Structural Concrete Waterproofing from Cementaid
New Performing Arts Venue - The State Theatre Centre of WA (STCWA) Perth, Western Australia
Reinforced Concrete - Waterproofing & Durability;
Everdure Caltite & 3CC - Hydrophobic Pore-blocking Ingredients (HPI)
Design-Life, Maintenance-Free, Impervious & Corrosion-Proofed Structural Concrete
CLIENT: WESTERN AUSTRALIAN DEPARTMENT OF TREASURY AND FINANCE - BUILDING MANAGEMENT AND WORKS
PROJECT OWNER: WESTERN AUSTRALIAN DEPARTMENT OF CULTURE AND THE ARTS
ENGINEER: AIREY TAYLOR CONSULTING
MAIN CONTRACTOR: JOHN HOLLAND CONSTRUCTIONS
WATERPROOFING: Everdure CALTITE concrete - 900 m3; 3CC concrete - 2,225 m3
Opened in January 2011, the $91M State Theatre Centre of WA (STCWA) is a world class
venue for performing arts, located at a prominent corner of the Perth Cultural Centre, home to
the Art Gallery of Western Australia, the WA Museum, the State Library, the Perth Institute of
Contemporary Arts, Arts House and several other culture and arts organisations.
A large part of the building is positioned
underground for economy of footprint and includes
the multi-purpose Studio Underground and artists'
Green Room, make-up and changing areas.
The high water table level in the reclaimed Lake
Kingsford site selected for the venue, means the
building is subject to more than 60kPa design uplift
pressure (up to 85kPa / 7.4m at the lift pit area).
Moreover groundwater/soils analysis indicated
presence of Potential Acid Sulphate Soils (PASS).
Achieving 100+ year design-life was a requirement set by the Client. Prevention of moisturevapour
ingress was another design requirement, to reduce the risk of dampness and fungal
growth in timber and fabric finishes. These conditions meant that a completely effective and
permanent waterproofing system for the concrete substructure was required.
STCWA, Perth; Raft slab construction; CALTITE concrete "composite-casting" to top 300mm thickness of base slab
Installation of waterproof tanking barriers would be
difficult and time consuming and require sacrifice of
valuable internal area. In addition, no tanking system
is certified for the stated design life.
Enhancement of the water and moisture vapourresisting
properties of the concrete shell itself
offered the most cost-effective and sustainable
solution to achieving the required waterproofing and
durability performance and was considered a critical
design objective.
Due to the presence of Potential Acid Sulphate Soils (PASS) in the reclaimed lake site, the
design team selected diaphragm and secant-pile walls made using Self Consolidating Concrete
(SCC) with proven Hydrophobic Pore-blocking Ingredients (HPI), to form the water and soil
retention system. Cementaid Everdure CALTITE and 3CC Hydrophobic Pore-blocking Ingredient
(HPI) were selected to provide the design-life waterproofing and durability required for the
substructure concrete.
1 - Everdure CALTITE "composite" raft slab after finishing. 2 - 3CC concrete pile wall (top left), Diaphragm wall section (right) and CALTITE "composite" slab. 3 - Completed Studio Underground.
Cementaid 3CC Hydrophobic Pore-blocking Ingredient
was used to waterproof concrete used in the diaphragm
and secant-pile walls. EVERDURE CALTITE HPI was used in
casting the top 300mm of the 600mm thick Basement
Raft Slab, as well as in the exposed concrete cladding
panels. The HPI concrete placements were all completely
successful with only minor post-construction seepage
through a section of faulty construction joint, which was
easily and quickly rectified by acrylic grout injection.
The Centre's January 2011 grand opening and subsequent WA Festival of Arts were a major
success. The HPI concrete used successfully and cost-effectively achieved the project's
waterproofing and durability objectives. The Centre's completed basement theatre and other
areas are bone dry and performing to the satisfaction of all parties.
To get the exceptional design, construction, performance & cost advantages of
HPI concrete working for you in your projects,
Call your local CEMENTAID Technical Service Centre NOW!
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