Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data 001    332231 005    20190708041829.AM 008    190708s |||||||||b ||00||| 040 ## $aSTII-DOST 041 0# $aeng 090 ## $aFil(S) SD339 F76 27/1-2 2001 100 1# $aEusebio, Dwight A. 100 1# $aVillena, Edgardo M. 100 1# $aFuntanilla, Edgardo F. 245 00 $aUtilization of river red gum (Eucalyptus camaldulensis Dehnh.) for wood wool cement board$cby Dwight A. Eusebio, Edgardo M. Villena, Edgardo F. Funtanillaa 300 ## $a1-14$bgraphs, tables 504 ## $ainclude bibliographic reference 520 3# $a     Laboratory size (30 x 30 cm) wood wool cement boards (WWCB) at three density levels (0 .60, 0 .80 and 1.00 g/cm3) and thickness of 12 mm were produced using river red gum (Eucalyptus camaldulensis Dehnh.) wood as raw material. The effects of soaking the wood excelsior in water prior to mixing with cement, wood/cement ratio and accelerator on board properties were determined. The boards' modulus of rupture (MOR), modulus of elasticity (MOE) and nail-head-pull through (NHPT), as well as thickness swelling (TS) and water absorption (WA) after 24-hr water immersion, were likewise determined.      MOR, MOE and NHPT increased with increasing board density. The highest MOR and MOE were obtained from boards with the most cement, i.e., wood/cement ratio of 30/70 while the opposite was observed for NHPT. As expected, WA and TS decreased as cement content increased. Boards with unsoaked excelsior exhibited higher WA and TS properties, meaning poorer dimensional stability, than boards with soaked excelsior at 50/50 and 40/60 wood/cement ratios. (Authors' abstract)04$aEngi 650 ne ering04$aEuca 650 ly ptus camaldulensis Dehnh04$aBoar 650 d# density04$aWood 650 /c ement ratio04$aSoak 650 in g time04$aCeme 650 nt accelarators $wANAL 991 YT ICS           Physical Location           Digital Copy Not Available          Add to Book Cart  |   Download MARC