211.2-1998

Standard Practice for Selecting Proportions for Structural Lightweight Concrete

211.2-1998 发布历史

Discussion in this standard is limited to structural grade@ lightweight aggregates@ and structural lightweight-aggregate concrete. Structural lightweight-aggregate concrete is defined as concrete which: (a) is made with lightweight aggregates conforming to ASTM C 330@ (b) has a compressive strength in excess of 2500 psi (17.2 MPa) at 28 days of age when tested in accordance with methods stated in ASTM C 330@ and (c) has an equilibrium weight not exceeding 115 lb/ ft3 (1842 kg/m3) as determined by ASTM C 567. Concrete in which a portion of the lightweight aggregate is replaced by normalweight aggregate is within the scope of this standard. When normalweight fine aggregate is used@ it should conform to the requirements of ASTM C 33. The use of pozzolanic and chemical admixtures is not covered in this standard.PurposeThe purpose of this standard is to provide generally applicable methods for selecting and adjusting mixture proportions for structural lightweight concrete. These methods are also applicable to concrete containing a combination of lightweight and normalweight aggregate.

211.2-1998由ACI - American Concrete Institute 发布于 1998-01-01，并于 2005-07-28 实施。

211.2-1998的历代版本如下：

• 1991年01月01日 211.2-1991
• 1998年01月01日 211.2-1998

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标准号

211.2-1998

发布日期

1998年01月01日

实施日期

2005年07月28日

废止日期

无

中国标准分类号

/

国际标准分类号

/

发布单位

ACI - American Concrete Institute

引用标准

20

适用范围

Discussion in this standard is limited to structural grade@ lightweight aggregates@ and structural lightweight-aggregate concrete. Structural lightweight-aggregate concrete is defined as concrete which: (a) is made with lightweight aggregates conforming to ASTM C 330@ (b) has a compressive strength in excess of 2500 psi (17.2 MPa) at 28 days of age when tested in accordance with methods stated in ASTM C 330@ and (c) has an equilibrium weight not exceeding 115 lb/ ft3 (1842 kg/m3) as determined by ASTM C 567. Concrete in which a portion of the lightweight aggregate is replaced by normalweight aggregate is within the scope of this standard. When normalweight fine aggregate is used@ it should conform to the requirements of ASTM C 33. The use of pozzolanic and chemical admixtures is not covered in this standard.PurposeThe purpose of this standard is to provide generally applicable methods for selecting and adjusting mixture proportions for structural lightweight concrete. These methods are also applicable to concrete containing a combination of lightweight and normalweight aggregate.