A slag-lime job needs two deliveries that land in the right order: slag cement dry to the grade, then lime as slurry within four hours. Hasten supplies both from Houston to any Texas jobsite and quotes the whole system per ton of treated soil, so the comparison to a lime job is one number.
Any Texas county. Same-day turnaround.
| Material | Dose | How it arrives | Timing on site |
|---|---|---|---|
| Slag cement (GGBFS Grade 100) | 5% of dry soil weight | Bulk pneumatic tanker, about 25 tons, spread dry | First. Mixed until homogeneous |
| Lime, as slurry | 1% (2% on fat clay, two-step) | Quicklime slaked on site, hydrated lime slurry, or commercial slurry from a local plant | Within four hours of finishing the slag mix; compact within two hours after |
| Water | To 2 points of optimum | Jobsite | With the lime, per the spec |
The four-hour window is the whole job. Slag placed and not activated in time is filler. We schedule the slag and the lime deliveries together, and we will not send the slag until the lime is confirmed.
For one acre treated 8 inches deep, about 1,525 tons of dry soil, material only. Slag is a placeholder price until quoted; lime at $240 per ton.
| System | Lime trucks per acre | Total trucks | Material per treated ton |
|---|---|---|---|
| 6% lime alone at $240 | 3.7 | 3.7 | $14.40 |
| 5% slag at $120 + 1% quicklime | 0.6 | 3.7 | $8.40 |
| 5% slag at $180 + 1% quicklime | 0.6 | 3.7 | $11.40 |
| 5% slag at $120 + 2% quicklime (fat clay) | 1.2 | 4.3 | $10.80 |
Slag-lime uses a sixth of the lime of a straight lime job and lands well under it on material cost. Where cheap kiln dust is still available on ordinary low-sulfate clay, kiln dust is cheaper still. Slag-lime is the answer where lime heaves, not a universal replacement, and we will say which applies to your soil.
| Region | Slag cement | Lime slurry |
|---|---|---|
| Houston metro | Next-day | Same day, commercial slurry plants nearby |
| Dallas-Fort Worth | Two to three days by truck | Local slurry or slaked on site |
| Austin, San Antonio, Waco, Temple | Two to three days; Hasten yard at Elgin for staging | Local slurry or slaked on site |
| Laredo, Eagle Pass | Quoted per job; three to four days typical | Slaked on site; plan the water |
| West Texas, Panhandle | Quoted per job | Slaked on site |
Where the jobs are: Interstate 35 from Sherman through Dallas, Midlothian, Waco, Austin and San Antonio to Laredo and Eagle Pass, plus Childress, Alpine and Van Horn. That corridor is where TxDOT documented the failures and where slag-lime earns its keep.
Swell and strength numbers, four field sites, the ratio logic and the FM 3338 construction sequence, on one page.
Loaded in Houston, staged at Elgin, delivered to any Texas county.
Yes. Slag cement from a Houston producer on the TxDOT list, and lime as quicklime, hydrated lime or commercial slurry depending on the job setup. We schedule them together so the four-hour window is met.
Per ton of treated soil, from your acreage, depth and dosage. It is the only number that compares fairly to a lime job, because the dosages differ.
Often, yes, and on the first jobs it is usually cheaper than owning slaking equipment. We will price both ways.
The slag is a qualified material under DMS-4620 and TxDOT has written a special provision for slag-lime stabilization on FM 3338. Acceptance under a given item is the district materials engineer's call.
A week for the Houston metro, two for DFW and Central Texas, more for the border and West Texas. Sulfate jobs are usually known well ahead from the geotech, so call when the report lands.
County, square yards, depth, and the geotech. A per-treated-ton price back today.
Call 832-655-7763