Concrete, in its simplest form, is made by mixing a cementitious binder, aggregates and water. A sustainable concrete structure is constructed to ensure that the total environmental impact. United states society on dams innovative dam and levee design and construction for sustainable water management 32nd annual ussd conference new orleans, louisiana, april 2327, 2012. Concrete s flexibility offers many opportunities for designers to influence the environmental, economic and social credentials of their projects, including performance credentials such as fire, durability, acoustics and adaptability. Deckslabs andslab spans ofbridges 400min 475max roofsections of exposedtopboxculverts otherportions ofstructures. Bes 6001 is a framework standard for responsible sourcing of construction products and is the master standard against which to demonstrate compliance. Specify responsible sour ced concrete bes 6001 specifying concrete tips. Minimum cement content maximum wcm maximum scm content nrmca c t pl t c tifi ti q lit nrmca concrete plant certification quality nrmca greenstar plant certification ems. Lionel lemay1, colin lobo2 and karthik obla3 1 national ready mixed concrete association, 1244 crane blvd. Sustainable benefits of concrete structures the concrete initiative. Specifying sustainable concrete thermal mass explained concrete and masonry are building materials that steadily absorb any heat that comes into contact with surfaces. Minimising the environmental impact of concrete requires a detailed understanding of location factors and constituent materials. Sustainable concrete should have a very low inherent energy requirement.
Innovative dam and levee design and construction for. All constituent materials are also plentiful in supply locally and. Availability type of aggregate use of concrete local supply or low carbon transportation dont rule out primary virgin aggregates 3. Structural engineers can influence the performance and environmental impact of structures through effective design and specifications regardless of the materials. In australia, a large proportion of concrete is produced in premixed concrete batching plants and delivered in a plastic state to construction sites.
Sustainable concrete for the 21st century concept of strength. If concrete is to be an ecofriendly, and sustainable driving force and construction material for social change, the need is to produce durable concrete with. Embodied co2 eco2 of concrete should not be considered or specified in isolation of other factors such as strength gain. Consider recycled or secondary aggregates, depending on. Specify bes 6001 responsiblysourced concrete and reinforcement to gain maximum credits under breeam and the code for sustainable homes. This publication is intended to assist designers in optimising the sustainable credentials of concrete through specification. This tech brief focuses exclusively on sustainability considerations associated with concretesurfaced pavement structures and the materials used in their. A dedicated, interdisciplinary team working on concrete and infrastructure science, engineering, and economics. Construction materials recycling association, 2010. Maximum points possible for accredited concrete products in breeam and the code for sustainable homes.
68 1168 145 1490 1328 211 1411 635 507 1609 925 434 248 503 769 1027 576 899 676 521 653 91 268 852 937 765 904 1531 1598 1066 1313 707 932 810 1058 19 541 349 954 917 895 768 202 956 574 150 887