scholarly journals STUDY ON TEST METHODS OF WATER ABSORPTION AND DENSITY OF CRUSHED STONE FINES

2002 ◽  
Vol 67 (553) ◽  
pp. 1-6
Author(s):  
Masaharu OHASHI ◽  
Hiroshi TAMURA
Keyword(s):  
Water Absorption ◽  
Test Methods ◽  
Crushed Stone

scholarly journals Strength Development and Durability of Concrete Containing Recycled Roof Tile Aggregate

Recycling ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 29
Author(s):  
Alhagie Bakary Ceesay ◽  
Shingo Miyazawa
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Recycled Aggregate ◽  
Crushed Stone ◽  
Strength Development ◽  
Freezing And Thawing ◽  
Aggregate Concrete ◽  
Roof Tile ◽  
Concrete Production ◽  
Low Strength

The use of recycled aggregate in new concrete has often been limited due to concerns over their quality and structural performance. This research aims to investigate the physical properties of recycled roof tile aggregate and its suitability for concrete production. Physical properties of recycled roof tile aggregate are compared to normal crushed stone aggregate. Effects of recycled roof tile aggregates on strength and durability of recycled roof tile concrete was compared with normal aggregate concrete using mechanical properties and durability tests. The experimental results showed that high water absorption and low strength of aggregate have a great effect on the workability and strength of the concrete containing recycled roof tile aggregate. Aggregate density, water absorption, crushing value and abrasion value of the recycled roof tile aggregate were found to be lower than crushed stone aggregate and concrete containing recycled roof tile aggregate had low strength and slow strength development. Similar durability performance of recycled roof tile aggregate concrete and normal aggregate concrete was observed except when exposed to freezing and thawing.

Thickness Swelling and Water Absorption Character of Laminate Floor

2013 ◽  
Vol 750-752 ◽  
pp. 64-69
Author(s):  
Hai Xia Yu ◽  
Chong Rong Fang ◽  
Man Ping Xu ◽  
Rong Qiang Tang
Keyword(s):  
Moisture Content ◽  
Water Absorption ◽  
Test Specimen ◽  
Internal Bond ◽  
Middle Layer ◽  
Test Methods ◽  
Thickness Swelling ◽  
Floor Coverings

Laminate floor coverings, with fiberboard in the middle layer, are hygroscopic which caused potential dimension instability. The paper tested thickness swelling (TS) and water absorption (WA) of 10 commercial laminate floors (LF) according to G/T 18102-2007 (GB/T) and LY/T 1611-2011(LY/T) and analyzed correlation between them. The results show that TS obtained by the GB/T method differed significantly from LY/T methods at the initial 14 days. 7d-TS and 7d-WA values of test specimen measuring 50 by 50mm both correlated well with internal bond (IB). For both kinds of test methods, the moisture content almost reached saturation at 28 days.

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