{"id":974,"date":"2026-07-25T01:55:26","date_gmt":"2026-07-25T01:55:26","guid":{"rendered":"http:\/\/localhost:8081\/soyleitechnologies\/sip-1111-biomag-boone-iowa-18-percent-rap\/"},"modified":"2026-08-01T13:44:06","modified_gmt":"2026-08-01T13:44:06","slug":"sip-1111-biomag-boone-iowa-18-percent-rap","status":"publish","type":"post","link":"https:\/\/soylei-dev.ecochran.dyndns.org\/soyleitechnologies\/sip-1111-biomag-boone-iowa-18-percent-rap\/","title":{"rendered":"Boone, Iowa: 18% RAP and Polymer Performance with BioMAG\u2122"},"content":{"rendered":"

On November 8, 2019, Iowa State University and its partners paved the north parking lot at the BioCentury Research Farm near Boone, Iowa. The United Soybean Board showcase paired 18% reclaimed asphalt pavement<\/strong> with a formulation containing 6% BioMAG\u2122 and 2% SBS<\/strong>.<\/p>\n

BioMAG\u2122 combines 50% SIP-1111\u2122 rejuvenator<\/strong> with 50% biopolymer<\/strong>. The Boone project put that formulation into full-scale hot-mix production while measuring continuous binder grade, \u0394Tc, and Multiple Stress Creep Recovery before modification and after RAP recovery.<\/p>\n

\n \"Aerial
Full-scale placement at the BioCentury Research Farm north parking lot.<\/figcaption><\/figure>\n

A terminal-ready blending sequence<\/h2>\n

The Boone team concentrated BioMAG\u2122 with SBS to promote interaction between the materials, then diluted the concentrate to the target formulation. Bituminous Materials blended the liquid binder before delivery to the paving contractor. The project tracking record documents vessel blending at the terminal over three and a half days before shipment.<\/p>\n

This production sequence connected soybean-based rejuvenation and polymer chemistry with existing terminal and contractor equipment. The final formulation used 2% SBS<\/strong>; the project case study identified 4\u20135% SBS as the typical range for the reported elastic recovery.<\/p>\n

\n \"Paver
Paving and compaction of the BioMAG\u2122 demonstration mixture.<\/figcaption><\/figure>\n

Broader grade range with 2% SBS<\/h2>\n

The unmodified 64-24 source binder measured continuous critical temperatures of 66.2\u00b0C and -24.3\u00b0C<\/strong>. After modification with 6% BioMAG\u2122, 2% SBS, and 0.13% sulfur, the binder measured 69.9\u00b0C and -30.5\u00b0C<\/strong>. That expanded the continuous temperature range from 90.5\u00b0C to 100.4\u00b0C<\/strong> while improving both the high- and low-temperature endpoints.<\/p>\n

At 58\u00b0C, MSCR recovery increased from 1.21% to 59.63%<\/strong>, while Jnr<\/sub> decreased from 1.45 to 0.4006 kPa-1<\/sup><\/strong>. The modified binder also recorded 40.61% recovery and 1.1802 kPa-1<\/sup> Jnr<\/sub> at 64\u00b0C.<\/p>\n

Performance after 18% RAP recovery<\/h2>\n

Binder recovered from the 18% RAP mix measured continuous critical temperatures of 71.8\u00b0C and -29.9\u00b0C<\/strong>, a \u0394Tc of +1.0\u00b0C<\/strong>, and 48.58% MSCR recovery at 58\u00b0C<\/strong>. Its Jnr<\/sub> measured 0.3861 kPa-1<\/sup> at 58\u00b0C and 1.1027 kPa-1<\/sup> at 64\u00b0C.<\/p>\n

\n\n\n\n\n\n\n\n
Boone binder results reported in the BioMAG\u2122 case study<\/caption>\n
Binder condition<\/th>\nContinuous PG endpoints<\/th>\n\u0394Tc<\/th>\nMSCR at 58\u00b0C<\/th>\nMSCR at 64\u00b0C<\/th>\n<\/tr>\n<\/thead>\n
64-24 source binder<\/th>\n66.2 \/ -24.3\u00b0C<\/td>\n-1.1\u00b0C<\/td>\n1.21% recovery; 1.45 kPa-1<\/sup> Jnr<\/sub><\/td>\nNot reported<\/td>\n<\/tr>\n
6% BioMAG\u2122 + 2% SBS<\/th>\n69.9 \/ -30.5\u00b0C<\/td>\n+0.3\u00b0C<\/td>\n59.63% recovery; 0.4006 kPa-1<\/sup> Jnr<\/sub><\/td>\n40.61% recovery; 1.1802 kPa-1<\/sup> Jnr<\/sub><\/td>\n<\/tr>\n
Recovered with 18% RAP<\/th>\n71.8 \/ -29.9\u00b0C<\/td>\n+1.0\u00b0C<\/td>\n48.58% recovery; 0.3861 kPa-1<\/sup> Jnr<\/sub><\/td>\n31.05% recovery; 1.1027 kPa-1<\/sup> Jnr<\/sub><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

What Boone demonstrates for asphalt teams<\/h2>\n

Boone brought terminal blending, polymer extension, reclaimed asphalt, and full-scale placement into one production sequence. With only 2% SBS, the BioMAG\u2122 formulation delivered a 100.4\u00b0C continuous grade span before RAP recovery. After 18% RAP entered the mix, the recovered binder retained a -29.9\u00b0C low-temperature endpoint, positive \u0394Tc, and 48.58% MSCR recovery at 58\u00b0C.<\/p>\n

\n \"Completed
Completed BioMAG\u2122 pavement at the Boone demonstration site.<\/figcaption><\/figure>\n
\n \"Five\n <\/picture>
Boone binder response through modification and recovery<\/strong> The BioMAG\u2122 plus SBS formulation produced a strong MSCR response, and the recovered 18% RAP binder retained much of that response.<\/figcaption><\/figure>\n
\n

Higher MSCR recovery, lower Jnr, and less-negative \u0394Tc are favorable. Missing source-binder 64\u00b0C values remain absent.<\/p>\n

\n\n\n\n\n\n\n\n
Boone source, modified, and recovered-binder properties.<\/caption>\n
Stage<\/th>\n\u0394Tc (\u00b0C)<\/th>\nRecovery 58\u00b0C (%)<\/th>\nJnr 58\u00b0C (kPa\u207b\u00b9)<\/th>\nRecovery 64\u00b0C (%)<\/th>\nJnr 64\u00b0C (kPa\u207b\u00b9)<\/th>\n<\/tr>\n<\/thead>\n
Source binder<\/th>\n-1.1<\/td>\n1.21<\/td>\n1.45<\/td>\nNot reported<\/td>\nNot reported<\/td>\n<\/tr>\n
6% BioMAG\u2122 + 2% SBS<\/th>\n0.3<\/td>\n59.63<\/td>\n0.4006<\/td>\n40.61<\/td>\n1.1802<\/td>\n<\/tr>\n
Recovered 18% RAP binder<\/th>\n1<\/td>\n48.58<\/td>\n0.3861<\/td>\n31.05<\/td>\n1.1027<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Source: Case Studies in BioMAG. BioCentury Research Farm section, Table 4, PDF page 5<\/p>\n<\/div>\n

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BioCentury Research Farm project video<\/h2>\n
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