AMERICAN
CONCRETE
IS FAILING.
Driveways cracking within two winters. Pool decks spalling by fall. Patios settling before the landscaping is done. Thousands of pools across Texas destroyed by concrete cancer, the result of a fly ash supply chain that collapsed in 2018 without a single industry warning. This is not bad luck. This is a broken system operating at national scale.
Concrete fails.
Most of the industry uses one word, cracking, to mean the whole problem. That collapses four different things into one, and it is why a homeowner can be told a slab is fine while the mechanism underneath it is still running. Cracking is one common visible symptom of concrete failure. Spalling and scaling are the breakdown and chipping away of a concrete surface, and across the Sun Belt they are frequently a larger concern than cracking. Alkali silica reaction is an internal expansive reaction between reactive silica in the aggregate and alkalis in the cement paste, and it is the most serious mechanism of the three.
Every term used on this page is defined once, as a standalone sentence, in the PSIP definitions. The record that captures which of them applied to a given slab is the documented pour.
Physics does not change by zip code.
From Middle Tennessee's freeze-thaw cycling to Florida's reactive aggregate pools to Texas's ASR epidemic, the failure pattern is identical everywhere. Wrong PSI. No pre-hydration. No documentation. No accountability. PSIP was developed in Tennessee because this market made every shortcut visible. That same framework now protects concrete in every state where the climate fights back.
Water expands nine percent when it freezes. Microcracks become failures in three winters. The chemistry of alkali-silica reaction does not negotiate with marketing claims. The standards exist to address these conditions. ACI 318 and ACI 332 specify exposure class. ACI 305 specifies hot weather concreting. ACI 306 specifies cold weather concreting. The standards are correct. The standards are not enforced on the slab in front of your house on the day it is poured.
PSI is an output, never an input.
Most residential concrete is still specified by habit. A default PSI the plant always sends. The disciplined concrete markets, Minnesota, Wisconsin, the Upper Midwest, moved past PSI as the input decades ago. They specify by exposure class. ACI 318 and ACI 332 categories F0 to F3 for freeze-thaw, S0 to S3 for sulfate exposure, W0 to W2 for water, and C0 to C2 for chloride. The categories match the mix to the conditions it will actually face.
Strength, water-cement ratio, air content, and SCM strategy all follow from that analysis. PSI is one output among many. It is never the input. Dr. Tyler Ley of Oklahoma State University put it plainly on the Concrete Logic Podcast, Episode 103: "If we don't tell them what performance we want, if we don't establish what level of whatever performance matters to us, then we're not gonna get our needs met." PSIP specifies every certified pour to its exposure class for that reason. Every certified pour is specified to its exposure class, justified in writing, and retained in the closeout packet.
When concrete fails, there is no record.
No batch ticket verification. No pre-pour checklists. No signed closeout packets. When concrete fails, there is no record of what was done, and no defensible position for the homeowner, the builder, or the contractor. The supplier who substituted material without disclosure faces no documented obligation, because no document was ever required. The cost falls where the documentation does not exist.
ASTM Committee C09 was established in 1914. For over a century, C09 has defined how concrete is specified, mixed, sampled, tested, and accepted in the United States. The standards are technically complete. ASTM does not enforce the standards in the field. ASTM was never designed to enforce the standards in the field. The committee writes the rules. The committee does not document whether the rules were followed on the slab in front of your house on the day it was poured.
The American Concrete Institute publishes ACI 318. The International Concrete Repair Institute covers repair and rehabilitation. ACI and ICRI operate individual technician certifications. None of these institutions documents the execution of the work in real time on residential and pool construction. None of them was designed to. The gap is structural. It is the absence of a layer the American concrete industry never built.
Texas pools and the concrete cancer epidemic.
In early 2018, three Texas coal-fired power plants closed within months of each other. Monticello in Titus County, Big Brown in Freestone County, and Sandow in Milam County. Combined capacity, approximately 4,273 megawatts. Roughly twenty percent of coal capacity in the ERCOT region. These plants did not just generate electricity. They generated Class F fly ash, the low-calcium, high-silica byproduct of bituminous coal combustion that had been the primary supplementary cementitious material protecting Texas concrete from alkali-silica reaction since the 1970s.
When the plants closed, the regional fly ash supply collapsed. The ready-mix producers serving Central Texas had two options. Reformulate the mix designs with verified alternative supplementary cementitious materials and absorb the cost and the testing burden. Or remove the fly ash, hold the price, and continue delivering concrete that looked the same on the batch ticket but did not contain the protective chemistry it had carried for thirty years.
Most chose the second option. The batch tickets stopped showing fly ash. The pool builders and concrete contractors purchasing the material were not notified. The homeowners signing the contracts were not informed. The pour proceeded.
In August 2023, the Texas Judicial Panel on Multidistrict Litigation consolidated the ASR lawsuits into a single pretrial court in Travis County. The MDL has grown to more than one hundred cases. Texas Monthly documented the failures. KB Custom Pools filed for bankruptcy. Cody Pools, one of the largest builders in the state, entered litigation with three of its insurance carriers in the United States District Court for the Western District of Texas in two separate federal actions. Those cases are positioned to set precedent on whether insurance carriers must cover ASR damage as a construction defect.
The Texas failures are the most visible recent example. They are not the only example. They are the visible edge of a structural failure that has been latent in American concrete construction for over a century.
A new cement chemistry, poured without warning.
According to USGS Mineral Commodity Summaries 2026, blended cement accounted for 63 percent of total United States cement shipments during the first 9 months of 2025, and 95 percent of those blended shipments were estimated to be portland limestone cement, ASTM C595 Type 1L. The transition from Type I to Type 1L is a chemistry change. Type 1L incorporates up to fifteen percent finely ground limestone. The reactivity is different. The water demand is different. The behavior with admixtures is different. The behavior in cold weather is different.
The transition was carried out by the cement industry as a sustainability move. The admixture reformulation that should have accompanied the chemistry change was not carried out at the mix-design level for most residential concrete. The contractors pouring the slab were not notified. The mix designs they were ordering by habit kept producing what looked like the same concrete on paper. The concrete that arrived on the truck was a different material.
The combination of the Type 1L transition and the fly ash collapse compounds. The cement chemistry changed at the same time as the supplementary cementitious material that traditionally protected against alkali-silica reaction disappeared. Most residential concrete contractors in the United States are pouring a material that is different from the one they were trained on, with no documentation that the change has occurred, and no protocol for adjusting the mix design to compensate.
The Six Pillars close the gap.
PSIP is the documentation and scoring layer that converts ASTM and ACI standards from published reference into field-executed record. Every certified pour is specified to its exposure class. Every batch ticket is verified before the truck unloads. Every closeout packet is signed and retained. The protocol is structurally independent of every material supplier. The protocol scores. The protocol does not recommend.