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Harriette Purchas gravatar image
RedR TSS

Using earth mortar use for reconstruction in earthquake prone areas

Construction of housing: single storey stone buildings with earth mortar

For very poor families with almost no resources rebuilding their own houses what would be the most effective way to make reconstruction safer? Safety here is defined as minimising damage from small earthquakes and maximising escape time for inhabitants in large earthquakes.

Sub questions

  1. It has been suggested that a small percentage of cement mixed in with the earth mortar would achieve this, but other advice suggests cement is only effective in sand based earth mortar, and ineffective in clay based mortar:

(a) Is it true that cement is only effective in sand based earth mortar, and ineffective in clay based mortar?

(b) Would a small percentage of cement have the desired effect of increased safety?

2. It has been suggested that reinforcing the mortar with fibres (rope, hemp etc) would be effective to increase safety (without cement). Is there any evidence to support this?

Posted on behalf of contacts in Nepal.

Regards

Harriette (RedR Technical Coordinator)

click to hide/show revision 2
No.2 Revision

Using earth mortar use for reconstruction in earthquake prone areas

Construction of housing: single storey stone buildings with earth mortar

For very poor families with almost no resources rebuilding their own houses what would be the most effective way to make reconstruction safer? Safety here is defined as minimising damage from small earthquakes and maximising escape time for inhabitants in large earthquakes.

Sub questions

  1. It has been suggested that a small percentage of cement mixed in with the earth mortar would achieve this, but other advice suggests cement is only effective in sand based earth mortar, and ineffective in clay based mortar:

(a) Is it true that cement is only effective in sand based earth mortar, and ineffective in clay based mortar?

(b) Would a small percentage of cement have the desired effect of increased safety?

2. It has been suggested that reinforcing the mortar with fibres (rope, hemp etc) would be effective to increase safety (without cement). Is there any evidence to support this?

Posted on behalf of contacts in Nepal.

Regards

Harriette (RedR Technical Coordinator)

click to hide/show revision 3
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KnowledgePointAdmin gravatar image
RedR CCDRR

Using earth mortar for reconstruction in earthquake prone areas

Construction of housing: single storey stone buildings with earth mortar

For very poor families with almost no resources rebuilding their own houses what would be the most effective way to make reconstruction safer? Safety here is defined as minimising damage from small earthquakes and maximising escape time for inhabitants in large earthquakes.

Sub questions

  1. It has been suggested that a small percentage of cement mixed in with the earth mortar would achieve this, but other advice suggests cement is only effective in sand based earth mortar, and ineffective in clay based mortar:

(a) Is it true that cement is only effective in sand based earth mortar, and ineffective in clay based mortar?

(b) Would a small percentage of cement have the desired effect of increased safety?

2. It has been suggested that reinforcing the mortar with fibres (rope, hemp etc) would be effective to increase safety (without cement). Is there any evidence to support this?

Posted on behalf of contacts in Nepal.

Regards

Harriette (RedR Technical Coordinator)