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Rammed earth

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compressive strength might require more cement. But addition of more cement can affect the permeability of the walls. Indeed, properly constructed rammed earth endures for thousands of years, as many ancient structures that are still standing around the world demonstrate. Rammed earth walls are reinforced with rebars in areas of high
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Rammed earth can effectively regulate humidity if unclad walls containing clay are exposed to an internal space. Humidity is regulated between 40% and 60%. The material mass and clay content of rammed earth allows an edifice to breathe more than concrete edifices. This avoids problems of condensation
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The construction of an entire wall begins with a temporary frame, the "formwork", which is usually made of wood or plywood, as a mold for the desired shape and dimensions of each section of wall. The form must be durable and well braced, and the two opposing faces must be clamped together to prevent
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when the cost of modern construction materials decreased. Rammed earth is considered substandard, and is opposed by many contractors, engineers, and tradesmen. The prevailing perception that such materials and techniques perform poorly in regions prone to earthquakes has prevented their use in much
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for agriculture. When the soil excavated in preparation for a foundation can be used, the cost and energy consumption of transportation are minimal. Rammed earth is probably the least environmentally detrimental construction material and technique that is readily and commercially available today to
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of rammed earth is dictated by factors such as soil type, particle size distribution, amount of compaction, moisture content of the mix and type/amount of stabiliser used. Well-produced cement-stabilised rammed earth walls can be anywhere between 5 and 20 MPa (700 and 3,000 psi). Higher
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constructed experimental rammed-earth edifices with architect Thomas Hibben. The houses were inexpensively constructed and were sold to the public along with sufficient land for gardens and small plots for livestock. The project successfully provided homes to low-income families.
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can add significantly to the overall emissions of modern rammed earth construction. The most basic kind of traditional rammed earth has very low greenhouse gas emissions but the more engineered and processed variant of rammed earth has the potential for significant emissions.
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bulging or deformation caused by the large compressing forces. Formwork plays an important role in building rammed earth walls. Historically, wooden planks tied using rope were used to build walls. Modern builders use plywood and/or steel to build formwork.
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instructed project leaders to make do with what was available, including building rammed earth housing so that more resources could be directed to production. This policy came to be expressed through the slogan, "First build the factory and afterward
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extensively researched and constructed almost one hundred weathering walls of rammed earth. For over 30 years the college investigated the use of paints and plasters in relation to colloids in soil. In 1943, Clemson Agricultural College of
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Edifices of rammed earth are more sustainable and environmentally friendly than other building techniques that use more cement and other chemicals. Because rammed-earth edifices use locally available materials, they usually have low
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Mixing cement with the soil can counteract sustainable benefits such as low embodied energy because manufacture of the cement itself creates 1.25 tonnes of carbon dioxide per tonne of cement produced. Although it has low
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Rammed earth can contribute to the overall energy efficiency of edifices: the density, thickness, and thermal conductivity of rammed earth render it an especially suitable material for
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panels within internal and external layers of rammed earth. Depending on the type and content of binder, it must also be protected from heavy rain and insulated with vapour barriers.
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construct solid edifices. Rammed earth has potentially low manufacturing impact, contingent on the amount of cement and the amount that is locally sourced; it is often
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The thickness varies widely based on region and code. It can be as little as 6 inches (150 mm) for non load-bearing walls and up to 24 inches (600 mm) for
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to develop strategic industries in China's rugged interior to prepare for potential invasion by the United States or Soviet Union, Planning Commission Director
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After a wall is complete, it is sufficiently strong to immediately remove the formwork. This is necessary if a surface texture is to be applied, e.g., by
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observed in 1925 that rammed-earth structures endure indefinitely and can be constructed for less than two-thirds of the cost of standard frame houses.
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Detail of the surface of an eroded rammed-earth wall: apart from the patches of damage, the surface shows regular horizontal lines caused by the wooden
