Austin sits on the Interstate 35 sulfate corridor, where Blackland Prairie clay carries the gypsum that turns a lime job into a heave problem. Hasten has a yard at Elgin, 20 miles east of Austin, and supplies Grade 100 slag cement from the Houston grinding hub for Central Texas concrete producers and for slag-lime stabilization on the soils that need it.
Same-day turnaround during business hours.
TxDOT's sulfate guidance traces the worst heaves along Interstate 35 on the Eagle Ford formation. Central Texas subdivisions, roadways and pads on gypsiferous Blackland clay are exactly where straight lime fails years after the job closes.
Data centers, distribution centers, mid-rise and highway work across Travis, Williamson and Hays counties. Slag at 35 to 50 percent replacement under TxDOT Item 421 cuts cost and heat; 70 percent in mass pours.
Slag cement is ground in Houston and moves to Central Texas by truck. Hasten's Elgin yard puts staging within reach of the whole metro, and the same trucks carry fly ash and lime for blends.
Grade 100 from a producer on the TxDOT DMS-4620 list, producer code on every quote. Slag-lime for stabilization rides a special provision; the Austin District decides acceptance job by job.
From TxDOT research project 0-4240, the same work that produced the 5 percent slag, 1 percent lime recommendation.
| Mix at 20,000 ppm sulfate | 3-D swell |
|---|---|
| 5% slag cement + 1% lime | 7% |
| 3% slag cement + 3% lime | 24% |
| 6% lime alone | 42% |
Lime alone also lost strength between 7 and 28 days, 99 psi to 82. Slag-lime went from 127 to 198. On fat Blackland clay that needs a working platform, 2 percent lime added in two steps gets the plasticity down without bringing the swell back. The full research and the TxDOT construction sequence are on slaglimestabilization.com.
| Detail | What to expect |
|---|---|
| Material | ASTM C989 Grade 100 or better, Houston producer on the TxDOT list |
| Delivery | Bulk pneumatic tanker, about 25 tons; direct to jobsite or silo, staged via Elgin when it helps |
| Lead time | Two to three days from Houston; faster when staged |
| Minimum | Full loads; under 20 tons is a shortload with a shortload fee |
| Paperwork | Mill certificate with fineness and SO3, producer code, SDS |
| Also from Elgin | Class C fly ash, lime, kiln dust blends |
For stabilization jobs, send the geotech first. Sulfate and plasticity index decide whether slag-lime fits and at what ratio. We will tell you if the soil does not need it, which is worth more than a sale.
The chemistry, the field results and the TxDOT placement sequence for slag-lime, on one page for the engineer who has to approve it.
From the Elgin yard and direct from Houston, across the Austin metro and down I-35.
No. Every Texas slag grinder is in Houston. Hasten loads there, stages at its Elgin yard when useful, and delivers across Central Texas.
Blackland and Eagle Ford clays along I-35 carry gypsum. Lime alone forms ettringite and heaves. TxDOT research found 5 percent slag cement with 1 percent lime cut swell from 42 percent to 7 percent on the same soil.
Two to three days by truck from Houston for a 25-ton load, faster when material is staged at Elgin. Call ahead of a fixed schedule.
Yes. Houston producer on the DMS-4620 slag cement list, Grade 100 or better, producer code on every quote. Slag-lime stabilization acceptance is a district decision.
Yes. Class C fly ash, lime and kiln dust blends move through the same Elgin yard, which is why we can supply both halves of a slag-lime job.
Quantity, delivery city, timeline, and the geotech if it is a stabilization job. A price back today.
Call 832-655-7763