A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Soilcrete blocks
This paper presents research conducted to determine the relationship between compaction pressure, cement content and cured compressive strength for soilcrete building blocks (soil-cement, cement stabilized or sandcrete). This relation is then used as the basis for a simple economic model to evaluate the economics of manual compaction to 2 and 10 MPa. Other authors have shown that higher compressive strengths result from increased compaction pressure. However, for a given compressive strength it is more usual to be interested in trading increased compaction pressure for reduced cement content so that maximum economy is achieved. This paper describes experimental work carried out to determine an empirical relation which uses compaction pressure and cement content to define cured strength. The relationship presented in this paper suggests that cured strength is more dependent on cement content than it is on compaction pressure for a well-cured block. The economic model suggests that low pressure manual compaction using increased quantities of cement is a more economic method of block production unless the cost of high pressure compaction machinery can be reduced. Cet expose presente les travaux de recherche conduits en vue de determiner la relation optimale entre pression de compactage, teneur en ciment et resistance a la compression a l'etat durci des parpaings de terre agglomerec (terre-ciment, ciment stabilise ou sable agglomere). Cette relation est ensuite utilisee sur la base d'un modele economique simple, afin d'evaluer l'aspect economique d'un compactage manuel a 2 et 10 MPa. D'autres auteurs ont montre que de plus hautes resistances a la compression s'obtenaient par augmentation de la pression de compactage. Cependant, pour une valeur donnee de resistance a la compression, il est plus courant, d'un point de vue commercial, de preconiser une pression de compactage accrue pour une teneur en ciment reduite. Cet expose decrit les travaux experimentaux effectues pour determiner une relation empirique faisant appel a la pression de compactage et a la teneu en ciment pour definir la resistance a l'etat durci. La relation presentee dans cet expose donne a penser que la resistance a l'etat durci depend davantage de la teneur en ciment que de la pression de compactage pour un parpaing bion durci. Le modele economique amene a conclure qu'un compactage manuel a faible pression associe a des teneurs accrues en ciment offre un procede de fabrication des parpaings plus economique qu'un compactage a haute pression associe a de faibles teneurs en ciment.
Soilcrete blocks
This paper presents research conducted to determine the relationship between compaction pressure, cement content and cured compressive strength for soilcrete building blocks (soil-cement, cement stabilized or sandcrete). This relation is then used as the basis for a simple economic model to evaluate the economics of manual compaction to 2 and 10 MPa. Other authors have shown that higher compressive strengths result from increased compaction pressure. However, for a given compressive strength it is more usual to be interested in trading increased compaction pressure for reduced cement content so that maximum economy is achieved. This paper describes experimental work carried out to determine an empirical relation which uses compaction pressure and cement content to define cured strength. The relationship presented in this paper suggests that cured strength is more dependent on cement content than it is on compaction pressure for a well-cured block. The economic model suggests that low pressure manual compaction using increased quantities of cement is a more economic method of block production unless the cost of high pressure compaction machinery can be reduced. Cet expose presente les travaux de recherche conduits en vue de determiner la relation optimale entre pression de compactage, teneur en ciment et resistance a la compression a l'etat durci des parpaings de terre agglomerec (terre-ciment, ciment stabilise ou sable agglomere). Cette relation est ensuite utilisee sur la base d'un modele economique simple, afin d'evaluer l'aspect economique d'un compactage manuel a 2 et 10 MPa. D'autres auteurs ont montre que de plus hautes resistances a la compression s'obtenaient par augmentation de la pression de compactage. Cependant, pour une valeur donnee de resistance a la compression, il est plus courant, d'un point de vue commercial, de preconiser une pression de compactage accrue pour une teneur en ciment reduite. Cet expose decrit les travaux experimentaux effectues pour determiner une relation empirique faisant appel a la pression de compactage et a la teneu en ciment pour definir la resistance a l'etat durci. La relation presentee dans cet expose donne a penser que la resistance a l'etat durci depend davantage de la teneur en ciment que de la pression de compactage pour un parpaing bion durci. Le modele economique amene a conclure qu'un compactage manuel a faible pression associe a des teneurs accrues en ciment offre un procede de fabrication des parpaings plus economique qu'un compactage a haute pression associe a de faibles teneurs en ciment.
Soilcrete blocks
Gooding, D. (author) / Thomas, T. (author)
Building Research & Information ; 25 ; 202-209
1997-07-01
8 pages
Article (Journal)
Electronic Resource
English
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