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because it eliminated (1) the gap between town and country, (2) the gap between workers and peasants, and (3) the gap between manual and mental labor.
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published the results of their research of rammed earth in a pamphlet titled "Rammed Earth Building Construction". In 1936, on a homestead near
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to a depth of 10 to 25 cm (4 to 10 in) and then compacted to approximately 50% of its original volume. The soil is compacted
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promoted the use of rammed earth construction as a low-cost method which was indigenous to China and required little technical skill.
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The French term "pisé de terre" or "terre pisé" was sometimes used in English for architectural uses, especially in the 19th century.
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Rammed earth works require at least one skilled person for quality control. All other workers can be unskilled or semi-skilled.
1484: 917: 593: 1432: 1400: 1364: 1305: 1227:"National Register Properties in South Carolina: Borough House Plantation, Sumter County (SC Hwy 261, vicinity of Stateburg)" 662: 1504: 1253:"National Register Properties in South Carolina: Church of the Holy Cross, Sumter County (SC Hwy 261, Stateburg vicinity)" 1479: 1489: 551: 308:
Adding cement to soil mixtures low in clay can also increase the load-bearing capacity of rammed-earth edifices. The
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Drawing on the Daqing experience, China encouraged rammed earth construction in the mid-1960s. Starting in 1964,
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complex contains the oldest and largest collection of 'high style' pise de terre (rammed earth) buildings in the
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Rammed earth construction was both practically and ideologically important during the rapid construction of the
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of rammed earth increases as it cures. Cement-stabilised rammed earth is cured for a minimum period of 28 days.
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Meyskens, Covell F. (2022). "China's Cold War Motor City". In Altehenger, Jennifer; Ho, Denise Y. (eds.).
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heating. Warmth requires almost 12 hours to be conducted through a wall 35 cm (14 in) thick.
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to improve the engineering of rammed-earth houses. It also financed the authorship of the
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In modern rammed earth buildings, the walls are constructed on top of conventional
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From the 1920s through the 1940s rammed-earth construction in the US was studied.
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Roskam, Cole (2022). "The Brick". In Altehenger, Jennifer; Ho, Denise Y. (eds.).
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Blemishes can be repaired using the soil mixture as a plaster and sanded smooth.
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Surface of a newly built rammed earth wall just after the removal of formwork
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foundations, floors, and walls using compacted natural raw materials such as
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A notable example of 21st-century use of rammed earth is the façade of the
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Traditional model of construction of a wall of rammed earth on a foundation
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Proceedings of the Institution of Civil Engineers - Construction Materials
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Building for Oil: Daqing and the Formation of the Chinese Socialist State
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Betts, Morris Cotgrave; Miller, Thomas Arrington Huntington (May 1937) .
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Betts, Morris Cotgrave; Miller, Thomas Arrington Huntington (May 1937) .
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advocated for a "mass design revolution movement". In the context of the
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Edifices formed of rammed earth are found on every continent except
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Xujie, Liu; et al. (2002). Steinhardt, Nancy Shatzman (ed.).
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Rammed-earth walls have the colour and texture of natural earth.
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and generate very little waste. The soils used are typically
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Rammed-earth walls form part of the entrance edifice of the
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by S. W. Johnson. The technique was used to construct the
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Evidence of ancient use of rammed earth has been found in
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Making rammed earth involves compacting a damp mixture of
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Rammed earth wall construction at Central Arizona College
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Wolfskill, Lyle A.; Dunlap, Wayne A.; Gallaway, Bob M.
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spirit of on-site construction using rammed earth. The
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house-building technique in the subtropical climate of
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and subtler horizontal strata from successive courses.
1280:"Bulletin No. 3: Rammed Earth Building Construction." 998:, Washington, DC, USA. An alternative version is at: 574:
An outstanding example of a rammed-earth edifice in
