AI assistant
ZEOTECH LIMITED — Capital/Financing Update 2025
Apr 22, 2025
66115_rns_2025-04-22_c214c353-a21e-4829-a4c8-8c6534436ca5.pdf
Capital/Financing Update
Open in viewerOpens in your device viewer
==> picture [149 x 43] intentionally omitted <==
23 April 2025
MAIDEN AUSPOZZ™ COMMERCIAL-SCALE CONCRETE DEMONSTRATION TRIAL
Emerging mineral processing technology company Zeotech Limited (ASX: ZEO, “Zeotech” or “the Company”) is pleased to announce that it has completed the first commercial-scale concrete demonstration trial using the Company’s low embodied carbon AusPozz™ highreactivity metakaolin (“HRM”) product.
HIGHLIGHTS
-
First successful commercial-scale concrete trial for Zeotech’s AusPozz™
-
Several influential concrete and civil engineers from commercial construction companies and a Queensland State Government department attended the demonstration
-
Initial commercial-scale results replicate laboratory development scale work
-
Potential reduction in total GP cement by substituting it with 40% AusPozz™ can significantly reduce the total embodied carbon associated with concrete
-
Concrete workability and handling were shown to be excellent, at the high cement replacement level of 40%
Zeotech, Chief Executive Officer, James Marsh commented:
“This was another successful milestone event in commercialising our AusPozz™ product.
AusPozz[TM] continues to impress concrete industry veterans with its ability to offer major decarbonisation opportunities while eliminating longstanding industry problems.
With Zeotech’s simple, low-cost production flowsheet, AusPozz[TM] is a complete low-carbon concrete solution for the construction industry.”
Zeotech ran a successful commercial-scale concrete demonstration of its AusPozz™ at Holcim Australia’s largest Brisbane batching plant. This was the first commercial-scale demonstration of its type, and was attended by several influential concrete and civil engineers from organisations, including:
-
Laing O’Rourke;
-
BMD Group;
-
Empower Construction;
-
Icubed Consulting; and
-
Queensland Government - Department of Transport and Main Roads.
www.zeotech.com.au
Zeotech Limited | ASX: ZEO ACN 137 984 297 Level 27, Santos Place, 32 Turbot Street, Brisbane QLD 4000 P: +61 7 3181 5523 | E: [email protected]
==> picture [149 x 43] intentionally omitted <==
Recent independent concrete testing work conducted by Zeotech[1] showed that AusPozz™ could replace up to 40% of cement in concrete used for large-volume applications such as wind farm turbines, alongside providing several desirable technical advantages. This gives AusPozz™ the potential to provide a ‘total concrete solution’ that targets the strategic pillars of decarbonisation, performance improvements, and cost savings.
A typical wind farm type concrete mix design (Table 1) with a 28-day strength target of 40MPa was selected for the demonstration to showcase AusPozz™ to key decision-makers active in the Australian concrete industry. A full concrete truckload of approximately three cubic metres was batched at the Holcim Australia plant using a low-carbon mix design of 40% AusPozz™ and 60% GP Cement, which replicated a mix design that achieved 28-day strength of 62MPa in earlier laboratory-scale trials[1] .
Reducing the total GP cement by substituting it with 40% AusPozz™ could significantly reduce the total embodied carbon associated with concrete.
Table 1 – Wind Farm & Large Volume Mix Design Concrete
| Description | 40% AusPozz™ **Design ** |
|---|---|
| Trial Type | Truck |
| Mix Number | 1 |
| Cement Type | GP |
| **Cement (kg) ** | 204 |
| AusPozz (kg) | 136 |
| Total Cementitious (kg) | 340 |
| SEQ 20mm Aggregate | 675 |
| SEQ 10mm Aggregate | 375 |
| EQ Coarse Sand | 400 |
| SEQ Fine Sand | 400 |
| W/C Ratio | 0.55 |
| Bleed (ml) AS 1012.6 | 0 |
| Bleed Under Pressure (ml) | 14 |
| Air Content (%) | 2.20 |
| Ambient Temp (°C) | 24 |
| Concrete Temp (°C) | 29 |
| Setting Time (hrs) | 3.5 |
| Unconfined Compression Strength (UCS) | |
| 24hr (MPa) | 9.0 |
| 3 day (MPa) | 22.5 |
| 7 day (MPa) | 40.0 |
1 ASX Announcement 15/04/25 - Outstanding AusPozz Performance Independent Concrete Trials (Table 3)
www.zeotech.com.au
Zeotech Limited | ASX: ZEO ACN 137 984 297 Level 27, Santos Place, 32 Turbot Street, Brisbane QLD 4000 P: +61 7 3181 5523 | E: [email protected]
==> picture [149 x 43] intentionally omitted <==
The concrete batch was mixed and then poured into a concrete hotbox tester. This specialised test chamber is used to determine the heat transfer properties of concrete under simulated real-world conditions. This type of test is particularly useful for assessing the thermal performance of large-volume concrete applications where the temperature differential between the core and the outer regions can present a significant issue if it becomes too high.
==> picture [214 x 142] intentionally omitted <==
==> picture [214 x 142] intentionally omitted <==
(above) concrete hotbox demonstration pour and temperature monitoring
The hotbox tester creates a controlled environment on both sides of the test specimen. This allows for precise control of temperature, humidity, air speed, and radiation properties, which simulates the conditions inside large concrete pours.
