{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T04:46:01Z","timestamp":1785818761982,"version":"3.56.0"},"reference-count":36,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2026,8,2]],"date-time":"2026-08-02T00:00:00Z","timestamp":1785628800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100014189","name":"Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry","doi-asserted-by":"crossref","award":["RS-2025-02219948"],"award-info":[{"award-number":["RS-2025-02219948"]}],"id":[{"id":"10.13039\/501100014189","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100003624","name":"Ministry of Agriculture, Food and Rural Affairs","doi-asserted-by":"crossref","award":["RS-2025-02219948"],"award-info":[{"award-number":["RS-2025-02219948"]}],"id":[{"id":"10.13039\/501100003624","id-type":"DOI","asserted-by":"crossref"}]},{"award":["RS-2025-02219948"],"award-info":[{"award-number":["RS-2025-02219948"]}],"id":[{"id":"https:\/\/ror.org\/033w59g46","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This study presents a photocatalytic infiltration pavement block designed to combine roadside NOx removal with rainwater capture and temporary storage. TiO2 and styrene\u2013butadiene rubber (SBR) latex were incorporated into the pavement block to provide photocatalytic functionality, and direct infiltration holes were introduced to capture surface runoff, enable temporary storage, and promote delayed subgrade drainage. The effects of TiO2 and SBR latex on compressive strength and NOx removal were evaluated, while rainwater infiltration performance was examined using acrylic panels with different hole diameters, hole-area ratios, slopes, and V-groove treatments. The use of SBR latex improved the compressive strength of TiO2-containing mixtures, with T10-L5 showing an 8.1% increase compared with the corresponding non-latex mixture. The same mixture achieved the highest NOx removal efficiency, reaching 73.0% after 60 min of UV exposure. In the infiltration test, the 5 mm hole configuration gave the most stable runoff reduction, and lattice-type V-grooves improved water capture by connecting adjacent holes and guiding surface flow. A field-scale trial installation confirmed that the integrated infiltration\u2013retention system suppressed visible ponding and runoff, provided delayed subgrade drainage, and maintained pavement stability under vehicle loading. The findings indicate that the proposed block system can provide combined air-purification and stormwater-control functions.<\/jats:p>","DOI":"10.3390\/ma19153267","type":"journal-article","created":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T08:04:59Z","timestamp":1785744299000},"page":"3267","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Development of a Photocatalytic Infiltration Pavement Block for NOx Removal and Rainwater Retention"],"prefix":"10.3390","volume":"19","author":[{"given":"Jin-Seok","family":"Choi","sequence":"first","affiliation":[{"name":"Department of Regional Infrastructure Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4737-0239","authenticated-orcid":false,"given":"Ri-On","family":"Oh","sequence":"additional","affiliation":[{"name":"Research Center, Contecheng Co., Ltd., Namyangju 12248, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sang-Hyeon","family":"Park","sequence":"additional","affiliation":[{"name":"Research Center, Contecheng Co., Ltd., Namyangju 12248, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hwang-Hee","family":"Kim","sequence":"additional","affiliation":[{"name":"Research Center, GKtech Co., Ltd., Namyangju 12245, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Su-Jin","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Architectural Engineering, Keimyung University, Daegu 42601, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-5012-8435","authenticated-orcid":false,"given":"Derick Gabriel","family":"Stein","sequence":"additional","affiliation":[{"name":"Interdisciplinary Program in Earth Environmental System Science & Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chan-Gi","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Regional Construction Engineering, Kongju National University, Yesan 32439, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3603-8305","authenticated-orcid":false,"given":"Jaeheum","family":"Yeon","sequence":"additional","affiliation":[{"name":"Department of Regional Infrastructure Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1016\/j.apcatb.2010.01.002","article-title":"NOx photocatalytic degradation employing concrete pavement containing titanium dioxide","volume":"95","author":"Ballari","year":"2010","journal-title":"Appl. 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