamless as possible.

What payment types do you accept?

We accept Visa, MasterCard and Amex.

Can I change my order?

Yes, you can change your order until it has been loaded onto one of our trucks. This is usually about 30-45 minutes before your scheduled delivery. Please call us directly if you wish to change your order: 0330 123 2065.

Can I cancel my order if I change my mind?

Yes. You can cancel your order at any time until it has been batched, with no fees. You can track the status of your order in the app.

Do you charge for additives?

No. Let us mix the right concrete for your needs, based on what you have told us, at no extra cost.

Do you offer any discounts?

Yes.

First time use: Use this code if it is your first time using the app: CONCRE18.

Refer a friend: Invite a friend or work mate to use the service with your own referral code, which is available in the app. When they pay for an order you both get £25 of credit on your account.

Off-peak delivery: Discounts are available for off-peak delivery times (check the schedule in the app for the latest off-peak times)

How long does it take to place an order?

The quickest and easiest way is through the app. It takes less than 3 minutes to place your order and you can start it and then come back and complete it at any time.

Can I add more water onsite?

Concrete is batched at the plant to specific weights and ratios to ensure it will meet your requirements. This includes keeping the concrete within the water cement ratio (WCR) of your mix.

Once the concrete arrives onsite, the driver will be able to advise you how much water can be added to stay within the WCR. A truck will typically hold around 100l of water but please remember some water is needed to wash out, and you may be advised against adding water, as it will weaken the concrete or prohibit it from performing as required.

The importance of the WCR is to determine the strength of the concrete, the more water it contains the more dilute the cement paste will be. This can decrease the compressive, flexural and tensile strength in addition to the porosity, plastic shrinkage, colour and risk of cracking.

Do you offer pumps as well?

Yes, we do. Please select a pump when you place your order in the app. Pumps are charged separately at £300 per load/delivery.

What is the minimum level of site access for one of your trucks?

Our trucks are:
Length: 9.5m (31 feet)
Height: 3.9m (13 feet)
Width (with mirrors): 3m (10 feet). If you have an access gate to your site, it must be at least this wide.
Turning circle: 17.5m (56 feet)

A fully loaded truck will weigh up to 32 tonnes. Please ensure that the delivery surface can carry this weight.

My site doesn’t have appropriate access for delivery

We may still be able to deliver your concrete using a pump. Please call us on 0330 123 2065 to discuss your needs.

How long will my product last?

We have experience of providing high quality, reliable products in compliance with the Quality Scheme for Ready Mix Concrete (QSRMC).

How long do I have before the concrete will go off?

As a guide, you have up to 2 hours to lay the concrete after it has been mixed. This can be affected by a number of factors such as the weather. For example, if it’s hot, it may go off faster. This can be overcome by using a retarder, which can prolong this by between 4 and 8 hours.

Does the concrete meet NHBC and local authority standards?

Our concrete has been designed to meet all relevant Building Regulation requirements and complies with all relevant British Standards

What are micro and macro fibres?

These are plastic fibres that can be added to enhance the performance and durability of the concrete.

They can be used for:
• Concrete slabs/external paving
• Deep sections >500mm
• Strip footings and foundations
• Concrete elements with a high length to width ratio (e.g. pathways/kickers)

The benefits, subject to good concreting practice (placement, finishing and curing) are:
• Reduced shrinkage (less crack potential)
• Increased resistance to freeze thaw damage when used with a conventional air entraining agent
• Reduced potential for settlement cracking
• Reduced risk of delaminating
• Increased surface durability

Do fibres replace steel?

Plastic structural fibres are manufactured from a high-strength, high modulus synthetic plastic and are designed to replace welded mesh and light reinforcement bars.

Where plastic fibres are used as either a partial or total replacement to conventional steel reinforcement, we recommend that a structural designer is consulted.

What is slump?

Slump is a measurement of how workable the concrete is and is measured in mm.

Consistence comes in two main categories, called classes, slump or flow. We offer a default slump class S3, which is workable for all types of normal concrete placement, including by pump.

For concrete placed on a slope, dependant on the gradient, a lower S2 class is recommended. Fence posts and kerb backing require even lower S1 values.

S4 offers high workability and is almost self-compacting, ideal for applications like filling trenches.

If you are unsure about the level of consistence you need, please call us: 0330 123 2065.

How can I prevent concrete from cracking?

The primary causes of concrete cracking are lack of curing or ineffective curing.

How should concrete be cured?

Fresh concrete must be protected in its early life from hot sun, dry air, drying winds and frost. If concrete is not protected, it will be less durable and more prone to cracking.

Effective curing prevents the evaporation of water from a concrete surface. To do this you must either hydrate the concrete with curing agents, and/or insulate it with polythene sheets, frost blankets or straw.

The benefits of proper curing include:
• Increased wear resistance
• Reduction of surface erosion
• Increased frost resistance
• Improved life span
• Optimum strength development
• Reduction in cracking
• Increased resistance to thermal contraction

Curing periods required by most specifications range from approximately three to seven days, irrespective of weather conditions. The first 24 hours are the most critical.

Four days is recommended for concrete curing time for all of our products. In adverse conditions, i.e. hot or windy weather, full curing should continue for a minimum of seven days.

Slightly longer periods of curing may be necessary when a cement replacement has been incorporated in the concrete mix.

How can I tell when the concrete is ready to traffic or build on?

You should wait at least seven days but be mindful that concrete will not achieve its full strength for 28 days.

What is the risk from concrete burns from contact with wet concrete and mortar?

Wet concrete can cause severe chemical burns to skin and eyes. This is because water mixed with cement becomes a strong alkali (caustic) liquid. In addition to being caustic this liquid also acts as a local anaesthetic which means burns can occur without feeling any pain at the time.

Severe concrete burns are likely to require skin graft reconstruction. If there is a risk of contact with wet concrete (or any other mixture of cement and water) then waterproof clothing should be used to protect the parts of the body that are at risk – waterproof gloves if there is a risk of hand contact; waterproof boots if there is a risk of foot contact; waterproof trousers if there is a risk of leg contact, etc.

When working with wet concrete you should always be alert to the risk of accidental contact. As soon as you are aware of skin or eye contact, stop what you are doing and thoroughly wash the affected area. In the case of contact with the eye, medical advice should then be sought immediately to ensure that all traces of the concrete have been removed.

The risk of chemical burns is only present when concrete is wet. Once it has set the alkaline liquid is no longer present and it is safe to touch.

What health and safety risks are posed with the equipment used to supply ready-mixed concrete on site?

If used incorrectly, all equipment can present a risk. People may be under increased pressure to finish quickly before the ready-mixed concrete sets so it is worth ensuring everyone understands the operating instructions before the job starts.

If the mixer truck is fitted with a conveyor, or a pump is used, you should provide an adequate ‘exclusion zone’ to prevent accidental injury.

Concrete pumps operate under high pressure so extra care should be taken at the joints in the line. Also, the area by the fill hopper should be avoided as this presents a risk of ‘blow back’.

Contact us

If you have any further questions or would like more information on any of the above queries, please contact us on 0330 123 2065.

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