Zeotech engaged an independent concrete testing consulting company to collect other concrete samples from the commercial-scale batch to be evaluated under a range of standard concrete tests.
==> picture [214 x 142] intentionally omitted <==
==> picture [214 x 143] intentionally omitted <==
(above) concrete samples collected for independent testing
Concrete testing completed on site consisted of workability, slump, and bleed under hydrostatic pressure and the results are shown in Table 1.
www.zeotech.com.au
Zeotech Limited | ASX: ZEO ACN 137 984 297 Level 27, Santos Place, 32 Turbot Street, Brisbane QLD 4000 P: +61 7 3181 5523 | E: [email protected]
==> picture [149 x 43] intentionally omitted <==
==> picture [214 x 143] intentionally omitted <==
==> picture [214 x 143] intentionally omitted <==
(above) slump and hydrostatic pressure testing
==> picture [214 x 142] intentionally omitted <==
==> picture [214 x 142] intentionally omitted <==
(above) concrete workability testing
Once the demonstration was completed and all testing, including sample collection, was finished, a presentation on Zeotech and earlier AusPozz™ laboratory scale testing was given, followed by a question-and-answer session. This allowed attendees to fully understand the optimum application of AusPozz™ across a wide range of concrete mix designs by accessing over six months of experience from Zeotech’s independent concrete consultant.
==> picture [214 x 142] intentionally omitted <==
==> picture [214 x 142] intentionally omitted <==
(above) presentation and question & answer session
www.zeotech.com.au
Zeotech Limited | ASX: ZEO ACN 137 984 297 Level 27, Santos Place, 32 Turbot Street, Brisbane QLD 4000 P: +61 7 3181 5523 | E: [email protected]
==> picture [149 x 43] intentionally omitted <==
Initial hotbox testing showed exceptionally low heat development in the concrete, which was the main aim of the demonstration. Monitoring will continue over several days to track the temperature differential.
Other samples taken away for external expert testing include tests for strength and shrinkage, and the results of which will be available once they are complete.
Further Testing
Earlier laboratory-scale trials demonstrated that 40% AusPozz™ replacement of GP cement can result in a concrete strength of 62MPa[1] , which exceeds the design strength of 40MPa. Therefore, there is an opportunity to achieve even more significant improvements, and additional test work will evaluate GP cement replacement of 50% and 60% using AusPozz™.
This approach aims to further reduce the heat development of the concrete and lower its carbon footprint. It would not normally be possible to get high concrete strengths with a low level of GP cement, but the high performance of AusPozz™ is giving rise to a wide range of technical advantages.
This announcement has been approved by the Zeotech Board.
- End -
For further information, please contact:
James Marsh - Chief Executive Officer [email protected] Tel: (+61) 7 3181 5523
Neville Bassett - Company Secretary [email protected] Tel: (+61) 7 3181 5523
About Zeotech
Zeotech Limited (ASX: ZEO) is a team of dedicated people working together to build a future-focused company, leveraging wholly-owned high-grade kaolin resources to produce high-reactivity metakaolin (HRM) for the low-carbon concrete market and advanced materials for greenhouse gas (GHG) mitigation, such as zeolites for fugitive methane control.
Zeotech Limited - Social Media Policy
Zeotech Limited is committed to communicating with the investment community through all available channels.
www.zeotech.com.au
Zeotech Limited | ASX: ZEO ACN 137 984 297 Level 27, Santos Place, 32 Turbot Street, Brisbane QLD 4000 P: +61 7 3181 5523 | E: [email protected]
==> picture [149 x 43] intentionally omitted <==
Whilst ASX remains the prime channel for market-sensitive news, investors and other interested parties are encouraged to follow Zeotech on Twitter (@zeotech10) and LinkedIn. Subscribe to ZEOTECH NEWS ALERTS - visit https://zeotech.com.au/contact/
Forward-looking Statements
This release may contain certain forward-looking statements with respect to matters including but not limited to the financial condition, results of research and development, operations, and business of Zeotech, and certainty of the plans and objectives of Zeotech with respect to these items.
These forward-looking statements are not historical facts but rather are based on Zeotech current expectations, estimates and projections about the industry in which Zeotech operates, and its beliefs and assumptions.
Words such as "anticipates," "expects," "intends," “potential,” "plans," "believes," "seeks," "estimates", "guidance," and similar expressions are intended to identify forward-looking statements and should be considered an at-risk statement.
Such statements are subject to certain risks and uncertainties, particularly those risks or uncertainties inherent in the process of developing technology and in the endeavour of building a business around such products and services.
These statements are not guarantees of future performance and are subject to known and unknown risks, uncertainties, and other factors, some of which are beyond Zeotech's control, are difficult to predict, and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements.
Zeotech cautions shareholders and prospective shareholders not to place undue reliance on these forward-looking statements, which reflect the view of Zeotech only as of the date of this release.
The forward-looking statements made in this announcement relate only to events as of the date on which the statements are made. Zeotech will not undertake any obligation to release publicly any revisions or updates to these forward-looking statements to reflect events, circumstances or unanticipated events occurring after the date of this announcement except as required by law or by any appropriate regulatory authority.
www.zeotech.com.au
Zeotech Limited | ASX: ZEO ACN 137 984 297 Level 27, Santos Place, 32 Turbot Street, Brisbane QLD 4000 P: +61 7 3181 5523 | E: [email protected]