Solutions · Construction Chemicals
Concrete that survives a Saudi summer pour
Admixtures, non-shrink grouts, repair mortars, anchoring adhesives, sealants and industrial flooring, the chemistry that makes the mix work at 45 °C.
The problem
Hot weather is not an edge case here, it is the default. Slump loss on the truck, plastic shrinkage cracking before the finishers are off the slab, and grout that flashes off before it flows, these are the ordinary failure modes of concreting through a Saudi summer.
How MST answers it
MST supplies admixture and grout systems selected for the pour temperature and the placement window, not just the strength class: with trial-mix support, ACI 305 hot-weather guidance and compatibility confirmed between admixture, cement and any supplementary cementitious material in the mix.
Product lines
What sits inside this solution
Browse the solution by family. Each line is supplied against the standard named on your specification, send the clause and we will confirm the grade and the certification route.
Concrete admixtures
- PCE Superplasticisers & Water Reducers
- Retarders & Hot-Weather Admixtures
- Accelerators & Set Controllers
- Air-Entraining & Waterproofing Admixtures
Grouts, repair & anchoring
- Non-Shrink Cementitious Grouts
- Epoxy Grouts & Machine Bases
- Structural Repair Mortars
- Chemical Anchoring Adhesives
- Curing Compounds & Bonding Agents
Sealants & flooring
- Polyurethane & Silicone Joint Sealants
- Epoxy & PU Industrial Flooring
- Surface Hardeners & Dry Shakes
- Protective Coatings & Paints
Product schedule
Representative supply range
Indicative of normal stock and made-to-order supply. Project-specific grades, lengths and coatings are confirmed against the approved submittal before order.
PCE Superplasticiser
ASTM C494 Type F / G, EN 934-2
- Material
- Polycarboxylate ether
- Size
- 200 L drums, 1 000 L IBC
- Finish
- 0.6 – 1.8 % by cement weight
Set-Retarding Admixture
ASTM C494 Type B / D
- Material
- Modified lignosulphonate
- Size
- 200 L drums, 1 000 L IBC
- Finish
- Dosed to haul and placement time
Non-Shrink Cementitious Grout
ASTM C1107 Grade B / C
- Material
- Cementitious, pre-blended
- Size
- 25 kg bags, 10 – 100 mm thickness
- Finish
- Flowable to fluid consistency
Structural Repair Mortar
EN 1504-3 Class R4
- Material
- Polymer-modified, fibre reinforced
- Size
- 25 kg bags, 10 – 50 mm per layer
- Finish
- Hand or spray applied
Epoxy Anchoring Adhesive
EN 1504-6, ETA / ICC-ES
- Material
- Two-component epoxy
- Size
- 345 / 585 ml cartridges
- Finish
- Cracked and uncracked concrete
Polyurethane Joint Sealant
ISO 11600 F-25LM, ASTM C920
- Material
- One or two-component PU
- Size
- 600 ml sausages, 25 % movement
- Finish
- Grey, white, custom
Curing Compound
ASTM C309 Type 1-D
- Material
- Wax or resin emulsion
- Size
- 200 L drums, 4 – 5 m²/L
- Finish
- Fugitive dye for coverage check
Epoxy Floor Coating System
EN 13813 SR-B2.0
- Material
- Solvent-free epoxy resin
- Size
- 0.3 – 3 mm build, primer + topcoat
- Finish
- Self-levelling or broadcast
Sizes shown are the standard supply envelope; larger diameters and non-standard lengths are produced to order. All grades are supplied with EN 10204 3.1 inspection certification referenced to the heat number unless otherwise agreed.
Admixture selection by ASTM C494 type
Most specification arguments about admixtures resolve into one question: which C494 type does the pour actually need? Type and dosage follow from haul time, ambient temperature and the required strength gain, in that order.| Type | Function | Typical use |
|---|---|---|
| Type A | Water reducing | General workability gain |
| Type B | Retarding | Long hauls, hot placement |
| Type C | Accelerating | Early strike, cool nights |
| Type D | Water reducing + retarding | The Saudi summer default |
| Type F | High-range water reducing | Low w/c, high strength |
| Type G | High-range + retarding | Mass pours, pumped concrete |
Always verify admixture compatibility with the specific cement and any GGBS, fly ash or silica fume in the mix by trial batch. Dosage figures on a datasheet are a starting point, not an approval.
Applications
Where this is used
- Hot-weather and mass concrete pours
- Machine bases, turbine and pump grouting
- Structural concrete repair and rehabilitation
- Post-installed anchoring into concrete and masonry
- Movement and construction joint sealing
- Warehouse, plantroom and car park flooring
Environment & finish
Corrosion strategy, by site condition
The Kingdom is not one environment. The finish that lasts twenty years in Riyadh will fail inside a warranty period on the Gulf coast.
Placing above 35 °C
ACI 305 practice governs: chilled or iced mixing water, retarding admixture matched to the haul time, and curing started immediately rather than at the end of the shift. A PCE superplasticiser holds slump far longer than a naphthalene-based product at the same dosage, the difference shows up as placeability at the far end of the pour.
Grout flow window
Cementitious grout that performs to ASTM C1107 in a laboratory can lose its flow in minutes on a hot base plate. Substrate pre-soaking, shaded material storage and mixing water temperature are specified alongside the product, and a flow-cone trial on site is worth the hour it costs.
Governing standards
What this discipline is measured against
- ASTM C494 / EN 934-2 admixtures
- ASTM C1107 non-shrink grout
- EN 1504-3 concrete repair
- EN 1504-6 anchoring
- ASTM C309 curing compounds
- ASTM C920 / ISO 11600 sealants
- ACI 305 hot weather concreting
- ETA / ICC-ES chemical anchors
Where a project specification calls out a standard not listed here, send the clause reference with your enquiry, the technical desk will confirm equivalence or source to the named standard directly.
How we source
Three corridors, one certification regime.
Where a line comes from changes its lead time, its certification route and its landed cost. We state the corridor openly rather than hiding it behind 'globally sourced', it is usually the first thing a procurement manager needs to know.
Europe, UK & USA
Germany · Italy · UK · USA
Western-spec lines where the consultant names an EN or ASTM source mill, and ETA-assessed anchors and facade systems.
Gulf & Kingdom
KSA · UAE
Local manufacture and stock for programme-critical lines, with the shortest lead time and full local content and Saudization credentials.
Asia & Türkiye
China · Taiwan · Malaysia · Türkiye
Volume manufacture on certified lines where the specification permits it, same certification regime, tested and documented to the same standard.
Other disciplines
Explore the rest of the range
Civil Solutions
Structural bolting, anchor bolt assemblies, rebar couplers and formwork accessories, with the waterproofing, tanking and thermal insulation around the concrete.
MEP Solutions
Beam clamps, threaded rod, channel support, cable containment, pipe fixings and plumbing systems, the support and distribution layer, drill-free where the structure allows.
Sustainable Solutions
Flange bolting for refineries and gas plants, plus mounting structures, balance-of-system and earthing for utility-scale and rooftop solar.
Send us your specification
Send the bolting schedule or specification section. We return grade confirmation, finish recommendation, lead time and certification route.