A project of Volunteers in Asia

LaCeta Ram: Una Maquina para Producir Blmus Buecos de Suelo Ccmentq

by: Roberto E. Lou Ma

Published by: Centro de Experimentation en Tecnologia

Apropiada 15 Ave 14-61, Z-10 Guatemala

Paper copies are $2. Booklet in Spanish with an English summary.

Available from: Centro de Experimentation en Tecnologia

Apropiada 15 Ave 14-61, Z-10 Guatemala

Reproduced by permission of the Centro de lxperimentation en Tecnologia Apropiada.

Reproduction of this microfiche document in any form is subject to the same restrictions as those of the original document.

IHii CZTA-R&I: i &XlM11, lWR TROlXJCII1G XZLO;~ BLU.,UING BLOCKS OF SLILMC!&JjJ, (Abstract)

tiALdL, Oi4 iiti GENERAL UESIGJ OS TilE CINVA-RAM

21 new machine, based on the general design of the CINVA-RAM, has been developed by the author, for the Droduction of hol.low buil- ding blocks from a damp mix-i;ure of earth and a stabilizing addi- tive, generally cement.

Tile machine IXXJ been named CETA-RAM, honoring the Centro de Expe- rimentscidn en lecnologia Asroqiada (Guatemala), where it was develo?ed, and the Chilean engineer Rati Ran&z, creator of the gII;j&;m.

Ihe CJiA-RAX is composed of three nain assenolies:

1. Erame, with mold box and lid (Figure 3)

2. . ,old box bottom ylate (Figure 4)

3. Lever device (Figure Sj

The bottom nla tc has two tubular guides (B), that engage the two cilyndrical columns (A) bolted to the base of the frame. The lever device, similar in operation to that in the CINVA-RAM, activates the bottom plate to compress the damp soil-cement mixture inside the closed mold box to form the block, and also to eject the block from the mold after the lid is opened. The finisbsd block is then nand carried to a cool place and allowed to set h, -ure for a minimum of seven days.

Picures 3 to 14 are a ?hotograpilic sequence of the CETA-RAIS in operation.

irhen working with sandy soils, a pallet (Figure 5) is used to handle the freshly molded blocks without danger of disintegrating. Before filling tile box, the 7allet is droqoed on the bottom; after the formed block is ejected, it is carried civay on the nallet, nlacdd on the ground, and carefully turned on its side, thereby freeing the ?allet for inmediate reuse.

\ Tie blocks Traduce: by the SEIA-Rdt; have tile shanc and dimensions shown in Figure 2. ?he holes sin?lify the placement of reinforcing rods in aseismic wall construction. The length of three blocks joints , add exactly one meter. This sirn?lifics the planning and

yhs

excecution of low cost housing projects, as it allows a modular coordination on the basis of 50 or 100 centimeters.

It is the intc:ition of CXl!A to continue research with other versions of the ZuL&i-Xl, , to qroduce blocks of other sin:nes nnd dimensions, of soil-cement mixtures and other ?ossiblc mcterials.

,

Roberto E. Lou Ida

Guatemala, February 1977

D.; 1. y, 0 3. ;... :. 0 ., . ..b ._ : ,. ., .&-

. : b . . . .

DIAMJhmO DE ACL9Jt5RRoS 60

:.. c ., .

D .

0 _r T .b

. i.. ,? D b . . i b 0 > 0 ,

li ::3. i. * .-

. . Y * . . d . : P u *

3 0 0

3 ,., D

.I 0 :.;. _, _,_

0 . 0 d .. , .

. .. *.

__ :_. -*_ , (J . __, :.:: B ..-nd.

_.

i---- 7a ~ I { ~~ .-. -.-_

\a4

., _

I

x

. .

I2

2 --

- - .- _ -. ., ., , .- -