Patent
Additive agent for water-permeable concrete, water-permeable concrete, and spraying method
Reads0
Chats0
TLDR
In this paper, an additive agent for a water-permeable concrete which makes spraying on roads, slopes, etc., possible, has a good water permeability, realizes high strengths, and enables the working time for uniformly levelling a sprayed concrete surface to be secured, and to provide a waterpermeably concrete prepd. by using the same additive agent is presented.Abstract:
PROBLEM TO BE SOLVED: To provide an additive agent for a water-permeable concrete which makes spraying on roads, slopes, etc., possible, has a good water permeability, realizes high strengths, and enables the working time for uniformly levelling a sprayed concrete surface to be secured, and to provide a water-permeable concrete prepd. by using the same. SOLUTION: This additive agent, used for a water-permeable concrete contg. an aggregate having a sand percentage of 5-50%, contains an aluminum salt. Pref. the aluminum salt is aluminum sulfate. A carbonate may be incorporated into a water-permeable concrete prepd. by using this additive agent.read more
Citations
More filters
Patent
Quick-setting agent for cement, quick-setting cement concrete produced by using the agent, and method of producing the same
TL;DR: In this paper, the authors proposed a quick-setting agent for a part having voids such as cracks and a method of producing the quick-set cement concrete by using the quicksetting agent.
Patent
Quality confirmation method in shallow layer mixing improved ground
TL;DR: In this paper, the pull-out force of a bar-like member 20 buried in improved soil 10 in the shallow layer mixing improved ground is measured after the improved soil is solidified, and the strength of the improved ground 10 is estimated from the pullout force.