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Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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The London-based Institutional Investors Group on Climate Change (IIGCC) has recently approached CRH Plc, Heidel- bergCement AG and LafargeHolcim Ltd. about commitments to achieving net zero carbon dioxide emissions no later than 2050. The call to action aligns with strategies in the United Nations Conference of Parties' (COP 21) 2015 Paris Agreement. The 150-plus signatory countries volunteer CO 2 emission reductions whereby projected global temperatures rise no more than 1.5°C over this century. "The cement sector needs to dramatically reduce the contribution it makes to climate change. Delaying or avoid- ing this challenge is not an option," explains IIGCC CEO Stephanie Pfeifer. "Major economies are increasingly adopting net zero emission targets. The cement sector needs to get ahead of profound transformation by addressing barriers to decar- bonization in the short- to medium-term if companies are to secure their future." The group engages the global cement, aggregate and concrete elite in "Investor Expectations of Companies in the Construction Materials Sector." The document draws new parallels based on embellished versions of tired arguments: As the most widely used construction material the world over, cement is the source of 7 percent (what happened to the 5 percent or 6 percent benchmark?) of global man-made CO 2 emissions. If it were a country, the cement industry would trail only China and the U.S. among global CO 2 emitter. "Investor Expectations" takeaways center on greenhouse gas emission reduction and Paris Agreement fealty: • Companies should commit to achieving net zero carbon emissions over the next three decades with targets that are "science-based … in line with the decarboniza- tion required to keep global temperatures well below 2°C warming." • Investors expect companies to engage with policy makers to pursue cost-effective climate change mitigation and an orderly transition to a low-carbon economy. Heavy-handed undercurrent aside, "Investor Expectations" cites cement and concrete producers' strides in lowering the CO 2 embodied in finished slabs and structures, and specifically calls out HeidelbergCement's emissions-reduction strategies. IIGCC would strengthen its case if it acknowledged how CRH—as the world's largest portland cement consumer—has a vested interest in optimizing the "clinker" or pure portland cement factor in every yard of ready mixed, 8-in. concrete masonry unit equivalent, and ton of precast it ships. And why not credit commitments, mirroring Paris Agreement terms, that a LafargeHolcim executive and technical staff delegation spelled out nearly four years ago in COP 21 sessions? If they are true to their embrace of science and transparency, IIGCC members or allies need to look beyond CO 2 -intensive cement plant combustion and cal- cination processes. A team from CalPortland Co. weighs the effective emissions reversal or retrieval in a 10-page report, "Incorporating the Effect of Carbonation in Concrete Life Cycle Assessment." (note "CalPortland documents glaring green- house gas accounting void," pages 18-19). "Considerable attention has been paid to quantifying the industrial process emissions from cement production, however the natural reversal process of the uptake of CO 2 during concrete's material life phases is just beginning to receive the consideration it deserves," authors contend. "Carbonation occurs during the entire useful life of a concrete product, during its secondary salvaged or recycled life such as a crushed material for construction roadway base, or in its terminal life as landfill material. Every time concrete is crushed or reduced in particle size after its intended use, into its secondary use, or termination into a landfill, new opportunities to increase carbonation are created." "Incorporating the Effect of Carbonation" is a pertinent, timely contribution to the cement and concrete library. Its implications are sure to challenge the climate change crowd's intellectual honesty. EDITORIAL BY DON MARSH SEMCO PUBLISHING CORPORATE OFFICE 8751 East Hampden Avenue, Suite B-1 Denver, Colorado 80231 U.S.A. P: +1.303.283.0640 F: +1.303.283.0641 PRESIDENT/PUBLISHER Peter Johnson, EDITOR Don Marsh, ASSOCIATE EDITOR Josephine Patterson, PRODUCTION MANAGER & CIRCULATION Juanita Walters, GRAPHIC DESIGNER Michael Florman, PROJECT MANAGER Tanna Holzer, SALES U.S., CANADA SALES Bill Green, Tel +1 414 212 8266 GERMANY SALES Gerd Strasmann, Tel +49202 28146483 SCANDiNAVIA, UNITED KINGDOM AND WESTERN EUROPE SALES Jeff Draycott, Tel +44 (0) 786 6922148 Colm Barry, Tel +46 (0) 736 334670 JAPAN SALES Masao Ishiguro, Tel +81 (3) 3719 0775 AUSTRALIA/ASIA SALES Lanita Idrus, Tel +61 3 9006 1742 Concrete Products, Volume 72, Issue 8, (ISSN 0010-5368, USPS 128-180) is published monthly by Mining Media Inc., dba Semco Publishing, 10 Sedgwick Drive, Englewood, Colorado 80113. Periodicals postage paid at Englewood Colorado, and additional mailing offices. 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For microform availability, contact ProQuest at 800-521-0600 or +1.734-761-4700, or search the Serials in Microform listings at POSTMASTER: Send address changes to Concrete Products, PO Box 828, Northbrook, IL 60065-0828. REPRINTS: Concrete Products, 8751 East Hampden Avenue, Suite B1, Denver, CO 80231 USA; P: +1.303.283.0640 ext. 207, F: 1+303.283.0641, PHOTOCOPIES: Authorization to photocopy articles for internal corporate, personal, or instructional use may be obtained from the Copyright Clearance Center (CCC) at +1.978.750.8400. To obtain further information, visit COPYRIGHT 2019: Concrete Products ALL RIGHTS RESERVED Official Media Partner 4 • August 2019 Concrete carbonation facts counter claims of investors hung up on cement plant emissions

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