rrurnoouçno Capíiulo I OS SOLOS TROPICAIS NA ENGENHARIA qi 1. Comportamento hídrico e mecânico 15. Relação entre os valores de capacidade de suporte (CBR) e o grau de compactaçåo no segmento SCC/LR 1. 23 33 36 40 53 59 41 45 65 66 69 71 16. Variaçao da capacidade de suporte (CBR) e do grau de compactação ao longo do segmento SCC/LR 1, 17. Variaçâo do índice de vazios, índice de água e grau de compactação em diferentes pontos ao longo dos segmentos com base de cascalhocal e cascalho-cal-cimento. . Distribuiçäo do CaO e MgO ao longo do corte tranversal 1 -CCC 56. Análises químicas pontuais ao longo de corte tranversal sobre material "incolor" preenchendo cavidade -CCC, corte 2 (sítio 2) 57. Análises químicas pontuais ao longo de corte tranversal sobre a "matriz mista" (atravessa uma cavidade) -CCC, corte 3 58. Análises químicas pontuais do segmento com base cascalho cal (CC) 205 207 211 original tÌansformado é enriquecido em produtos cimentantes (resultantes da h¡dratação e das reaçöes pozolânicas), que isola volumes de material mais instável. tt¿ ABSTRACT The prime aim of this research is to contr¡bute for the understand¡ng of the processes and mechan¡smes brought about by the addit¡on of lime and poñland cement to ferral¡tic materials from an experimental road (PR-518) stah¡l¡zed w¡th aadd¡tion of l¡me + cement or lime only, have been analysed. PR-ílï,which connects Santa Mariana to Potto Quebra Canoa has been built by DER-PR (Departamento de Estradas de Rodagem do Paraná) in 1987, is 29,5km long, ß in Paraná North region €nd crosses areas where can be tound'Lafossolo Roxo", "Terra Roxa Estruturada" and "Latossolo Vermelho-escuro" -trop¡cal soils clayed texture.Of the 61 pañs that make up the road, five have been studied, which represent the k¡nds of applied mixture and techniques: part 4 (mixture of "Latossolo Roxo" + 4yo of calcit¡c l¡me + 5yo poñland cement -SCC/LR 1); part 10 ("Latossolo Roxo" + 4yo dolom¡tic lime + 596 po¡tland cement -SCC.LR 2); patt 55 ("Latossolo Vermelho-escuro" + 296 calc¡tic lime + 30Á poftland cement -SCC/LE); part I (gravel of weathered basalt + 4yo calcit¡ö l¡me + 5o/o portland cement -CCC); pañ 41 (gravel of weathered baseltThe research has been developed through morphological analysis (macro, meso and microscopic levels) complemented hy mineralogical analysis by x-ray and infrared, qualitative and quantitat¡ve chemical analysis on total sampling (tr¡acid attack) and by points (microprobes).At the same time it has been put into etrect based on the data supplied by DER-PR, the conclusion of phisical-hydr¡cs character¡sitics and mechanics of the parts soon afrer the bu¡lding; the follow-up structural behav¡our and su¡ face condit¡on of the road dur¡ng a period of t¡me.The resufts obtained show that, ¡n general, the bases depict Voblems related to a building stage:compactation grade variable at the lenght of the paÌt and the layer thikness; moisture content above or below of the optimum PROCTOR; defrcient homogen¡zat¡on of the mo¡sture and the mixtute of the mater¡als w¡th the additiv...