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One significant benefit of rammed earth is its high
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Old rammed-earth wall with deterioration, in France
530:In the 1800s, rammed earth was popularized in the 518:) were commonly used for walls and foundations in 502:, dating to the 9th–7th millennium BC, and of the 371:A wall surface with oxide colour for visual appeal 1175:A Dictionary of Ancient Near Eastern Architecture 141:regions. The availability of suitable soil and a 556: 149:are two factors that make its use favourable. 1106:Allinson, David; Hall, Matthew (2013-01-10). 383:of rammed-earth walls make them suitable for 8: 1399:monograph series. Cambridge, Massachusetts: 195:or animal blood were used to stabilize it. 498:archaeological sites such as those of the 1257:National Register Sites in South Carolina 1231:National Register Sites in South Carolina 851:, individual bricks of highly compressed 1006:. Denton, TX, USA: UNT Digital Library, 668:Interest in rammed earth declined after 399:Environmental effects and sustainability 1422: 1420: 1302:Texas Transportation Institute bulletin 1081:Ashland Community and Technical College 1075:Cassell, Robert O. (17 December 2001). 996:United States Department of Agriculture 889: 647:US Agency for International Development 639:United States Department of Agriculture 350:and prevents significant loss of heat. 310:United States Department of Agriculture 122:, in a range of environments including 1429:Material Contradictions in Mao's China 1361:Material Contradictions in Mao's China 1295:"Handbook For Building Homes of Earth" 1128:. Austin, TX, USA: Sustainable Sources 1386: 1384: 1354: 1352: 1350: 1348: 1346: 1149:"Rammed Earth – Pollution and Cement" 1070: 1068: 1066: 1064: 1062: 1043:. Victoria, Australia. Archived from 27:Construction material of damp subsoil 7: 487:Rammed-earth edifice on a farm in 25: 769:"PisĂ©" houses of rammed earth in 590:, erected between 1838 and 1841. 263:Contemporary slip formwork in use 172:that has suitable proportions of 107:. It has been especially used in 1177:, Routledge, London 1988, p. 165 1003:Rammed Earth Walls for Buildings 191:Historically, additives such as 704:and the related development of 620:, erected between 1850 and 1852 1433:University of Washington Press 1401:Harvard University Asia Center 1365:University of Washington Press 1306:Texas Transportation Institute 663:Texas Transportation Institute 1: 1500:Soil-based building materials 751:Nk'Mip Desert Cultural Centre 682:Nk'Mip Desert Cultural Centre 994:Originally published by the 198:Soil mix is poured into the 103:, usually small and made in 54:, at the eastern end of the 1331:www.architecturalrecord.com 1037:"Rammed Earth Construction" 777:; the technique is called " 761:, Canada, completed in 2006 614:Holy Cross Episcopal Church 552:National Historic Landmarks 387:. They are also inherently 38:(202 BCE – 220 CE) Chinese 1531: 1397:Harvard-Yenching Institute 862:Polymer soil stabilization 626:South Dakota State College 580:St. Thomas Anglican Church 115:, and sometimes in China. 99:it is also a material for 1008:University of North Texas 618:Stateburg, South Carolina 603:Stateburg, South Carolina 558:Constructed in 1821, the 548:Stateburg, South Carolina 95:Under its French name of 18:Taipa (Building Material) 1510:Sustainable technologies 867:Sustainable architecture 659:Texas A&M University 655:Handbook of Rammed Earth 599:Borough House Plantation 560:Borough House Plantation 544:Church of the Holy Cross 540:Borough House Plantation 526:United States and Canada 449:greenhouse gas emissions 42:made of rammed earth in 1153:Rammed Earth Consulting 943:Rammed Earth Consulting 872:Vernacular architecture 605:, erected in the 1820s. 395:damage, and non-toxic. 1485:Appropriate technology 1278:Howard, Glenn (1943). 849:Compressed earth block 802: 782: 762: 621: 606: 572: 491: 480: 455:and the production of 415: 372: 293: 285: 264: 234: 226: 165: 145:appropriate for local 59: 900:. Merriam-webster.com 788: 768: 749: 612: 596: 486: 471: 436:rather than "earth". 406: 370: 291: 279: 262: 232: 216: 163: 33: 1505:Sustainable building 1190:Chinese Architecture 984:on February 25, 2012 736:Third Front campaign 651:developing countries 379:. The thickness and 355:Moisture-impermeable 298:compressive strength 243:compressive strength 1480:American inventions 635:Gardendale, Alabama 478:Great Wall of China 434:quarried aggregates 427:which conserve the 254:reinforced concrete 147:climatic conditions 65:is a technique for 1490:Chinese inventions 1047:on 24 January 2018 898:"PisĂ© terminology" 803: 783: 763: 696:20th century China 622: 607: 570:, by S. W. Johnson 492: 481: 416: 413:Design Build Bluff 377:load-bearing walls 373: 357:finishes, such as 294: 286: 265: 235: 227: 166: 60: 1495:Natural materials 1442:978-0-295-75085-9 1410:978-0-674-26022-1 1374:978-0-295-75085-9 1204:978-0-300-09559-3 1173:Gwendolyn Leick: 1147:Keable, Rowland. 937:Keable, Rowland. 721:Sino-Soviet split 673:of the world. In 210:powered tampers. 48:Province of Gansu 16:(Redirected from 1522: 1515:Earth structures 1454:External sources 1447: 1446: 1424: 1415: 1414: 1391:Hou, Li (2021). 1388: 1379: 1378: 1356: 1341: 1340: 1338: 1337: 1323: 1317: 1316: 1314: 1312: 1299: 1290: 1284: 1283: 1275: 1269: 1268: 1266: 1264: 1249: 1243: 1242: 1240: 1238: 1223: 1217: 1216: 1184: 1178: 1171: 1165: 1164: 1162: 1160: 1144: 1138: 1137: 1135: 1133: 1122: 1116: 1115: 1103: 1097: 1096: 1094: 1092: 1087:on 22 March 2017 1083:. Archived from 1072: 1057: 1056: 1054: 1052: 1041:Earth Structures 1033: 1027: 1026: 1024: 1022: 993: 991: 989: 980:. 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Index

Taipa (Building Material)

Han dynasty
watchtower
Dunhuang
Province of Gansu
China
Silk Road
constructing
earth
chalk
lime
gravel
sustainable
building method
sculptures
molds
Central Asia
Tibetan art
Antarctica
temperate
semiarid
desert
montane
tropical
building design
climatic conditions

subsoil
sand

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