CEE Oct-Dec 2002

order to understand their needs. We could then ~elect a particular group to tco.,t the usefu lness and elTccti' cncss orthe law. This public dialogue and information collection 1<1sk will st>parate the important and the less-risky-to-deal with target groups from the less important and more-com pI ica ted- to-dea1-w i th groups. Another useful task would be to est~tblish unambiguous and rel<ttivel: easy-to-establish indicator<; on how to measure the impac t of the l:lw. The rise ur fall or the 13urcau nf Energy Efficiency (RE[) ''ill depend on this and how it markets itsci f and the Jm,. EVICTION ISSUE GETS THORNIER Prabllcii?J III f 'erma The extensive dri\ e of tfte Un ion Minist ry ofEnv ironrncnr and Forests (MoEF) to evict enc roachers from more than one m i llion hecta res of fo res t land across the country by September 30, 2002, is facing sti ff re.sistance in a number of states. The recent MoEF notification cou l d affect approximate ly 350 million people li ving in ar td around forests. The nuti fication issued by the MoEF put'> the onus of e.\ecuting the eviction orders on the state ( 'ourte.,:t· cnC'rgisc Vol 1. Issue 2. governments in accordance '' ith a .· l1ml- June 2002, PJII-1. . I llllartcr~l' 11pdate of' an Indo-German initiative tinre-bound action plan. 13ut doubts arc betng raised regarding sewral cl<Ht<;e'i in the notification. In ''hat seems tv ftc an arm-t\\ ist ing tactic. th~ tl(ll rli( at inn Ii 11ks till! pka for Ci l at ant.e of SC\ era I 'it:ill'tneo., spult<;Drl!d b;. the Union government to the progress sho\\ n by the states in eviction drive. l'he notifica ti on empowers forest offi cers to conduct summary tria l.:; on those v iolating the orders. ( 'o11/'IC'.\~\ · : Dott•n lo /:'art h. Sep 02. P 13 rc1x: 91 -11-n0858 -y {:'mail: cscr (i 'c.\ einclia.urg Jr'eh · 11'11'\1' cseindw.url!. SUSTAINABLE CONSTRUCTION EFFECT OF Sl!PERPLASTICIZF:R DOS.\GE 0~ PROPETIES OF rt \' \SH CO~CRETE Dr. D.\'. Siclh ll. Prof & Head, Dept. r~/ ( 'i1·i/ Eng.. Regional Engineering ( 'nflege. Jalandhar. !Jh11pesh Millo/, Dept. oj'Ci1·il Eng, Tlwpar !nsf. of' £ng . & Tech .. l'utwlu Superp lasticizers are incorporated in concrete mainly to modify its properties in the fresh swte, and more specifically to y ield hi gh v.orkability at low water/ cement ratios. These can be used to product! high-strength concrete '' ith norma l slump . Supcrplastic izers can reduce water content of the mix whi le maintaining a constant cement conten t and workability, thus producing h ig h-streng th and durable ~:o ncrete. The advent or '>llpcrpla~ tici?ers has radica ll y changed the earlier concepts and pt·ttcttces about concret e. P<lrticularly Ill respect or t ran sport ing, pl ac i ng and compact ion of concrete and achievi ng strength. In addition to th is, the use of supplementary cemen ting materials to replace cement has become essential for global sustainable de\'elopment. T he most ava i lable ce ment i ng materia l worl dwide is ny ash. a by– product o f thermal power stations . Fly ash is used in concre te for economy and t o improve the propert ies or conc rete used for ce rt ai n app li ca ti ons . It causes reduc ti on i n temperature rise in fr esh concrete, enhances wo r kabil ity, and contributes to durabi lity and strength in hardened concrete. llow·ever. the innuence of the supe rp lasticizer on the charac teristic s or hardeni ng and ha rdened concre te containing fl y ash is large!) unclear. A better understanding or these aspects is, therefore. essen ti al fo r analyzing the long-term propert ies ot- fly ash conc rete. The pr ese nt study investi gat ed the effec t or 67 supcrplasticizer dose on fly ash concrete. Concrete mix with design strength of 40 MPa was used with 0. 20 and 30% cement replaced by ny ash. The superplasticizcr close W<tS 'aricd ac; 0. 0.5. 1.0 and 1.5%. Sluntp tes t was ca r ried ou t to lllC~i ~lii'C \\Oikab ilit) or COnCrete. The compress i ve st reng th ksts were carried out at 7, 14,28 and 56 clays. Cour1e.1y. Ne1r• /Juilding Mataiols & Construction 1/'orld. Scp 02, P 16. Fax: 91-1/-6832-12-1 Email. nbmcH'ia'nda. \'Snl.ne/.111 ll'eb: \t'H'H' nhmc.:H'.C0/11 CO~CRETE ROADS IN Fl. ROPE European Reuczl' i\lixed Concrete Orguni::utiun (ERJIICOJ In 1\ us 11· i a. t hc ma i n W- E motorway \\i II be constructed as concrete road "hile the new N-S motorvvay will be built usi ng asphalt for cost comparison. In Belgium 28 local me·etings have been held on