low-density concrete

low-density concrete

Concrete whose oven-dry unit weight of less than 50 pounds per cubic foot (800 kg/m3).
References in periodicals archive ?
In concrete structures, the use of low-density concrete is an effective way to minimize overall dead load and as a result obtain optimum cross-sectional dimensions of reinforced concrete elements [7].
However, the production of high-strength low-density concrete with grade up to 100 MPa has been investigated successfully [10].
Drying shrinkage for several types of low-density concrete using OPS with 28-day compressive strength in the range of 22-38 MPa was measured by Alengaram and Awam [25].
Nilsen and Aitcin [65] measured the drying shrinkage of low-density concrete made of expanded shale aggregate and reported a shrinkage value of 160 microstrain at about 4 months of age under 7-day moist curing.
This section was then completely backfilled with cuttable, low-density concrete. After the concrete was cured in Phase 1, the outby 21-ft-wide section was developed, bolted, meshed, and also completely backfilled.
Due to the fact that the floor elevation dipped from the tailgate to headgate side, bulkheads were built and the low-density concrete was pumped from the headgate to tailgate side through surface boreholes.
The successful cut-through of 3 Right recovery entry can be mainly attributed to the: (1) completely backfilled low-density concrete, and (2) pre-installed primary and supplemental bolts, along with a T3 roof channel, and steel and nonmetallic recovery meshes, fiberglass bolts in the inby pillar, steel rib bolts in the outby pillar, and angled roof/rib channel.
This section was then completely backfilled with cuttable, low-density concrete. After the concrete was cured in Phase 1, the outby 21-ft wide section was developed, bolted, meshed, and also completely backfilled.
The successful cut-through of 3 Right recovery entry can be mainly attributed to the: (1) completely backfilled low-density concrete, and (2) preinstalled primary and supplemental bolts, along with a T3 roof channel, and steel and nonmetallic recovery meshes, fiberglass bolts in the inby pillar, steel rib bolts in the outby pillar, and angled roof/rib channel.
Hoff, "Guide for the use of low-density concrete in civil works projects" Tech.
He discussed the corrosion protection properties of low-density concrete cellular grout for steel surfaces.
Effects of Expanded Perlite Aggregate and Mineral Admixtures on the Compressive Strength of Low-Density Concretes. Cem Con Res 2001; 31: 1627-1632.
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